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1

MAC-Kaust Project P1 CO2 Sequestration Modeling of CO2 sequestration including parameter  

E-Print Network [OSTI]

MAC-Kaust Project P1 ­ CO2 Sequestration Modeling of CO2 sequestration including parameter identification and numerical simulation M. Brokate, O. A. PykhteevHysteresis aspects of CO2 sequestration modeling K-H. Hoffmann, N. D. Botkin Objectives and methods of CO2 sequestration There is a popular belief

Turova, Varvara

2

numerical methodology to model and monitor co2 sequestration  

E-Print Network [OSTI]

CO2 sequestration is a means of mitigating the greenhouse effect [1]. Geologic sequestration involves injecting CO2 into a target geologic formation at depths ...

santos,,,

3

CO2 sequestration | EMSL  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

CO2 sequestration CO2 sequestration Leads No leads are available at this time. Low-Temperature Carbon Monoxide Oxidation Catalysed by Regenerable Atomically Dispersed Palladium on...

4

Modeling the Sequestration of CO2 in Deep Geological Formations  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

the Sequestration of CO the Sequestration of CO 2 in Deep Geological Formations K. Prasad Saripalli, B. Peter McGrail, and Mark D. White Pacific Northwest National Laboratory, Richland, Washington 99352 corresponding author Prasad Saripalli Senior Research Scientist Pacific Northwest National Laboratory 1313 Sigma V Complex (K6-81) Richland, WA 99352 ph: (509) 376-1667 fax: (509) 376-5368 prasad.saripalli@pnl.gov 2 Modeling the Sequestration of CO 2 in Deep Geological Formations K. Prasad Saripalli, B. Peter McGrail, and Mark D. White Pacific Northwest National Laboratory, Richland, Washington 99352 Modeling the injection of CO 2 and its sequestration will require simulations of a multi- well injection system in a large reservoir field. However, modeling at the injection well

5

Gravity monitoring of CO2 movement during sequestration: Model studies  

E-Print Network [OSTI]

CO 2 enhanced oil recovery (EOR) and sequestration in afor a coalbed methane formation. EOR/sequestration petroleumbut shallow compared to either EOR or brine formations. The

Gasperikova, E.

2008-01-01T23:59:59.000Z

6

EMSL - CO2 sequestration  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

co2-sequestration en Low-Temperature Carbon Monoxide Oxidation Catalysed by Regenerable Atomically Dispersed Palladium on Alumina. http:www.emsl.pnl.govemslwebpublications...

7

Geologic CO2 Sequestration  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Geologic CO2 Sequestration Geologic CO2 Sequestration Geologic reservoirs offer promising option for long- term storage of captured CO 2 Accumulations of gases (including CO 2 ) in geologic reservoirs, by natural processes or through enhanced oil recovery operations, demonstrate that gas can be stored for long periods of time and provide insights to the efficacy and impacts of geological gas storage. Los Alamos scientists in the Earth and Environmental Sciences (EES) Division have been involved in geologic CO 2 storage research for over a decade. Research Highlights * Led first-ever US field test on CO 2 sequestration in depleted oil reservoirs * Participant in two Regional Carbon Sequestration Partnerships (Southwest Regional and Big Sky) * Part of the National Risk Assessment Partnership (NRAP) for CO

8

A numerical procedure to model and monitor CO2 sequestration in ...  

E-Print Network [OSTI]

Sep 7, 2012 ... analyze storage integrity, providing early warning should any leakage occurs. A numerical procedure to model and monitor CO2 sequestration ...

santos

9

CO2 Mineral Sequestration Studies  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Sequestration Studies Sequestration Studies Introduction, Issues and Plans Philip Goldberg National Energy Technology Laboratory Workshop on CO 2 Sequestration with Minerals August 8, 2001 Mineral Sequestration Program Research effort seeks to refine and validate a promising CO 2 sequestration technology option, mineral sequestration also known as mineral carbonation Goals: * Understand the fundamental mechanisms involved in mineral carbonation * Generate data to support process development * Operate continuous, integrated small-scale process unit to support design Current Partnerships In order to effectively develop Mineral Sequestration, a multi-laboratory Working Group was formed in the Summer of 1998, participants include: * Albany Research Center * Arizona State University * Los Alamos National Laboratory

10

Gravity monitoring of CO2 movement during sequestration: Model studies  

SciTech Connect (OSTI)

We examine the relative merits of gravity measurements as a monitoring tool for geological CO{sub 2} sequestration in three different modeling scenarios. The first is a combined CO{sub 2} enhanced oil recovery (EOR) and sequestration in a producing oil field, the second is sequestration in a brine formation, and the third is for a coalbed methane formation. EOR/sequestration petroleum reservoirs have relatively thin injection intervals with multiple fluid components (oil, hydrocarbon gas, brine, and CO{sub 2}), whereas brine formations usually have much thicker injection intervals and only two components (brine and CO{sub 2}). Coal formations undergoing methane extraction tend to be thin (3-10 m), but shallow compared to either EOR or brine formations. The injection of CO{sub 2} into the oil reservoir produced a bulk density decrease in the reservoir. The spatial pattern of the change in the vertical component of gravity (G{sub z}) is directly correlated with the net change in reservoir density. Furthermore, time-lapse changes in the borehole G{sub z} clearly identified the vertical section of the reservoir where fluid saturations are changing. The CO{sub 2}-brine front, on the order of 1 km within a 20 m thick brine formation at 1900 m depth, with 30% CO{sub 2} and 70% brine saturations, respectively, produced a -10 Gal surface gravity anomaly. Such anomaly would be detectable in the field. The amount of CO{sub 2} in a coalbed methane test scenario did not produce a large enough surface gravity response; however, we would expect that for an industrial size injection, the surface gravity response would be measurable. Gravity inversions in all three scenarios illustrated that the general position of density changes caused by CO{sub 2} can be recovered, but not the absolute value of the change. Analysis of the spatial resolution and detectability limits shows that gravity measurements could, under certain circumstances, be used as a lower-cost alternative to seismic measurements.

Gasperikova, E.; Hoversten, G.M.

2008-07-15T23:59:59.000Z

11

Gravity monitoring of CO2 movement during sequestration: Model studies  

E-Print Network [OSTI]

2 Sequestration in Coalbed Methane Reservoirs of the Black2006 International Coalbed Methane Symposium Proceedings,and the third is for a coalbed methane formation. EOR/

Gasperikova, E.

2008-01-01T23:59:59.000Z

12

Modeling of coal bed methane (CBM) production and CO2 sequestration in coal seams  

Science Journals Connector (OSTI)

A mathematical model was developed to predict the coal bed methane (CBM) production and carbon dioxide (CO2) sequestration in a coal seam accounting for the coal seam properties. The model predictions showed that, for a CBM production and dewatering process, the pressure could be reduced from 15.17 MPa to 1.56 MPa and the gas saturation increased up to 50% in 30 years for a 5.4 × 105 m2 of coal formation. For the CO2 sequestration process, the model prediction showed that the CO2 injection rate was first reduced and then slightly recovered over 3 to 13 years of injection, which was also evidenced by the actual in seam data. The model predictions indicated that the sweeping of the water in front of the CO2 flood in the cleat porosity could be important on the loss of injectivity. Further model predictions suggested that the injection rate of CO2 could be about 11 × 103 m3 per day; the injected CO2 would reach the production well, which was separated from the injection well by 826 m, in about 30 years. During this period, about 160 × 106 m3 of CO2 could be stored within a 21.4 × 105 m2 of coal seam with a thickness of 3 m.

Ekrem Ozdemir

2009-01-01T23:59:59.000Z

13

CO2 Sequestration short course  

SciTech Connect (OSTI)

Given the public’s interest and concern over the impact of atmospheric greenhouse gases (GHGs) on global warming and related climate change patterns, the course is a timely discussion of the underlying geochemical and mineralogical processes associated with gas-water-mineral-interactions encountered during geological sequestration of CO2. The geochemical and mineralogical processes encountered in the subsurface during storage of CO2 will play an important role in facilitating the isolation of anthropogenic CO2 in the subsurface for thousands of years, thus moderating rapid increases in concentrations of atmospheric CO2 and mitigating global warming. Successful implementation of a variety of geological sequestration scenarios will be dependent on our ability to accurately predict, monitor and verify the behavior of CO2 in the subsurface. The course was proposed to and accepted by the Mineralogical Society of America (MSA) and The Geochemical Society (GS).

DePaolo, Donald J. [Lawrence Berkeley National Laboratory; Cole, David R [The Ohio State University; Navrotsky, Alexandra [University of California-Davis; Bourg, Ian C [Lawrence Berkeley National Laboratory

2014-12-08T23:59:59.000Z

14

B.2 Subproject Brokate Simulating CO2 Sequestration  

E-Print Network [OSTI]

79 B.2 Subproject Brokate Simulating CO2 Sequestration Hysteretic Aspects of CO2 Sequestration and implement models describing the hysteresis in the context of the CO2 sequestration process. The hysteresis's law but in contrast to most Darcy's law based models it assumes the phases to be weakly compressible

Turova, Varvara

15

An Intercomparison Study of Simulation Models for Geologic Sequestration of CO2  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Intercomparison Study of Simulation Models Intercomparison Study of Simulation Models for Geologic Sequestration of CO2 Karsten Pruess (K_Pruess@lbl.gov; 510/486-6732) Chin-Fu Tsang (CFTsang@lbl.gov; 510/486-5782) Earth Sciences Division, E.O. Lawrence Berkeley National Laboratory One Cyclotron Rd., MS 90-1116, Berkeley, CA 94720, U.S.A. David H.-S. Law (Law@arc.ab.ca; 780/450-5034) Alberta Research Council 250 Karl Clark Rd., Edmonton, Alberta T6N 1E4, Canada Curtis M. Oldenburg (CMOldenburg@lbl.gov; 510/486-7419) Earth Sciences Division, E.O. Lawrence Berkeley National Laboratory One Cyclotron Rd., MS 90-1116, Berkeley, CA 94720, U.S.A. ABSTRACT Mathematical models and numerical simulation tools will play an important role in evaluating the feasibility of CO2 storage in subsurface reservoirs, such as brine aquifers,

16

ECONOMIC MODELING OF CO2 CAPTURE AND SEQUESTRATION Sean Biggs, Howard Herzog, John Reilly, Henry Jacoby  

E-Print Network [OSTI]

of carbon capture and sequestration technologies using the MIT Emissions Prediction and Policy Analysis (EPPA) model. We model two of the most promising carbon capture and sequestration technologies, one, technological, and social issues of carbon capture and sequestration technologies. In 1997, the President

17

Geologic CO2 sequestration inhibits microbial growth | EMSL  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

community and could improve overall efficiency of CO2 sequestration. The Science Carbon dioxide (CO2) sequestration in deep subsurface environments has received...

18

Exsolution Enhanced Oil Recovery with Concurrent CO2 Sequestration...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Exsolution Enhanced Oil Recovery with Concurrent CO2 Sequestration. Exsolution Enhanced Oil Recovery with Concurrent CO2 Sequestration. Abstract: A novel EOR method using...

19

Sequestration of CO2 by Concrete Carbonation  

Science Journals Connector (OSTI)

Sequestration of CO2 by Concrete Carbonation ... Carbonation of reinforced concrete is one of the causes of corrosion, but it is also a way to sequester CO2. ... This work attempts to advance the knowledge of the carbon footprint of cement. ...

Isabel Galan; Carmen Andrade; Pedro Mora; Miguel A. Sanjuan

2010-03-12T23:59:59.000Z

20

CO2 Sequestration in Basalt Formations  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

CO CO 2 SequeStratiOn in BaSalt FOrmatiOnS Background There is growing concern that buildup of greenhouse gases, especially carbon dioxide (CO 2 ), in the atmosphere is contributing to global climate change. One option for mitigating this effect is to sequester CO 2 in geologic formations. Numerous site assessments for geologic sequestration of CO 2 have been conducted in virtually every region of the United States. For the most part, these studies have involved storing CO 2 in saline formation, deep coal seams, and depleted oil and gas reservoirs. Another option, however, is basalt formations. Basalt is a dark-colored, silica-rich, volcanic rock that contains cations-such as calcium, magnesium, and iron-that can combine with CO 2 to form carbonate minerals. Basalt formations have not received much

Note: This page contains sample records for the topic "modeling co2 sequestration" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

TOUGH+CO2: A multiphase fluid-flow simulator for CO2 geologic sequestration in saline aquifers  

Science Journals Connector (OSTI)

TOUGH+CO"2 is a new simulator for modeling of CO"2 geologic sequestration in saline aquifers. It is a member of TOUGH+, the successor to the TOUGH2 family of codes for multicomponent, multiphase fluid and heat flow simulation. The code accounts for heat ... Keywords: CO2 geologic sequestration, Modeling, Multiphase flow, Parallel computing, Saline aquifer, TOUGH+, TOUGH2

Keni Zhang; George Moridis; Karsten Pruess

2011-06-01T23:59:59.000Z

22

Numerical Simulation of CO2 Sequestration in Natural CO2 Reservoirs on the Colorado Plateau  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Simulation of CO Simulation of CO 2 Sequestration in Natural CO 2 Reservoirs on the Colorado Plateau Stephen P. White (S.White@irl.cri.nz, (64) 4 5690000) Graham J. Weir (G.Weir@irl.cri.nz, (64) 4 5690000) Warwick M. Kissling (W.Kissling@irl.cri.nz, (64) 4 5690000) Industrial Research Ltd. P.O. Box 31310 Lower Hutt, New Zealand Abstract This paper outlines the proposed research and summarizes pre-project work that forms a basis for a new research program on CO 2 sequestration in saline aquifers. The pre-project work considers storage and disposal of CO 2 several kilometers beneath the surface in generic aquifers and demonstrates the use of reactive chemical transport modeling to simulate mineral sequestration of CO 2. The current research project applies these techniques to particular saline

23

Formation Damage due to CO2 Sequestration in Saline Aquifers  

E-Print Network [OSTI]

Carbon dioxide (CO2) sequestration is defined as the removal of gas that would be emitted into the atmosphere and its subsequent storage in a safe, sound place. CO2 sequestration in underground formations is currently being considered to reduce...

Mohamed, Ibrahim Mohamed 1984-

2012-10-25T23:59:59.000Z

24

Modeling CO2 Sequestration in a Saline Reservoir and Depleted Oil Reservoir to Evaluate The Regional CO2 Sequestration Potential of The Ozark Plateau Aquifer System, South-Central Kansas  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

CO CO 2 Sequestration in a Saline Reservoir and Depleted Oil Reservoir to Evaluate The Regional CO 2 Sequestration Potential of The Ozark Plateau Aquifer System, South-Central Kansas Background Carbon capture, utilization and storage (CCUS) technologies offer the potential for reducing CO 2 emissions without adversely influencing energy use or hindering economic growth. Deploying these technologies in commercial-scale applications requires adequate geologic formations capable of (1) storing large volumes of CO 2 , (2) receiving injected CO 2 at efficient and economic rates, and (3) retaining CO 2 safely over extended periods. Research efforts are currently focused on conventional and unconventional storage formations within depositional environments such as: deltaic, fluvial, alluvial,

25

CO2 Hydrate Composite for Ocean Carbon Sequestration  

Science Journals Connector (OSTI)

CO2 Hydrate Composite for Ocean Carbon Sequestration ... Further studies are needed to address hydrate conversion efficiency, scale-up criteria, sequestration longevity, and impact on the ocean biota before in-situ production of sinking CO2 hydrate composite can be applied to oceanic CO2 storage and sequestration. ...

Sangyong Lee; Liyuan Liang; David Riestenberg; Olivia R. West; Costas Tsouris; Eric Adams

2003-07-18T23:59:59.000Z

26

CO2 Mineral Sequestration Studies in US  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Mineral Sequestration Studies in US Mineral Sequestration Studies in US Philip Goldberg 1 , Zhong-Ying Chen 2 , William O'Connor 3 , Richard Walters 3 , and Hans Ziock 4 1 National Energy Technology Laboratory, P.O. Box 10940, Pittsburgh, PA 15236, goldberg@netl.doe.gov, (412)386-5806 2 Science Applications International Corporation, 1710 Goodridge Dr. McLean, VA, zhong- ying.chen@saic.com, (703)676-7328 3 Albany Research Center, Albany, OR oconner@arc.doe.gov, walters@alrc.doe, (541)967-5834 4 Los Alamos National Laboratory, Los Alamos, NM, ksl@lanl.gov, ziock@lanl.gov, (505)667- 7265 Abstract Carbon sequestration by reacting naturally occurring Mg and Ca containing minerals with CO 2 to form carbonates has many unique advantages. Most notably is the fact that carbonates have a lower energy state than CO

27

Cost Assessment of CO2 Sequestration by Mineral Carbonation  

E-Print Network [OSTI]

Cost Assessment of CO2 Sequestration by Mineral Carbonation Frank E. Yeboah Tuncel M. Yegulalp Harmohindar Singh Research Associate Professor Professor Center for Energy Research... them carbon dioxide (CO 2 ). This paper assesses the cost of sequestering CO 2 produced by a ZEC power plant using solid sequestration process. INTRODUCTION CO 2 is produced when electrical energy is generated using conventional fossil...

Yeboah, F. E.; Yegulalp, T. M.; Singh, H.

2006-01-01T23:59:59.000Z

28

Integrated Reflection Seismic Monitoring and Reservoir Modeling for Geologic CO2 Sequestration  

SciTech Connect (OSTI)

The US DOE/NETL CCS MVA program funded a project with Fusion Petroleum Technologies Inc. (now SIGMA) to model the proof of concept of using sparse seismic data in the monitoring of CO{sub 2} injected into saline aquifers. The goal of the project was to develop and demonstrate an active source reflection seismic imaging strategy based on deployment of spatially sparse surface seismic arrays. The primary objective was to test the feasibility of sparse seismic array systems to monitor the CO{sub 2} plume migration injected into deep saline aquifers. The USDOE/RMOTC Teapot Dome (Wyoming) 3D seismic and reservoir data targeting the Crow Mountain formation was used as a realistic proxy to evaluate the feasibility of the proposed methodology. Though the RMOTC field has been well studied, the Crow Mountain as a saline aquifer has not been studied previously as a CO{sub 2} sequestration (storage) candidate reservoir. A full reprocessing of the seismic data from field tapes that included prestack time migration (PSTM) followed by prestack depth migration (PSDM) was performed. A baseline reservoir model was generated from the new imaging results that characterized the faults and horizon surfaces of the Crow Mountain reservoir. The 3D interpretation was integrated with the petrophysical data from available wells and incorporated into a geocellular model. The reservoir structure used in the geocellular model was developed using advanced inversion technologies including Fusion's ThinMAN{trademark} broadband spectral inversion. Seal failure risk was assessed using Fusion's proprietary GEOPRESS{trademark} pore pressure and fracture pressure prediction technology. CO{sub 2} injection was simulated into the Crow Mountain with a commercial reservoir simulator. Approximately 1.2MM tons of CO{sub 2} was simulated to be injected into the Crow Mountain reservoir over 30 years and subsequently let 'soak' in the reservoir for 970 years. The relatively small plume developed from this injection was observed migrating due to gravity to the apexes of the double anticline in the Crow Mountain reservoir of the Teapot dome. Four models were generated from the reservoir simulation task of the project which included three saturation models representing snapshots at different times during and after simulated CO{sub 2} injection and a fully saturated CO{sub 2} fluid substitution model. The saturation models were used along with a Gassmann fluid substitution model for CO{sub 2} to perform fluid volumetric substitution in the Crow Mountain formation. The fluid substitution resulted in a velocity and density model for the 3D volume at each saturation condition that was used to generate a synthetic seismic survey. FPTI's (Fusion Petroleum Technologies Inc.) proprietary SeisModelPRO{trademark} full acoustic wave equation software was used to simulate acquisition of a 3D seismic survey on the four models over a subset of the field area. The simulated acquisition area included the injection wells and the majority of the simulated plume area.

John Rogers

2011-12-31T23:59:59.000Z

29

INTERNATIONAL COLLABORATION ON CO2 SEQUESTRATION  

SciTech Connect (OSTI)

The primary focus of this reporting period was to prepare for conducting the ocean carbon sequestration field experiment during the summer of 2002. We discuss four key aspects of this preparation: (1) Design criteria for a CO{sub 2} flow system mounted on a ship; (2) Inter-model comparison of plume models; (3) Application of a double plume model to compute near field mixing; and (4) Evaluation of tracers.

Howard J. Herzog; E. Eric Adams

2002-09-01T23:59:59.000Z

30

International Collaboration on CO2 Sequestration  

SciTech Connect (OSTI)

On December 4, 1997, the US Department of Energy (USDOE), the New Energy and Industrial Technology Development Organization of Japan (NEDO), and the Norwegian Research Council (NRC) entered into a Project Agreement for International Collaboration on CO{sub 2} Ocean Sequestration. Government organizations from Japan, Canada, and Australia, and a Swiss/Swedish engineering firm later joined the agreement, which outlined a research strategy for ocean carbon sequestration via direct injection. The members agreed to an initial field experiment, with the hope that if the initial experiment was successful, there would be subsequent field evaluations of increasingly larger scale to evaluate environmental impacts of sequestration and the potential for commercialization. The evolution of the collaborative effort, the supporting research, and results for the International Collaboration on CO{sub 2} Ocean Sequestration were documented in almost 100 papers and reports, including 18 peer-reviewed journal articles, 46 papers, 28 reports, and 4 graduate theses. These efforts were summarized in our project report issued January 2005 and covering the period August 23, 1998-October 23, 2004. An accompanying CD contained electronic copies of all the papers and reports. This report focuses on results of a two-year sub-task to update an environmental assessment of acute marine impacts resulting from direct ocean sequestration. The approach is based on the work of Auerbach et al. [6] and Caulfield et al. [20] to assess mortality to zooplankton, but uses updated information concerning bioassays, an updated modeling approach and three modified injection scenarios: a point release of negatively buoyant solid CO{sub 2} hydrate particles from a moving ship; a long, bottom-mounted diffuser discharging buoyant liquid CO{sub 2} droplets; and a stationary point release of hydrate particles forming a sinking plume. Results suggest that in particular the first two discharge modes could be successfully designed to largely avoid zooplankton mortality. Sub-lethal and ecosystem effects are discussed qualitatively, but not analyzed quantitatively.

Peter H. Israelsson; E. Eric Adams

2007-06-30T23:59:59.000Z

31

Carbonation: An Efficient and Economical Process for CO2 Sequestration  

E-Print Network [OSTI]

Carbonation: An Efficient and Economical Process for CO2 Sequestration Tarun R Naik1 and Rakesh sequestration. Most of the studies related to the carbonation are limited to its effects on corrosion. The possibility of using carbonation process as a direct means for carbon dioxide sequestration is yet

Wisconsin-Milwaukee, University of

32

West Pearl Queen CO2 sequestration pilot test and modeling project 2006-2008.  

SciTech Connect (OSTI)

The West Pearl Queen is a depleted oil reservoir that has produced approximately 250,000 bbl of oil since 1984. Production had slowed prior to CO{sub 2} injection, but no previous secondary or tertiary recovery methods had been applied. The initial project involved reservoir characterization and field response to injection of CO{sub 2}; the field experiment consisted of injection, soak, and venting. For fifty days (December 20, 2002, to February 11, 2003) 2090 tons of CO{sub 2} were injected into the Shattuck Sandstone Member of the Queen Formation at the West Pearl Queen site. This technical report highlights the test results of the numerous research participants and technical areas from 2006-2008. This work included determination of lateral extents of the permeability units using outcrop observations, core results, and well logs. Pre- and post-injection 3D seismic data were acquired. To aid in interpreting seismic data, we performed numerical simulations of the effects of CO{sub 2} replacement of brine where the reservoir model was based upon correlation lengths established by the permeability studies. These numerical simulations are not intended to replicate field data, but to provide insight of the effects of CO{sub 2}.

Engler, Bruce Phillip; Cooper, Scott Patrick; Symons, Neill Phillip; Bartel, Lewis Clark; Byrer, Charles (National Energy Laboratory, Morgantown, WV); Elbring, Gregory Jay; McNemar, Andrea (National Energy Laboratory, Morgantown, WV); Aldridge, David Franklin; Lorenz, John Clay

2008-08-01T23:59:59.000Z

33

CO2 Sequestration Potential of Texas Low-Rank Coals  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Co Co 2 SequeStration Potential of texaS low-rank CoalS Background Fossil fuel combustion is the primary source of emissions of carbon dioxide (CO 2 ), a major greenhouse gas. Sequestration of CO 2 by injecting it into geologic formations, such as coal seams, may offer a viable method for reducing atmospheric CO 2 emissions. Injection into coal seams has the potential added benefit of enhanced coalbed methane recovery. The potential for CO 2 sequestration in low-rank coals, while as yet undetermined, is believed to differ significantly from that for bituminous coals. To evaluate the feasibility and the environmental, technical, and economic impacts of CO 2 sequestration in Texas low-rank coal beds, the Texas Engineering Experimental Station is conducting a four-year study

34

Aqueous Carbonation of Natural Brucite: Relevance to CO2 Sequestration  

Science Journals Connector (OSTI)

Aqueous Carbonation of Natural Brucite: Relevance to CO2 Sequestration ... Products and reaction kinetics of natural brucite carbonation are studied at room temperature and moderate pCO2. ... Carbonation of natural brucite in H2O and diluted HCl is investigated at room temperature and moderate pCO2 to explore the products’ mineralogy and reaction kinetics. ...

Liang Zhao; Liqin Sang; Jun Chen; Junfeng Ji; H. Henry Teng

2009-11-30T23:59:59.000Z

35

Geological Sequestration of CO2: The GEO-SEQ Project  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

GeoloGical SequeStration of co GeoloGical SequeStration of co 2 : the Geo-Seq Project Background Growing concern over the potential adverse effects of carbon dioxide (CO 2 ) buildup in the atmosphere leading to global climate change may require reductions in carbon emissions from industrial, transportation, and other sources. One promising option is the capture of CO 2 from large point sources and subsequent sequestration in geologic formations. For this approach to achieve wide acceptance, t assurances that safe, permanent, and verifiable CO 2 geologic storage is attained during sequestration operations must be made. Project results are made available to potential CO 2 storage operators and other interested stakeholders. The primary performing organizations of the GEO-SEQ project team are Lawrence

36

A Feasibility Study of Non-Seismic Geophysical Methods for Monitoring Geologic CO2 Sequestration  

E-Print Network [OSTI]

CO 2 enhanced oil recovery (EOR) and sequestration in athe measurement configuration. EOR/sequestration projects inshow that a CO 2 –based EOR could increase oil recovery by

Gasperikova, Erika; Hoversten, G. Michael

2006-01-01T23:59:59.000Z

37

Sustainable Carbon Sequestration: Increasing CO2-Storage Efficiency through a CO2-Brine Displacement Approach  

E-Print Network [OSTI]

CO2 sequestration is one of the proposed methods for reducing anthropogenic CO2 emissions to the atmosphere and therefore mitigating global climate change. Few studies on storing CO2 in an aquifer have been conducted on a regional scale. This study...

Akinnikawe, Oyewande

2012-10-19T23:59:59.000Z

38

Advanced Research Power Program--CO2 Mineral Sequestration  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Sequestration Sequestration Robert Romanosky National Energy Technology Laboratory Mineral Carbonation Workshop August 8, 2001 Advanced Research Power Program Descriptor - include initials, /org#/date Mineral Sequestration Research Research effort seeks to refine and validate a promising CO 2 sequestration technology option, mineral sequestration also known as mineral carbonation Descriptor - include initials, /org#/date What is Mineral Carbonation * Reaction of CO 2 with Mg or Ca containing minerals to form carbonates * Lowest energy state of carbon is a carbonate and not CO 2 * Occurs naturally in nature as weathering of rock * Already proven on large scale - Carbonate formation linked to formation of the early atmosphere Descriptor - include initials, /org#/date Advantages of Mineral Carbonation

39

Methods for Integrated Leak Detection Inference at CO2 Sequestration Sites  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Methods for Integrated Leak Detection Inference at CO2 Sequestration Sites Methods for Integrated Leak Detection Inference at CO2 Sequestration Sites Speaker(s): Mitchell Small Date: March 23, 2010 - 12:00pm Location: 90-3122 This seminar will explain a methodology for combining site characterization and soil CO2 monitoring for detecting leaks at geologic CO2 sequestration sites. Near surface CO2 fluxes resulting from a leak are simulated using the TOUGH2 model for different values of soil permeability, leakage rate and vadose zone thickness. Natural background soil CO2 flux rates are characterized by a Bayesian hierarchical model that predicts the background flux as a function of soil temperature. A presumptive leak is assumed if the monitored flux rate exceeds a critical value corresponding to a very high (e.g., 99%) prediction interval for the natural flux conditioned on

40

Efficiency of Sequestrating CO2 in the Ocean  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Efficiency of Sequestrating CO Efficiency of Sequestrating CO 2 in the Ocean Richard Dewey (RDewey@uvic.ca ; 250-472-4009) University of Victoria, P.O. Box 3055, Victoria BC Canada V8N 3P6 Gilbert Stegen (Dr_Stegen@hotmail.com ; 425-869-7236) SAIC and GRS Associates 17257 NE 116 th St., Redmond WA USA 98052 Abstract Ocean disposal of CO 2 continues to be of great interest as a possible mitigation strategy for reducing atmospheric emissions of anthropogenic CO 2 . The ocean, and ultimately ocean sediments, naturally represents the single largest sink of CO 2 , and annually sequesters several gigatons of carbon from the atmosphere. The injection of additional CO 2 to artificially accelerate the use of the ocean as a sink for atmospheric CO 2 and avoid a short-term build-up of greenhouse gases has been investigated for

Note: This page contains sample records for the topic "modeling co2 sequestration" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

ECONOMIC EVALUATION OF CO2 SEQUESTRATION TECHNOLOGIES  

SciTech Connect (OSTI)

In order to plan for potential CO{sub 2} mitigation mandates, utilities need better information on CO{sub 2} mitigation options, especially carbon sequestration options that involve non-utility operations. One of the major difficulties in evaluating CO{sub 2} sequestration technologies and practices, both geologic storage of captured CO{sub 2} and storage in biological sinks, is obtaining consistent, transparent, accurate, and comparable economics. This project is comparing the economics of major technologies and practices under development for CO{sub 2} sequestration, including captured CO{sub 2} storage options such as active oil reservoirs, depleted oil and gas reservoirs, deep aquifers, coal beds, and oceans, as well as the enhancement of biological sinks such as forests and croplands. An international group of experts has been assembled to compare on a consistent basis the economics of this diverse array of CO{sub 2} sequestration options. Designs and data collection are nearly complete for each of the CO{sub 2} sequestration options being compared. Initial spreadsheet development has begun on concepts involving storage of captured CO{sub 2}. No significant problems have been encountered, but some additional outside expertise will be accessed to supplement the team's expertise in the areas of life cycle analysis, oil and gas exploration and production, and comparing CO{sub 2} sequestration options that differ in timing and permanence of CO{sub 2} sequestration. Plans for the next reporting period are to complete data collection and a first approximation of the spreadsheet. We expect to complete this project on time and on budget.

Bert R. Bock; Richard G. Rhudy; David E. Nichols

2001-07-01T23:59:59.000Z

42

Modeling Density Effects in CO2 Injection in Oil Reservoirs and A Case Study of CO2 Sequestration in a Qatari Saline Aquifer  

E-Print Network [OSTI]

(and density) of a reference component (usually methane) and other factors that are independent of mixture density. Therefore, modifying the shift parameter of CO2 does not affect the viscosity of the mixture. Table 2.1 – Fluid composition...

Ahmed, Tausif

2012-10-19T23:59:59.000Z

43

INTERNATIONAL COLLABORATION ON CO2 SEQUESTRATION  

SciTech Connect (OSTI)

On December 4, 1997, the US Department of Energy (DOE), the New Energy and Industrial Technology Development Organization of Japan (NEDO), and the Norwegian Research Council (NRC) entered into a ''Project Agreement for International Collaboration on CO{sub 2} Ocean Sequestration''. Government organizations from Japan, Canada, and Australia, and a Swiss/Swedish engineering firm later joined the agreement, which outlined a research strategy for ocean carbon sequestration via direct injection. The members agreed to an initial field experiment, with the hope that if the initial experiment was successful, there would be subsequent field evaluations of increasingly larger scale to evaluate environmental impacts of sequestration and the potential for commercialization. This report is a summary of the evolution of the collaborative effort, the supporting research, and results for the International Collaboration on CO{sub 2} Ocean Sequestration. Almost 100 papers and reports resulted from this collaboration, including 18 peer reviewed journal articles, 46 papers, 28 reports, and 4 graduate theses. A full listing of these publications is in the reference section.

Howard J. Herzog; E. Eric Adams

2005-04-01T23:59:59.000Z

44

Efficient parallel simulation of CO2 geologic sequestration insaline aquifers  

SciTech Connect (OSTI)

An efficient parallel simulator for large-scale, long-termCO2 geologic sequestration in saline aquifers has been developed. Theparallel simulator is a three-dimensional, fully implicit model thatsolves large, sparse linear systems arising from discretization of thepartial differential equations for mass and energy balance in porous andfractured media. The simulator is based on the ECO2N module of the TOUGH2code and inherits all the process capabilities of the single-CPU TOUGH2code, including a comprehensive description of the thermodynamics andthermophysical properties of H2O-NaCl- CO2 mixtures, modeling singleand/or two-phase isothermal or non-isothermal flow processes, two-phasemixtures, fluid phases appearing or disappearing, as well as saltprecipitation or dissolution. The new parallel simulator uses MPI forparallel implementation, the METIS software package for simulation domainpartitioning, and the iterative parallel linear solver package Aztec forsolving linear equations by multiple processors. In addition, theparallel simulator has been implemented with an efficient communicationscheme. Test examples show that a linear or super-linear speedup can beobtained on Linux clusters as well as on supercomputers. Because of thesignificant improvement in both simulation time and memory requirement,the new simulator provides a powerful tool for tackling larger scale andmore complex problems than can be solved by single-CPU codes. Ahigh-resolution simulation example is presented that models buoyantconvection, induced by a small increase in brine density caused bydissolution of CO2.

Zhang, Keni; Doughty, Christine; Wu, Yu-Shu; Pruess, Karsten

2007-01-01T23:59:59.000Z

45

Modeling Coal Matrix Shrinkage and Differential Swelling with CO2 Injection for Enhanced Coalbed Methane Recovery and Carbon Sequestration Applications  

SciTech Connect (OSTI)

Matrix shrinkage and swelling can cause profound changes in porosity and permeability of coalbed methane reservoirs during depletion or when under CO{sub 2} injection processes, with significant implication for primary or enhanced methane recovery. Two models that are used to describe these effects are discussed. The first was developed by Advanced Resources International (ARI) and published in 1990 by Sawyer, et al. The second model was published by Palmer and Mansoori in 1996. This paper shows that the two provide equivalent results for most applications. However, their differences in formulation cause each to have relative advantages and disadvantages under certain circumstances. Specifically, the former appears superior for undersaturated coalbed methane reservoirs while the latter would be better if a case is found where matrix swelling is strongly disproportional to gas concentration. Since its presentation in 1996, the Palmer and Mansoori model has justifiably received much critical praise. However, the model developed by ARI for the COMET reservoir simulation program has been in use since 1990, and has significant advantages in certain settings. A review of data published by Levine in 1996 reveals that carbon dioxide causes a greater degree of coal matrix swelling compared to methane, even when measured on a unit of concentration basis. This effect is described in this report as differential swelling. Differential swelling may have important consequences for enhanced coalbed methane and carbon sequestration projects. To handle the effects of differential swelling, an extension to the matrix shrinkage and swelling model used by the COMET simulator is presented and shown to replicate the data of Levine. Preliminary field results from a carbon dioxide injection project are also presented in support of the extended model. The field evidence supports that considerable changes to coal permeability occur with CO{sub 2} injection, with significant implication for the design, implementation and performance of enhanced coalbed methane recovery and CO{sub 2} sequestration projects.

L. J. Pekot; S. R. Reeves

2002-03-31T23:59:59.000Z

46

Aquifer Management for CO2 Sequestration  

E-Print Network [OSTI]

Storage of carbon dioxide is being actively considered for the reduction of green house gases. To make an impact on the environment CO2 should be put away on the scale of gigatonnes per annum. The storage capacity of deep saline aquifers...

Anchliya, Abhishek

2010-07-14T23:59:59.000Z

47

Time-lapse seismic modeling and production data assimilation for enhanced oil recovery and CO2 sequestration  

E-Print Network [OSTI]

Production from a hydrocarbon reservoir is typically supported by water or carbon dioxide (CO2) injection. CO2 injection into hydrocarbon reservoirs is also a promising solution for reducing environmental hazards from the release of green house...

Kumar, Ajitabh

2009-05-15T23:59:59.000Z

48

Uncertainty quantification for CO2 sequestration and enhanced oil recovery  

E-Print Network [OSTI]

This study develops a statistical method to perform uncertainty quantification for understanding CO2 storage potential within an enhanced oil recovery (EOR) environment at the Farnsworth Unit of the Anadarko Basin in northern Texas. A set of geostatistical-based Monte Carlo simulations of CO2-oil-water flow and reactive transport in the Morrow formation are conducted for global sensitivity and statistical analysis of the major uncertainty metrics: net CO2 injection, cumulative oil production, cumulative gas (CH4) production, and net water injection. A global sensitivity and response surface analysis indicates that reservoir permeability, porosity, and thickness are the major intrinsic reservoir parameters that control net CO2 injection/storage and oil/gas recovery rates. The well spacing and the initial water saturation also have large impact on the oil/gas recovery rates. Further, this study has revealed key insights into the potential behavior and the operational parameters of CO2 sequestration at CO2-EOR s...

Dai, Zhenxue; Fessenden-Rahn, Julianna; Middleton, Richard; Pan, Feng; Jia, Wei; Lee, Si-Yong; McPherson, Brian; Ampomah, William; Grigg, Reid

2014-01-01T23:59:59.000Z

49

Center for By-Products Utilization CO2 SEQUESTRATION  

E-Print Network [OSTI]

Center for By-Products Utilization CO2 SEQUESTRATION IN NON-AIR ENTRAINED CONCRETE By Tarun R. Naik. Maximize environmental benefits: resource conservation, clean water, and clean air. #12;Center for By-Products, Italy, June 30, 2010. #12;Center for By-Products Utilization UWM Center for By-Products Utilization

Saldin, Dilano

50

UPDATE ON THE INTERNATIONAL EXPERIMENT ON CO2 OCEAN SEQUESTRATION  

E-Print Network [OSTI]

in the deep ocean, forming a buoyant plume. Sea water will be entrained into the rising droplet plume Center, Bergen, Norway 4 Norwegian Institute for Water Research (NIVA), Bergen, Norway 5 University objective of our project on CO2 ocean sequestration is to investigate its technical feasibility

51

A Feasibility Study of Non-Seismic Geophysical Methods forMonitoring Geologic CO2 Sequestration  

SciTech Connect (OSTI)

Because of their wide application within the petroleumindustry it is natural to consider geophysical techniques for monitoringof CO2 movement within hydrocarbon reservoirs, whether the CO2 isintroduced for enhanced oil/gas recovery or for geologic sequestration.Among the available approaches to monitoring, seismic methods are by farthe most highly developed and applied. Due to cost considerations, lessexpensive techniques have recently been considered. In this article, therelative merits of gravity and electromagnetic (EM) methods as monitoringtools for geological CO2 sequestration are examined for two syntheticmodeling scenarios. The first scenario represents combined CO2 enhancedoil recovery (EOR) and sequestration in a producing oil field, theSchrader Bluff field on the north slope of Alaska, USA. The secondscenario is a simplified model of a brine formation at a depth of 1,900m.

Gasperikova, Erika; Hoversten, G. Michael

2006-07-01T23:59:59.000Z

52

An improved strategy to detect CO2 leakage for verification of geologic carbon sequestration  

E-Print Network [OSTI]

An improved strategy to detect CO2 leakage for verification of geologic carbon sequestration J. L the success of geologic carbon sequestration projects. To detect subtle CO2 leakage signals, we present), An improved strategy to detect CO2 leakage for verification of geologic carbon sequestration, Geophys. Res

Hilley, George

53

Assessment of Basin-Scale Hydrologic Impacts of CO2 Sequestration, Illinois Basin1 Mark Person*1  

E-Print Network [OSTI]

: Mount Simon, Illinois Basin, CO2, earthquakes, pressure, brine transport69 #12;Page | 3 1. IntroductionPage | 1 Assessment of Basin-Scale Hydrologic Impacts of CO2 Sequestration, Illinois Basin1 2 3 4 sharp-interface models of CO2 injection were constructed for the Illinois49 Basin in which porosity

Gable, Carl W.

54

Practical and Economic Aspects of the Ex-Situ Process: Implications for CO2 Sequestration  

Science Journals Connector (OSTI)

Practical and Economic Aspects of the Ex-Situ Process: Implications for CO2 Sequestration ... The cost for capturing CO2 from a coal and/or gas fired plant varies between 30 to 60 $/t CO2. ...

Sohrab Zendehboudi; Alireza Bahadori; Ali Lohi; Ali Elkamel; Ioannis Chatzis

2012-11-13T23:59:59.000Z

55

Natural CO2 Reservoirs on the Colorado Plateau Â… Candidates for CO2 Sequestration  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

CO CO 2 Reservoirs on the Colorado Plateau and Southern Rocky Mountains: Candidates for CO 2 Sequestration. R. Allis (nrugs.rallis@state.ut.us; 801-537-3301) T. Chidsey (nrugs.tchidsey@state.ut.us; 801-537-3364) W. Gwynn (nrugs.wgwynn@state.ut.us; 801-537-3366) C. Morgan (nrugs.cmorgan@state.ut.us; 801-537-3370) Utah Geological Survey P.O. Box 146100 Salt Lake City, UT 84114 S. White (s.white@irl.cri.nz; 64-4-569-0000) Industrial Research Ltd. P.O. Box 31-310 Lower Hutt, New Zealand M. Adams (madams@egi.utah.edu; 801-585-7784) J. Moore (jmoore@egi.utah.edu; 801-585-6931) Energy and Geoscience Institute, 427 Wakara Way, Suite 300 Salt Lake City, UT84107 Abstract Numerous natural accumulations of CO 2 -dominant gases have been discovered as a result of

56

Summary Report on CO2 Geologic Sequestration & Water Resources Workshop  

E-Print Network [OSTI]

10 th Annual Conference on Carbon Capture and Sequestration,2 saturated brines. In 10th Carbon Capture and SequestrationIn: 9 th Annual Carbon Capture & Sequestration Meeting,

Varadharajan, C.

2013-01-01T23:59:59.000Z

57

CO2 SEQUESTRATION POTENTIAL OF TEXAS LOW-RANK COALS  

SciTech Connect (OSTI)

The objectives of this project are to evaluate the feasibility of carbon dioxide (CO{sub 2}) sequestration in Texas low-rank coals and to determine the potential for enhanced coalbed methane (CBM) recovery as an added benefit of sequestration. The main objective for this reporting period was to further characterize the three areas selected as potential CO{sub 2} sequestration sites. Well-log data are critical for defining depth, thickness, number, and grouping of coal seams at the proposed sequestration sites. Thus, we purchased 12 hardcopy well logs (in addition to 15 well logs obtained during previous quarter) from a commercial source and digitized them to make coal-occurrence maps and cross sections. Detailed correlation of coal zones is important for reservoir analysis and modeling. Thus, we correlated and mapped Wilcox Group subdivisions--the Hooper, Simsboro and Calvert Bluff formations, as well as the coal-bearing intervals of the Yegua and Jackson formations in well logs. To assess cleat properties and describe coal characteristics, we made field trips to Big Brown and Martin Lake coal mines. This quarter we also received CO{sub 2} and methane sorption analyses of the Sandow Mine samples, and we are assessing the results. GEM, a compositional simulator developed by the Computer Modeling Group (CMG), was selected for performing the CO{sub 2} sequestration and enhanced CBM modeling tasks for this project. This software was used to conduct preliminary CO{sub 2} sequestration and methane production simulations in a 5-spot injection pattern. We are continuing to pursue a cooperative agreement with Anadarko Petroleum, which has already acquired significant relevant data near one of our potential sequestration sites.

Duane A. McVay; Walter B. Ayers Jr.; Jerry L. Jensen

2003-10-01T23:59:59.000Z

58

CO2 SEQUESTRATION POTENTIAL OF TEXAS LOW-RANK COALS  

SciTech Connect (OSTI)

The objectives of this project are to evaluate the feasibility of carbon dioxide (CO{sub 2}) sequestration in Texas low-rank coals and to determine the potential for enhanced coalbed methane (CBM) recovery as an added benefit of sequestration. The primary objectives for this reporting period were to construct a coal geological model for reservoir analysis and to continue modeling studies of CO{sub 2} sequestration performance in coalbed methane reservoirs under various operational conditions. Detailed correlation of coal zones is important for reservoir analysis and modeling. Therefore, we interpreted and created isopleth maps of coal occurrences, and correlated individual coal seams within the coal bearing subdivisions of the Wilcox Group--the Hooper, Simsboro and Calvert Bluff formations. Preliminary modeling studies were run to determine if gravity effects would affect the performance of CO{sub 2} sequestration in coalbed methane reservoirs. Results indicated that gravity could adversely affect sweep efficiency and, thus, volumes of CO{sub 2} sequestered and methane produced in thick, vertically continuous coals. Preliminary modeling studies were also run to determine the effect of injection gas composition on sequestration in low-rank coalbeds. Injected gas composition was varied from pure CO{sub 2} to pure N{sub 2}, and results show that increasing N{sub 2} content degrades CO{sub 2} sequestration and methane production performance. We have reached a Data Exchange Agreement with Anadarko Petroleum Corporation. We are currently incorporating the Anadarko data into our work, and expect these data to greatly enhance the accuracy and value of our studies.

Duane A. Mcvay; Walter B. Ayers, Jr.; Jerry L. Jensen

2004-02-01T23:59:59.000Z

59

CO2 displacement mechanisms: phase equilibria effects and carbon dioxide sequestration studies.  

E-Print Network [OSTI]

??Supercritical carbon dioxide is injected into underground formations to enhance oil recovery and for subsurface sequestration to minimize the impact of CO2 emissions due to… (more)

Pasala, Sangeetha M.

2010-01-01T23:59:59.000Z

60

CO2 leakage in a Geological Carbon Sequestration system: Scenario development and analysis.  

E-Print Network [OSTI]

?? The aim of this project was to study the leakage of CO2 in a Geological Carbon Sequestration (GCS) system. To define the GCS system,… (more)

Basirat, Farzad

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "modeling co2 sequestration" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

In-Situ MVA of CO2 Sequestration Using Smart Field Technology  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

In-Situ MVA of CO 2 Sequestration Using Smart Field Technology Background Through its core research and development program administered by the National Energy Technology...

62

Modeling of CO2 storage in aquifers  

E-Print Network [OSTI]

Feb 6, 2011 ... atmosphere, increasing its temperature (greenhouse effect). To minimize climate change impacts, geological sequestration of CO2 is an ...

santos,,,

63

CO2 Sequestration Potential of Texas Low-Rank Coals  

SciTech Connect (OSTI)

The objectives of this project are to evaluate the feasibility of carbon dioxide (CO{sub 2}) sequestration in Texas low-rank coals and to determine the potential for enhanced coalbed methane (ECBM) recovery as an added benefit of sequestration. The main objectives for this reporting period were to (1) determine the effects of permeability anisotropy on performance of CO{sub 2} sequestration and ECBM production in the Lower Calvert Bluff Formation (LCB) of the Wilcox Group coals in east-central Texas, and (2) begin reservoir and economic analyses of CO{sub 2} sequestration and ECBM production using horizontal wells. To evaluate the effects of permeability anisotropy on CO{sub 2} sequestration and ECBM in LCB coal beds, we conducted deterministic reservoir modeling studies of 100% CO{sub 2} gas injection for the 6,200-ft depth base case (Case 1b) using the most likely values of the reservoir parameters. Simulation results show significant differences in the cumulative volumes of CH{sub 4} produced and CO{sub 2} injected due to permeability anisotropy, depending on the orientation of injection patterns relative to the orientation of permeability anisotropy. This indicates that knowledge of the magnitude and orientation of permeability anisotropy will be an important consideration in the design of CO{sub 2} sequestration and ECBM projects. We continued discussions with Anadarko Petroleum regarding plans for additional coal core acquisition and laboratory work to further characterize Wilcox low-rank coals. As part of the technology transfer for this project, we submitted the paper SPE 100584 for presentation at the 2006 SPE Gas Technology Symposium to be held in Calgary, Alberta, Canada on May 15-18, 2006.

Duane A. McVay; Walter B. Ayers, Jr; Jerry L. Jensen

2006-05-01T23:59:59.000Z

64

Influence of Rock Types on Seismic Monitoring of CO2 Sequestration in Carbonate Reservoirs  

E-Print Network [OSTI]

) techniques such as high pressure CO2 injection may normally be required to recover oil in place in carbonate reservoirs. This study addresses how different rock types can influence the seismic monitoring of CO2 sequestration in carbonates. This research...

Mammadova, Elnara

2012-10-19T23:59:59.000Z

65

Mineral sequestration of CO2 by aqueous carbonation of1 coal combustion fly-ash2  

E-Print Network [OSTI]

1 Mineral sequestration of CO2 by aqueous carbonation of1 coal combustion fly-ash2 3 G. Montes that could possibly4 contribute to reducing carbon dioxide emissions is the in-situ mineral sequestration (long term5 geological storage) or the ex-situ mineral sequestration (controlled industrial reactors

Paris-Sud XI, Université de

66

Carbon Sequestration Partner Initiates Drilling of CO2 Injection Well in  

Broader source: Energy.gov (indexed) [DOE]

Sequestration Partner Initiates Drilling of CO2 Injection Sequestration Partner Initiates Drilling of CO2 Injection Well in Illinois Basin Carbon Sequestration Partner Initiates Drilling of CO2 Injection Well in Illinois Basin February 17, 2009 - 12:00pm Addthis Washington, D.C. -- The Midwest Geological Sequestration Consortium (MGSC), one of seven regional partnerships created by the U.S. Department of Energy (DOE) to advance carbon sequestration technologies nationwide, has begun drilling the injection well for their large-scale carbon dioxide (CO2) injection test in Decatur, Illinois. The test is part of the development phase of the Regional Carbon Sequestration Partnerships program, an Office of Fossil Energy initiative launched in 2003 to determine the best approaches for capturing and permanently storing gases that can contribute

67

CO2 Sequestration Potential of Texas Low-Rank Coals  

SciTech Connect (OSTI)

The objectives of this project are to evaluate the feasibility of carbon dioxide (CO{sub 2}) sequestration in Texas low-rank coals and to determine the potential for enhanced coalbed methane (CBM) recovery as an added benefit of sequestration. The primary objectives for this reporting period were to construct a coal geological model for reservoir analysis and to continue acquisition of data pertinent to coal characterization that would help in determining the feasibility of carbon dioxide sequestration. Structural analysis and detailed correlation of coal zones are important for reservoir analysis and modeling. Evaluation of existing well logs indicates local structural complexity that complicates interpretations of continuity of the Wilcox Group coal zones. Therefore, we have begun searching for published structural maps for the areas of potential injection CO{sub 2}, near the coal-fired power plants. Preliminary evaluations of data received from Anadarko Petroleum Corporation suggest that coal properties and gas content and chemical composition vary greatly among coal seams. We are assessing the stratigraphic and geographic distributions and the weight of coal samples that Anadarko has provided to select samples for further laboratory analysis. Our goal is to perform additional isotherm analyses with various pure and/or mixed gases to enhance our characterization model. Additionally, we are evaluating opportunities for field determination of permeability with Anadarko, utilizing one of their wells.

Duane A. McVay; Walter B. Ayers, Jr.; Jerry L. Jensen

2004-04-01T23:59:59.000Z

68

CO2 SEQUESTRATION POTENTIAL OF TEXAS LOW-RANK COALS  

SciTech Connect (OSTI)

The objectives of this project are to evaluate the feasibility of carbon dioxide (CO{sub 2}) sequestration in Texas low-rank coals and to determine the potential for enhanced coalbed methane (CBM) recovery as an added benefit of sequestration. The main objective for this reporting period was to perform pressure transient testing to determine permeability of deep Wilcox coal to use as additional, necessary data for modeling performance of CO{sub 2} sequestration and enhanced coalbed methane recovery. To perform permeability testing of the Wilcox coal, we worked with Anadarko Petroleum Corporation in selecting the well and intervals to test and in designing the pressure transient test. Anadarko agreed to allow us to perform permeability tests in coal beds in an existing shut-in well (Well APCT2). This well is located in the region of the Sam K. Seymour power station, a site that we earlier identified as a major point source of CO{sub 2} emissions. A service company, Pinnacle Technologies Inc. (Pinnacle) was contracted to conduct the tests in the field. Intervals tested were 2 coal beds with thicknesses of 3 and 7 feet, respectively, at approximately 4,100 ft depth in the Lower Calvert Bluff Formation of the Wilcox Group in east-central Texas. Analyses of pressure transient test data indicate that average values for coalbed methane reservoir permeability in the tested coals are between 1.9 and 4.2 mD. These values are in the lower end of the range of permeability used in the preliminary simulation modeling. These new coal fracture permeability data from the APCT2 well, along with the acquired gas compositional analyses and sorption capacities of CO{sub 2}, CH{sub 4}, and N{sub 2}, complete the reservoir description phase of the project. During this quarter we also continued work on reservoir and economic modeling to evaluate performance of CO{sub 2} sequestration and enhanced coalbed methane recovery.

Duane A. McVay; Walter B. Ayers Jr.; Jerry L. Jensen

2005-05-01T23:59:59.000Z

69

CO2 Sequestration Potential of Texas Low-Rank Coals  

SciTech Connect (OSTI)

The objectives of this project are to evaluate the feasibility of carbon dioxide (CO{sub 2}) sequestration in Texas low-rank coals and to determine the potential for enhanced coalbed methane (ECBM) recovery as an added benefit of sequestration. The main objectives for this reporting period were to (1) estimate the potential for CO{sub 2} sequestration in, and methane production from, low-rank coals of the Lower Calvert Bluff Formation of the Wilcox Group in the east-central Texas region, (2) quantify uncertainty associated with these estimates, (3) conduct reservoir and economic analyses of CO{sub 2} sequestration and ECBM production using horizontal wells, and (4) compare the results with those obtained from previous studies of vertical wells. To estimate the total volumes of CO{sub 2} that may be sequestered in, and total volumes of methane that can be produced from, the Wilcox Group low-rank coals in east-central Texas, we used data provided by Anadarko Petroleum Corporation, data obtained during this research, and results of probabilistic simulation modeling studies we conducted. For the analysis, we applied our base-case coal seam characteristics to a 2,930-mi{sup 2} (1,875,200-ac) area where Calvert Bluff coal seams range between 4,000 and 6,200 ft deep. Results of the probabilistic analysis indicate that potential CO{sub 2} sequestration capacity of the coals ranges between 27.2 and 49.2 Tcf (1.57 and 2.69 billion tons), with a mean value of 38 Tcf (2.2 billion tons), assuming a 72.4% injection efficiency. Estimates of recoverable methane resources, assuming a 71.3% recovery factor, range between 6.3 and 13.6 Tcf, with a mean of 9.8 Tcf. As part of the technology transfer for this project, we presented the paper SPE 100584 at the 2006 SPE Gas Technology Symposium held in Calgary, Alberta, Canada, on May 15-18, 2006. Also, we submitted an abstract to be considered for inclusion in a special volume dedicated to CO{sub 2} sequestration in geologic media, which is planned for publication by the American Association of Petroleum Geologists.

Duane A. McVay; Walter B. Ayers Jr; Jerry L. Jensen

2006-07-01T23:59:59.000Z

70

EIS-0473: W.A. Parish Post-Combustion CO2 Capture and Sequestration Project  

Broader source: Energy.gov (indexed) [DOE]

73: W.A. Parish Post-Combustion CO2 Capture and Sequestration 73: W.A. Parish Post-Combustion CO2 Capture and Sequestration Project (PCCS), Fort Bend County, TX EIS-0473: W.A. Parish Post-Combustion CO2 Capture and Sequestration Project (PCCS), Fort Bend County, TX SUMMARY This EIS evaluates the environmental impacts of a proposal to provide financial assistance for a project proposed by NRG Energy, Inc (NRG). DOE selected NRG's proposed W.A. Parish Post-Combustion CO2 Capture and Sequestration Project for a financial assistance award through a competitive process under the Clean Coal Power Initiative Program. NRG would design, construct and operate a commercial-scale carbon dioxide (CO2) capture facility at its existing W.A. Parish Generating Station in Fort Bend County, Texas; deliver the CO2 via a new pipeline to the existing West Ranch oil field in Jackson

71

EIS-0473: W.A. Parish Post-Combustion CO2 Capture and Sequestration Project  

Broader source: Energy.gov (indexed) [DOE]

EIS-0473: W.A. Parish Post-Combustion CO2 Capture and Sequestration EIS-0473: W.A. Parish Post-Combustion CO2 Capture and Sequestration Project (PCCS), Fort Bend County, TX EIS-0473: W.A. Parish Post-Combustion CO2 Capture and Sequestration Project (PCCS), Fort Bend County, TX SUMMARY This EIS evaluates the environmental impacts of a proposal to provide financial assistance for a project proposed by NRG Energy, Inc (NRG). DOE selected NRG's proposed W.A. Parish Post-Combustion CO2 Capture and Sequestration Project for a financial assistance award through a competitive process under the Clean Coal Power Initiative Program. NRG would design, construct and operate a commercial-scale carbon dioxide (CO2) capture facility at its existing W.A. Parish Generating Station in Fort Bend County, Texas; deliver the CO2 via a new pipeline to the existing West Ranch oil field in Jackson

72

Physical Constraints on Geologic CO2 Sequestration in Low-Volume Basalt Formations  

SciTech Connect (OSTI)

Deep basalt formations within large igneous provinces have been proposed as target reservoirs for carbon capture and sequestration on the basis of favorable CO2-water-rock reaction kinetics that suggest carbonate mineralization rates on the order of 102–103 d. Although these results are encouraging, there exists much uncertainty surrounding the influence of fracture-controlled reservoir heterogeneity on commercial-scale CO2 injections in basalt formations. This work investigates the physical response of a low-volume basalt reservoir to commercial-scale CO2 injections using a Monte Carlo numerical modeling experiment such that model variability is solely a function of spatially distributed reservoir heterogeneity. Fifty equally probable reservoirs are simulated using properties inferred from the deep eastern Snake River Plain aquifer in southeast Idaho, and CO2 injections are modeled within each reservoir for 20 yr at a constant mass rate of 21.6 kg s–1. Results from this work suggest that (1) formation injectivity is generally favorable, although injection pressures in excess of the fracture gradient were observed in 4% of the simulations; (2) for an extensional stress regime (as exists within the eastern Snake River Plain), shear failure is theoretically possible for optimally oriented fractures if Sh is less than or equal to 0.70SV; and (3) low-volume basalt reservoirs exhibit sufficient CO2 confinement potential over a 20 yr injection program to accommodate mineral trapping rates suggested in the literature.

Ryan M. Pollyea; Jerry P. Fairley; Robert K. Podgorney; Travis L. McLing

2014-03-01T23:59:59.000Z

73

Small Scale Field Test Demonstrating CO2 Sequestration in Arbuckle...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

CCUS projects. Existing small-scale field projects have been conducted by the Regional Carbon Sequestration Partnerships (RCSP) during their Validation Phase. These small-scale...

74

Summary Report on CO2 Geologic Sequestration & Water Resources Workshop  

E-Print Network [OSTI]

2 exposure in both CO 2 -EOR and natural CO 2 reservoirs (as enhanced oil recovery (EOR) and enhanced gas recovery (2 field injections for CCS-EOR, where the water quality of

Varadharajan, C.

2013-01-01T23:59:59.000Z

75

CO2 Sequestration Potential of Texas Low-Rank Coals  

SciTech Connect (OSTI)

Injection of CO{sub 2} in coalbeds is a plausible method of reducing atmospheric emissions of CO{sub 2}, and it can have the additional benefit of enhancing methane recovery from coal. Most previous studies have evaluated the merits of CO{sub 2} disposal in high-rank coals. The objective of this research was to determine the technical and economic feasibility of CO{sub 2} sequestration in, and enhanced coalbed methane (ECBM) recovery from, low-rank coals in the Texas Gulf Coast area. Our research included an extensive coal characterization program, including acquisition and analysis of coal core samples and well transient test data. We conducted deterministic and probabilistic reservoir simulation and economic studies to evaluate the effects of injectant fluid composition (pure CO{sub 2} and flue gas), well spacing, injection rate, and dewatering on CO{sub 2} sequestration and ECBM recovery in low-rank coals of the Calvert Bluff formation of the Texas Wilcox Group. Shallow and deep Calvert Bluff coals occur in two, distinct, coalbed gas petroleum systems that are separated by a transition zone. Calvert Bluff coals < 3,500 ft deep are part of a biogenic coalbed gas system. They have low gas content and are part of a freshwater aquifer. In contrast, Wilcox coals deeper than 3,500 ft are part of a thermogenic coalbed gas system. They have high gas content and are part of a saline aquifer. CO{sub 2} sequestration and ECBM projects in Calvert Bluff low-rank coals of East-Central Texas must be located in the deeper, unmineable coals, because shallow Wilcox coals are part of a protected freshwater aquifer. Probabilistic simulation of 100% CO{sub 2} injection into 20 feet of Calvert Bluff coal in an 80-acre 5-spot pattern indicates that these coals can store 1.27 to 2.25 Bcf of CO{sub 2} at depths of 6,200 ft, with an ECBM recovery of 0.48 to 0.85 Bcf. Simulation results of flue gas injection (87% N{sub 2}-13% CO{sub 2}) indicate that these same coals can store 0.34 to 0.59 Bcf of CO{sub 2} with an ECBM recovery of 0.68 to 1.20 Bcf. Economic modeling of CO{sub 2} sequestration and ECBM recovery indicates predominantly negative economic indicators for the reservoir depths (4,000 to 6,200 ft) and well spacings investigated, using natural gas prices ranging from $2 to $12 per Mscf and CO{sub 2} credits based on carbon market prices ranging from $0.05 to $1.58 per Mscf CO{sub 2} ($1.00 to $30.00 per ton CO{sub 2}). Injection of flue gas (87% N{sub 2} - 13% CO{sub 2}) results in better economic performance than injection of 100% CO{sub 2}. CO{sub 2} sequestration potential and methane resources in low-rank coals of the Lower Calvert Bluff formation in East-Central Texas are significant. The potential CO{sub 2} sequestration capacity of the coals ranges between 27.2 and 49.2 Tcf (1.57 and 2.69 billion tons), with a mean value of 38 Tcf (2.2 billion tons), assuming a 72.4% injection efficiency. Estimates of recoverable methane resources range between 6.3 and 13.6 Tcf, with a mean of 9.8 Tcf, assuming a 71.3% recovery factor. Moderate increases in gas prices and/or carbon credits could generate attractive economic conditions that, combined with the close proximity of many CO{sub 2} point sources near unmineable coalbeds, could enable commercial CO{sub 2} sequestration and ECBM projects in Texas low-rank coals. Additional studies are needed to characterize Wilcox regional methane coalbed gas systems and their boundaries, and to assess potential of other low-rank coal beds. Results from this study may be transferable to other low-rank coal formations and regions.

Duane McVay; Walter Ayers, Jr.; Jerry Jensen; Jorge Garduno; Gonzola Hernandez; Rasheed Bello; Rahila Ramazanova

2006-08-31T23:59:59.000Z

76

CO2 Sequestration Potential of Texas Low-Rank Coals  

SciTech Connect (OSTI)

The objectives of this project are to evaluate the feasibility of carbon dioxide (CO{sub 2}) sequestration in Texas low-rank coals and to determine the potential for enhanced coalbed methane (ECBM) recovery as an added benefit of sequestration. The main objectives for this reporting period were to perform reservoir simulation and economic sensitivity studies to (1) determine the effects of injection gas composition, (2) determine the effects of injection rate, and (3) determine the effects of coal dewatering prior to CO{sub 2} injection on CO{sub 2} sequestration in the Lower Calvert Bluff Formation (LCB) of the Wilcox Group coals in east-central Texas. To predict CO{sub 2} sequestration and ECBM in LCB coal beds for these three sensitivity studies, we constructed a 5-spot pattern reservoir simulation model and selected reservoir parameters representative of a typical depth, approximately 6,200-ft, of potential LCB coalbed reservoirs in the focus area of East-Central Texas. Simulation results of flue gas injection (13% CO{sub 2} - 87% N{sub 2}) in an 80-acre 5-spot pattern (40-ac well spacing) indicate that LCB coals with average net thickness of 20 ft can store a median value of 0.46 Bcf of CO{sub 2} at depths of 6,200 ft, with a median ECBM recovery of 0.94 Bcf and median CO{sub 2} breakthrough time of 4,270 days (11.7 years). Simulation of 100% CO{sub 2} injection in an 80-acre 5-spot pattern indicated that these same coals with average net thickness of 20 ft can store a median value of 1.75 Bcf of CO{sub 2} at depths of 6,200 ft with a median ECBM recovery of 0.67 Bcf and median CO{sub 2} breakthrough time of 1,650 days (4.5 years). Breakthrough was defined as the point when CO{sub 2} comprised 5% of the production stream for all cases. The injection rate sensitivity study for pure CO{sub 2} injection in an 80-acre 5-spot pattern at 6,200-ft depth shows that total volumes of CO{sub 2} sequestered and methane produced do not have significant sensitivity to injection rate. The main difference is in timing, with longer breakthrough times resulting as injection rate decreases. Breakthrough times for 80-acre patterns (40-acre well spacing) ranged from 670 days (1.8 years) to 7,240 days (19.8 years) for the reservoir parameters and well operating conditions investigated. The dewatering sensitivity study for pure CO{sub 2} injection in an 80-acre 5-spot pattern at 6,200-ft depth shows that total volumes of CO{sub 2} sequestered and methane produced do not have significant sensitivity to dewatering prior to CO{sub 2} injection. As time to start CO{sub 2} injection increases, the time to reach breakthrough also increases. Breakthrough times for 80-acre patterns (40-acre well spacing) ranged from 850 days (2.3 years) to 5,380 days (14.7 years) for the reservoir parameters and well injection/production schedules investigated. Preliminary economic modeling results using a gas price of $7-$8 per Mscf and CO{sub 2} credits of $1.33 per ton CO{sub 2} indicate that injection of flue gas (87% N{sub 2}-13% CO{sub 2}) and 50% N{sub 2}-50% CO{sub 2} are more economically viable than injecting 100% CO{sub 2}. Results also indicate that injection rate and duration and timing of dewatering prior to CO{sub 2} injection have no significant effect on the economic viability of the project(s).

Duane A. McVay; Walter B. Ayers Jr; Jerry L. Jensen

2005-10-01T23:59:59.000Z

77

Exploratory study of some potential environmental impacts of CO2 sequestration in unmineable coal seams  

SciTech Connect (OSTI)

An initial investigation into the potential environmental impacts of CO2 sequestration in unmineable coal seams has been conducted, focusing on changes in the produced water during enhanced coalbed methane (ECBM) production, using a CO2 injection process (CO2-ECBM). A high volatile bituminous coal, Pittsburgh No. 8, was reacted with synthetic produced water and gaseous carbon dioxide at 40°C and 50 bar to evaluate the potential for mobilisation of toxic metals during CO2-ECBM/sequestration. Microscopic and X-ray diffraction analysis of the post-reaction coal samples clearly show evidence of chemical reaction and chemical analysis of the synthetic produced water shows substantial changes in composition. These results suggest that changes to the produced water chemistry and the potential for mobilising toxic trace elements from coal beds are important factors to be considered when evaluating deep, unmineable coal seams for CO2 sequestration.

Hedges, S.W.; Soong, Y.; Jones, R.J.; Harrison, D.K.; Irdi, G.A.; Frommell, E.A.; Dilmore, R.M.; White, C.M.

2007-01-01T23:59:59.000Z

78

Offsetting China's CO2 Emissions by Soil Carbon Sequestration  

Science Journals Connector (OSTI)

Fossil fuel emissions of carbon (C) in China in 2000 was ... % or more of the antecedent soil organic carbon (SOC) pool.Some of the depleted ... . A crude estimated potential of soil C sequestration in China is 1...

R. Lal

2004-08-01T23:59:59.000Z

79

Evaluation of CO2 enhanced oil recovery and sequestration potential in low permeability reservoirs, Yanchang Oilfield, China  

Science Journals Connector (OSTI)

Abstract Sequestrating CO2 in reservoirs can substantially enhance oil recovery and effectively reduce greenhouse gas emission. To evaluate the potential of CO2 enhanced oil recovery (EOR) and sequestration for Yanchang Oilfield in China, a screening standard which was suitable for CO2-EOR and sequestration in Yanchang Oilfield was proposed based on its characteristics of strong heterogeneity, high water content and severe fluid channeling after water flooding. In addition, an efficient calculation method – stream tube simulation method was presented to figure out CO2 sequestration coefficient and oil recovery factor. After screening and evaluating, it turned out that 148 out of 176 blocks in 22 oilfields were suitable for CO2-EOR and sequestration. CO2 flooding after water flooding can produce 180.21 × 106 t more crude oil and sequestrate 223.38 × 106 t CO2. The average incremental oil recovery rate of miscible reservoirs was 12.49% and the average CO2 sequestration coefficient was 0.27 t/t while the two values were 6.83% and 0.18 t/t for immiscible reservoirs. There are comparatively more reservoirs that are suitable for CO2-EOR and sequestration in Yanchang Oilfield than normal, which can obviously enhance oil recovery and means a great potential for CO2 sequestration. CO2-EOR and sequestration in Yanchang Oilfield has a bright application prospect.

D.F. Zhao; X.W. Liao; D.D. Yin

2014-01-01T23:59:59.000Z

80

Analysis of CO2 Separation from Flue Gas, Pipeline Transportation, and Sequestration in Coal  

SciTech Connect (OSTI)

This report was written to satisfy a milestone of the Enhanced Coal Bed Methane Recovery and CO2 Sequestration task of the Big Sky Carbon Sequestration project. The report begins to assess the costs associated with separating the CO2 from flue gas and then injecting it into an unminable coal seam. The technical challenges and costs associated with CO2 separation from flue gas and transportation of the separated CO2 from the point source to an appropriate sequestration target was analyzed. The report includes the selection of a specific coal-fired power plant for the application of CO2 separation technology. An appropriate CO2 separation technology was identified from existing commercial technologies. The report also includes a process design for the chosen technology tailored to the selected power plant that used to obtain accurate costs of separating the CO2 from the flue gas. In addition, an analysis of the costs for compression and transportation of the CO2 from the point-source to an appropriate coal bed sequestration site was included in the report.

Eric P. Robertson

2007-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "modeling co2 sequestration" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

CO2 Sequestration Potential of Texas Low-Rank Coals  

SciTech Connect (OSTI)

The objectives of this project are to evaluate the feasibility of carbon dioxide (CO{sub 2}) sequestration in Texas low-rank coals and to determine the potential for enhanced coalbed methane (ECBM) recovery as an added benefit of sequestration. In this reporting period we revised all of the economic calculations, participated in technology transfer of project results, and began working on project closeout tasks in anticipation of the project ending December 31, 2005. In this research, we conducted five separate simulation investigations, or cases. These cases are (1) CO{sub 2} sequestration base case scenarios for 4,000-ft and 6,200-ft depth coal beds in the Lower Calvert Bluff Formation of east-central Texas, (2) sensitivity study of the effects of well spacing on sequestration, (3) sensitivity study of the effects of injection gas composition, (4) sensitivity study of the effects of injection rate, and (5) sensitivity study of the effects of coal dewatering prior to CO{sub 2} injection/sequestration. Results show that, in most cases, revenue from coalbed methane production does not completely offset the costs of CO{sub 2} sequestration in Texas low-rank coals, indicating that CO{sub 2} injection is not economically feasible for the ranges of gas prices and carbon credits investigated. The best economic performance is obtained with flue gas (13% CO{sub 2} - 87% N{sub 2}) injection, as compared to injection of 100% CO{sub 2} and a mixture of 50% CO{sub 2} and 50% N{sub 2}. As part of technology transfer for this project, we presented results at the West Texas Geological Society Fall Symposium in October 2005 and at the COAL-SEQ Forum in November 2005.

Duane A. McVay; Walter B. Ayers Jr; Jerry L. Jensen

2006-03-01T23:59:59.000Z

82

CO2-H2O mixtures in the geological sequestration of CO2. II ...  

E-Print Network [OSTI]

sequestration (e.g., Garcia, 2003; Pruess et al., 2004; Xu et al.,. 2004) deal with ...... Cramer S. D. (1982) The solubility of methane, carbon dioxide and oxygen in

2005-07-01T23:59:59.000Z

83

CO2 SEQUESTRATION POTENTIAL OF TEXAS LOW-RANK COALS  

SciTech Connect (OSTI)

The objectives of this project are to evaluate the feasibility of carbon dioxide (CO{sub 2}) sequestration in Texas low-rank coals and to determine the potential for enhanced coalbed methane (CBM) recovery as an added benefit of sequestration. The main objectives for this reporting period were to work on Tasks 1 and 2, which consisted of the following subtasks: review literature on CO{sub 2} sequestration and the effect of CO{sub 2} injection on methane production from coalbeds; acquire information on power plant flue gas emissions; acquire data on Texas coal occurrences and properties and formation water quality; construct a digital base map; and select geographic areas and geologic formations for study. Flue gas information, including volumes and compositions, were obtained for major Texas power plants and other industrial sources, such as cement plants. We evaluated and obtained computer mapping software and began building a digital base map that will be used to depict industrial emissions, coal occurrence, and water quality information. Digital data sets allow us to superpose data for visualization and for assessment of CO{sub 2}sequestration issues.

Duane A. McVay; Walter B. Ayers, Jr.; Jerry L. Jensen

2003-02-01T23:59:59.000Z

84

electroseismic monitoring of co2 sequestration: a finite element ...  

E-Print Network [OSTI]

The injection of large amounts of man-produced CO2 in depleted oil wells below ..... [7] SANTOS, J. E., Global and domain-decomposed mixed methods for the ...

Fabio Zyserman

85

A Benign Form of CO2 Sequestration in the Ocean  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

BENIGN FORM OF CO SEQUESTRATION IN THE OCEAN BENIGN FORM OF CO SEQUESTRATION IN THE OCEAN 2 Dan Golomb and Anastasios Angelopoulos University of Massachusetts Lowell, Lowell, MA 01854, USA Dan_Golomb@uml.edu or Taso_Angelopoulos@uml.edu ABSTRACT It is proposed that liquid CO is mixed with pulverized limestone (CaCO ) and seawater in a pressure 2 3 vessel. An emulsion is created which is piped to intermediate depth in the ocean, where the emulsion is released through a diffuser. The emulsion plume has a bulk density of 1.4 kg m , thus it will sink -3 as a gravity current to greater depth from the release point. Several kinetic processes occur simultaneously: (a) the entrainment of seawater by the emulsion plume, (b) the dissolution of CaCO , 3 (c) the dissolution of CO , and (d) the reaction of dissolved CO with CaCO to form bicarbonate.

86

CO2 Sequestration Potential of Texas Low-Rank Coals  

SciTech Connect (OSTI)

The objective of this project is to evaluate the feasibility of carbon dioxide (CO{sub 2}) sequestration in Texas low-rank coals and to determine the potential for enhanced coalbed methane (CBM) recovery as an added benefit of sequestration. The main objectives for this reporting period were to further characterize the three areas selected as potential test sites, to begin assessing regional attributes of natural coal fractures (cleats), which control coalbed permeability, and to interview laboratories for coal sample testing. An additional objective was to initiate discussions with an operating company that has interests in Texas coalbed gas production and CO{sub 2} sequestration potential, to determine their interest in participation and cost sharing in this project. Well-log data are critical for defining depth, thickness, number, and grouping of coal seams at the proposed sequestration sites. Therefore, we purchased 15 well logs from a commercial source to make coal-occurrence maps and cross sections. Log suites included gamma ray (GR), self potential (SP), resistivity, sonic, and density curves. Other properties of the coals in the selected areas were collected from published literature. To assess cleat properties and describe coal characteristics, we made field trips to a Jackson coal outcrop and visited Wilcox coal exposures at the Sandow surface mine. Coal samples at the Sandow mine were collected for CO{sub 2} and methane sorption analyses. We contacted several laboratories that specialize in analyzing coals and selected a laboratory, submitting the Sandow Wilcox coals for analysis. To address the issue of cost sharing, we had fruitful initial discussions with a petroleum corporation in Houston. We reviewed the objectives and status of this project, discussed data that they have already collected, and explored the potential for cooperative data acquisition and exchange in the future. We are pursuing a cooperative agreement with them.

Duane A. McVay; Walter B. Ayers Jr; Jerry L. Jensen

2003-07-01T23:59:59.000Z

87

NETL: News Release - Carbon Sequestration Partner Initiates Drilling of CO2  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

7, 2009 7, 2009 Carbon Sequestration Partner Initiates Drilling of CO2 Injection Well in Illinois Basin Large-Scale Test to Inject One Million Metric Tonnes of Carbon Dioxide into Saline Formation Washington, DC-The Midwest Geological Sequestration Consortium (MGSC), one of seven regional partnerships created by the U.S. Department of Energy (DOE) to advance carbon sequestration technologies nationwide, has begun drilling the injection well for their large-scale carbon dioxide (CO2) injection test in Decatur, Illinois. The test is part of the development phase of the Regional Carbon Sequestration Partnerships program, an Office of Fossil Energy initiative launched in 2003 to determine the best approaches for capturing and permanently storing gases that can contribute to global climate change.

88

CO2 SEQUESTRATION POTENTIAL OF TEXAS LOW-RANK COALS  

SciTech Connect (OSTI)

The objectives of this project are to evaluate the feasibility of carbon dioxide (CO{sub 2}) sequestration in Texas low-rank coals and to determine the potential for enhanced coalbed methane (CBM) recovery as an added benefit of sequestration. The main tasks for this reporting period were to correlate well logs and refine coal property maps, evaluate methane content and gas composition of Wilcox Group coals, and initiate discussions concerning collection of additional, essential data with Anadarko. To assess the volume of CO{sub 2} that may be sequestered and volume of methane that can be produced in the vicinity of the proposed Sam Seymour sequestration site, we used approximately 200 additional wells logs from Anadarko Petroleum Corp. to correlate and map coal properties of the 3 coal-bearing intervals of Wilcox group. Among the maps we are making are maps of the number of coal beds, number of coal beds greater than 5 ft thick, and cumulative coal thickness for each coal interval. This stratigraphic analysis validates the presence of abundant coal for CO{sub 2} sequestration in the Wilcox Group in the vicinity of Sam Seymour power plant. A typical wellbore in this region may penetrate 20 to 40 coal beds with cumulative coal thickness between 80 and 110 ft. Gas desorption analyses of approximately 75 coal samples from the 3 Wilcox coal intervals indicate that average methane content of Wilcox coals in this area ranges between 216 and 276 scf/t, basinward of the freshwater boundary indicated on a regional hydrologic map. Vitrinite reflectance data indicate that Wilcox coals are thermally immature for gas generation in this area. Minor amounts of biogenic gas may be present, basinward of the freshwater line, but we infer that most of the Wilcox coalbed gas in the deep coal beds is migrated thermogenic gas. Analysis based on limited data suggest that sites for CO{sub 2} sequestration and enhanced coalbed gas recovery should be located basinward of the Wilcox freshwater contour, where methane content is high and the freshwater aquifer can be avoided.

Duane A. McVay; Walter B. Ayers, Jr.; Jerry L. Jensen

2004-07-01T23:59:59.000Z

89

Capture and Sequestration of CO2 at the Boise White Paper Mill  

SciTech Connect (OSTI)

This report documents the efforts taken to develop a preliminary design for the first commercial-scale CO2 capture and sequestration (CCS) project associated with biomass power integrated into a pulp and paper operation. The Boise Wallula paper mill is located near the township of Wallula in Southeastern Washington State. Infrastructure at the paper mill will be upgraded such that current steam needs and a significant portion of the current mill electric power are supplied from a 100% biomass power source. A new biomass power system will be constructed with an integrated amine-based CO2 capture plant to capture approximately 550,000 tons of CO2 per year for geologic sequestration. A customized version of Fluor Corporation’s Econamine Plus™ carbon capture technology will be designed to accommodate the specific chemical composition of exhaust gases from the biomass boiler. Due to the use of biomass for fuel, employing CCS technology represents a unique opportunity to generate a net negative carbon emissions footprint, which on an equivalent emissions reduction basis is 1.8X greater than from equivalent fossil fuel sources (SPATH and MANN, 2004). Furthermore, the proposed project will offset a significant amount of current natural gas use at the mill, equating to an additional 200,000 tons of avoided CO2 emissions. Hence, the total net emissions avoided through this project equates to 1,100,000 tons of CO2 per year. Successful execution of this project will provide a clear path forward for similar kinds of emissions reduction that can be replicated at other energy-intensive industrial facilities where the geology is suitable for sequestration. This project also represents a first opportunity for commercial development of geologic storage of CO2 in deep flood basalt formations. The Boise paper mill site is host to a Phase II pilot study being carried out under DOE’s Regional Carbon Partnership Program. Lessons learned from this pilot study and other separately funded projects studying CO2 sequestration in basalts will be heavily leveraged in developing a suitable site characterization program and system design for permanent sequestration of captured CO2. The areal extent, very large thickness, high permeability in portions of the flows, and presence of multiple very low permeability flow interior seals combine to produce a robust sequestration target. Moreover, basalt formations are quite reactive with water-rich supercritical CO2 and formation water that contains dissolved CO2 to generate carbonate minerals, providing for long-term assurance of permanent sequestration. Sub-basalt sediments also exist at the site providing alternative or supplemental storage capacity.

B.P. McGrail; C.J. Freeman; G.H. Beeman; E.C. Sullivan; S.K. Wurstner; C.F. Brown; R.D. Garber; D. Tobin E.J. Steffensen; S. Reddy; J.P. Gilmartin

2010-06-16T23:59:59.000Z

90

Interdisciplinary Investigation of CO2 Sequestration in Depleted Shale Gas Formations  

SciTech Connect (OSTI)

This project investigates the feasibility of geologic sequestration of CO2 in depleted shale gas reservoirs from an interdisciplinary viewpoint. It is anticipated that over the next two decades, tens of thousands of wells will be drilled in the 23 states in which organic-rich shale gas deposits are found. This research investigates the feasibility of using these formations for sequestration. If feasible, the number of sites where CO2 can be sequestered increases dramatically. The research embraces a broad array of length scales ranging from the ~10 nanometer scale of the pores in the shale formations to reservoir scale through a series of integrated laboratory and theoretical studies.

Zoback, Mark; Kovscek, Anthony; Wilcox, Jennifer

2013-09-30T23:59:59.000Z

91

Semi-analytical Solution for Multiphase Fluid Flow Applied to CO 2 Sequestration in Geologic Porous Media  

E-Print Network [OSTI]

The increasing concentration of CO_(2) has been linked to global warming and changes in climate. Geologic sequestration of CO_(2) in deep saline aquifers is a proposed greenhouse gas mitigation technology with potential to significantly reduce...

Mohamed, Ahmed Mohamed Anwar Sayed

2013-08-01T23:59:59.000Z

92

Seal integrity and feasibility of CO2 sequestration in the Teapot Dome EOR pilot: geomechanical site characterization  

Science Journals Connector (OSTI)

This paper reports a preliminary investigation of CO2 sequestration and seal integrity at Teapot Dome oil field, Wyoming, USA, with...2 leakage along reservoir-bounding faults. CO2 injection into reservoirs creat...

Laura Chiaramonte; Mark D. Zoback; Julio Friedmann; Vicki Stamp

2008-06-01T23:59:59.000Z

93

Third Carbon Sequestration Atlas Estimates Up to 5,700 Years of CO2 Storage  

Broader source: Energy.gov (indexed) [DOE]

Third Carbon Sequestration Atlas Estimates Up to 5,700 Years of CO2 Third Carbon Sequestration Atlas Estimates Up to 5,700 Years of CO2 Storage Potential in U.S. and Portions of Canada Third Carbon Sequestration Atlas Estimates Up to 5,700 Years of CO2 Storage Potential in U.S. and Portions of Canada December 1, 2010 - 12:00pm Addthis Washington, DC - There could be as much as 5,700 years of carbon dioxide (CO2) storage potential available in geologic formations in the United States and portions of Canada, according to the latest edition of the U.S. Department of Energy's (DOE) Carbon Sequestration Atlas (Atlas III). The updated preliminary estimate, based on current emission rates, documents 1,800 billion to more than 20,000 billion metric tons of CO2 storage potential in saline formations, oil and gas reservoirs, and unmineable coal areas. This suggests the availability of approximately

94

CO2 Sequestration by Direct Gas?Solid Carbonation of Air Pollution Control (APC) Residues  

Science Journals Connector (OSTI)

CO2 Sequestration by Direct Gas?Solid Carbonation of Air Pollution Control (APC) Residues ... Furthermore, because fossil fuels are projected to be a dominant energy resource in the 21st century,1 technologies for sequestering emissions from fossil fuel combustion in a safe and definitive manner are being developed and implemented. ... According to these authors, the solution containing free calcium could then be used in a carbonation process for capturing CO2 directly from air. ...

Renato Baciocchi; Alessandra Polettini; Raffaella Pomi; Valentina Prigiobbe; Viktoria Nikulshina Von Zedwitz; Aldo Steinfeld

2006-07-07T23:59:59.000Z

95

Potential for CO2 Sequestration and Enhanced Coalbed Methane Production, Blue Creek Field, NW Black Warrior Basin, Alabama  

E-Print Network [OSTI]

Carbon dioxide (CO2) is a primary source of greenhouse gases. Injection of CO2 from power plants near coalbed reservoirs is a win-win method to reducing emissions of CO2 to the atmosphere. Limited studies have investigated CO2 sequestration...

He, Ting

2011-02-22T23:59:59.000Z

96

System-level modeling for geological storage of CO2  

SciTech Connect (OSTI)

One way to reduce the effects of anthropogenic greenhousegases on climate is to inject carbon dioxide (CO2) from industrialsources into deep geological formations such as brine formations ordepleted oil or gas reservoirs. Research has and is being conducted toimprove understanding of factors affecting particular aspects ofgeological CO2 storage, such as performance, capacity, and health, safetyand environmental (HSE) issues, as well as to lower the cost of CO2capture and related processes. However, there has been less emphasis todate on system-level analyses of geological CO2 storage that considergeological, economic, and environmental issues by linking detailedrepresentations of engineering components and associated economic models.The objective of this study is to develop a system-level model forgeological CO2 storage, including CO2 capture and separation,compression, pipeline transportation to the storage site, and CO2injection. Within our system model we are incorporating detailedreservoir simulations of CO2 injection and potential leakage withassociated HSE effects. The platform of the system-level modelingisGoldSim [GoldSim, 2006]. The application of the system model is focusedon evaluating the feasibility of carbon sequestration with enhanced gasrecovery (CSEGR) in the Rio Vista region of California. The reservoirsimulations are performed using a special module of the TOUGH2 simulator,EOS7C, for multicomponent gas mixtures of methane and CO2 or methane andnitrogen. Using this approach, the economic benefits of enhanced gasrecovery can be directly weighed against the costs, risks, and benefitsof CO2 injection.

Zhang, Yingqi; Oldenburg, Curtis M.; Finsterle, Stefan; Bodvarsson, Gudmundur S.

2006-04-24T23:59:59.000Z

97

Industrial CO2 Removal: CO2 Capture from Ambient Air and Geological Sequestration  

SciTech Connect (OSTI)

This abstract and its accompanying presentation will provide an overview of two distinct industrial processes for removing carbon dioxide (CO2) from the atmosphere as a means of addressing anthropogenic climate change. The first of these is carbon dioxide capture and storage (CCS) coupled with large scale biomass production (hereafter referred to as bioCCS). The second is CO2 capture from ambient air via industrial systems (hereafter referred to as direct air capture (DAC)). In both systems, the captured CO2 would be injected into deep geologic formations so as to isolate it from the atmosphere. The technical literature is clear that both of these technologies are technically feasible as of today (IPCC, 2005; Keith, 2009; Lackner, 2009; Luckow et al., 2010; Ranjan and Herzog, 2011). What is uncertain is the relative cost of these industrial ambient-air CO2 removal systems when compared to other emissions mitigation measures, the ultimate timing and scale of their deployment, and the resolution of potential site specific constraints that would impact their ultimate commercial deployment.

Dooley, James J.

2011-06-08T23:59:59.000Z

98

Microbial electrolysis desalination and chemical-production cell for CO2 sequestration  

E-Print Network [OSTI]

Microbial electrolysis desalination and chemical-production cell for CO2 sequestration Xiuping Zhu organic matter. Desalinated water produced at the same time. Acid solutions used to accelerate Accepted 14 February 2014 Available online 23 February 2014 Keywords: Microbial electrolysis Desalination

99

Assessing leakage detectability at geologic CO2 sequestration sites using the probabilistic collocation method  

E-Print Network [OSTI]

for reducing greenhouse gas emission. A primary goal of geologic carbon sequestration is to ensure, tested, monitored, funded, and closed [2]. Recently, the US Department of Energy releases best practice manuals on risk analysis and management activities related to CO2 storage projects [3,4]. Anothe

Lu, Zhiming

100

Reducing Risk in Basin Scale CO2 Sequestration: A Framework for Integrated Monitoring Design  

Science Journals Connector (OSTI)

CO2 sequestration is an attractive option for mitigating climate change because it can be deployed immediately and at scale, with minimal disruption to the existing energy production and distribution infrastructures. ... These include constant fluid properties and wind velocity profiles. ... Sleipner, offshore Norway (113) ...

C. J. Seto; G. J. McRae

2011-01-10T23:59:59.000Z

Note: This page contains sample records for the topic "modeling co2 sequestration" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

Laboratory Measurement of Geophysical Properties for Monitoring of CO2 Sequestration  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Laboratory Measurement of Geophysical Properties for Monitoring of Laboratory Measurement of Geophysical Properties for Monitoring of CO 2 Sequestration Larry R. Myer (LRMyer@lbl.gov; 510/486-6456) Lawrence Berkeley National Laboratory Earth Science Division One Cyclotron Road, MS 90-1116 Berkeley, CA 94720 Introduction Geophysical techniques will be used in monitoring of geologic sequestration projects. Seismic and electrical geophysical techniques will be used to map the movement of CO 2 in the subsurface and to establish that the storage volume is being efficiently utilized and the CO 2 is being safely contained within a known region. Rock physics measurements are required for interpretation of the geophysical surveys. Seismic surveys map the subsurface velocities and attenuation while electrical surveys map the conductivity. Laboratory measurements are required to convert field

102

In-Situ MVA of CO2 Sequestration Using Smart Field Technology  

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In-Situ MVA of CO In-Situ MVA of CO 2 Sequestration Using Smart Field Technology Background Through its core research and development program administered by the National Energy Technology Laboratory (NETL), the U.S. Department of Energy (DOE) emphasizes monitoring, verification, and accounting (MVA), as well as computer simulation and risk assessment, of possible carbon dioxide (CO 2 ) leakage at CO 2 geologic storage sites. MVA efforts focus on the development and deployment of technologies that can provide an accurate accounting of stored CO 2 , with a high level of confidence that the CO 2 will remain stored underground permanently. Effective application of these MVA technologies will ensure the safety of geologic storage projects with respect to both human health and the environment, and can provide the basis for establishing

103

Matrix Shrinkage and Swelling Effects on Economics of Enhanced Coalbed Methane Production and CO2 Sequestration in Coal  

SciTech Connect (OSTI)

Increases in CO2 levels in the atmosphere and their contributions to global climate change have been a major concern. It has been shown that CO2 injection can enhance the methane recovery from coal. Accordingly, sequestration costs can be partially offset by the value added product. Indeed, coal seam sequestration may be profitable, particularly with the introduction of incentives for CO2 sequestration. Hence, carbon dioxide sequestration in unmineable coals is a very attractive option, not only for environmental reasons, but also for possible economic benefits. Darcy flow through cleats is an important transport mechanism in coal. Cleat compression and permeability changes due to gas sorption desorption, changes of effective stress, and matrix swelling and shrinkage introduce a high level of complexity into the feasibility of a coal sequestration project. The economic effects of carbon dioxide-induced swelling on permeabilities and injectivities has received little (if any) detailed attention. Carbon dioxide and methane have different swelling effects on coal. In this work, the Palmer-Mansoori model for coal shrinkage and permeability increases during primary methane production was re-written to also account for coal swelling caused by carbon dioxide sorption. The generalized model was added to PSU-COALCOMP, a dual porosity reservoir simulator for primary and enhanced coalbed methane production. A standard five-spot of vertical wells and representative coal properties for Appalachian coals were used.[1] Simulations and sensitivity analyses were performed with the modified simulator for nine different parameters, including coal seam and operational parameters and economic criteria. The coal properties and operating parameters that were varied included Young’s modulus, Poisson’s ratio, the cleat porosity, and the injection pressure. The economic variables included CH4 price, CO2 cost, CO2 credit, water disposal cost, and interest rate. Net present value analyses of the simulation results included profits due to methane production, and potential incentives for CO2 sequestered. This work shows that for some coal-property values, the compressibility and cleat porosity of coal may be more important than more purely economic criteria.

Gorucu, F.B.; Jikich, S.A.; Bromhal, G.S.; Sams, W.N.; Ertekin, T.; Smith, D.H.

2005-09-01T23:59:59.000Z

104

The economic feasibility of enhanced coalbed methane recovery using CO2 sequestration in the San Juan Basin  

E-Print Network [OSTI]

Carbon dioxide emissions are considered a major source of increased atmospheric CO2 levels leading towards global warming. CO2 sequestration in coal bed reservoirs is one technique that can reduce the concentration of CO2 in the air. In addition...

Agrawal, Angeni

2007-09-17T23:59:59.000Z

105

Capture and Sequestration of CO2 From Stationary Combustion Systems by Photosynthesis of Microalgae  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Capture and Sequestration of CO Capture and Sequestration of CO 2 From Stationary Combustion Systems by Photosynthesis of Microalgae Takashi Nakamura (nakamura@psicorp.com; 925-743-1110) Constance Senior (senior@psicorp.com; 978-689-0003) Physical Sciences Inc Andover, MA 01810 Miguel Olaizola (molaizola@aquasearch.com; 808-326-9301 Michael Cushman (mcushman@aquasearch.com; 808-326-9301) Aquasearch Inc. Kailua-Kona, HI 96740 Stephen Masutani (masutan@wiliki.eng.hawaii.edu; 808-956-7388) University of Hawaii Honolulu, HI 96822 Introduction Emissions of carbon dioxide are predicted to increase this century 1 leading to increases in the concentrations of carbon dioxide in the atmosphere. While there is still much debate on the effects of increased CO 2 levels on global climate, many scientists agree that the projected increases could have a

106

Electromagnetic Imaging of CO2 Sequestration at an Enhanced Oil Recovery Site  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Electromagnetic Imaging of CO Electromagnetic Imaging of CO 2 Sequestration at an Enhanced Oil Recovery Site Barry Kirkendall (Kirkendall1@llnl.gov ; 925-423-1513) Jeff Roberts (Roberts17@llnl.gov ; 925-422-7108) Lawrence Livermore National Laboratory 7000 East Avenue Livermore, CA 94550 1.1 Introduction Lawrence Livermore National Laboratory (LLNL) is currently involved in a long term study using time-lapse multiple frequency electromagnetic (EM) characterization at a waterflood enhanced oil recovery (EOR) site in California operated by Chevron Heavy Oil Division in Lost Hills, California (Figure 1). The petroleum industry's interest and the successful imaging results from this project suggest that this technique be extended to monitor CO 2 sequestration at an EOR site also operated by Chevron. The impetus for this study is

107

Feasibility of Large-Scale Ocean CO2 Sequestration  

SciTech Connect (OSTI)

Scientific knowledge of natural clathrate hydrates has grown enormously over the past decade, with spectacular new findings of large exposures of complex hydrates on the sea floor, the development of new tools for examining the solid phase in situ, significant progress in modeling natural hydrate systems, and the discovery of exotic hydrates associated with sea floor venting of liquid CO{sub 2}. Major unresolved questions remain about the role of hydrates in response to climate change today, and correlations between the hydrate reservoir of Earth and the stable isotopic evidence of massive hydrate dissociation in the geologic past. The examination of hydrates as a possible energy resource is proceeding apace for the subpermafrost accumulations in the Arctic, but serious questions remain about the viability of marine hydrates as an economic resource. New and energetic explorations by nations such as India and China are quickly uncovering large hydrate findings on their continental shelves. In this report we detail research carried out in the period October 1, 2007 through September 30, 2008. The primary body of work is contained in a formal publication attached as Appendix 1 to this report. In brief we have surveyed the recent literature with respect to the natural occurrence of clathrate hydrates (with a special emphasis on methane hydrates), the tools used to investigate them and their potential as a new source of natural gas for energy production.

Peter Brewer

2008-08-31T23:59:59.000Z

108

Multiphase Sequestration Geochemistry: Model for Mineral Carbonation...  

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for Mineral Carbonation. Abstract: Carbonation of formation minerals converts low viscosity supercritical CO2 injected into deep saline reservoirs for geologic sequestration...

109

Scientific Considerations Related to Regulation Development for CO2 Sequestration in Brine Formations  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

SCIENTIFIC CONSIDERATIONS RELATED TO REGULATION SCIENTIFIC CONSIDERATIONS RELATED TO REGULATION DEVELOPMENT FOR CO 2 SEQUESTRATION IN BRINE FORMATIONS Chin-Fu Tsang (cftsang@lbl.gov; (510) 486-5782) Sally M. Benson (smbenson@lbl.gov; (510) 486-7071) Earth Sciences Division, Ernest Orlando Lawrence Berkeley National Laboratory One Cyclotron Road, MS 90-1116, Berkeley, CA 94720 Bruce Kobelski (kobelski.bruce@epa.gov) Robert Smith (smith.robert-eu@epamail.epa.gov) U.S. Environmental Protection Agency Office of Drinking Water and Ground Water, Washington D.C. Introduction Reduction of atmospheric emissions of CO 2 (DOE, 1999a) through injection of CO 2 into in deep brine formations is being actively studied both in the U.S. and internationally. If this technology is to be employed broadly enough to make a significant impact on global

110

Co-Location of Air Capture, Subseafloor CO2 Sequestration, and Energy Production on the Kerguelen Plateau  

Science Journals Connector (OSTI)

Reducing atmospheric CO2 using a combination of air capture and offshore geological storage can address technical and policy concerns with climate mitigation. ... Our analysis suggests that Kerguelen offers a remote and environmentally secure location for CO2 sequestration using renewable energy. ...

David S. Goldberg; Klaus S. Lackner; Patrick Han; Angela L. Slagle; Tao Wang

2013-06-07T23:59:59.000Z

111

Direct Nanoscale Observations of CO2 Sequestration during Brucite [Mg(OH)2] Dissolution  

Science Journals Connector (OSTI)

Direct Nanoscale Observations of CO2 Sequestration during Brucite [Mg(OH)2] Dissolution ... The dissolution and carbonation of brucite on (001) cleavage surfaces was investigated in a series of in situ and ex situ atomic force microscopy (AFM) experiments at varying pH (2–12), temperature (23–40 °C), aqueous NaHCO3 concentration (10–5–1 M), and PCO2 (0–1 atm). ... Simultaneously with dissolution of brucite, the growth of a Mg–carbonate phase (probably dypingite) was directly observed. ...

J. Hövelmann; C. V. Putnis; E. Ruiz-Agudo; H. Austrheim

2012-04-13T23:59:59.000Z

112

Evaluation of Tracers for Use in the International Field Experiment on CO2 Ocean Sequestration  

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Tracers for Use in the International Field Experiment Tracers for Use in the International Field Experiment on CO 2 Ocean Sequestration E. Eric Adams (eeadams@mit.edu; 617-253-6595) Dept. of Civil and Environmental Engineering Massachusetts Institute of Technology Cambridge, MA 02139 USA Introduction An international field experiment is scheduled to take place off of the west coast of the big island of Hawaii during the second half of 2001 (Adams, et al., 1999; Herzog, et al., 2000). Scientists representing some dozen institutions in five countries on four continents are expected to participate. The experiment will involve several sub-experiments in which CO 2 will be released at a depth of 800 m as a buoyant liquid at rates of 0.1 to 1.0 kg/s. The releases will each be made for a duration of about one hour using nozzles with differing diameters and numbers of ports.

113

PASSIVE WIRELESS SURFACE ACOUSTIC WAVE SENSORS FOR MONITORING SEQUESTRATION SITES CO2 EMISSION  

SciTech Connect (OSTI)

University of Pittsburgh’s Transducer lab has teamed with the U.S. Department of Energy’s National Energy Technology Laboratory (DOE NETL) to conduct a comprehensive study to develop/evaluate low-cost, efficient CO2 measuring technologies for geological sequestration sites leakage monitoring. A passive wireless CO2 sensing system based on surface acoustic wave technology and carbon nanotube nanocomposite was developed. Surface acoustic wave device was studied to determine the optimum parameters. Delay line structure was adopted as basic sensor structure. CNT polymer nanocomposite was fabricated and tested under different temperature and strain condition for natural environment impact evaluation. Nanocomposite resistance increased for 5 times under pure strain, while the temperature dependence of resistance for CNT solely was -1375ppm/?. The overall effect of temperature on nanocomposite resistance was -1000ppm/?. The gas response of the nanocomposite was about 10% resistance increase under pure CO2. The sensor frequency change was around 300ppm for pure CO2. With paralyne packaging, the sensor frequency change from relative humidity of 0% to 100% at room temperature decreased from over 1000ppm to less than 100ppm. The lowest detection limit of the sensor is 1% gas concentration, with 36ppm frequency change. Wireless module was tested and showed over one foot transmission distance at preferred parallel orientation.

Wang, Yizhong; Chyu, Minking; Wang, Qing-Ming

2012-11-30T23:59:59.000Z

114

Small Scale Field Test Demonstrating CO2 sequestration in Arbuckle Saline Aquifer and by CO2-EOR at Wellington field, Sumner County, Kansas  

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Scale Field Test Demonstrating CO Scale Field Test Demonstrating CO 2 sequestration in Arbuckle Saline Aquifer and by CO 2 -EOR at Wellington field, Sumner County, Kansas -- W. Lynn Watney and Jason Rush Kansas Geological Survey Lawrence, KS 66047 Regional Carbon Sequestration Partnerships Annual Review Meeting October 15-17, 2011 Pittsburgh, PA Funding Opportunity Number: DE-FOA-0000441 Contract #FE0006821 $11,484,499 DOE $3.236 million cost share KANSAS STATE UNIVERSITY 12/2/2011 1 Outline * Background * The Participants * The Plan * Leveraging Current Research at Wellington Field * Inject, Monitor, Verification, and Accounting of CO 2 2 ORGANIZATION CHART Kansas Geological Survey Name Project Job Title Primary Responsibility Lynn Watney Project Leader, Joint Principal Investigator

115

Cost Comparison Among Concepts of Injection for CO2 Offshore Underground Sequestration Envisaged in Japan  

Science Journals Connector (OSTI)

Publisher Summary Japan is in the process of 5-year R&D program of underground storage of CO2, and this study was carried out as part of this program. Offshore saline aquifers are the target geological formation in this program because (1) most of large-scale emission sources of CO2 are located near the coast in Japan, (2) aquifers of large volume are expected to be found more in offshore than on land, and (3) site acquisition is much more costly on land. At present, the total time scheme of the sequestration process is assumed, which is based on practical results from similar processes such as large-scale underground storage of natural gas in aquifers. The total system of underground sequestration can be roughly divided into three processes: recovery, transportation, and injection. Although the methods of recovery and transportation have been well studied, the injection process has not been established as it is significantly affected by geographic, geological, and topographic features of the site. The cost of injection into an offshore aquifer varies with the method applied. One reason is that there are a variety of applicable designs and construction methods of wells and surface facilities (especially offshore) that depend on the conditions of injection site. The other reason is that there are many uncertainties in exploration and operation, as is the case with petroleum development. This chapter presents the results of the preliminary analysis on the costs of injection facilities.

Hironori Kotsubo; Takashi Ohsumi; Hitoshi Koide; Motoo Uno; Takeshi Ito; Toshio Kobayashi; Kozo Ishida

2003-01-01T23:59:59.000Z

116

Highlights of the 2009 SEG summer research workshop on"CO2 Sequestration Geophysics"  

SciTech Connect (OSTI)

The 2009 SEG Summer Research Workshop on CO2 Sequestration Geophysics was held August 23-27, 2009 in Banff, Canada. The event was attended by over 100 scientists from around the world, which proved to be a remarkably successful turnout in the midst of the current global financial crisis and severe corporate travel restrictions. Attendees included SEG President Larry Lines (U. Calgary), and CSEG President John Downton (CGG Veritas), who joined SRW Chairman David Lumley (UWA) in giving the opening welcome remarks at the Sunday Icebreaker. The workshop was organized by an expert technical committee (see side bar) representing a good mix of industry, academic, and government research organizations. The format consisted of four days of technical sessions with over 60 talks and posters, plus an optional pre-workshop field trip to the Columbia Ice Fields to view firsthand the effects of global warming on the Athabasca glacier (Figures 1-2). Group technical discussion was encouraged by requiring each presenter to limit themselves to 15 minutes of presentation followed by a 15 minute open discussion period. Technical contributions focused on the current and future role of geophysics in CO2 sequestration, highlighting new research and field-test results with regard to site selection and characterization, monitoring and surveillance, using a wide array of geophysical techniques. While there are too many excellent contributions to mention all individually here, in this paper we summarize some of the key workshop highlights in order to propagate new developments to the SEG community at large.

Lumley, D.; Sherlock, D.; Daley, T.; Huang, L.; Lawton, D.; Masters, R.; Verliac, M.; White, D.

2010-01-15T23:59:59.000Z

117

The impact of CO2 on shallow groundwater chemistry: observations at a natural analog site and implications for carbon sequestration  

SciTech Connect (OSTI)

In a natural analog study of risks associated with carbon sequestration, impacts of CO{sub 2} on shallow groundwater quality have been measured in a sandstone aquifer in New Mexico, USA. Despite relatively high levels of dissolved CO{sub 2}, originating from depth and producing geysering at one well, pH depression and consequent trace element mobility are relatively minor effects due to the buffering capacity of the aquifer. However, local contamination due to influx of saline waters in a subset of wells is significant. Geochemical modeling of major ion concentrations suggests that high alkalinity and carbonate mineral dissolution buffers pH changes due to CO{sub 2} influx. Analysis oftrends in dissolved trace elements, chloride, and CO2 reveal no evidence of in-situ trace element mobilization. There is clear evidence, however, that As, U, and Pb are locally co-transported into the aquifer with CO{sub 2}-rich saline water. This study illustrates the role that local geochemical conditions will play in determining the effectiveness of monitoring strategies for CO{sub 2} leakage. For example, if buffering is significant, pH monitoring may not effectively detect CO2 leakage. This study also highlights potential complications that CO{sub 2}carrier fluids, such as saline waters, pose in monitoring impacts ofgeologic sequestration.

Keating, Elizabeth [Los Alamos National Laboratory; Fessenden, Julianna [Los Alamos National Laboratory; Kanjorski, Nancy [NON LANL; Koning, Dan [NM BUREAU OF GEOLOGY AND MINERAL RESOURCES; Pawar, Rajesh [Los Alamos National Laboratory

2008-01-01T23:59:59.000Z

118

Enhanced CO2 Storage and Sequestration in Deep Saline Aquifers by Nanoparticles: Commingled Disposal of Depleted Uranium and CO2  

Science Journals Connector (OSTI)

Geological storage of anthropogenic CO2 emissions in deep saline aquifers has recently received tremendous attention in the scientific literature. Injected buoyant CO2 accumulates at the top part of the aquifer u...

Farzam Javadpour; Jean-Philippe Nicot

2011-09-01T23:59:59.000Z

119

CO2 Sequestration in Coalbed Methane Reservoirs: Experimental Studies and Computer Simulations  

SciTech Connect (OSTI)

One of the approaches suggested for sequestering CO{sub 2} is by injecting it in coalbed methane (CBM) reservoirs. Despite its potential importance for CO{sub 2} sequestration, to our knowledge, CO{sub 2} injection in CBM reservoirs for the purpose of sequestration has not been widely studied. Furthermore, a key element missing in most of the existing studies is the comprehensive characterization of the CBM reservoir structure. CBM reservoirs are complex porous media, since in addition to their primary pore structure, generated during coal formation, they also contain a variety of fractures, which may potentially play a key role in CO{sub 2} sequestration, as they generally provide high permeability flow paths for both CO{sub 2} and CH{sub 4}. In this report we present an overview of our ongoing experimental and modeling efforts, which aim to investigate the injection, adsorption and sequestration of CO{sub 2} in CBM reservoirs, the enhanced CH{sub 4} production that results, as well as the main factors that affect the overall operation. We describe the various experimental techniques that we utilize, and discuss their range of application and the value of the data generated. We conclude with a brief overview of our modeling efforts aiming to close the knowledge gap and fill the need in this area.

Muhammad Sahimi; Theodore T. Tsotsis

2002-12-15T23:59:59.000Z

120

Assessment of CO2 Sequestration and ECBM Potential of U.S. Coalbeds  

SciTech Connect (OSTI)

In October, 2000, the U.S. Department of Energy, through contractor Advanced Resources International, launched a multi-year government-industry R&D collaboration called the Coal-Seq project. The Coal-Seq project is investigating the feasibility of CO{sub 2} sequestration in deep, unmineable coalseams, by performing detailed reservoir studies of two enhanced coalbed methane recovery (ECBM) field projects in the San Juan basin. The two sites are the Allison Unit, operated by Burlington Resources, and into which CO{sub 2} is being injected, and the Tiffany Unit, operating by BP America, into which N{sub 2} is being injected (the interest in understanding the N{sub 2}-ECBM process has important implications for CO{sub 2} sequestration via flue-gas injection). The purposes of the field studies are to understand the reservoir mechanisms of CO{sub 2} and N{sub 2} injection into coalseams, demonstrate the practical effectiveness of the ECBM and sequestration processes, an engineering capability to simulate them, and to evaluate sequestration economics. In support of these efforts, laboratory and theoretical studies are also being performed to understand and model multi-component isotherm behavior, and coal permeability changes due to swelling with CO{sub 2} injection. This report describes the results of an important component of the overall project, applying the findings from the San Juan Basin to a national scale to develop a preliminary assessment of the CO{sub 2} sequestration and ECBM recovery potential of U.S. coalbeds. Importantly, this assessment improves upon previous investigations by (1) including a more comprehensive list of U.S. coal basins, (2) adopting technical rationale for setting upper-bound limits on the results, and (3) incorporating new information on CO{sub 2}/CH{sub 4} replacement ratios as a function of coal rank. Based on the results of the assessment, the following conclusions have been drawn: (1) The CO{sub 2} sequestration capacity of U.S. coalbeds is estimated to be about 90 Gt. Of this, about 38 Gt is in Alaska (even after accounting for high costs associated with this province), 14 Gt is in the Powder River basin, 10 Gt is in the San Juan basin, and 8 Gt is in the Greater Green River basin. By comparison, total CO{sub 2} emissions from power generation plants is currently about 2.2 Gt/year. (2) The ECBM recovery potential associated with this sequestration is estimated to be over 150 Tcf. Of this, 47 Tcf is in Alaska (even after accounting for high costs associated with this province), 20 Tcf is in the Powder River basin, 19 Tcf is in the Greater Green River basin, and 16 Tcf is in the San Juan basin. By comparison, total CBM recoverable resources are currently estimated to be about 170 Tcf. (3) Between 25 and 30 Gt of CO{sub 2} can be sequestered at a profit, and 80-85 Gt can be sequestered at costs of less than $5/ton. These estimates do not include any costs associated with CO{sub 2} capture and transportation, and only represent geologic sequestration. (4) Several Rocky Mountain basins, including the San Juan, Raton, Powder River and Uinta appear to hold the most favorable conditions for sequestration economics. The Gulf Coast and the Central Appalachian basin also appear to hold promise as economic sequestration targets, depending upon gas prices. (5) In general, the 'non-commercial' areas (those areas outside the main play area that are not expected to produce primary CBM commercially) appear more favorable for sequestration economics than the 'commercial' areas. This is because there is more in-place methane to recover in these settings (the 'commercial' areas having already been largely depleted of methane).

Scott R. Reeves

2003-03-31T23:59:59.000Z

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121

Investigation of novel geophysical techniques for monitoring CO2 movement during sequestration  

SciTech Connect (OSTI)

Cost effective monitoring of reservoir fluid movement during CO{sub 2} sequestration is a necessary part of a practical geologic sequestration strategy. Current petroleum industry seismic techniques are well developed for monitoring production in petroleum reservoirs. The cost of time-lapse seismic monitoring can be born because the cost to benefit ratio is small in the production of profit making hydrocarbon. However, the cost of seismic monitoring techniques is more difficult to justify in an environment of sequestration where the process produces no direct profit. For this reasons other geophysical techniques, which might provide sufficient monitoring resolution at a significantly lower cost, need to be considered. In order to evaluate alternative geophysical monitoring techniques we have undertaken a series of numerical simulations of CO{sub 2} sequestration scenarios. These scenarios have included existing projects (Sleipner in the North Sea), future planned projects (GeoSeq Liberty test in South Texas and Schrader Bluff in Alaska) as well as hypothetical models based on generic geologic settings potentially attractive for CO{sub 2} sequestration. In addition, we have done considerable work on geophysical monitoring of CO{sub 2} injection into existing oil and gas fields, including a model study of the Weyburn CO{sub 2} project in Canada and the Chevron Lost Hills CO{sub 2} pilot in Southern California (Hoversten et al. 2003). Although we are specifically interested in considering ''novel'' geophysical techniques for monitoring we have chosen to include more traditional seismic techniques as a bench mark so that any quantitative results derived for non-seismic techniques can be directly compared to the industry standard seismic results. This approach will put all of our finding for ''novel'' techniques in the context of the seismic method and allow a quantitative analysis of the cost/benefit ratios of the newly considered methods compared to the traditional, more expensive, seismic technique. The Schrader Bluff model was chosen as a numerical test bed for quantitative comparison of the spatial resolution of various geophysical techniques being considered for CO{sub 2} sequestration monitoring. We began with a three dimensional flow simulation model provided by BP Alaska of the reservoir and developed a detailed rock-properties model from log data that provides the link between the reservoir parameters (porosity, pressure, saturations, etc.) and the geophysical parameters (velocity, density, electrical resistivity). The rock properties model was used to produce geophysical models from the flow simulations.

Hoversten, G. Michael; Gasperikova, Erika

2003-10-31T23:59:59.000Z

122

Commerical-Scale CO2 Capture and Sequestration for the Cement Industry  

SciTech Connect (OSTI)

On June 8, 2009, DOE issued Funding Opportunity Announcement (FOA) Number DE-FOA-000015 seeking proposals to capture and sequester carbon dioxide from industrial sources. This FOA called for what was essentially a two-tier selection process. A number of projects would receive awards to conduct front-end engineering and design (FEED) studies as Phase I. Those project sponsors selected would be required to apply for Phase II, which would be the full design, construction, and operation of their proposed technology. Over forty proposals were received, and ten were awarded Phase I Cooperative Agreements. One of those proposers was CEMEX. CEMEX proposed to capture and sequester carbon dioxide (CO2) from one of their existing cement plants and either sequester the CO2 in a geologic formation or use it for enhanced oil recovery. The project consisted of evaluating their plants to identify the plant best suited for the demonstration, identify the best available capture technology, and prepare a design basis. The project also included evaluation of the storage or sequestration options in the vicinity of the selected plant.

Adolfo Garza

2010-07-28T23:59:59.000Z

123

Multipoint Pressure and Temperature Sensing Fiber Optic Cable for Monitoring CO2 Sequestration  

SciTech Connect (OSTI)

This report describes the work completed on contract DE-FE0010116. The goal of this two year project was to develop and demonstrate in the laboratory a highly accurate multi-point pressure measurement fiber optic cable based on MEMS pressure sensors suitable for downhole deployment in a CO2 sequestration well. The sensor interrogator was also to be demonstrated in a remote monitoring system and environmental testing was to be completed to indicate its downhole survivability over a lengthy period of time (e.g., 20 years). An interrogator system based on a pulsed laser excitation was shown to be capable of multiple (potentially 100+) simultaneous sensor measurements. Two sensors packages were completed and spliced in a cable onto the same fiber and measured. One sensor package was subsequently measured at high temperatures and pressures in supercritical CO2, while the other package was measured prior and after being subjected to high torque stresses to mimic downhole deployment. The environmental and stress tests indicated areas in which the package design should be further improved.

Challener, William

2014-12-31T23:59:59.000Z

124

Geologic carbon sequestration as a global strategy to mitigate CO2 emissions: Sustainability and environmental risk  

E-Print Network [OSTI]

and Co. (2008) Carbon capture and storage: Assessing theof Carbon Dioxide, in Carbon Capture and SequestrationWilson and Gerard, editors, Carbon Capture and Sequestration

Oldenburg, C.M.

2012-01-01T23:59:59.000Z

125

Using hyperspectral plant signatures for CO2 leak detection during the 2008 ZERT CO2 sequestration field experiment in Bozeman, Montana  

SciTech Connect (OSTI)

Hyperspectral plant signatures can be used as a short-term, as well as long-term (100-yr timescale) monitoring technique to verify that CO2 sequestration fields have not been compromised. An influx of CO2 gas into the soil can stress vegetation, which causes changes in the visible to nearinfrared reflectance spectral signature of the vegetation. For 29 days, beginning on July 9th, 2008, pure carbon dioxide gas was released through a 100-meter long horizontal injection well, at a flow rate of 300 kg/day. Spectral signatures were recorded almost daily from an unmown patch of plants over the injection with a ''FieldSpec Pro'' spectrometer by Analytical Spectral Devices, Inc. Measurements were taken both inside and outside of the CO2 leak zone to normalize observations for other environmental factors affecting the plants.

Male, E.J.; Pickles, W.L.; Silver, E.A.; Hoffmann, G.D.; Lewicki, J.; Apple, M.; Repasky, K.; Burton, E.A.

2009-11-01T23:59:59.000Z

126

Highlights of the 2009 SEG summer research workshop on "CO2 Sequestration Geophysics"  

E-Print Network [OSTI]

CO 2 saturation at the Weyburn CO 2 EOR injection project inMonitoring CO 2 storage during EOR at the Weyburn-Midalean excellent example of a CO 2 EOR (enhanced oil recovery)

Lumley, D.

2010-01-01T23:59:59.000Z

127

Developing a Mechanistic Understanding of Lamellar Hydroxide Mineral Carbonation Reaction Processes to Reduce CO2 Mineral Sequestration Process Cost  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Mechanistic Understanding of Lamellar Hydroxide Mechanistic Understanding of Lamellar Hydroxide Mineral Carbonation Reaction Processes to Reduce CO 2 Mineral Sequestration Process Cost Michael J. McKelvy (mckelvy@asu.edu; 480-965-4535), Andrew V. G. Chizmeshya (chizmesh@asu.edu; 480-965-6072), Hamdallah Bearat (Hamdallah.Bearat@asu.edu; 480-965-2624), Renu Sharma (Renu.Sharma@asu.edu; 480-965-4541), and Ray W. Carpenter (carpenter@asu.edu; 480-965-4549) Center for Solid State Science and Science and Engineering of Materials PhD Program, P.O. Box 871704, Arizona State University, Tempe, Arizona 85287 USA ABSTRACT The potential environmental effects of increasing atmospheric CO 2 levels are of major worldwide concern. One alternative for managing CO 2 emissions is carbon sequestration: the capture and secure confinement of CO

128

Leakage and Sepage of CO2 from Geologic Carbon SequestrationSites: CO2 Migration into Surface Water  

SciTech Connect (OSTI)

Geologic carbon sequestration is the capture of anthropogenic carbon dioxide (CO{sub 2}) and its storage in deep geologic formations. One of the concerns of geologic carbon sequestration is that injected CO{sub 2} may leak out of the intended storage formation, migrate to the near-surface environment, and seep out of the ground or into surface water. In this research, we investigate the process of CO{sub 2} leakage and seepage into saturated sediments and overlying surface water bodies such as rivers, lakes, wetlands, and continental shelf marine environments. Natural CO{sub 2} and CH{sub 4} fluxes are well studied and provide insight into the expected transport mechanisms and fate of seepage fluxes of similar magnitude. Also, natural CO{sub 2} and CH{sub 4} fluxes are pervasive in surface water environments at levels that may mask low-level carbon sequestration leakage and seepage. Extreme examples are the well known volcanic lakes in Cameroon where lake water supersaturated with respect to CO{sub 2} overturned and degassed with lethal effects. Standard bubble formation and hydrostatics are applicable to CO{sub 2} bubbles in surface water. Bubble-rise velocity in surface water is a function of bubble size and reaches a maximum of approximately 30 cm s{sup -1} at a bubble radius of 0.7 mm. Bubble rise in saturated porous media below surface water is affected by surface tension and buoyancy forces, along with the solid matrix pore structure. For medium and fine grain sizes, surface tension forces dominate and gas transport tends to occur as channel flow rather than bubble flow. For coarse porous media such as gravels and coarse sand, buoyancy dominates and the maximum bubble rise velocity is predicted to be approximately 18 cm s{sup -1}. Liquid CO{sub 2} bubbles rise slower in water than gaseous CO{sub 2} bubbles due to the smaller density contrast. A comparison of ebullition (i.e., bubble formation) and resulting bubble flow versus dispersive gas transport for CO{sub 2} and CH{sub 4} at three different seepage rates reveals that ebullition and bubble flow will be the dominant form of gas transport in surface water for all but the smallest seepage fluxes or shallowest water bodies. The solubility of the gas species in water plays a fundamental role in whether ebullition occurs. We used a solubility model to examine CO{sub 2} solubility in waters with varying salinity as a function of depth below a 200 m-deep surface water body. In this system, liquid CO{sub 2} is stable between the deep regions where supercritical CO{sub 2} is stable and the shallow regions where gaseous CO{sub 2} is stable. The transition from liquid to gaseous CO{sub 2} is associated with a large change in density, with corresponding large change in bubble buoyancy. The solubility of CO{sub 2} is lower in high-salinity waters such as might be encountered in the deep subsurface. Therefore, as CO{sub 2} migrates upward through the deep subsurface, it will likely encounter less saline water with increasing capacity to dissolve CO{sub 2} potentially preventing ebullition, depending on the CO{sub 2} leakage flux. However, as CO{sub 2} continues to move upward through shallower depths, CO{sub 2} solubility in water decreases strongly leading to greater likelihood of ebullition and bubble flow in surface water. In the case of deep density-stratified lakes in which ebullition is suppressed, enhanced mixing and man-made degassing schemes can alleviate the buildup of CO{sub 2} and related risk of dangerous rapid discharges. Future research efforts are needed to increase understanding of CO{sub 2} leakage and seepage in surface water and saturated porous media. For example, we recommend experiments and field tests of CO{sub 2} migration in saturated systems to formulate bubble-driven water-displacement models and relative permeability functions that can be used in simulation models.

Oldenburg, Curt M.; Lewicki, Jennifer L.

2005-06-17T23:59:59.000Z

129

TheU-Tube: A Novel System for Acquiring Borehole Fluid Samplesfrom a Deep Geologic CO2 Sequestration Experiment  

SciTech Connect (OSTI)

A novel system has been deployed to obtain geochemical samples of water and gas, at in situ pressure, during a geologic CO2 sequestration experiment conducted in the Frio brine aquifer in Liberty County, Texas. Project goals required high-frequency recovery of representative and uncontaminated aliquots of a rapidly changing two-phase (supercritical CO2-brine) fluid from 1.5 km depth. The datasets collected, using both the liquid and gas portions of the downhole samples, provide insights into the coupled hydro-geochemical issues affecting CO2 sequestration in brine-filled formations. While the basic premise underlying the U-Tube sampler is not new, the system is unique because careful consideration was given to the processing of the recovered two-phase fluids. In particular, strain gauges mounted beneath the high-pressure surface sample cylinders measured the ratio of recovered brine to supercritical CO2. A quadrupole mass spectrometer provided real-time gas analysis for perfluorocarbon and noble gas tracers that were injected along with the CO2. The U-Tube successfully acquired frequent samples, facilitating accurate delineation of the arrival of the CO2 plume, and on-site analysis revealed rapid changes in geochemical conditions.

Freifeld, Barry M.; Trautz, Robert C.; Kharaka, Yousif K.; Phelps, Tommy J.; Myer, Larry R.; Hovorka, Susan D.; Collins, Daniel J.

2005-03-17T23:59:59.000Z

130

Workshop on Carbon Sequestration Science - Modeling and Integrated Assessment  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Modeling and Integrated Modeling and Integrated Assessment Howard Herzog MIT Energy Laboratory May 24, 2001 Economic Assessments * Engineering analysis of CO 2 separation and capture * Economic modeling/ integrated assessment of carbon capture and sequestration * Comparison on equal basis of the major sequestration options Economic Modeling Motivation * When might carbon capture and sequestration (CCS) become competitive? * What is its potential scale? * Which technologies look most promising? . . . . And when? * How to see the potential in a general market context? Detailed Reference *Sean Biggs Thesis: S Biggs, S. D., "Sequestering Carbon from Power Plants: The Jury is Still Out," M.I.T. Masters Thesis, (2000). S http://sequestration.mit.edu/pdf/SeanBiggs.pdf What Determines Competitiveness?

131

Carbon Dioxide Transport and Sorption Behavior in Confined Coal Cores for Enhanced Coalbed Methane and CO2 Sequestration  

SciTech Connect (OSTI)

Measurements of sorption isotherms and transport properties of CO2 in coal cores are important for designing enhanced coalbed methane/CO2 sequestration field projects. Sorption isotherms measured in the lab can provide the upper limit on the amount of CO2 that might be sorbed in these projects. Because sequestration sites will most likely be in unmineable coals, many of the coals will be deep and under considerable lithostatic and hydrostatic pressures. These lithostatic pressures may significantly reduce the sorption capacities and/or transport rates. Consequently, we have studied apparent sorption and diffusion in a coal core under confining pressure. A core from the important bituminous coal Pittsburgh #8 was kept under a constant, three-dimensional external stress; the sample was scanned by X-ray computer tomography (CT) before, then while it sorbed, CO2. Increases in sample density due to sorption were calculated from the CT images. Moreover, density distributions for small volume elements inside the core were calculated and analyzed. Qualitatively, the computerized tomography showed that gas sorption advanced at different rates in different regions of the core, and that diffusion and sorption progressed slowly. The amounts of CO2 sorbed were plotted vs. position (at fixed times) and vs. time (for various locations in the sample). The resulting sorption isotherms were compared to isotherms obtained from powdered coal from the same Pittsburgh #8 extended sample. The results showed that for this single coal at specified times, the apparent sorption isotherms were dependent on position of the volume element in the core and the distance from the CO2 source. Also, the calculated isotherms showed that less CO2 was sorbed than by a powdered (and unconfined) sample of the coal. Changes in density distributions during the experiment were also observed. After desorption, the density distribution of calculated volume elements differed from the initial distribution, suggesting hysteresis and a possible rearrangement of coal structure due to CO2 sorption.

Jikich, S.A.; McLendon, T.R.; Seshadri, K.S.; Irdi, G.A.; Smith, D.H.

2007-11-01T23:59:59.000Z

132

An Integrated Framework for Optimizing CO2 Sequestration and Enhanced Oil Recovery  

Science Journals Connector (OSTI)

CO2-EOR uses water-alternating-with-gas (WAG) cycles to control CO2 mobility and CO2 flood conformance and to tackle the clogging and scale issues in the depleted reservoir. ... The Morrow formation predominantly consists of incised valley-fill sandstones of the Lower Pennsylvanian that extend from Texas to Colorado. ... Grigg, R. B.; Schechter, D. S. Improved Efficiency of Miscible CO2 Floods and Enhanced Prospects for CO2 Flooding Heterogeneous Reservoirs, Final report 1997; New Mexico Petroleum Recovery Research Center, New Mexico Institute of Mining and Technology: Socorro, NM, 1997; DOE/BC/14977-13. ...

Zhenxue Dai; Richard Middleton; Hari Viswanathan; Julianna Fessenden-Rahn; Jacob Bauman; Rajesh Pawar; Si-Yong Lee; Brian McPherson

2013-11-04T23:59:59.000Z

133

Comparison of three options for geologic sequestration of CO2 - a case study for California  

SciTech Connect (OSTI)

Options for sequestration of CO{sub 2} are best viewed in light of the regional distribution of CO{sub 2} sources and potential sequestration sites. This study examines the distribution of carbon emissions from fossil fuel power plants in California and their proximity to three types of reservoirs that may be suitable for sequestration: (1) active or depleted oil fields, (2) active or depleted gas fields, and (3) brine formations. This paper also presents a preliminary assessment of the feasibility of sequestering CO{sub 2} generated from large fossil-fuel fired power plants in California and discusses the comparative advantages of three different types of reservoirs for this purpose. Based on a volumetric analysis of sequestration capacity and current CO{sub 2} emission rates from oil/gas fired power plants, this analysis suggests that oil reservoirs, gas fields and brine formations can all contribute significantly to sequestration in California. Together they could offer the opportunity to meet both short and long term needs. In the near term, oil and gas reservoirs are the most promising because the trapping structures have already stood the test of time and opportunities for offsetting the cost of sequestration with revenues from enhanced oil and gas production. In the long term, if the trapping mechanisms are adequately understood and deemed adequate, brine formations may provide an even larger capacity for geologic sequestration over much of California.

Benson, S.M.

2000-09-01T23:59:59.000Z

134

CO2 Sequestration in Unmineable Coal with Enhanced Coal Bed Methane Recovery DE-FC26-01NT41148  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

1, 2013 1, 2013 James E. Locke & Richard A. Winschel CONSOL Energy Inc. U.S. Department of Energy National Energy Technology Laboratory Carbon Storage R&D Project Review Meeting Developing the Technologies and Infrastructure for CCS Presentation Outline  Benefit to the program  Project overview  Technical status  Accomplishments  Summary  Appendix 2 Benefit to the Program This project will demonstrate the effectiveness and the economics of carbon sequestration in an unmineable coal seam with enhanced coal bed methane (ECBM) production. 3 Project Overview: Goals and Objectives  Demonstrate horizontal drilling in underground coal seams,  Devise economical drilling strategies to maximize both CO 2 sequestration potential and CBM recovery,

135

Hydrological and geochemical monitoring for a CO2 sequestration pilot in a brine formation  

SciTech Connect (OSTI)

Hydrological and geochemical monitoring are key components of site characterization and CO2 plume monitoring for a pilot test to inject CO2 into a brine-bearing sand of the fluvial-deltaic Frio formation in the upper Texas Gulf Coast. In situ, injected CO2 forms a supercritical phase that has gas-like properties (low density and viscosity) compared to the surrounding brine, while some CO2 dissolves in the brine. The pilot test employs one injection well and one monitor well, with continuous pressure and flow-rate monitoring in both wells, and continuous surface fluid sampling and periodic down-hole fluid sampling from the monitor well. Pre-injection site-characterization includes pump tests with pressure-transient analysis to estimate single-phase flow properties, establish hydraulic connectivity between the wells, determine appropriate boundary conditions, and analyze ambient phase conditions within the formation. Additionally, a pre-injection tracer test furnishes estimates of kinematic porosity and the geometry of flow paths between injection and monitor wells under single-phase conditions. Pre-injection geochemical sampling provides a baseline for subsequent geochemical monitoring and helps determine the optimal tracers to accompany CO2 injection. During CO2 injection, hydrological monitoring enables estimation of two-phase flow properties and helps track the movement of the injected CO2 plume, while geochemical sampling provides direct evidence of the arrival of CO2 and tracers at the monitor well. Furthermore, CO2-charged water acts as a weak acid, and reacts to some extent with the minerals in the aquifer, producing a distinct chemical signature in the water collected at the monitor well. Comparison of breakthrough curves for the single-phase tracer test and the CO2 (and its accompanying tracers) illuminates two-phase flow processes between the supercritical CO2 and native brine, an area of current uncertainty that must be better understood to effectively sequester CO2 in saline aquifers.

Doughty, Christine; Pruess, Karsten; Benson, Sally M.; Freifeld, Barry M.; Gunter, William D.

2004-05-17T23:59:59.000Z

136

Comparative assessment of sub-critical versus advanced super-critical oxyfuel fired PF boilers with CO2 sequestration facilities  

Science Journals Connector (OSTI)

This work focuses on the techno-economic assessment of bituminous coal fired sub- and super-critical pulverised fuel boilers from an oxyfuel based CO2 capture point of view. At the initial stage, two conventional power plants with a nominal power output of above 600 MWe based on the above steam cycles are designed, simulated and optimised. Built upon these technologies, CO2 capture facilities are incorporated within the base plants resulting in a nominal power output of 500 MWe. In this manner, some sensible heat generated in the air separation unit and the CO2 capture train can be redirected to the steam cycle resulting in a higher plant efficiency. The simulation results of conventional sub- and super-critical plants are compared with their CO2 capture counterparts to disclose the effect of sequestration on the overall system performance attributes. This systematic approach allows the investigation of the effects of the CO2 capture on both cycles. In the literature, super-critical plants are often considered for a CO2 capture option. These, however, are not based on a systematic evaluation of these technologies and concentrate mainly on one or two key features. In this work several techno-economic plant attributes such as the fuel consumptions, the utility usages, the plant performance parameters as well as the specific CO2 generation and capture rates are calculated and weighed against each other. Finally, an economic evaluation of the system is conducted along with sensitivity analyses in connection with some key features such as discounted cash flow rates, capital investments and plant efficiencies as well as fuel and operating costs.

Sina Rezvani; Ye Huang; David McIlveen-Wright; Neil Hewitt; Yaodong Wang

2007-01-01T23:59:59.000Z

137

Highlights of the 2009 SEG summer research workshop on "CO2 Sequestration Geophysics"  

E-Print Network [OSTI]

industrial applications, the CO 2 generated cannot easily be reduced by energy conservation or efficiency measures (for example LNG – liquid natural gas –

Lumley, D.

2010-01-01T23:59:59.000Z

138

ECONOMIC EVALUATION OF CO2 SEQUESTRATION TECHNOLOGIES TASK 4, BIOMASS GASIFICATION-BASED PROCESSING  

SciTech Connect (OSTI)

Biomass derived energy currently accounts for about 3 quads of total primary energy use in the United States. Of this amount, about 0.8 quads are used for power generation. Several biomass energy production technologies exist today which contribute to this energy mix. Biomass combustion technologies have been the dominant source of biomass energy production, both historically and during the past two decades of expansion of modern biomass energy in the U. S. and Europe. As a research and development activity, biomass gasification has usually been the major emphasis as a method of more efficiently utilizing the energy potential of biomass, particularly wood. Numerous biomass gasification technologies exist today in various stages of development. Some are simple systems, while others employ a high degree of integration for maximum energy utilization. The purpose of this study is to conduct a technical and economic comparison of up to three biomass gasification technologies, including the carbon dioxide emissions reduction potential of each. To accomplish this, a literature search was first conducted to determine which technologies were most promising based on a specific set of criteria. The technical and economic performances of the selected processes were evaluated using computer models and available literature. Using these results, the carbon sequestration potential of the three technologies was then evaluated. The results of these evaluations are given in this final report.

Martha L. Rollins; Les Reardon; David Nichols; Patrick Lee; Millicent Moore; Mike Crim; Robert Luttrell; Evan Hughes

2002-06-01T23:59:59.000Z

139

Capacity Investigation of Brine-Bearing Sands of the Frio Formation for Geologic Sequestration of CO2  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Capacity Investigation of Brine-Bearing Sands of the Frio Capacity Investigation of Brine-Bearing Sands of the Frio Formation for Geologic Sequestration of CO 2 Christine Doughty (cadoughty@lbl.gov; 510-486-6453) Karsten Pruess (k_pruess@lbl.gov; 510-486-6732) Sally M. Benson (smbenson@lbl.gov; 510-486-5875) Lawrence Berkeley National Laboratory 1 Cyclotron Rd, MS 90-1116 Berkeley, CA 94720 Susan D. Hovorka (susan.hovorka@beg.utexas.edu; 512-471-4863) Paul R. Knox (paul.knox@beg.utexas.edu; 512-471-7313) Bureau of Economic Geology P.O. Box X, The University of Texas Austin, TX 78713 Christopher T. Green (ctgreen@ucdavis.edu; 530-752-1372) University of California, Hydrologic Sciences 1 Shields Ave. Davis, CA 95616 Abstract The capacity of fluvial brine-bearing formations to sequester CO 2 is investigated using numerical simulations of CO

140

Experimental Determination of Ca-Silicate Dissolution Rates: A Source of Calcium for Geologic CO2 Sequestration  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Experimental Determination of Ca-Silicate Dissolution Rates: Experimental Determination of Ca-Silicate Dissolution Rates: A Source of Calcium for Geologic CO 2 Sequestration Susan A. Carroll (carroll6@llnl.gov; 925-423-5694) Energy and Environment Directorate Lawrence Livermore National Laboratory L-219 Livermore, CA 94550 Kevin G. Knauss (knauss@llnl.gov; 925-422-1372) Energy and Environment Directorate Lawrence Livermore National Laboratory L-219 Livermore, CA 94550 2 Introduction The international scientific community recognizes that greenhouse gases have the potential to influence climate, and that potential changes in sea level and weather patterns would be largely deleterious. Because CO 2 is emitted in such large quantities and its atmospheric concentration has been consistently rising throughout the recent past, it is only prudent to focus attention on reducing

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141

Geological Sequestration of CO2 by Hydrous Carbonate Formation with Reclaimed Slag  

SciTech Connect (OSTI)

The concept of this project is to develop a process that improves the kinetics of the hydrous carbonate formation reaction enabling steelmakers to directly remove CO2 from their furnace exhaust gas. It is proposed to bring the furnace exhaust stream containing CO2 in contact with reclaimed steelmaking slag in a reactor that has an environment near the unit activity of water resulting in the production of carbonates. The CO2 emissions from the plant would be reduced by the amount sequestered in the formation of carbonates. The main raw materials for the process are furnace exhaust gases and specially prepared slag.

Von L. Richards; Kent Peaslee; Jeffrey Smith

2008-02-06T23:59:59.000Z

142

CO2 CAPTURE PROJECT - AN INTEGRATED, COLLABORATIVE TECHNOLOGY DEVELOPMENT PROJECT FOR NEXT GENERATION CO2 SEPARATION, CAPTURE AND GEOLOGIC SEQUESTRATION  

SciTech Connect (OSTI)

The CO{sub 2} Capture Project (CCP) is a joint industry project, funded by eight energy companies (BP, ChevronTexaco, EnCana, Eni, Norsk Hydro, Shell, Statoil, and Suncor) and three government agencies (1) European Union (DG Res & DG Tren), (2) Norway (Klimatek) and (3) the U.S.A. (Department of Energy). The project objective is to develop new technologies, which could reduce the cost of CO{sub 2} capture and geologic storage by 50% for retrofit to existing plants and 75% for new-build plants. Technologies are to be developed to ''proof of concept'' stage by the end of 2003. The project budget is approximately $24 million over 3 years and the work program is divided into eight major activity areas: (1) Baseline Design and Cost Estimation--defined the uncontrolled emissions from each facility and estimate the cost of abatement in $/tonne CO{sub 2}. (2) Capture Technology, Post Combustion: technologies, which can remove CO{sub 2} from exhaust gases after combustion. (3) Capture Technology, Oxyfuel: where oxygen is separated from the air and then burned with hydrocarbons to produce an exhaust with high CO{sub 2} for storage. (4) Capture Technology, Pre -Combustion: in which, natural gas and petroleum coke are converted to hydrogen and CO{sub 2} in a reformer/gasifier. (5) Common Economic Model/Technology Screening: analysis and evaluation of each technology applied to the scenarios to provide meaningful and consistent comparison. (6) New Technology Cost Estimation: on a consistent basis with the baseline above, to demonstrate cost reductions. (7) Geologic Storage, Monitoring and Verification (SMV): providing assurance that CO{sub 2} can be safely stored in geologic formations over the long term. (8) Non-Technical: project management, communication of results and a review of current policies and incentives governing CO{sub 2} capture and storage. Technology development work dominated the past six months of the project. Numerous studies are making substantial progress towards their goals. Some technologies are emerging as preferred over others. Pre-combustion Decarbonization (hydrogen fuel) technologies are showing good progress and may be able to meet the CCP's aggressive cost reduction targets for new-build plants. Chemical looping to produce oxygen for oxyfuel combustion shows real promise. As expected, post-combustion technologies are emerging as higher cost options that may have niche roles. Storage, measurement, and verification studies are moving rapidly forward. Hyper-spectral geo-botanical measurements may be an inexpensive and non-intrusive method for long-term monitoring. Modeling studies suggest that primary leakage routes from CO{sub 2} storage sites may be along wellbores in areas disturbed by earlier oil and gas operations. This is good news because old wells are usually mapped and can be repaired during the site preparation process. Many studies are nearing completion or have been completed. Their preliminary results are summarized in the attached report and presented in detail in the attached appendices.

Dr. Helen Kerr

2003-08-01T23:59:59.000Z

143

CO2 Sequestration in Chrysotile Mining ResiduesImplication of Watering and Passivation under Environmental Conditions  

E-Print Network [OSTI]

carbonation reactors for the capture of CO2 produced at its source.5-8 In most available direct carbonation was found to develop very rapidly in comparison to silica gel polymerization. INTRODUCTION The fixation

144

Simulation study of CO2 sequestration potential of the Mary Lee coal zone, Black Warrior basin  

Science Journals Connector (OSTI)

As stated by Ross et al. (2009), CBM reservoirs produce more water in ECBM compared to primary CBM production because the injected CO2 gas displaces a significant portion of the water within the cleats that is le...

Ashkan Bahrami; Mohammad Jamialahmadi; Jamshid Moghadasi…

2013-11-01T23:59:59.000Z

145

Reactivity of iron-bearing minerals and CO2 sequestration: A multi-disciplinary experimental approach  

SciTech Connect (OSTI)

The reactivity of sandstones was studied under conditions relevant to the injection of supercritical carbon dioxide in the context of carbon geosequestration. The emphasis of the study was on the reactivity of iron-bearing minerals when exposed to supercritical CO2 (scCO2) and scCO2 with commingled aqueous solutions containing H2S and/or SO2. Flow through and batch experiments were conducted. Results indicate that sandstones, irrespective of their mineralogy, are not reactive when exposed to pure scCO2 or scCO2 with commingled aqueous solutions containing H2S and/or SO2 under conditions simulating the environment near the injection point (flow through experiments). However, sandstones are reactive under conditions simulating the edge of the injected CO2 plume or ahead of the plume (batch experiments). Sandstones containing hematite (red sandstone) are particularly reactive. The composition of the reaction products is strongly dependent on the composition of the aqueous phase. The presence of dissolved sulfide leads to the conversion of hematite into pyrite and siderite. The relative amount of the pyrite and siderite is influenced by the ionic strength of the solution. Little reactivity is observed when sulfite is present in the aqueous phase. Sandstones without hematite (grey sandstones) show little reactivity regardless of the solution composition.

Schoonen, Martin A. [Stony Brook University] (ORCID:0000000271331160)

2014-12-22T23:59:59.000Z

146

Fracture characterization and fluid flow simulation with geomechanical constraints for a CO2–EOR and sequestration project Teapot Dome Oil Field, Wyoming, USA  

Science Journals Connector (OSTI)

Mature oil and gas reservoirs are attractive targets for geological sequestration of CO2 because of their potential storage capacities and the possible cost offsets from enhanced oil recovery (EOR). In this work, we analyze the fracture system of the Tensleep Formation to develop a geomechanically-constrained 3D reservoir fluid flow simulation at Teapot Dome Oil Field, WY, USA. Teapot Dome is the site of a proposed CO2-EOR and sequestration pilot project. The objective of this work is to model the migration of the injected CO2 in the fracture reservoir, as well as to obtain limits on the rates and volumes of CO2 that can be injected, without compromising seal integrity. Furthermore we want to establish the framework to design injection experiments that will provide insight into the fracture network of the reservoir, in particular of fracture permeability and connectivity. Teapot Dome is an elongated asymmetrical, basement-cored anticline with a north-northeast axis. The Tensleep Fm. in this area is highly fractured, and consists of an intercalation of eolian-dune sandstones and inter-dune deposits. The dune sandstones are permeable and porous intervals with different levels of cementation that affects their porosity, permeability, and fracture intensity. The inter-dune deposits consist of thin sabkha carbonates, minor evaporates, and thin but widespread extensive beds of very low-permeability dolomicrites. The average permeability is 30 mD, ranging from 10–100 mD. The average reservoir thickness is 50 ft. The caprock for the Tensleep Fm. consists of the Opeche Shale member, and the anhydrite of the Minnekhata member. The reservoir has strong aquifer drive. In the area under study, the Tensleep Fm. has its structural crest at 1675 m. It presents a 2-way closure trap against a NE-SW fault to the north and possibly the main thrust to the west. The CO2-EOR and sequestration project will consist of the injection of 1 million cubic feet of supercritical CO2 for six weeks. A previous geomechanical analysis suggested that the trapping faults do not appear to be at risk of reactivation and it was estimated that caprock integrity is not a risk by the buoyancy pressure of the maximum CO2 column height that the formation can hold. However, in the present study we established the presence of critically stressed minor faults and fractures in the reservoir and caprock, which if reactivated, could not only enhance the permeability of the reservoir, but potentially compromise the top seal capacity. The results of the preliminary fluid flow simulations indicate that the injected CO2 will rapidly rise to the top layers, above the main producing interval, and will accumulate in the fractures, where almost none will get into the matrix.

Laura Chiaramonte; Mark Zoback; Julio Friedmann; Vicki Stamp; Chris Zahm

2011-01-01T23:59:59.000Z

147

Carbon Sequestration  

Science Journals Connector (OSTI)

“Carbon sequestration” refers to a portfolio of activities for ... capture, separation and storage or reuse of carbon or CO2. Carbon sequestration technologies encompass both the prevention of CO2 emissions into ...

Robert L. Kane MS; Daniel E. Klein MBA

2005-01-01T23:59:59.000Z

148

Reservoir simulation of co2 sequestration and enhanced oil recovery in Tensleep Formation, Teapot Dome field  

E-Print Network [OSTI]

Teapot Dome field is located 35 miles north of Casper, Wyoming in Natrona County. This field has been selected by the U.S. Department of Energy to implement a field-size CO2 storage project. With a projected storage of 2.6 million tons of carbon...

Gaviria Garcia, Ricardo

2006-04-12T23:59:59.000Z

149

Influence of surface passivation and water content on mineral reactions in unsaturated porous media: Implications for brucite carbonation and CO2 sequestration  

Science Journals Connector (OSTI)

Abstract The evolution of mineral reactive surface area is an important control on the progress of carbon mineralization reactions that sequester anthropogenic CO2. Dry conditions in unsaturated porous media and the passivation of reactive surface area by secondary phase precipitation complicate predictions of reactive surface during carbon mineralization reactions. Unsaturated brucite [Mg(OH)2] bearing column experiments were used to evaluate the effects of water saturation and hydrous Mg-carbonate precipitation on reaction of brucite with 10% CO2 gas streams at ambient conditions. We demonstrate that a lack of available water severely limits reaction progress largely due to the requirement of water as a reactant to form hydrated Mg-carbonates. The precipitation of a poorly crystalline carbonate phase in the early stages of the reaction does not significantly hinder brucite dissolution, as the carbonate coating remains sufficiently permeable. It is postulated that the conversion of this phase to substantially less porous, crystalline nesquehonite [MgCO3·3H2O] results in passivation of the brucite surface. Although a mechanistic model describing the passivating effect of nesquehonite remains elusive, reactive transport modeling using MIN3P-DUSTY confirms that conventional geometric surface area update models do not adequately reproduce observed reaction progress during brucite carbonation, while an empirically based model accounting for surface passivation is able to capture the transient evolution of CO2 uptake. Both water limits and surface passivation effects may limit the efficiency of CO2 sequestration efforts that rely on the conversion of mafic and ultramafic rock to carbonate minerals.

Anna L. Harrison; Gregory M. Dipple; Ian M. Power; K. Ulrich Mayer

2015-01-01T23:59:59.000Z

150

ENHANCED COAL BED METHANE PRODUCTION AND SEQUESTRATION OF CO2 IN UNMINEABLE COAL SEAMS  

SciTech Connect (OSTI)

The availability of clean, affordable energy is essential for the prosperity and security of the United States and the world in the 21st century. Emissions of carbon dioxide (CO{sub 2}) into the atmosphere are an inherent part of electricity generation, transportation, and industrial processes that rely on fossil fuels. These energy-related activities are responsible for more than 80 percent of the U.S. greenhouse gas emissions, and most of these emissions are CO{sub 2}. Over the last few decades, an increased concentration of CO{sub 2} in the earth's atmosphere has been observed. Carbon sequestration technology offers an approach to redirect CO{sub 2} emissions into sinks (e.g., geologic formations, oceans, soils and vegetation) and potentially stabilize future atmospheric CO{sub 2} levels. Coal seams are attractive CO{sub 2} sequestration sinks, due to their abundance and proximity to electricity-generation facilities. The recovery of marketable coalbed methane (CBM) provides a value-added stream, potentially reducing the cost to sequester CO{sub 2} gas. Much research is needed to evaluate this technology in terms of CO{sub 2} storage capacity, sequestration stability, commercial feasibility and overall economics. CONSOL Energy Inc., Research & Development (CONSOL), with support from the US DOE, has embarked on a seven-year program to construct and operate a coal bed sequestration site composed of a series of horizontally drilled wells that originate at the surface and extend through two overlying coal seams. Once completed, all of the wells will be used initially to drain CBM from both the upper (mineable) and lower (unmineable) coal seams. After sufficient depletion of the reservoir, centrally located wells in the lower coal seam will be converted from CBM drainage wells to CO{sub 2} injection ports. CO{sub 2} will be measured and injected into the lower unmineable coal seam while CBM continues to drain from both seams. In addition to metering all injected CO{sub 2} and recovered CBM, the program includes additional monitoring wells to further examine horizontal and vertical migration of CO{sub 2}. This is the fifth Technical Progress report for the project. Progress this period was focused on reclamation of the north access road and north well site, and development of revised drilling methods. This report provides a concise overview of project activities this period and plans for future work.

William A. Williams

2004-03-01T23:59:59.000Z

151

Formation of Hydrates from Single-Phase Aqueous Solutions and Implications for Oceanic Sequestration of CO2  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Formation of Hydrates from Single-Phase Aqueous Solutions Formation of Hydrates from Single-Phase Aqueous Solutions and Implications for Oceanic Sequestration of CO 2 . G. Holder (holder@engrng.pitt.edu) 412-624-9809 L. Mokka (lakshmi.mokka@netl.doe.gov) 412-386-6019 Department of Chemical and Petroleum Engineering University of Pittsburgh Pittsburgh, PA 15261 R. Warzinski* (robert.warzinski@netl.doe.gov) 412-386-5863 U.S. Department of Energy National Energy Technology Laboratory P.O. Box 10940 Pittsburgh, PA 15236-0940 Introduction a Gas hydrates are crystalline solids formed from mixtures of water and low molecular weight compounds, referred to as hydrate formers, that typically are gases at ambient conditions (1). Generally, hydrates are formed in the laboratory from two-phase systems by contacting a hydrate former or formers in the gas or liquid phase with liquid water and increasing the pressure until

152

Evaluation of Brine-Bearing Sands of the Frio Formation, Upper Texas Gulf Coast for Geological Sequestration of CO2  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Evaluation of Brine-Bearing Sands of the Evaluation of Brine-Bearing Sands of the Frio Formation, Upper Texas Gulf Coast for Geological Sequestration of CO 2 S. D. Hovorka (susan.hovorka@beg.utexas.edu; 512-471-4863) Bureau of Economic Geology, P.O. Box X, The University of Texas at Austin, Austin, TX 78713 C. Doughty (CADoughty@lbl.gov; 510-486-6453 ) Lawrence Berkeley National Lab, 1 Cyclotron Road Mailstop 90-1116, Berkeley, CA 94720 P. R. Knox (paul.knox@beg.utexas.edu; 512-471-7313), Bureau of Economic Geology, P.O. Box X, The University of Texas at Austin, Austin, TX 78713 C. T. Green (ctgreen@ucdavis.edu; 510-495-2461) University of California, Hydrologic Sciences, One Shields Ave., Davis, CA 95616 K. Pruess(K_Pruess@lbl.gov; 510-486-6732) Lawrence Berkeley National Lab, 1 Cyclotron Road Mailstop 90-1116,

153

RECOVERY AND SEQUESTRATION OF CO2 FROM STATIONARY COMBUSTION SYSTEMS BY PHOTOSYNTHESIS OF MICROALGAE  

SciTech Connect (OSTI)

Most of the anthropogenic emissions of carbon dioxide result from the combustion of fossil fuels for energy production. Photosynthesis has long been recognized as a means, at least in theory, to sequester anthropogenic carbon dioxide. Aquatic microalgae have been identified as fast growing species whose carbon fixing rates are higher than those of land-based plants by one order of magnitude. Physical Sciences Inc. (PSI), Aquasearch, and the Hawaii Natural Energy Institute at the University of Hawaii are jointly developing technologies for recovery and sequestration of CO{sub 2} from stationary combustion systems by photosynthesis of microalgae. The research is aimed primarily at demonstrating the ability of selected species of microalgae to effectively fix carbon from typical power plant exhaust gases. This report covers the reporting period 1 April to 30 June 2004 in which PSI, Aquasearch and University of Hawaii conducted their tasks. Based on the work during the previous reporting period, Aquasearch run further, pilot and full scale, carbon sequestration tests with actual propane combustion gases utilizing two different strains of microalgae. Aquasearch continued testing modifications to the coal combustor to allow for longer-term burns. Aquasearch also tested an alternative cell separation technology. University of Hawaii performed experiments at the Mera Pharmaceuticals facility in Kona in mid June to obtain data on the carbon venting rate out of the photobioreactor; gas venting rates were measured with an orifice flow meter and gas samples were collected for GC analysis to determine the carbon content of the vented gases.

Takashi Nakamura

2004-11-01T23:59:59.000Z

154

Simulation of CO2 Sequestration and Enhanced Coalbed Methane Production in Multiple Appalachian Basin Coal Seams  

SciTech Connect (OSTI)

A DOE-funded field injection of carbon dioxide is to be performed in an Appalachian Basin coal seam by CONSOL Energy and CNX Gas later this year. A preliminary analysis of the migration of CO2 within the Upper Freeport coal seam and the resulting ground movements has been performed on the basis of assumed material and geometric parameters. Preliminary results show that ground movements at the field site may be in a range that are measurable by tiltmeter technology.

Bromhal, G.S.; Siriwardane, H.J.; Gondle, R.K.

2007-11-01T23:59:59.000Z

155

Southwestern Regional Partnership For Carbon Sequestration (Phase 2) Pump Canyon CO2- ECBM/Sequestration Demonstration, San Juan Basin, New Mexico  

SciTech Connect (OSTI)

Within the Southwest Regional Partnership on Carbon Sequestration (SWP), three demonstrations of geologic CO{sub 2} sequestration are being performed -- one in an oilfield (the SACROC Unit in the Permian basin of west Texas), one in a deep, unmineable coalbed (the Pump Canyon site in the San Juan basin of northern New Mexico), and one in a deep, saline reservoir (underlying the Aneth oilfield in the Paradox basin of southeast Utah). The Pump Canyon CO{sub 2}-enhanced coalbed methane (CO{sub 2}/ECBM) sequestration demonstration project plans to demonstrate the effectiveness of CO{sub 2} sequestration in deep, unmineable coal seams via a small-scale geologic sequestration project. The site is located in San Juan County, northern New Mexico, just within the limits of the high-permeability fairway of prolific coalbed methane production. The study area for the SWP project consists of 31 coalbed methane production wells located in a nine section area. CO{sub 2} was injected continuously for a year and different monitoring, verification and accounting (MVA) techniques were implemented to track the CO{sub 2} movement inside and outside the reservoir. Some of the MVA methods include continuous measurement of injection volumes, pressures and temperatures within the injection well, coalbed methane production rates, pressures and gas compositions collected at the offset production wells, and tracers in the injected CO{sub 2}. In addition, time-lapse vertical seismic profiling (VSP), surface tiltmeter arrays, a series of shallow monitoring wells with a regular fluid sampling program, surface measurements of soil composition, CO{sub 2} fluxes, and tracers were used to help in tracking the injected CO{sub 2}. Finally, a detailed reservoir model was constructed to help reproduce and understand the behavior of the reservoir under production and injection operation. This report summarizes the different phases of the project, from permitting through site closure, and gives the results of the different MVA techniques.

Advanced Resources International

2010-01-31T23:59:59.000Z

156

ENHANCED COAL BED METHANE PRODUCTION AND SEQUESTRATION OF CO2 IN UNMINEABLE COAL SEAMS  

SciTech Connect (OSTI)

The availability of clean, affordable energy is essential for the prosperity and security of the United States and the world in the 21st century. Carbon dioxide (CO{sub 2}) emissions to the atmosphere are an inherent part of energy-related activities, such as electricity generation, transportation, and building systems. These energy-related activities are responsible for roughly 85% of the U.S. greenhouse gas emissions, and 95% of these emissions are dominated by CO{sub 2}. Over the last few decades, an increased concentration of CO{sub 2} in the earth's atmosphere has been observed. Many scientists believe greenhouse gases, particularly CO{sub 2}, trap heat in the earth's atmosphere. Carbon sequestration technology offers an approach to redirect CO{sub 2} emissions into sinks (e.g., geologic formations, oceans, soils, and vegetation) and potentially stabilize future atmospheric CO{sub 2} levels. Coal seams are attractive CO{sub 2} sequestration sinks, due to their abundance and proximity to electricity-generation facilities. The recovery of marketable coal bed methane (CBM) provides a value-added stream, reducing the cost to sequester CO{sub 2} gas. Much research is needed to evaluate this technology in terms of CO{sub 2} storage capacity, sequestration stability, commercial feasibility and overall economics. CONSOL Energy, with support from the U.S. DOE, is conducting a seven-year program to construct and operate a coal bed sequestration site composed of a series of horizontally drilled wells that originate at the surface and extend through overlying coal seams in the subsurface. Once completed, the wells will be used to initially drain CBM from both the upper (mineable) and lower (unmineable) coal seams. After sufficient depletion of the reservoir, centrally located wells in the lower coal seam will be converted from CBM drainage wells to CO{sub 2} injection ports. CO{sub 2} will be measured and injected into the lower unmineable coal seam while CBM continues to drain from both seams. In addition to metering all injected CO{sub 2} and CBM produced, the program includes a plan to monitor horizontal migration of CO{sub 2} within the lower seam. This is the second Technical Progress report for the project. Progress to date has been focused on pre-construction activities; in particular, attaining site approvals and securing property rights for the project. This report provides a concise overview of project activity this period and plans for future work. This is the second semi-annual Technical Progress report under the subject agreement. During this report period, progress was made in completing the environmental assessment report, securing land and coal rights, and evaluating drilling strategies. These aspects of the project are discussed in detail in this report.

Gary L. Cairns

2002-10-01T23:59:59.000Z

157

GEOLOGIC SCREENING CRITERIA FOR SEQUESTRATION OF CO2 IN COAL: QUANTIFYING POTENTIAL OF THE BLACK WARRIOR COALBED METHANE FAIRWAY, ALABAMA  

SciTech Connect (OSTI)

Sequestration of CO{sub 2} in coal has potential benefits for reducing greenhouse gas emissions from the highly industrialized Carboniferous coal basins of North America and Europe and for enhancing coalbed methane recovery. Hence, enhanced coalbed methane recovery operations provide a basis for a market-based environmental solution in which the cost of sequestration is offset by the production and sale of natural gas. The Black Warrior foreland basin of west-central Alabama contains the only mature coalbed methane production fairway in eastern North America, and data from this basin provide an excellent basis for quantifying the carbon sequestration potential of coal and for identifying the geologic screening criteria required to select sites for the demonstration and commercialization of carbon sequestration technology. Coalbed methane reservoirs in the upper Pottsville Formation of the Black Warrior basin are extremely heterogeneous, and this heterogeneity must be considered to screen areas for the application of CO{sub 2} sequestration and enhanced coalbed methane recovery technology. Major screening factors include stratigraphy, geologic structure, geothermics, hydrogeology, coal quality, sorption capacity, technology, and infrastructure. Applying the screening model to the Black Warrior basin indicates that geologic structure, water chemistry, and the distribution of coal mines and reserves are the principal determinants of where CO{sub 2} can be sequestered. By comparison, coal thickness, temperature-pressure conditions, and coal quality are the key determinants of sequestration capacity and unswept coalbed methane resources. Results of this investigation indicate that the potential for CO{sub 2} sequestration and enhanced coalbed methane recovery in the Black Warrior basin is substantial and can result in significant reduction of greenhouse gas emissions while increasing natural gas reserves. Coal-fired power plants serving the Black Warrior basin in Alabama emit approximately 31 MMst (2.4 Tcf) of CO{sub 2} annually. The total sequestration capacity of the Black Warrior coalbed methane fairway at 350 psi is about 189 MMst (14.9 Tcf), which is equivalent to 6.1 years of greenhouse gas emissions from the coal-fired power plants. Applying the geologic screening model indicates that significant parts of the coalbed methane fairway are not accessible because of fault zones, coal mines, coal reserves, and formation water with TDS content less than 3,000 mg/L. Excluding these areas leaves a sequestration potential of 60 MMst (4.7 Tcf), which is equivalent to 1.9 years of emissions. Therefore, if about10 percent of the flue gas stream from nearby power plants is dedicated to enhanced coalbed methane recovery, a meaningful reduction of CO{sub 2} emissions can be realized for nearly two decades. If the fresh-water restriction were removed for the purposes of CO{sub 2} sequestration, an additional 10 MMst (0.9 Tcf) of CO{sub 2} could feasibly be sequestered. The amount of unswept coalbed methane in the fairway is estimated to be 1.49 Tcf at a pressure of 50 psi. Applying the screening model results in an accessible unswept gas resource of 0.44 Tcf. Removal of the fresh-water restriction would elevate this number to 0.57 Tcf. If a recovery factor of 80 percent can be realized, then enhanced recovery activities can result in an 18 percent expansion of coalbed methane reserves in the Black Warrior basin.

Jack C. Pashin; Richard E. Carroll; Richard H. Groshong Jr.; Dorothy E. Raymond; Marcella McIntyre; J. Wayne Payton

2004-01-01T23:59:59.000Z

158

Selection of coals of different maturities for CO2 Storage by modelling of CH4 and CO2 adsorption isotherms  

E-Print Network [OSTI]

of this study is to compare and model pure gas sorption isotherms (CO2 and CH4) for well-characterised coals of different maturities to determine the most suitable coal for CO2 storage. Carbon dioxide and methane; Coals; Methane and carbon dioxide adsorption; Modelling isotherms 1. Introduction CO2 is a greenhouse

Paris-Sud XI, Université de

159

Building new power plants in a CO2 constrained world: A Case Study from Norway on Gas-Fired Power Plants, Carbon Sequestration, and  

E-Print Network [OSTI]

including technologies for carbon sequestration. Norway's primary energy production is dominated by oilBuilding new power plants in a CO2 constrained world: A Case Study from Norway on Gas-Fired Power director. Most of the material used in this work are either courtesy of the persons I talked to in Norway

160

Advanced Oxyfuel Boilers and Process Heaters for Cost Effective CO2 Capture and Sequestration  

SciTech Connect (OSTI)

The purpose of the advanced boilers and process heaters program is to assess the feasibility of integrating Oxygen Transport Membranes (OTM) into combustion processes for cost effective CO{sub 2} capture and sequestration. Introducing CO{sub 2} capture into traditional combustion processes can be expensive, and the pursuit of alternative methods, like the advanced boiler/process heater system, may yield a simple and cost effective solution. In order to assess the integration of an advanced boiler/process heater process, this program addressed the following tasks: Task 1--Conceptual Design; Task 2--Laboratory Scale Evaluation; Task 3--OTM Development; Task 4--Economic Evaluation and Commercialization Planning; and Task 5--Program Management. This Final report documents and summarizes all of the work performed for the DOE award DE-FC26-01NT41147 during the period from January 2002-March 2007. This report outlines accomplishments for the following tasks: conceptual design and economic analysis, oxygen transport membrane (OTM) development, laboratory scale evaluations, and program management.

Max Christie; Rick Victor; Bart van Hassel; Nagendra Nagabushana; Juan Li; Joseph Corpus; Jamie Wilson

2007-03-31T23:59:59.000Z

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161

Probability Estimation of CO2 Leakage Through Faults at Geologic Carbon Sequestration Sites  

SciTech Connect (OSTI)

Leakage of CO{sub 2} and brine along faults at geologic carbon sequestration (GCS) sites is a primary concern for storage integrity. The focus of this study is on the estimation of the probability of leakage along faults or fractures. This leakage probability is controlled by the probability of a connected network of conduits existing at a given site, the probability of this network encountering the CO{sub 2} plume, and the probability of this network intersecting environmental resources that may be impacted by leakage. This work is designed to fit into a risk assessment and certification framework that uses compartments to represent vulnerable resources such as potable groundwater, health and safety, and the near-surface environment. The method we propose includes using percolation theory to estimate the connectivity of the faults, and generating fuzzy rules from discrete fracture network simulations to estimate leakage probability. By this approach, the probability of CO{sub 2} escaping into a compartment for a given system can be inferred from the fuzzy rules. The proposed method provides a quick way of estimating the probability of CO{sub 2} or brine leaking into a compartment. In addition, it provides the uncertainty range of the estimated probability.

Zhang, Yingqi; Oldenburg, Curt; Finsterle, Stefan; Jordan, Preston; Zhang, Keni

2008-11-01T23:59:59.000Z

162

Two-Stage, Integrated, Geothermal-CO2 Storage Reservoirs: An Approach for Sustainable Energy Production, CO2-Sequestration Security, and Reduced Environmental Risk  

SciTech Connect (OSTI)

We introduce a hybrid two-stage energy-recovery approach to sequester CO{sub 2} and produce geothermal energy at low environmental risk and low cost by integrating geothermal production with CO{sub 2} capture and sequestration (CCS) in saline, sedimentary formations. Our approach combines the benefits of the approach proposed by Buscheck et al. (2011b), which uses brine as the working fluid, with those of the approach first suggested by Brown (2000) and analyzed by Pruess (2006), using CO{sub 2} as the working fluid, and then extended to saline-formation CCS by Randolph and Saar (2011a). During stage one of our hybrid approach, formation brine, which is extracted to provide pressure relief for CO{sub 2} injection, is the working fluid for energy recovery. Produced brine is applied to a consumptive beneficial use: feedstock for fresh water production through desalination, saline cooling water, or make-up water to be injected into a neighboring reservoir operation, such as in Enhanced Geothermal Systems (EGS), where there is often a shortage of a working fluid. For stage one, it is important to find economically feasible disposition options to reduce the volume of brine requiring reinjection in the integrated geothermal-CCS reservoir (Buscheck et al. 2012a). During stage two, which begins as CO{sub 2} reaches the production wells; coproduced brine and CO{sub 2} are the working fluids. We present preliminary reservoir engineering analyses of this approach, using a simple conceptual model of a homogeneous, permeable CO{sub 2} storage formation/geothermal reservoir, bounded by relatively impermeable sealing units. We assess both the CO{sub 2} sequestration capacity and geothermal energy production potential as a function of well spacing between CO{sub 2} injectors and brine/CO{sub 2} producers for various well patterns and for a range of subsurface conditions.

Buscheck, T A; Chen, M; Sun, Y; Hao, Y; Elliot, T R

2012-02-02T23:59:59.000Z

163

CO2-H2O Mixtures in the Geological Sequestration of CO2. II. Partitioning in Chloride Brines at 12-100 °C and 1-600 bar.  

Office of Scientific and Technical Information (OSTI)

CO CO 2 -H 2 O Mixtures in the Geological Sequestration of CO 2 . II. Partitioning in Chloride Brines at 12-100°C and up to 600 bar. Nicolas Spycher and Karsten Pruess Lawrence Berkeley National Laboratory, MS 90-1116, 1 Cyclotron Road, Berkeley, California, USA September 2004 ABSTRACT Correlations presented by Spycher et al. (2003) to compute the mutual solubilities of CO 2 and H 2 O are extended to include the effect of chloride salts in the aqueous phase. This is accomplished by including, in the original formulation, activity coefficients for aqueous CO 2 derived from several literature sources, primarily for NaCl solutions. Best results are obtained when combining the solubility correlations of Spycher et al. (2003) with the activity coefficient formulation of Rumpf et al. (1994) and Duan and Sun (2003), which

164

Investigating Sequestration Potential of Carbonate Rocks during Tertiary Recovery from a Billion Barrel Oil Field, Weyburn, Saskatchewan: the Geoscience Framework (IEA Weyburn CO2 Monitoring Project)  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Sequestration Potential of Carbonate Rocks during Tertiary Sequestration Potential of Carbonate Rocks during Tertiary Recovery from a Billion Barrel Oil Field, Weyburn, Saskatchewan: the Geoscience Framework (IEA Weyburn CO 2 Monitoring and Storage Project) G. Burrowes (Geoffrey_Burrowes@pancanadian.ca; 403-290-2796) PanCanadian Resources 150 - 9 th Avenue S.W., P.O. Box 2850 Calgary, Alberta, Canada T2P 2S5 C. Gilboy (cgilboy@sem.gov.sk.ca; 306-787-2573) Petroleum Geology Branch, Saskatchewan Energy and Mines 201 Dewdney Avenue East Regina, Saskatchewan, Canada S4N 4G3 Introduction In Western Canada the application of CO 2 injection for enhanced, 'tertiary' oil recovery is a relatively recent addition to the arsenal available to reservoir engineers. The first successful application of CO 2 as a miscible fluid in Western Canada began in 1984 at Joffre Field, a

165

GEOLOGIC SCREENING CRITERIA FOR SEQUESTRATION OF CO2 IN COAL: QUANTIFYING POTENTIAL OF THE BLACK WARRIOR COALBED METHANE FAIRWAY, ALABAMA  

SciTech Connect (OSTI)

Sequestration of CO{sub 2} in coal has potential to reduce greenhouse gas emissions from coal-fired power plants while enhancing coalbed methane recovery. Data from more than 4,000 coalbed methane wells in the Black Warrior basin of Alabama provide an opportunity to quantify the carbon sequestration potential of coal and to develop a geologic screening model for the application of carbon sequestration technology. This report summarizes stratigraphy and sedimentation, structural geology, geothermics, hydrology, coal quality, gas capacity, and production characteristics of coal in the Black Warrior coalbed methane fairway and the implications of geology for carbon sequestration and enhanced coalbed methane recovery. Coal in the Black Warrior basin is distributed among several fluvial-deltaic coal zones in the Lower Pennsylvanian Pottsville Formation. Most coal zones contain one to three coal beds that are significant targets for coalbed methane production and carbon sequestration, and net coal thickness generally increases southeastward. Pottsville strata have effectively no matrix permeability to water, so virtually all flow is through natural fractures. Faults and folds influence the abundance and openness of fractures and, hence, the performance of coalbed methane wells. Water chemistry in the Pottsville Formation ranges from fresh to saline, and zones with TDS content lower than 10,000 mg/L can be classified as USDW. An aquifer exemption facilitating enhanced recovery in USDW can be obtained where TDS content is higher than 3,000 mg/L. Carbon dioxide becomes a supercritical fluid above a temperature of 88 F and a pressure of 1,074 psi. Reservoir temperature exceeds 88 F in much of the study area. Hydrostatic pressure gradients range from normal to extremely underpressured. A large area of underpressure is developed around closely spaced longwall coal mines, and areas of natural underpressure are distributed among the coalbed methane fields. The mobility and reactivity of supercritical CO{sub 2} in coal-bearing strata is unknown, and potential exists for supercritical conditions to develop below a depth of 2,480 feet following abandonment of the coalbed methane fields. High-pressure adsorption isotherms confirm that coal sorbs approximately twice as much CO{sub 2} as CH{sub 4} and approximately four times as much CO{sub 2} as N{sub 2}. Analysis of isotherm data reveals that the sorption performance of each gas can vary by a factor of two depending on rank and ash content. Gas content data exhibit extreme vertical and lateral variability that is the product of a complex burial history involving an early phase of thermogenic gas generation and an ongoing stage of late biogenic gas generation. Production characteristics of coalbed methane wells are helpful for identifying areas that are candidates for carbon sequestration and enhanced coalbed methane recovery. Many geologic and engineering factors, including well construction, well spacing, and regional structure influence well performance. Close fault spacing limits areas where five-spot patterns may be developed for enhanced gas recovery, but large structural panels lacking normal faults are in several gas fields and can be given priority as areas to demonstrate and commercialize carbon sequestration technology in coalbed methane reservoirs.

Jack C. Pashin; Richard E. Carroll; Richard H. Groshong, Jr.; Dorothy E. Raymond; Marcella McIntyre; J. Wayne Payton

2003-01-01T23:59:59.000Z

166

Modeling the resolution of inexpensive, novel non-seismic geophysical monitoring tools to monitor CO2 injection into coal beds  

E-Print Network [OSTI]

of enhanced oil recovery (EOR) projects showed them to bestudy of proposed CO 2 EOR/sequestration of the SchraderAbbreviations CBM CO 2 Ex Ey EM EOR Im ?Gal NIST Re Rx S Tx

Gasperikova, E.

2010-01-01T23:59:59.000Z

167

Effect of silica sand size on the formation kinetics of CO2 hydrate in porous media in the presence of pure water and seawater relevant for CO2 sequestration  

Science Journals Connector (OSTI)

Abstract Understanding the kinetics of carbon dioxide (CO2) hydrate formation in pure water, seawater and porous media aids in developing technologies for CO2 gas storage, carbon capture and sequestration (CCS) and potentially for methane production from methane hydrates. The present work is focused on understanding the kinetics of CO2 hydrate formation in pure water and seawater at an initial formation pressure of 6 MPa (providing a driving force of about 4.0 MPa) and a formation temperature of 276.15 K with 75% water saturation in three silica sand particle sizes (0.16 mm, 0.46 mm and 0.92 mm). The seawater (3.3 wt% salinity) used in the present study is obtained from sea coast of Chennai (India). It is observed that the gas consumption of CO2 in hydrate is more for smaller silica sand particle and decreases as the size of the sand increases. The total gas consumed at the end of the seawater experiment is found to be less than the gas consumed at the end of the pure water experiment. This is due to the fact that salts in seawater act as a thermodynamic inhibitor resulting in lower gas consumption of CO2 in hydrate. The average rate of hydrate formation observed is optimum in 0.46 mm particles and is observed to be higher as compared to 0.16 and 0.92 mm particles over 10 h experimental time. This indicates that 0.46 mm silica sand provides an optimum environment for efficient hydrate formation. The study can be useful to understand the suitability of potential sandstone reservoir for CO2 sequestration in the form of hydrate in the presence of saline formation water.

Prathyusha Mekala; Marc Busch; Deepjyoti Mech; Rachit S. Patel; Jitendra S. Sangwai

2014-01-01T23:59:59.000Z

168

W.A. Parish Post-Combustion CO2 Capture and Sequestration Project, Final Environmental Impact Statement (DOE/EIS-0473)  

Broader source: Energy.gov (indexed) [DOE]

W.A. W.A. Parish Post-Combustion CO 2 Capture and Sequestration Project Final Environmental Impact Statement Summary February 2013 DOE/EIS-0473 Office of Fossil Energy National Energy Technology Laboratory INTENTIONALLY LEFT BLANK COVER SHEET Responsible Federal Agency: U.S. Department of Energy (DOE) Title: W.A. Parish Post-Combustion CO 2 Capture and Sequestration Project, Final Environmental Impact Statement (DOE/EIS-0473) Location: Southeastern Texas, including Fort Bend, Wharton, and Jackson counties Contacts: For further information about this Environmental Impact Statement, contact: For general information on the DOE process for implementing the National Environmental Policy Act, contact: Mark W. Lusk U.S. Department of Energy National Energy Technology Laboratory 3610 Collins Ferry Road Morgantown, WV 26507-0880 (304) 285-4145 or Mark.Lusk@netl.doe.gov

169

Biomass Power and Conventional Fossil Systems with and without CO2 Sequestration Â… Comparing the Energy Balance, Greenhouse Gas Emissions and Economics  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

* NREL/TP-510-32575 * NREL/TP-510-32575 Biomass Power and Conventional Fossil Systems with and without CO 2 Sequestration - Comparing the Energy Balance, Greenhouse Gas Emissions and Economics Pamela L. Spath Margaret K. Mann National Renewable Energy Laboratory 1617 Cole Boulevard Golden, Colorado 80401-3393 NREL is a U.S. Department of Energy Laboratory Operated by Midwest Research Institute * Battelle Contract No. DE-AC36-99-GO10337 January 2004 * NREL/TP-510-32575 Biomass Power and Conventional Fossil Systems with and without CO 2 Sequestration - Comparing the Energy Balance, Greenhouse Gas Emissions and Economics Pamela L. Spath Margaret K. Mann Prepared under Task No. BB04.4010 National Renewable Energy Laboratory 1617 Cole Boulevard Golden, Colorado 80401-3393

170

Application of Cutting-Edge 3D Seismic Attribute Technology to the Assessment of Geological Reservoirs for CO2 Sequestration  

SciTech Connect (OSTI)

The goals of this project were to develop innovative 3D seismic attribute technologies and workflows to assess the structural integrity and heterogeneity of subsurface reservoirs with potential for CO{sub 2} sequestration. Our specific objectives were to apply advanced seismic attributes to aide in quantifying reservoir properies and lateral continuity of CO{sub 2} sequestration targets. Our study area is the Dickman field in Ness County, Kansas, a type locality for the geology that will be encountered for CO{sub 2} sequestration projects from northern Oklahoma across the U.S. midcontent to Indiana and beyond. Since its discovery in 1962, the Dickman Field has produced about 1.7 million barrels of oil from porous Mississippian carbonates with a small structural closure at about 4400 ft drilling depth. Project data includes 3.3 square miles of 3D seismic data, 142 wells, with log, some core, and oil/water production data available. Only two wells penetrate the deep saline aquifer. Geological and seismic data were integrated to create a geological property model and a flow simulation grid. We systematically tested over a dozen seismic attributes, finding that curvature, SPICE, and ANT were particularly useful for mapping discontinuities in the data that likely indicated fracture trends. Our simulation results in the deep saline aquifer indicate two effective ways of reducing free CO{sub 2}: (a) injecting CO{sub 2} with brine water, and (b) horizontal well injection. A tuned combination of these methods can reduce the amount of free CO{sub 2} in the aquifer from over 50% to less than 10%.

Christopher Liner; Jianjun Zeng; Po Geng Heather King Jintan Li; Jennifer Califf; John Seales

2010-03-31T23:59:59.000Z

171

ECONOMIC EVALUATION OF CO2 SEQUESTRATION TECHNOLOGIES TASK 4, BIOMASS GASIFICATION-BASED PROCESSING  

SciTech Connect (OSTI)

Biomass derived energy currently accounts for about 3 quads of total primary energy use in the United States. Of this amount, about 0.8 quads are used for power generation. Several biomass energy production technologies exist today which contribute to this energy mix. Biomass combustion technologies have been the dominant source of biomass energy production, both historically and during the past two decades of expansion of modern biomass energy in the U. S. and Europe. As a research and development activity, biomass gasification has usually been the major emphasis as a method of more efficiently utilizing the energy potential of biomass, particularly wood. Numerous biomass gasification technologies exist today in various stages of development. Some are simple systems, while others employ a high degree of integration for maximum energy utilization. The purpose of this study is to conduct a technical and economic comparison of up to three biomass gasification technologies, including the carbon dioxide emissions reduction potential of each. To accomplish this, a literature search was first conducted to determine which technologies were most promising based on a specific set of criteria. During this reporting period, the technical and economic performances of the selected processes were evaluated using computer models and available literature. The results of these evaluations are summarized in this report.

Martha L. Rollins; Les Reardon; David Nichols; Patrick Lee; Millicent Moore; Mike Crim; Robert Luttrell; Evan Hughes

2002-04-01T23:59:59.000Z

172

Geologic Sequestration of CO2 in Deep, Unmineable Coalbeds: An Integrated Researdh and Commercial-Scale Field Demonstration Project  

SciTech Connect (OSTI)

The Coal-Seq consortium is a government-industry collaborative consortium with the objective of advancing industry's understanding of complex coalbed methane and gas shale reservoir behavior in the presence of multi-component gases via laboratory experiments, theoretical model development and field validation studies. This will allow primary recovery, enhanced recovery and CO{sub 2} sequestration operations to be commercially enhanced and/or economically deployed. The project was initially launched in 2000 as a U.S. Department of Energy sponsored investigation into CO{sub 2} sequestration in deep, unmineable coalseams. The initial project accomplished a number of important objectives, which mainly revolved around performing baseline experimental studies, documenting and analyzing existing field projects, and establishing a global network for technology exchange. The results from that Phase have been documented in a series of reports which are publicly available. An important outcome of the initial phase was that serious limitations were uncovered in our knowledge of reservoir behavior when CO{sub 2} is injected into coal. To address these limitations, the project was extended in 2005 as a government-industry collaborative consortium. Selected accomplishments from this phase have included the identification and/or development of new models for multi-component sorption and diffusion, laboratory studies of coal geomechanical and permeability behavior with CO{sub 2} injection, additional field validation studies, and continued global technology exchange. Further continuation of the consortium is currently being considered. Some of the topics that have been identified for investigation include further model development/refinement related to multicomponent equations-of-state, sorption and diffusion behavior, geomechanical and permeability studies, technical and economic feasibility studies for major international coal basins, the extension of the work to gas shale reservoirs, and continued global technology exchange.

Scott Reeves; George Koperna

2008-09-30T23:59:59.000Z

173

Estimation of Parameters in Carbon Sequestration Models from Net Ecosystem  

E-Print Network [OSTI]

Estimation of Parameters in Carbon Sequestration Models from Net Ecosystem Exchange Data Luther in the context of a deterministic com- partmental carbon sequestration system. Sensitivity and approximation usefulness in the estimation of parameters within a compartmental carbon sequestration model. Previously we

White, Luther

174

Economic Modeling of Carbon Capture and Sequestration Technologies  

E-Print Network [OSTI]

Economic Modeling of Carbon Capture and Sequestration Technologies Jim McFarland (jrm1@mit.edu; +1 explores the economics of carbon capture and sequestration technologies as applied to electric generating of the world economy, is used to model two of the most promising carbon capture and sequestration (CCS

175

Simulation study on the CO2-driven enhanced gas recovery with sequestration versus the re-fracturing treatment of horizontal wells in the U.S. unconventional shale reservoirs  

Science Journals Connector (OSTI)

Abstract It is proposed that very low permeability formations are possible candidates for CO2 sequestration. Further, experimental studies have shown that shale formations have huge affinity to adsorb CO2, the order of 5 to 1 compared to the methane. Therefore, potential sequestration of CO2 in shale formations leading to enhanced gas recovery (EGR) will be a promising while challenging target for the oil and gas industry. On the other side, hydraulic re-fracturing treatment of shale gas wells is currently gaining more attention due to the poor performance of shale gas reservoirs after a couple years of production. Hence, investigating and comparing the performance of CO2-EGR with the re-fracturing treatment is essential for the future economic viability of depleted shale gas reservoirs. This paper presents a systematic comparison of the effect of these two processes on improving gas production performance of unconventional reservoirs, which is not well understood and has not been studied thoroughly in the literature. In this paper, a shale gas field data has been evaluated and incorporated in our simulations for both CO2-EGR and re-fracturing treatment purposes. Numerical simulations are performed using local grid refinement (LGR) in order to accurately model the non-linear pressure drop. Also, a dual-porosity/dual-permeability model is incorporated in the reservoir simulation model. Further, the uncertainties associated with inter-related set of geologic and engineering parameters are evaluated and quantified for re-fracturing treatment through several simulation runs. This comprehensive sensitivity study helps in understanding the key reservoir and fracture properties that affect the production performance and enhanced gas recovery in shale gas reservoirs. The results showed that re-fracturing treatment outperforms CO2-EGR due to the pronounced effect on cumulative methane gas production. Moreover, the sensitivity analysis showed that the characteristics of reservoir matrix including permeability and porosity are the most influential parameters for re-fracturing treatment. The findings of this study recommend hydraulic re-fracturing of shale reservoirs at first for enhancing gas production followed by CO2 injection at a later time. This work provides field operators with more insight into maximizing gas recovery from unconventional shale gas reservoirs using re-fracturing stimulation, CO2 injection, or a combination of both methods.

Mohammad O. Eshkalak; Emad W. Al-Shalabi; Alireza Sanaei; Umut Aybar; Kamy Sepehrnoori

2014-01-01T23:59:59.000Z

176

CO2 Capture Project-An Integrated, Collaborative Technology Development Project for Next Generation CO2 Separation, Capture and Geologic Sequestration  

SciTech Connect (OSTI)

The CO{sub 2} Capture Project (CCP) was a joint industry project, funded by eight energy companies (BP, ChevronTexaco, EnCana, ENI, Norsk Hydro, Shell, Statoil, and Suncor) and three government agencies (European Union [DG RES & DG TREN], the Norwegian Research Council [Klimatek Program] and the U.S. Department of Energy [NETL]). The project objective was to develop new technologies that could reduce the cost of CO{sub 2} capture and geologic storage by 50% for retrofit to existing plants and 75% for new-build plants. Technologies were to be developed to ''proof of concept'' stage by the end of 2003. Certain promising technology areas were increased in scope and the studies extended through 2004. The project budget was approximately $26.4 million over 4 years and the work program is divided into eight major activity areas: Baseline Design and Cost Estimation--defined the uncontrolled emissions from each facility and estimate the cost of abatement in $/tonne CO{sub 2}. Capture Technology, Post Combustion: technologies, which can remove CO{sub 2} from exhaust gases after combustion. Capture Technology, Oxyfuel: where oxygen is separated from the air and then burned with hydrocarbons to produce an exhaust with high CO{sub 2} for storage. Capture Technology, Pre-Combustion: in which, natural gas and petroleum cokes are converted to hydrogen and CO{sub 2} in a reformer/gasifier. Common Economic Model/Technology Screening: analysis and evaluation of each technology applied to the scenarios to provide meaningful and consistent comparison. New Technology Cost Estimation: on a consistent basis with the baseline above, to demonstrate cost reductions. Geologic Storage, Monitoring and Verification (SMV): providing assurance that CO{sub 2} can be safely stored in geologic formations over the long term. Non-Technical: project management, communication of results and a review of current policies and incentives governing CO{sub 2} capture and storage. Pre-combustion De-carbonization (hydrogen fuel) technologies showed excellent results and may be able to meet the CCP's aggressive cost reduction targets for new-build plants. Chemical looping to produce oxygen for oxyfuel combustion shows real promise. Post-combustion technologies emerged as higher cost options that may only have niche roles. Storage, measurement, and verification studies suggest that geologic sequestration will be a safe form of long-term CO{sub 2} storage. Economic modeling shows that options to reduce costs by 50% exist. A rigorous methodology for technology evaluation was developed. Public acceptance and awareness were enhanced through extensive communication of results to the stakeholder community (scientific, NGO, policy, and general public). Two volumes of results have been published and are available to all. Well over 150 technical papers were produced. All funded studies for this phase of the CCP are complete. The results are summarized in this report and all final reports are presented in the attached appendices.

Helen Kerr; Linda M. Curran

2005-04-15T23:59:59.000Z

177

CO2 CAPTURE PROJECT-AN INTEGRATED, COLLABORATIVE TECHNOLOGY DEVELOPMENT PROJECT FOR NEXT GENERATION CO2 SEPARATION, CAPTURE AND GEOLOGIC SEQUESTRATION  

SciTech Connect (OSTI)

The CO{sub 2} Capture Project (CCP) is a joint industry project, funded by eight energy companies (BP, ChevronTexaco, EnCana, Eni, Norsk Hydro, Shell, Statoil, and Suncor) and three government agencies (European Union (DG Res & DG Tren), Norway (Klimatek) and the U.S.A. (Department of Energy)). The project objective is to develop new technologies, which could reduce the cost of CO{sub 2} capture and geologic storage by 50% for retrofit to existing plants and 75% for new-build plants. Technologies are to be developed to ''proof of concept'' stage by the end of 2003. The project budget is approximately $24 million over 3 years and the work program is divided into eight major activity areas: (1) Baseline Design and Cost Estimation--defined the uncontrolled emissions from each facility and estimate the cost of abatement in $/tonne CO{sub 2}. (2) Capture Technology, Post Combustion--technologies, which can remove CO{sub 2} from exhaust gases after combustion. (3) Capture Technology, Oxyfuel--where oxygen is separated from the air and then burned with hydrocarbons to produce an exhaust with wet high concentrations of CO{sub 2} for storage. (4) Capture Technology, Pre-Combustion--in which, natural gas and petroleum coke are converted to hydrogen and CO{sub 2} in a reformer/gasifier. (5) Common Economic Model/Technology Screening--analysis and evaluation of each technology applied to the scenarios to provide meaningful and consistent comparison. (6) New Technology Cost Estimation: on a consistent basis with the baseline above, to demonstrate cost reductions. (7) Geologic Storage, Monitoring and Verification (SMV)--providing assurance that CO{sub 2} can be safely stored in geologic formations over the long term. (8) Non-Technical: project management, communication of results and a review of current policies and incentives governing CO{sub 2} capture and storage. Technology development work dominated the past six months of the project. Numerous studies have completed their 2003 stagegate review and are reported here. Some will proceed to the next stagegate review in 2004. Some technologies are emerging as preferred over others. Pre-combustion De-carbonization (hydrogen fuel) technologies are showing excellent results and may be able to meet the CCP's aggressive cost reduction targets for new-build plants. The workscopes planned for the next key stagegates are under review before work begins based on the current economic assessment of their performance. Chemical looping to produce oxygen for oxyfuel combustion shows real promise. As expected, post-combustion technologies are emerging as higher cost options but even so some significant potential reductions in cost have been identified and will continue to be explored. Storage, measurement, and verification studies are moving rapidly forward and suggest that geologic sequestration can be a safe form of long-term CO{sub 2} storage. Hyper-spectral geo-botanical measurements may be an inexpensive and non-intrusive method for long-term monitoring. Modeling studies suggest that primary leakage routes from CO{sub 2} storage sites may be along old wellbores in areas disturbed by earlier oil and gas operations. This is good news because old wells are usually mapped and can be repaired during the site preparation process. Wells are also easy to monitor and intervention is possible if needed. The project will continue to evaluate and bring in novel studies and ideas within the project scope as requested by the DOE. The results to date are summarized in the attached report and presented in detail in the attached appendices.

Helen Kerr

2004-04-01T23:59:59.000Z

178

Numerical Modeling of Hydrate Formation in Sand Sediment Simulating Sub-Seabed CO2 Storage in the form of Gas Hydrate  

Science Journals Connector (OSTI)

Abstract Among several methods for CO2 capture and storage, we focus on CO2 sequestration in the form of gas hydrate under the seafloor, mainly for many sequestration sites offshore Japan and for little risk of CO2 leakage from the sediment. However, it is difficult to evaluate the precise storage potential and cost of this method due to the lack of the relevant information. Here, in order to do feasibility studies of this technique so as to make an effective storage method, we made a 3-dimentional gas water flow simulator with kinetic hydrate formation. The new design of CO2 hydrate formation in porous media under two-phase flow condition was implemented in this simulator, and unknown parameters in necessary mathematical models for gas-water flow in sand sediments were verified from the comparison between the results of the numerical simulations and the experimental measurements from the previous study.

Takuya Nakashima; Toru Sato; Masayuki Inui

2013-01-01T23:59:59.000Z

179

FUEL-FLEXIBLE GASIFICATION-COMBUSTION TECHNOLOGY FOR PRODUCTION OF H2 AND SEQUESTRATION-READY CO2  

SciTech Connect (OSTI)

It is expected that in the 21st century the Nation will continue to rely on fossil fuels for electricity, transportation, and chemicals. It will be necessary to improve both the thermodynamic efficiency and environmental impact performance of fossil fuel utilization. General Electric Energy and Environmental Research Corporation (GE-EER) has developed an innovative fuel-flexible Advanced Gasification-Combustion (AGC) concept to produce H{sub 2} and sequestration-ready CO{sub 2} from solid fuels. The AGC module offers potential for reduced cost and increased energy efficiency relative to conventional gasification and combustion systems. GE-EER was awarded a Vision-21 program from U.S. DOE NETL to develop the AGC technology. Work on this three-year program started on October 1, 2000. The project team includes GE-EER, California Energy Commission, Southern Illinois University at Carbondale, and T. R. Miles, Technical Consultants, Inc. In the AGC technology, coal/opportunity fuels and air are simultaneously converted into separate streams of (1) pure hydrogen that can be utilized in fuel cells, (2) sequestration-ready CO{sub 2}, and (3) high temperature/pressure oxygen depleted air to produce electricity in a gas turbine. The process produces near-zero emissions and, based on preliminary modeling work in the first quarter of this program, has an estimated process efficiency of approximately 67% based on electrical and H{sub 2} energy outputs relative to the higher heating value of coal. The three-year R and D program will determine the operating conditions that maximize separation of CO{sub 2} and pollutants from the vent gas, while simultaneously maximizing coal conversion efficiency and hydrogen production. The program integrates lab-, bench- and pilot-scale studies to demonstrate the AGC concept. This is the 1st quarterly progress report for the Vision-21 AGC program supported by U.S. DOE NETL (Contract: DE-FC26-00FT40974). This report summarizes program accomplishments for the period starting October 1, 2000 and ending December 31, 2000. The report includes an introduction summarizing the AGC concept, main program tasks, objectives of this program, and provides a summary of initial program activities covering program management and preliminary progress in first year tasks including lab- and bench-scale design, facilities preparation, and process/kinetic modeling. More over, the report presents and discusses preliminary results particularly form the bench-scale design and process modeling efforts including a process flow diagram that incorporates the AGC module with other vision-21 plant components with the objective of maximizing H{sub 2} production and process efficiency.

George Rizeq; Ravi Kumar; Janice West; Vitali Lissianski; Neil Widmer; Vladimir Zamansky

2001-01-01T23:59:59.000Z

180

A Finite Element Model for Simulation of Carbon Dioxide Sequestration  

SciTech Connect (OSTI)

We present a hydro-mechanical model, followed by stress, deformation, and shear-slip failure analysis for geological sequestration of carbon dioxide (CO2). The model considers the poroelastic effects by taking into account of the two-way coupling between the geomechanical response and the fluid flow process. Analytical solutions for pressure and deformation fields were derived for a typical geological sequestration scenario in our previous work. A finite element approach is introduced here for numerically solving the hydro-mechanical model with arbitrary boundary conditions. The numerical approach was built on an open-source finite element code Elmer, and results were compared to the analytical solutions. The shear-slip failure analysis was presented based on the numerical results, where the potential failure zone is identified. Information is relevant to the prediction of the maximum sustainable injection rate or pressure. The effects of caprock permeability on the fluid pressure, deformation, stress, and the shear-slip failure zone were also quantitatively studied. It was shown that a larger permeability in caprock and base rock leads to a larger uplift but a smaller shear-slip failure zone.

Bao, Jie; Xu, Zhijie; Fang, Yilin

2013-11-02T23:59:59.000Z

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181

Fuel-Flexible Gasification-Combustion Technology for Production of H2 and Sequestration-Ready CO2  

SciTech Connect (OSTI)

GE Global Research is developing an innovative energy technology for coal gasification with high efficiency and near-zero pollution. This Unmixed Fuel Processor (UFP) technology simultaneously converts coal, steam and air into three separate streams of hydrogen-rich gas, sequestration-ready CO{sub 2}, and high-temperature, high-pressure vitiated air to produce electricity in gas turbines. This is the draft final report for the first stage of the DOE-funded Vision 21 program. The UFP technology development program encompassed lab-, bench- and pilot-scale studies to demonstrate the UFP concept. Modeling and economic assessments were also key parts of this program. The chemical and mechanical feasibility were established via lab and bench-scale testing, and a pilot plant was designed, constructed and operated, demonstrating the major UFP features. Experimental and preliminary modeling results showed that 80% H{sub 2} purity could be achieved, and that a UFP-based energy plant is projected to meet DOE efficiency targets. Future work will include additional pilot plant testing to optimize performance and reduce environmental, operability and combined cycle integration risks. Results obtained to date have confirmed that this technology has the potential to economically meet future efficiency and environmental performance goals.

George Rizeq; Janice West; Raul Subia; Arnaldo Frydman; Parag Kulkarni; Jennifer Schwerman; Valadimir Zamansky; John Reinker; Kanchan Mondal; Lubor Stonawski; Hana Loreth; Krzysztof Piotrowski; Tomasz Szymanski; Tomasz Wiltowski; Edwin Hippo

2005-02-28T23:59:59.000Z

182

Development and evaluation of a thermodynamic dataset for phases of interest in CO2 mineral sequestration in basaltic rocks  

E-Print Network [OSTI]

evaluation of a thermodynamic dataset for phases of interestKeywords: Thermodynamic dataset CO2–water– basaltABSTRACT A thermodynamic dataset describing 36 mineral

Aradottir, E.S.P.

2013-01-01T23:59:59.000Z

183

Development of experimental methods for intermediate scale testing of deep geologic CO2 sequestration trapping processes at ambient laboratory conditions.  

E-Print Network [OSTI]

??Carbon Capture and Storage (CCS) is a potential strategy to reduce CO2 emissions into the atmosphere. Deep geological formations provide a viable storage site for… (more)

Vargas-Johnson, Javier

2014-01-01T23:59:59.000Z

184

FUEL-FLEXIBLE GASIFICATION-COMBUSTION TECHNOLOGY FOR PRODUCTION OF H2 AND SEQUESTRATION-READY CO2  

SciTech Connect (OSTI)

It is expected that in the 21st century the Nation will continue to rely on fossil fuels for electricity, transportation, and chemicals. It will be necessary to improve both the process efficiency and environmental impact performance of fossil fuel utilization. GE Energy and Environmental Research Corporation (GE EER) has developed an innovative fuel-flexible Unmixed Fuel Processor (UFP) technology to produce H{sub 2}, power, and sequestration-ready CO{sub 2} from coal and other solid fuels. The UFP module offers the potential for reduced cost, increased process efficiency relative to conventional gasification and combustion systems, and near-zero pollutant emissions including NO{sub x}. GE EER (prime contractor) was awarded a Vision 21 program from U.S. DOE NETL to develop the UFP technology. Work on this Phase I program started on October 1, 2000. The project team includes GE EER, Southern Illinois University at Carbondale (SIU-C), California Energy Commission (CEC), and T. R. Miles, Technical Consultants, Inc. In the UFP technology, coal/opportunity fuels and air are simultaneously converted into separate streams of (1) pure hydrogen that can be utilized in fuel cells, (2) sequestration-ready CO{sub 2}, and (3) high temperature/pressure oxygen-depleted air to produce electricity in a gas turbine. The process produces near-zero emissions and, based on process modeling work, has an estimated process efficiency of 68%, based on electrical and H{sub 2} energy outputs relative to the higher heating value of coal, and an estimated equivalent electrical efficiency of 60%. The Phase I R&D program will determine the operating conditions that maximize separation of CO{sub 2} and pollutants from the vent gas, while simultaneously maximizing coal conversion efficiency and hydrogen production. The program integrates lab-, bench- and pilot-scale studies to demonstrate the UFP technology. This is the tenth quarterly technical progress report for the Vision 21 UFP program supported by U.S. DOE NETL (Contract No. DE-FC26-00FT40974). This report summarizes program accomplishments for the period starting January 1, 2003 and ending March 31, 2003. The report includes an introduction summarizing the UFP technology, main program tasks, and program objectives; it also provides a summary of program activities and accomplishments covering progress in tasks including lab-scale experimental testing, pilot-scale assembly, and program management.

George Rizeq; Janice West; Arnaldo Frydman; Raul Subia; Vladimir Zamansky; Hana Loreth; Lubor Stonawski; Tomasz Wiltowski; Edwin Hippo; Shashi Lalvani

2003-04-01T23:59:59.000Z

185

FUEL-FLEXIBLE GASIFICATION-COMBUSTION TECHNOLOGY FOR PRODUCTION OF H2 AND SEQUESTRATION-READY CO2  

SciTech Connect (OSTI)

It is expected that in the 21st century the Nation will continue to rely on fossil fuels for electricity, transportation, and chemicals. It will be necessary to improve both the process efficiency and environmental impact performance of fossil fuel utilization. GE Energy and Environmental Research Corporation (GE EER) has developed an innovative fuel-flexible Unmixed Fuel Processor (UFP) technology to produce H{sub 2}, power, and sequestration-ready CO{sub 2} from coal and other solid fuels. The UFP module offers the potential for reduced cost, increased process efficiency relative to conventional gasification and combustion systems, and near-zero pollutant emissions including NO{sub x}. GE EER was awarded a Vision 21 program from U.S. DOE NETL to develop the UFP technology. Work on this Phase I program started on October 1, 2000. The project team includes GE EER, California Energy Commission, Southern Illinois University at Carbondale, and T. R. Miles, Technical Consultants, Inc. In the UFP technology, coal/opportunity fuels and air are simultaneously converted into separate streams of (1) pure hydrogen that can be utilized in fuel cells, (2) sequestration-ready CO{sub 2}, and (3) high temperature/pressure oxygen-depleted air to produce electricity in a gas turbine. The process produces near-zero emissions and, based on process modeling work, has an estimated process efficiency of 68%, based on electrical and H{sub 2} energy outputs relative to the higher heating value of coal, and an estimated equivalent electrical efficiency of 60%. The Phase I R&D program will determine the operating conditions that maximize separation of CO{sub 2} and pollutants from the vent gas, while simultaneously maximizing coal conversion efficiency and hydrogen production. The program integrates lab-, bench- and pilot-scale studies to demonstrate the UFP technology. This is the ninth quarterly technical progress report for the Vision 21 UFP program supported by U.S. DOE NETL (Contract No. DE-FC26-00FT40974). This report summarizes program accomplishments for the period starting October 1, 2002 and ending December 31, 2002. The report includes an introduction summarizing the UFP technology, main program tasks, and program objectives; it also provides a summary of program activities and accomplishments covering progress in tasks including lab- and bench-scale experimental testing, pilot-scale design and assembly, and program management.

George Rizeq; Janice West; Arnaldo Frydman; Raul Subia; Vladimir Zamansky; Hana Loreth; Lubor Stonawski; Tomasz Wiltowski; Edwin Hippo; Shashi Lalvani

2003-01-01T23:59:59.000Z

186

FUEL-FLEXIBLE GASIFICATION-COMBUSTION TECHNOLOGY FOR PRODUCTION OF H2 AND SEQUESTRATION-READY CO2  

SciTech Connect (OSTI)

It is expected that in the 21st century the Nation will continue to rely on fossil fuels for electricity, transportation, and chemicals. It will be necessary to improve both the thermodynamic efficiency and environmental impact performance of fossil fuel utilization. GE Energy and Environmental Research Corporation (GE EER) has developed an innovative fuel-flexible Advanced Gasification-Combustion (AGC) concept to produce H{sub 2} and sequestration-ready CO{sub 2} from solid fuels. The AGC module offers potential for reduced cost and increased energy efficiency relative to conventional gasification and combustion systems. GE EER was awarded a Vision 21 program from U.S. DOE NETL to develop the AGC technology. Work on this three-year program started on October 1, 2000. The project team includes GE EER, California Energy Commission, Southern Illinois University at Carbondale, and T. R. Miles, Technical Consultants, Inc. In the AGC technology, coal/opportunity fuels and air are simultaneously converted into separate streams of (1) pure hydrogen that can be utilized in fuel cells, (2) sequestration-ready CO{sub 2}, and (3) high temperature/pressure oxygen-depleted air to produce electricity in a gas turbine. The process produces near-zero emissions and, based on preliminary modeling work, has an estimated process efficiency of approximately 67% based on electrical and H{sub 2} energy outputs relative to the higher heating value of coal. The three-year R&D program will determine the operating conditions that maximize separation of CO{sub 2} and pollutants from the vent gas, while simultaneously maximizing coal conversion efficiency and hydrogen production. The program integrates lab-, bench- and pilot-scale studies to demonstrate the AGC concept. This is the second annual technical progress report for the Vision 21 AGC program supported by U.S. DOE NETL (Contract No. DE-FC26-00FT40974). This report summarizes program accomplishments for the period starting October 1, 2001 and ending September 30, 2002. The report includes an introduction summarizing the AGC concept, main program tasks, and program objectives; it also provides a summary of program activities and accomplishments covering progress in tasks including lab- and bench-scale experimental testing, pilot-scale design and assembly, and program management.

George Rizeq; Janice West; Arnaldo Frydman; Raul Subia; Vladimir Zamansky; Hana Loreth; Lubor Stonawski; Tomasz Wiltowski; Edwin Hippo; Shashi Lalvani

2002-10-01T23:59:59.000Z

187

FUEL-FLEXIBLE GASIFICATION-COMBUSTION TECHNOLOGY FOR PRODUCTION OF H2 AND SEQUESTRATION-READY CO2  

SciTech Connect (OSTI)

It is expected that in the 21st century the Nation will continue to rely on fossil fuels for electricity, transportation, and chemicals. It will be necessary to improve both the process efficiency and environmental impact performance of fossil fuel utilization. GE Global Research (GEGR) has developed an innovative fuel-flexible Unmixed Fuel Processor (UFP) technology to produce H{sub 2}, power, and sequestration-ready CO{sub 2} from coal and other solid fuels. The UFP module offers the potential for reduced cost, increased process efficiency relative to conventional gasification and combustion systems, and near-zero pollutant emissions including NO{sub x}. GEGR (prime contractor) was awarded a Vision 21 program from U.S. DOE NETL to develop the UFP technology. Work on this Phase I program started on October 1, 2000. The project team includes GEGR, Southern Illinois University at Carbondale (SIU-C), California Energy Commission (CEC), and T. R. Miles, Technical Consultants, Inc. In the UFP technology, coal/opportunity fuels and air are simultaneously converted into separate streams of (1) pure hydrogen that can be utilized in fuel cells, (2) sequestration-ready CO{sub 2}, and (3) high temperature/pressure oxygen-depleted air to produce electricity in a gas turbine. The process produces near-zero emissions and, based on process modeling with best-case scenario assumptions, has an estimated process efficiency of 68%, based on electrical and H{sub 2} energy outputs relative to the higher heating value of coal, and an estimated equivalent electrical efficiency of 60%. The Phase I R&D program will determine the operating conditions that maximize separation of CO{sub 2} and pollutants from the vent gas, while simultaneously maximizing coal conversion efficiency and hydrogen production. The program integrates lab-, bench- and pilot-scale studies to demonstrate the UFP technology. This is the eleventh quarterly technical progress report for the Vision 21 UFP program supported by U.S. DOE NETL (Contract No. DE-FC26-00FT40974). This report summarizes program accomplishments for the period starting April 1, 2003 and ending June 30, 2003. The report includes an introduction summarizing the UFP technology, main program tasks, and program objectives; it also provides a summary of program activities and accomplishments covering progress in tasks including lab-scale experimental testing, pilot-scale assembly, and program management.

George Rizeq; Janice West; Arnaldo Frydman; Raul Subia; Vladimir Zamansky; Hana Loreth; Lubor Stonawski; Tomasz Wiltowski; Edwin Hippo; Shashi Lalvani

2003-07-01T23:59:59.000Z

188

FUEL-FLEXIBLE GASIFICATION-COMBUSTION TECHNOLOGY FOR PRODUCTION OF H2 AND SEQUESTRATION-READY CO2  

SciTech Connect (OSTI)

It is expected that in the 21st century the Nation will continue to rely on fossil fuels for electricity, transportation, and chemicals. It will be necessary to improve both the thermodynamic efficiency and environmental impact performance of fossil fuel utilization. General Electric Energy and Environmental Research Corporation (GE EER) has developed an innovative fuel-flexible Advanced Gasification-Combustion (AGC) concept to produce H{sub 2} and sequestration-ready CO{sub 2} from solid fuels. The AGC module offers potential for reduced cost and increased energy efficiency relative to conventional gasification and combustion systems. GE EER was awarded a Vision-21 program from U.S. DOE NETL to develop the AGC technology. Work on this three-year program started on October 1, 2000. The project team includes GE EER, California Energy Commission, Southern Illinois University at Carbondale, and T. R. Miles, Technical Consultants, Inc. In the AGC technology, coal/opportunity fuels and air are simultaneously converted into separate streams of (1) pure hydrogen that can be utilized in fuel cells, (2) sequestration-ready CO{sub 2}, and (3) high temperature/pressure oxygen-depleted air to produce electricity in a gas turbine. The process produces near-zero emissions and, based on preliminary modeling work in the first quarter of this program, has an estimated process efficiency of approximately 67% based on electrical and H{sub 2} energy outputs relative to the higher heating value of coal. The three-year R&D program will determine the operating conditions that maximize separation of CO{sub 2} and pollutants from the vent gas, while simultaneously maximizing coal conversion efficiency and hydrogen production. The program integrates lab-, bench- and pilot-scale studies to demonstrate the AGC concept. This is the fifth quarterly technical progress report for the Vision-21 AGC program supported by U.S. DOE NETL (Contract: DE-FC26-00FT40974). This report summarizes program accomplishments for the period starting October 1, 2001 and ending December 31, 2001. The report includes an introduction summarizing the AGC concept, main program tasks, and program objectives; it also provides a summary of program activities covering program management and progress in tasks including lab- and bench-scale experimental testing, pilot-scale design, and economic studies.

George Rizeq; Janice West; Arnaldo Frydman; Raul Subia; Vladimir Zamansky; Tomasz Wiltowski; Tom Miles; Bruce Springsteen

2002-01-01T23:59:59.000Z

189

Analysis of Membrane and Adsorbent Processes for Warm Syngas Cleanup in Integrated Gasification Combined-Cycle Power with CO2 Capture and Sequestration  

Science Journals Connector (OSTI)

Analysis of Membrane and Adsorbent Processes for Warm Syngas Cleanup in Integrated Gasification Combined-Cycle Power with CO2 Capture and Sequestration ... The clean syngas is diluted with N2 from the ASU and enters the gas turbine burner. ... The amount of N2 diluent to be added is determined by the requirement of maintaining the appropriate lower heating value of the syngas feeding into the gas turbine burner to achieve sufficiently low NOx emissions (15–35 ppmv at 15% O2)(36) and to keep the temperature of the gas low enough to avoid blade failure. ...

David J. Couling; Kshitij Prakash; William H. Green

2011-08-11T23:59:59.000Z

190

Environmental Impact Evaluation of Conventional Fossil Fuel Production (Oil and Natural Gas) and Enhanced Resource Recovery with Potential CO2 Sequestration  

Science Journals Connector (OSTI)

The first set of results presented were the inventory of air emissions (CO, CO2, CH4, SOx, NOx, NH3, Pb, Hg, etc.), wastewater-containing acids and sulfides, and solid wastes released because of both fossil fuel production and energy usage from the power plant. ... Gases of SO2 and NOx are reported to pollute the air because of conventional oil production activities,16 but these contributions, as displayed by cases I and II, are less compared to the accumulated impacts coming from the CO2 sequestration chain. ... (1)?McKee, B. Solutions for the 21st Century:? Zero Emissions Technology for Fossil Fuels; Technology Status Report, International Energy Agency, Committee for Energy Research Technology, OECD/IEA:? France, 2002. ...

Hsien H. Khoo; Reginald B. H. Tan

2006-07-26T23:59:59.000Z

191

Data Assimilation Tools for CO2 Reservoir Model Development – A Review of Key Data Types, Analyses, and Selected Software  

SciTech Connect (OSTI)

Pacific Northwest National Laboratory (PNNL) has embarked on an initiative to develop world-class capabilities for performing experimental and computational analyses associated with geologic sequestration of carbon dioxide. The ultimate goal of this initiative is to provide science-based solutions for helping to mitigate the adverse effects of greenhouse gas emissions. This Laboratory-Directed Research and Development (LDRD) initiative currently has two primary focus areas—advanced experimental methods and computational analysis. The experimental methods focus area involves the development of new experimental capabilities, supported in part by the U.S. Department of Energy’s (DOE) Environmental Molecular Science Laboratory (EMSL) housed at PNNL, for quantifying mineral reaction kinetics with CO2 under high temperature and pressure (supercritical) conditions. The computational analysis focus area involves numerical simulation of coupled, multi-scale processes associated with CO2 sequestration in geologic media, and the development of software to facilitate building and parameterizing conceptual and numerical models of subsurface reservoirs that represent geologic repositories for injected CO2. This report describes work in support of the computational analysis focus area. The computational analysis focus area currently consists of several collaborative research projects. These are all geared towards the development and application of conceptual and numerical models for geologic sequestration of CO2. The software being developed for this focus area is referred to as the Geologic Sequestration Software Suite or GS3. A wiki-based software framework is being developed to support GS3. This report summarizes work performed in FY09 on one of the LDRD projects in the computational analysis focus area. The title of this project is Data Assimilation Tools for CO2 Reservoir Model Development. Some key objectives of this project in FY09 were to assess the current state-of-the-art in reservoir model development, the data types and analyses that need to be performed in order to develop and parameterize credible and robust reservoir simulation models, and to review existing software that is applicable to these analyses. This report describes this effort and highlights areas in which additional software development, wiki application extensions, or related GS3 infrastructure development may be warranted.

Rockhold, Mark L.; Sullivan, E. C.; Murray, Christopher J.; Last, George V.; Black, Gary D.

2009-09-30T23:59:59.000Z

192

Carbon Sequestration  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

andrea Mcnemar andrea Mcnemar National Energy Technology Laboratory 3610 Collins Ferry Road P.O. Box 880 Morgantown, WV 26507-0880 304-285-2024 andrea.mcnemar@netl.doe.gov Gregory J. Elbring Principal Investigator Sandia National Laboratory P.O. Box 5800 Albuquerque, NM 87185 505-844-4904 gjelbri@sandia.gov GeoloGic SequeStration of carbon DioxiDe in a DepleteD oil reServoir: a comprehenSive moDelinG anD Site monitorinG project Background The use of carbon dioxide (CO 2 ) to enhance oil recovery (EOR) is a familiar and frequently used technique in the United States. The oil and gas industry has significant experience with well drilling and injecting CO 2 into oil-bearing formations to enhance production. While using similar techniques as in oil production, this sequestration field

193

CO2 exposure at pressure impacts metabolism and stress responses in the model sulfate-reducing bacterium Desulfovibrio vulgaris strain Hildenborough  

SciTech Connect (OSTI)

Geologic carbon dioxide (CO2) sequestration drives physical and geochemical changes in deep subsurface environments that impact indigenous microbial activities. The combined effects of pressurized CO2 on a model sulfate-reducing microorganism, Desulfovibrio vulgaris, have been assessed using a suite of genomic and kinetic measurements. Novel high-pressure NMR time-series measurements using 13C-lactate were used to track D. vulgaris metabolism. We identified cessation of respiration at CO2 pressures of 10 bar, 25 bar, 50 bar, and 80 bar. Concurrent experiments using N2 as the pressurizing phase had no negative effect on microbial respiration, as inferred from reduction of sulfate to sulfide. Complementary pressurized batch incubations and fluorescence microscopy measurements supported NMR observations, and indicated that non-respiring cells were mostly viable at 50 bar CO2 for at least four hours, and at 80 bar CO2 for two hours. The fraction of dead cells increased rapidly after four hours at 80 bar CO2. Transcriptomic (RNA-Seq) measurements on mRNA transcripts from CO2-incubated biomass indicated that cells up-regulated the production of certain amino acids (leucine, isoleucine) following CO2 exposure at elevated pressures, likely as part of a general stress response. Evidence for other poorly understood stress responses were also identified within RNA-Seq data, suggesting that while pressurized CO2 severely limits the growth and respiration of D. vulgaris cells, biomass retains intact cell membranes at pressures up to 80 bar CO2. Together, these data show that geologic sequestration of CO2 may have significant impacts on rates of sulfate reduction in many deep subsurface environments where this metabolism is a key respiratory process.

Wilkins, Michael J.; Hoyt, David W.; Marshall, Matthew J.; Alderson, Paul A.; Plymale, Andrew E.; Markillie, Lye Meng; Tucker, Abigail E.; Walter, Eric D.; Linggi, Bryan E.; Dohnalkova, Alice; Taylor, Ronald C.

2014-09-01T23:59:59.000Z

194

An Improved Model To Forecast Co2 Leakage Rates Along A Wellbore | Open  

Open Energy Info (EERE)

Model To Forecast Co2 Leakage Rates Along A Wellbore Model To Forecast Co2 Leakage Rates Along A Wellbore Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: An Improved Model To Forecast Co2 Leakage Rates Along A Wellbore Details Activities (0) Areas (0) Regions (0) Abstract: Large-scale geological storage of CO2 is likely to bring CO2 plumes into contact with a large number of existing wellbores. Wellbores that no longer provide proper zonal isolation establish a primary pathway for a buoyant CO2-rich phase to escape from the intended storage formation. The hazard of CO2 leakage along these pathways will depend on the rate of leakage. Thus a useful component of a risk assessment framework is a model of CO2 leakage. Predicting the flux of CO2 along a leaking wellbore requires a model of fluid properties and of transport along the leakage

195

Geological Sequestration Training and Research Program in Capture and Transport: Development of the Most Economical Separation Method for CO2 Capture  

SciTech Connect (OSTI)

The project provided hands-on training and networking opportunities to undergraduate students in the area of carbon dioxide (CO2) capture and transport, through fundamental research study focused on advanced separation methods that can be applied to the capture of CO2 resulting from the combustion of fossil-fuels for power generation . The project team’s approach to achieve its objectives was to leverage existing Carbon Capture and Storage (CCS) course materials and teaching methods to create and implement an annual CCS short course for the Tuskegee University community; conduct a survey of CO2 separation and capture methods; utilize data to verify and develop computer models for CO2 capture and build CCS networks and hands-on training experiences. The objectives accomplished as a result of this project were: (1) A comprehensive survey of CO2 capture methods was conducted and mathematical models were developed to compare the potential economics of the different methods based on the total cost per year per unit of CO2 avoidance; and (2) Training was provided to introduce the latest CO2 capture technologies and deployment issues to the university community.

Vahdat, Nader

2013-09-30T23:59:59.000Z

196

Methanol Synthesis from CO2 Hydrogenation over a Pd4/In2O3 Model...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Methanol Synthesis from CO2 Hydrogenation over a Pd4In2O3 Model Catalyst: A Combined DFT and Kinetic Study. Methanol Synthesis from CO2 Hydrogenation over a Pd4In2O3 Model...

197

CO2 Capture from Coal-Fired Utility Generation Plant Exhausts and Sequestration by a Biomimetic Route Based on Enzymatic Catalysts-Current Status  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

from Coal-Fired Utility Generation Plant Exhausts, and from Coal-Fired Utility Generation Plant Exhausts, and Sequestration by a Biomimetic Route Based on Enzymatic Catalysis - Current Status Gillian M. Bond (gbond@nmt.edu; 505-835-5653) Margaret-Gail Medina (magail@nmt.edu; 505-835-5229) New Mexico Tech 801 Leroy Socorro, NM 87801 John Stringer (jstringe@epri.com; 650-855-2472) Electric Power Research Institute 3412 Hillview Avenue Palo Alto, CA 94304 F. Arzum Simsek-Ege (fatma.a.simsek-egel@intel.com; 505-893-8694) Intel Corporation Albuquerque, New Mexico Introduction A range of carbon management strategies will have to be implemented if meaningful reductions in CO 2 emissions are to be achieved in response to concerns about global climate change. It is becoming increasingly clear that some form or forms of carbon

198

The influence of deep-seabed CO2 sequestration on small metazoan (meiofaunal) viability and community structure: final technical report  

SciTech Connect (OSTI)

Since the industrial revolution, the burning of fossil fuel has produced carbon dioxide at an increasing rate. Present atmospheric concentration is about ~1.5 times the preindustrial level and is rising. Because carbon dioxide is a greenhouse gas, its increased concentration in the atmosphere is thought to be a cause of global warming. If so, the rate of global warming could be slowed if industrial carbon dioxide were not released into the atmosphere. One suggestion has been to sequester it in the deep ocean, but theory predicts that deep-sea species will be intolerant of the increased concentrations of carbon dioxide and the increased acidity it would cause. The aim of our research was to test for consequences of carbon dioxide sequestration on deep-sea, sediment-dwelling meiofauna. Recent technical advances allowed us to test for effects in situ at depths proposed for sequestration. The basic experimental unit was an open-topped container into which we pumped ~20 L of liquid carbon dioxide. The liquid carbon dioxide mixed with near-bottom sea water, which produced carbon dioxide-rich sea water that flowed out over the near-by seabed. We did 30-day experiments at several locations and with different numbers of carbon dioxide-filled containers. Harpacticoid copepods (Crustacea) were our test taxon. In an experiment we did during a previous grant period, we found that large numbers of individuals exposed to carbon dioxide-rich sea water had been killed (Thistle et al. 2004). During the present grant period, we analyzed the species-level data in greater detail and discovered that, although individuals of many species had been killed by exposure to carbon dioxide-rich sea water, individuals of some species had not (Thistle et al. 2005). This result suggests that seabed sequestration of carbon dioxide will not just reduce the abundance of the meiofauna but will change the composition of the community. In another experiment, we found that some harpacticoid species swim away from an advancing front of carbon dioxide-rich sea water (Thistle et al. 2007). This result demonstrates a second way that deep-sea meiofauna react negatively to carbon dioxide-rich sea water. In summary, we used in situ experiments to show that carbon dioxide-rich sea water triggers an escape response in some harpacticoid species. It kills most individuals of most harpacticoid species that do not flee, but a few species seem to be unaffected. Proposals to reduce global warming by sequestering industrial carbon dioxide in the deep ocean should take note of these environmental consequences when pros and cons are weighed.

Thistle, D

2008-09-30T23:59:59.000Z

199

Microsoft Word - SECARB Phase III CO2 sequestration Final EA MNM 3-2 as sent.doc  

Broader source: Energy.gov (indexed) [DOE]

25 25 FINAL ENVIRONMENTAL ASSESSMENT Southeast Regional Carbon Sequestration Partnership (SECARB) Phase III Early Test March 2009 U.S. DEPARTMENT OF ENERGY NATIONAL ENERGY TECHNOLOGY LABORATORY U.S. Department of Energy SECARB Phase III Early Test National Energy Technology Laboratory Final Environmental Assessment ______________________________________________________________________________ Table of Contents i March 2009 TABLE OF CONTENTS TABLE OF CONTENTS i LIST OF TABLES iv LIST OF FIGURES iv ACRONYMS AND ABBREVIATIONS v USE OF SCIENTIFIC NOTATION ix 1.0 INTRODUCTION 1 1.1 Summary 1 1.2 Purpose and Need 5 1.3 Legal Framework 8 2.0 PROPOSED ACTION AND ALTERNATIVES 15 2.1 Proposed Action 15 2.1.1 Project Location 15

200

Underground reconnaissance and environmental monitoring related to geologic CO2 sequestration studies at the DUSEL Facility, Homestake Mine, South Dakota  

SciTech Connect (OSTI)

Underground field reconnaissance was carried out in the Deep Underground Science and Engineering Laboratory (DUSEL) to identify potential locations for the planned geologic carbon sequestration experimental facility known as DUSEL CO{sub 2}. In addition, instrumentation for continuous environmental monitoring of temperature, pressure, and relative humidity was installed at various locations within the Homestake mine. The motivation for this work is the need to locate and design the DUSEL CO{sub 2} facility currently being planned to host CO{sub 2} and water flow and reaction experiments in long column pressure vessels over large vertical length scales. Review of existing geologic data and reconnaissance underground revealed numerous potential locations for vertical experimental flow columns, with limitations of existing vertical boreholes arising from limited vertical extent, poor continuity between drifts, and small diameter. Results from environmental monitoring over 46 days reveal spatial and temporal variations related to ventilation, weather, and ongoing dewatering of the mine.

Dobson, Patrick F.; Salve, Rohit

2009-11-20T23:59:59.000Z

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201

A dynamic model for optimally phasing in CO2 capture and storage infrastructure  

Science Journals Connector (OSTI)

CO"2 capture and storage (CCS) is a climate-change mitigation strategy that requires an investment of many billions of dollars and tens of thousands of miles of dedicated CO"2 pipelines. To be effective, scientists, stakeholders, and policy makers will ... Keywords: CO2 capture and storage, Climate-change policy, Infrastructure modeling, Pipeline modeling, SimCCS, Spatiotemporal optimization

Richard S. Middleton; Michael J. Kuby; Ran Wei; Gordon N. Keating; Rajesh J. Pawar

2012-11-01T23:59:59.000Z

202

Modeling supercritical CO2 injection in heterogeneous porous media  

SciTech Connect (OSTI)

We investigate the physical processes that occur during the sequestration of CO{sub 2} in brine-bearing geologic formations using TOUGH2. An equation of state package that treats a two-phase (liquid, gas), three-component (water, salt, and CO{sub 2}) system is employed. CO{sub 2} is injected in a supercritical state that has a much lower density and viscosity than the liquid brine it displaces. In situ, the supercritical CO{sub 2} forms a gas-like phase, and also partially dissolves in the aqueous phase. Chemical reactions between CO{sub 2} and rock minerals that could potentially contribute to mineral trapping of CO{sub 2} are not included. The geological setting considered is a fluvial/deltaic formation that is strongly heterogeneous, making preferential flow a significant effect, especially when coupled with the strong buoyancy forces acting on the gas-like CO{sub 2} plume. Key model development concerns include vertical and lateral grid resolution, grid orientation effects, and the choice of characteristic curves.

Doughty, Christine; Pruess, Karsten

2003-04-10T23:59:59.000Z

203

Fuel-Flexible Gasification-Combustion Technology for Production of H2 and Sequestration-Ready CO2  

SciTech Connect (OSTI)

In the near future, the nation will continue to rely on fossil fuels for electricity, transportation, and chemicals. It is necessary to improve both the process efficiency and environmental impact of fossil fuel utilization including greenhouse gas management. GE Global Research (GEGR) investigated an innovative fuel-flexible Unmixed Fuel Processor (UFP) technology with potential to produce H{sub 2}, power, and sequestration-ready CO{sub 2} from coal and other solid fuels. The UFP technology offers the long-term potential for reduced cost, increased process efficiency relative to conventional gasification and combustion systems, and near-zero pollutant emissions. GE was awarded a contract from U.S. DOE NETL to investigate and develop the UFP technology. Work started on the Phase I program in October 2000 and on the Phase II effort in April 2005. In the UFP technology, coal, water and air are simultaneously converted into (1) hydrogen rich stream that can be utilized in fuel cells or turbines, (2) CO{sub 2} rich stream for sequestration, and (3) high temperature/pressure vitiated air stream to produce electricity in a gas turbine expander. The process produces near-zero emissions with an estimated efficiency higher than Integrated Gasification Combined Cycle (IGCC) process with conventional CO{sub 2} separation. The Phase I R&D program established the chemical feasibility of the major reactions of the integrated UFP technology through lab-, bench- and pilot-scale testing. A risk analysis session was carried out at the end of Phase I effort to identify the major risks in the UFP technology and a plan was developed to mitigate these risks in the Phase II of the program. The Phase II effort focused on three high-risk areas: economics, lifetime of solids used in the UFP process, and product gas quality for turbines (or the impact of impurities in the coal on the overall system). The economic analysis included estimating the capital cost as well as the costs of hydrogen and electricity for a full-scale UFP plant. These costs were benchmarked with IGCC polygen plants with similar level of CO{sub 2} capture. Based on the promising economic analysis comparison results (performed with the help from Worley Parsons), GE recommended a 'Go' decision in April 2006 to continue the experimental investigation of the UFP technology to address the remaining risks i.e. solids lifetime and the impact of impurities in the coal on overall system. Solids attrition and lifetime risk was addressed via bench-scale experiments that monitor solids performance over time and by assessing materials interactions at operating conditions. The product gas under the third reactor (high-temperature vitiated air) operating conditions was evaluated to assess the concentration of particulates, pollutants and other impurities relative to the specifications required for gas turbine feed streams. During this investigation, agglomeration of solids used in the UFP process was identified as a serious risk that impacts the lifetime of the solids and in turn feasibility of the UFP technology. The main causes of the solids agglomeration were the combination of oxygen transfer material (OTM) reduction at temperatures {approx}1000 C and interaction between OTM and CO{sub 2} absorbing material (CAM) at high operating temperatures (>1200 C). At the end of phase II, in March 2008, GEGR recommended a 'No-go' decision for taking the UFP technology to the next level of development, i.e. development of a 3-5 MW prototype system, at this time. GEGR further recommended focused materials development research programs on improving the performance and lifetime of solids materials used in UFP or chemical looping technologies. The scale-up activities would be recommended only after mitigating the risks involved with the agglomeration and overall lifetime of the solids. This is the final report for the phase II of the DOE-funded Vision 21 program entitled 'Fuel-Flexible Gasification-Combustion Technology for Production of H{sub 2} and Sequestration-Ready CO{sub 2}' (DOE Award No.

Parag Kulkarni; Jie Guan; Raul Subia; Zhe Cui; Jeff Manke; Arnaldo Frydman; Wei Wei; Roger Shisler; Raul Ayala; om McNulty; George Rizeq; Vladimir Zamansky; Kelly Fletcher

2008-03-31T23:59:59.000Z

204

Pore-Level Modeling of Carbon Dioxide Sequestration in Brine Fields  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Pore-Level Modeling of Carbon Dioxide Sequestration in Brine Fields Pore-Level Modeling of Carbon Dioxide Sequestration in Brine Fields M. Ferer, (mferer@wvu.edu) Department of Physics, West Virginia University, Morgantown, WV 26506-6315, Grant S. Bromhal, (bromhal@netl.doe.gov) US DOE, National Energy Technology Laboratory, Morgantown, WV 26507-0880; and Duane H. Smith, (dsmith@netl.doe.gov) US DOE, National Energy Technology Laboratory, Morgantown, WV 26507-0880 & Department of Physics, West Virginia University. Underground injection of gas is a common practice in the oil and gas industry. Injection into deep, brine-saturated formations is a commercially proven method of sequestering CO 2 . However, it has long been known that displacement of a connate fluid by a less viscous fluid produces unstable displacement fronts with significant fingering. This fingering allows only a

205

CO2 interaction with geomaterials.  

SciTech Connect (OSTI)

This work compares the sorption and swelling processes associated with CO2-coal and CO2-clay interactions. We investigated the mechanisms of interaction related to CO2 adsortion in micropores, intercalation into sub-micropores, dissolution in solid matrix, the role of water, and the associated changes in reservoir permeability, for applications in CO2 sequestration and enhanced coal bed methane recovery. The structural changes caused by CO2 have been investigated. A high-pressure micro-dilatometer was equipped to investigate the effect of CO2 pressure on the thermoplastic properties of coal. Using an identical dilatometer, Rashid Khan (1985) performed experiments with CO2 that revealed a dramatic reduction in the softening temperature of coal when exposed to high-pressure CO2. A set of experiments was designed for -20+45-mesh samples of Argonne Premium Pocahontas No.3 coal, which is similar in proximate and ultimate analysis to the Lower Kittanning seam coal that Khan used in his experiments. No dramatic decrease in coal softening temperature has been observed in high-pressure CO2 that would corroborate the prior work of Khan. Thus, conventional polymer (or 'geopolymer') theories may not be directly applicable to CO2 interaction with coals. Clays are similar to coals in that they represent abundant geomaterials with well-developed microporous structure. We evaluated the CO2 sequestration potential of clays relative to coals and investigated the factors that affect the sorption capacity, rates, and permanence of CO2 trapping. For the geomaterials comparison studies, we used source clay samples from The Clay Minerals Society. Preliminary results showed that expandable clays have CO2 sorption capacities comparable to those of coal. We analyzed sorption isotherms, XRD, DRIFTS (infrared reflectance spectra at non-ambient conditions), and TGA-MS (thermal gravimetric analysis) data to compare the effects of various factors on CO2 trapping. In montmorillonite, CO2 molecules may remain trapped for several months following several hours of exposure to high pressure (supercritical conditions), high temperature (above boiling point of water) or both. Such trapping is well preserved in either inert gas or the ambient environment and appears to eventually result in carbonate formation. We performed computer simulations of CO2 interaction with free cations (normal modes of CO2 and Na+CO2 were calculated using B3LYP / aug-cc-pVDZ and MP2 / aug-cc-pVDZ methods) and with clay structures containing interlayer cations (MD simulations with Clayff potentials for clay and a modified CO2 potential). Additionally, interaction of CO2 with hydrated Na-montmorillonite was studied using density functional theory with dispersion corrections. The sorption energies and the swelling behavior were investigated. Preliminary modeling results and experimental observations indicate that the presence of water molecules in the interlayer region is necessary for intercalation of CO2. Our preliminary conclusion is that CO2 molecules may intercalate into interlayer region of swelling clay and stay there via coordination to the interlayer cations.

Guthrie, George D. (U.S. Department of Energy, Pittsburgh, PA); Al-Saidi, Wissam A. (University of Pittsburgh, Pittsburgh, PA); Jordan, Kenneth D. (University of Pittsburgh, Pittsburgh, PA); Voora, Vamsee, K. (University of Pittsburgh, Pittsburgh, PA); Romanov, Vyacheslav N. (U.S. Department of Energy, Pittsburgh, PA); Lopano, Christina L (U.S. Department of Energy, Pittsburgh, PA); Myshakin, Eugene M. (URS Corporation, Pittsburgh, PA); Hur, Tae Bong (University of Pittsburgh, Pittsburgh, PA); Warzinski, Robert P. (U.S. Department of Energy, Pittsburgh, PA); Lynn, Ronald J. (URS Corporation, Pittsburgh, PA); Howard, Bret H. (U.S. Department of Energy, Pittsburgh, PA); Cygan, Randall Timothy

2010-09-01T23:59:59.000Z

206

A Finite-Element Model for Simulation of Carbon Dioxide Sequestration  

SciTech Connect (OSTI)

Herein, we present a coupled thermal-hydro-mechanical model for geological sequestration of carbon dioxide followed by the stress, deformation, and shear-slip failure analysis. This fully coupled model considers the geomechanical response, fluid flow, and thermal transport relevant to geological sequestration. Both analytical solutions and numerical approach via finite element model are introduced for solving the thermal-hydro-mechanical model. Analytical solutions for pressure, temperature, deformation, and stress field were obtained for a simplified typical geological sequestration scenario. The finite element model is more general and can be used for arbitrary geometry. It was built on an open-source finite element code, Elmer, and was designed to simulate the entire period of CO2 injection (up to decades) both stably and accurately—even for large time steps. The shear-slip failure analysis was implemented based on the numerical results from the finite element model. The analysis reveals the potential failure zone caused by the fluid injection and thermal effect. From the simulation results, the thermal effect is shown to enhance well injectivity, especially at the early time of the injection. However, it also causes some side effects, such as the appearance of a small failure zone in the caprock. The coupled thermal-hydro-mechanical model improves prediction of displacement, stress distribution, and potential failure zone compared to the model that neglects non-isothermal effects, especially in an area with high geothermal gradient.

Bao, Jie; Xu, Zhijie; Fang, Yilin

2014-09-01T23:59:59.000Z

207

W.A. Parish Post-Combustion CO2 Capture and Sequestration Project, Final Environmental Impact Statement (DOE/EIS-0473)  

Broader source: Energy.gov (indexed) [DOE]

NRG W.A. PARISH PCCS PROJECT NRG W.A. PARISH PCCS PROJECT FINAL ENVIRONMENTAL IMPACT STATEMENT APPENDIX H. BEG MODELING REPORT APPENDIX H BEG MODELING REPORT DOE/EIS-0473 NRG W.A. PARISH PCCS PROJECT FINAL ENVIRONMENTAL IMPACT STATEMENT APPENDIX H. BEG MODELING REPORT INTENTIONALLY LEFT BLANK 1 Reservoir modeling and simulation for estimating migration extents of injectate-CO 2 in support of West Ranch oilfield NEPA/EIS Gulf Coast Carbon Center, Bureau of Economic Geology, Jackson School of Geosciences, The University of Texas at Austin May 4, 2012 Summary It is anticipated that anthropogenic carbon dioxide (CO2-A) will be injected into the deep (5,000-6,000 ft below sea level) subsurface for enhanced oil recovery (EOR) at the West Ranch oilfield beginning in early 2015. The purpose of this report is to present reservoir modeling and simulation

208

Dispersion of Light and Heavy Pollutants in Urban Scale Models: CO2 Laser Photoacoustic Studies  

Science Journals Connector (OSTI)

The distribution of pollutants in two urban scale models (point emission source and street canyon with extensive transport) was investigated by means of CO2 laser...

Zelinger, Z; Strižík, M; Kubát, P; Civiš, S; Grigorová, E; Jane?ková, R; Zavila, O; Nevrlý, V; Herecová, L; Bailleux, S; Horká, V; Ferus, M; Skrínský, J; Kozubková, M; Drábková, S; Janour, Z

2009-01-01T23:59:59.000Z

209

Semi-analytical model of brine and CO2 leakage through an abandoned plugged well. Applications for determining an Area of Review and CO2 leakage rate  

E-Print Network [OSTI]

Semi-analytical model of brine and CO2 leakage through an abandoned plugged well. Applications for determining an Area of Review and CO2 leakage rate Arnaud Réveillère, Jérémy Rohmer, Frédéric Wertz / contact the leak, and of CO2,g as a first approach. Compared to the state of the art, it adds the possibility

Paris-Sud XI, Université de

210

Implementations of a Flexible Framework for Managing Geologic Sequestration Modeling Projects  

SciTech Connect (OSTI)

Numerical simulation is a standard practice used to support designing, operating, and monitoring CO2 injection projects. Although a variety of computational tools have been developed that support the numerical simulation process, many are single-purpose or platform specific and have a prescribed workflow that may or may not be suitable for a particular project. We are developing an open-source, flexible framework named Velo that provides a knowledge management infrastructure and tools to support modeling and simulation for various types of projects in a number of scientific domains. The Geologic Sequestration Software Suite (GS3) is a version of this framework with features and tools specifically tailored for geologic sequestration studies. Because of its general nature, GS3 is being employed in a variety of ways on projects with differing goals. GS3 is being used to support the Sim-SEQ international model comparison study, by providing a collaborative framework for the modeling teams and providing tools for model comparison. Another customized deployment of GS3 has been made to support the permit application process. In this case, GS3 is being used to manage data in support of conceptual model development and provide documentation and provenance for numerical simulations. An additional customized deployment of GS3 is being created for use by the United States Environmental Protection Agency (US-EPA) to aid in the CO2 injection permit application review process in one of its regions. These use cases demonstrate GS3’s flexibility, utility, and broad applicability

White, Signe K.; Gosink, Luke J.; Sivaramakrishnan, Chandrika; Black, Gary D.; Purohit, Sumit; Bacon, Diana H.; Hou, Zhangshuan; Lin, Guang; Gorton, Ian; Bonneville, Alain

2013-08-06T23:59:59.000Z

211

Long-term effects of anthropogenic CO2 emissions simulated with a complex earth system model  

E-Print Network [OSTI]

Long-term effects of anthropogenic CO2 emissions simulated with a complex earth system model Uwe earth system model con- sisting of an atmospheric general circulation model, an ocean general

Winguth, Arne

212

Modeling Obliquity and CO2 Effects on Southern Hemisphere Climate during the Past 408 ka  

Science Journals Connector (OSTI)

The effect of obliquity and CO2 changes on Southern Hemispheric climate is studied with a series of numerical modeling experiments. Using the Earth system model of intermediate complexity Loch–VECODE–ECBilt–CLIO–Agism Model (LOVECLIM) and a ...

Axel Timmermann; Tobias Friedrich; Oliver Elison Timm; Megumi O. Chikamoto; Ayako Abe-Ouchi; Andrey Ganopolski

2014-03-01T23:59:59.000Z

213

Optimization Model for Energy Planning with CO2 Emission Considerations  

Science Journals Connector (OSTI)

This paper considers the problem of reducing CO2 emissions from a power grid consisting of a variety of power-generating plants:? coal, natural gas, nuclear, hydroelectric, and alternative energy. ... Approximately 28.5% of OPG electricity is produced through the combustion of fossil fuels, 27% through hydroelectricity, and 44% through nuclear energy, and the remaining 0.5% comes from renewable or other energy sources, such as wind turbines. ... A sensitivity analysis was also performed to evaluate the impact of natural gas prices, coal prices, and retrofit costs on the optimal configuration of the OPG fleet of electricity-generating stations. ...

Haslenda Hashim; Peter Douglas; Ali Elkamel; Eric Croiset

2005-01-12T23:59:59.000Z

214

EXPERIMENTAL DESIGN APPLICATIONS FOR MODELING AND ASSESSING CARBON DIOXIDE SEQUESTRATION IN SALINE AQUIFERS  

SciTech Connect (OSTI)

This project was a computer modeling effort to couple reservoir simulation and ED/RSM using Sensitivity Analysis, Uncertainty Analysis, and Optimization Methods, to assess geologic, geochemical, geomechanical, and rock-fluid effects and factors on CO2 injectivity, capacity, and plume migration. The project objective was to develop proxy models to simplify the highly complex coupled geochemical and geomechanical models in the utilization and storage of CO2 in the subsurface. The goals were to investigate and prove the feasibility of the ED/RSM processes and engineering development, and bridge the gaps regarding the uncertainty and unknowns of the many geochemical and geomechanical interacting parameters in the development and operation of anthropogenic CO2 sequestration and storage sites. The bottleneck in this workflow is the high computational effort of reactive transport simulation models and large number of input variables to optimize with ED/RSM techniques. The project was not to develop the reactive transport, geomechanical, or ED/RSM software, but was to use what was commercially and/or publically available as a proof of concept to generate proxy or surrogate models. A detailed geologic and petrographic mineral assemblage and geologic structure of the doubly plunging anticline was defined using the USDOE RMOTC formations of interest data (e.g., Lower Sundance, Crow Mountain, Alcova Limestone, and Red Peak). The assemblage of 23 minerals was primarily developed from literature data and petrophysical (well log) analysis. The assemblage and structure was input into a commercial reactive transport simulator to predict the effects of CO2 injection and complex reactions with the reservoir rock. Significant impediments were encountered during the execution phase of the project. The only known commercial reactive transport simulator was incapable of simulating complex geochemistry modeled in this project. Significant effort and project funding was expended to determine the limitations of both the commercial simulator and the Lawrence Berkeley National Laboratory (LBNL) R&D simulator, TOUGHREACT available to the project. A simplified layer cake model approximating the volume of the RMOTC targeted reservoirs was defined with 1-3 minerals eventually modeled with limited success. Modeling reactive transport in porous media requires significant computational power. In this project, up to 24 processors were used to model a limited mineral set of 1-3 minerals. In addition, geomechanical aspects of injecting CO2 into closed, semi-open, and open systems in various well completion methods was simulated. Enhanced Oil Recovery (EOR) as a storage method was not modeled. A robust and stable simulation dataset or base case was developed and used to create a master dataset with embedded instructions for input to the ED/RSM software. Little success was achieved toward the objective of the project using the commercial simulator or the LBNL simulator versions available during the time of this project. Several hundred realizations were run with the commercial simulator and ED/RSM software, most having convergence problems and terminating prematurely. A proxy model for full field CO2 injection sequestration utilization and storage was not capable of being developed with software available for this project. Though the chemistry is reasonably known and understood, based on the amount of effort and huge computational time required, predicting CO2 sequestration storage capacity in geologic formations to within the program goals of ±30% proved unsuccessful.

Rogers, John

2014-08-31T23:59:59.000Z

215

Uncertainty quantification for evaluating impacts of caprock and reservoir properties on pressure buildup and ground surface displacement during geological CO2 sequestration  

SciTech Connect (OSTI)

A series of numerical test cases reflecting broad and realistic ranges of geological formation properties was developed to systematically evaluate and compare the impacts of those properties on geomechanical responses to CO2 injection. A coupled hydro-geomechanical subsurface transport simulator, STOMP (Subsurface Transport over Multiple Phases), was adopted to simulate the CO2 migration process and geomechanical behaviors of the surrounding geological formations. A quasi-Monte Carlo sampling method was applied to efficiently sample a high-dimensional parameter space consisting of injection rate and 14 subsurface formation properties, including porosity, permeability, entry pressure, irreducible gas and aqueous saturation, Young’s modulus, and Poisson’s ratio for both reservoir and caprock. Generalized cross-validation and analysis of variance methods were used to quantitatively measure the significance of the 15 input parameters. Reservoir porosity, permeability, and injection rate were found to be among the most significant factors affecting the geomechanical responses to the CO2 injection. We used a quadrature generalized linear model to build a reduced-order model that can estimate the geomechanical response instantly instead of running computationally expensive numerical simulations. The injection pressure and ground surface displacement are often monitored for injection well safety, and are believed can partially reflect the risk of fault reactivation and seismicity. Based on the reduced order model and response surface, the input parameters can be screened for control the risk of induced seismicity. The uncertainty of the subsurface structure properties cause the numerical simulation based on a single or a few samples does not accurately estimate the geomechanical response in the actual injection site. Probability of risk can be used to evaluate and predict the risk of injection when there are great uncertainty in the subsurface properties and operation conditions.

Bao, Jie; Hou, Zhangshuan; Fang, Yilin; Ren, Huiying; Lin, Guang

2013-08-12T23:59:59.000Z

216

NETL: CO2 Emissions Control  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Home > Technologies > Coal & Power Systems > Innovations for Existing Plants > CO2 Emissions Control Home > Technologies > Coal & Power Systems > Innovations for Existing Plants > CO2 Emissions Control Innovations for Existing Plants CO2 Emissions Control RD&D Roadmap Technology Update DOE/NETL Advanced CO2 Capture R&D Program: Technology Update DOE/NETL Advanced CO2 Capture R&D Program Accomplishments DOE/NETL Carbon Dioxide Capture and Storage RD&D Roadmap 2013 NETL CO2 Capture Technology Meeting Presentations DOE/NETL's Monthly Carbon Sequestration Newsletter Program Goals and Targets Pre-Combustion CO2 Control Post-Combustion CO2 Control Advanced Combustion CO2 Compression Other Systems Analysis Regulatory Drivers Reference Shelf Carbon capture involves the separation of CO2 from coal-based power plant flue gas or syngas. There are commercially available 1st-Generation CO2

217

NETL: CO2 Compression  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

CO2 Compression CO2 Compression The CO2 captured from a power plant will need to be compressed from near atmospheric pressure to a pressure between 1,500 and 2,200 psi in order to be transported via pipeline and then injected into an underground sequestration site. Read More! CO2 Compression The compression of CO2 represents a potentially large auxiliary power load on the overall power plant system. For example, in an August 2007 study conducted for DOE/NETL, CO2 compression was accomplished using a six-stage centrifugal compressor with interstage cooling that required an auxiliary load of approximately 7.5 percent of the gross power output of a subcritical pressure, coal-fired power plant. As a result, DOE/NETL is sponsoring R&D to develop novel methods that can significantly decrease the

218

Simulation assessment of CO2 sequestration potential and enhanced methane recovery in low-rank coalbeds of the Wilcox Group, east-central Texas  

E-Print Network [OSTI]

Carbon dioxide (CO2) from energy consumption is a primary source of greenhouse gases. Injection of CO2 from power plants in coalbed reservoirs is a plausible method for reducing atmospheric emissions, and it can have the additional benefit...

Hernandez Arciniegas, Gonzalo

2006-10-30T23:59:59.000Z

219

Sequestration Program  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

NETL's NETL's Carbon Capture and Sequestration Program Advances of Multi-pollutant and CO 2 Control Technologies Chicago, IL April 30, 2007 Timothy Fout Project Manager National Energy Technology Laboratory T. Fout, Apr. 2007 Outline for Presentation * NETL Overview * The Issue * The Solutions * What is Carbon Capture and Storage (CCS) * DOE's Sequestration Program Structure * CO 2 Capture Research Projects T. Fout, Apr. 2007 National Energy Technology Laboratory * Only DOE national lab dedicated to fossil energy - Fossil fuels provide 85% of U.S. energy supply * One lab, five locations, one management structure * 1,100 Federal and support-contractor employees * Research spans fundamental science to technology demonstrations West Virginia

220

Legal Implications of CO2 Ocean Storage  

E-Print Network [OSTI]

, ocean currents may prevent stagnation or accumulatioLegal Implications of CO2 Ocean Storage Jason Heinrich Working Paper Laboratory for Energy #12;Introduction Ocean sequestration of CO2, a potentially significant technique to be used

Note: This page contains sample records for the topic "modeling co2 sequestration" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

Modeling Studies on the Transport of Benzene and H2S in CO2-Water Systems  

E-Print Network [OSTI]

interest in subcritical (hot/liquid) water from 298 K to 473subcritical region. Modeling Studies on the Transport of Benzene and H 2 S in CO 2 -Water

Zheng, L.

2011-01-01T23:59:59.000Z

222

An XFEM Model for Carbon Sequestration Journal: International Journal for Numerical Methods in Engineering  

E-Print Network [OSTI]

PeerReview Only An XFEM Model for Carbon Sequestration Journal: International Journal for Numerical method, Carbon Sequestration, Multiphase flow, XFEM, Multifield systems, Petrov-Galerkin httpScience (www.interscience.wiley.com). DOI: 10.1002/nme An XFEM Model for Carbon Sequestration Chris Ladubec

Gracie, Robert

223

ECONOMIC MODELING OF THE GLOBAL ADOPTION OF CARBON CAPTURE AND SEQUESTRATION TECHNOLOGIES  

E-Print Network [OSTI]

ECONOMIC MODELING OF THE GLOBAL ADOPTION OF CARBON CAPTURE AND SEQUESTRATION TECHNOLOGIES J. R. Mc of carbon capture and sequestration technologies as applied to electric generating plants. The MIT Emissions, is used to model carbon capture and sequestration (CCS) technologies based on a natural gas combined cycle

224

Forest cover, carbon sequestration, and wildlife habitat: policy review and modeling of tradeoffs among land-use  

E-Print Network [OSTI]

Forest cover, carbon sequestration, and wildlife habitat: policy review and modeling of tradeoffs and services, including timber production, carbon sequestration and storage, scenic amenities, and wildlife habitat. International efforts to mitigate climate change through forest carbon sequestration

Rissman, Adena

225

Intro to Carbon Sequestration  

ScienceCinema (OSTI)

NETL's Carbon Sequestration Program is helping to develop technologies to capture, purify, and store carbon dioxide (CO2) in order to reduce greenhouse gas emissions without adversely influencing energy use or hindering economic growth. Carbon sequestration technologies capture and store CO2 that would otherwise reside in the atmosphere for long periods of time.

None

2010-01-08T23:59:59.000Z

226

Demonstration of a Novel, Integrated, Multi-Scale Procedure for High-Resolution 3D Reservoir Characterization and Improved CO2-EOR/Sequestration Management, SACROC Unit  

SciTech Connect (OSTI)

The primary goal of this project was to demonstrate a new and novel approach for high resolution, 3D reservoir characterization that can enable better management of CO{sub 2} enhanced oil recovery (EOR) projects and, looking to the future, carbon sequestration projects. The approach adopted has been the subject of previous research by the DOE and others, and relies primarily upon data-mining and advanced pattern recognition approaches. This approach honors all reservoir characterization data collected, but accepts that our understanding of how these measurements relate to the information of most interest, such as how porosity and permeability vary over a reservoir volume, is imperfect. Ideally the data needed for such an approach includes surface seismic to provide the greatest amount of data over the entire reservoir volume of interest, crosswell seismic to fill the resolution gap between surface seismic and wellbore-scale measurements, geophysical well logs to provide the vertical resolution sought, and core data to provide the tie to the information of most interest. These data are combined via a series of one or more relational models to enable, in its most successful application, the prediction of porosity and permeability on a vertical resolution similar to logs at each surface seismic trace location. In this project, the procedure was applied to the giant (and highly complex) SACROC unit of the Permian basin in West Texas, one of the world's largest CO{sub 2}-EOR projects and a potentially world-class geologic sequestration site. Due to operational scheduling considerations on the part of the operator of the field, the crosswell data was not obtained during the period of project performance (it is currently being collected however as part of another DOE project). This compromised the utility of the surface seismic data for the project due to the resolution gap between it and the geophysical well logs. An alternative approach was adopted that utilized a relational model to predict porosity and permeability profiles from well logs at each well location, and a 3D geostatistical variogram to generate the reservoir characterization over the reservoir volume of interest. A reservoir simulation model was built based upon this characterization and history-matched without making significant changes to it, thus validating the procedure. While not the same procedure as originally planned, the procedure ultimately employed proved successful and demonstrated that the general concepts proposed (i.e., data mining and advanced pattern recognition methods) have the flexibility to achieve the reservoir characterization objectives sought even with imperfect or incomplete data.

Scott R. Reeves

2007-09-30T23:59:59.000Z

227

GAS HYDRATE EQUILIBRIA FOR CO2-N2 AND CO2-CH4 GAS MIXTURES, EXPERIMENTS AND MODELLING  

E-Print Network [OSTI]

to remove those industrial gases that have an impact on the global warming before being emitted CO2 capture in industry is regarded as a possible tool that is suitable for reducing the global steelmaking plants, gas or coal power plants, chemical plants or natural gas production plants. Facing

Paris-Sud XI, Université de

228

Modelling and transient simulation of CO2-refrigeration systems with Modelica  

Science Journals Connector (OSTI)

This paper presents the current results of the development of a Modelica library for CO2-refrigeration systems based on the free Modelica library ThermoFluid. The development of the library is carried out in a research project of Airbus Deutschland and the TUHH and is focused on the aim to obtain a library for detailed numerical investigations of refrigeration systems with the rediscovered refrigerant carbon dioxide (CO2). A survey of the concept of an integrated on-board cooling system of airliners, the modelling language Modelica™ and the CO2-library is given and the modelling of CO2-heat exchangers is described. A comparison with steady state results of heat exchangers shows a fair agreement. The presented transient simulation results are compared with experimental data showing also a fair agreement.

Torge Pfafferott; Gerhard Schmitz

2004-01-01T23:59:59.000Z

229

Interpretation of Coal-Seam Sequestration Data Using a New Swelling and Shrinkage Model  

SciTech Connect (OSTI)

This paper deals with the influence of swelling and shrinkage of coal on the production of methane from, and sequestration of carbon dioxide in, a coalbed reservoir. A three-dimensional swelling and shrinkage model was developed. It is based on constitutive equations that account for coupled fluid pressure-deformation behavior of a porous medium that undergoes swelling and shrinkage. The swelling and shrinkage strains are computed on the basis of the amounts of different gases (e.g., CO2, CH4) sorbed or desorbed. The amounts of sorption and desorption are computed from measured isotherms with the aid of the Ideal Adsorbed Solution model for mixed gases. The permeability of the reservoir is modified according to the swelling-shrinkage model. The paper presents numerical results for the influence of swelling and shrinkage on reservoir performance during injection of carbon dioxide. The paper includes results from a number of examples, and analysis of a field injection into a coal seam at a site in the San Juan basin. Results show that with the incorporation of swelling and shrinkage into the analysis, it is possible to get a better history-match of production data. Results also show that coal swelling can reduce the injection volumes of carbon dioxide significantly. The interpretation of field data with the new swelling-shrinkage model shows that the coal swelling during carbon dioxide sequestration in coal-seams is an important factor that can influence field performance.

Siriwardane, H.J.; Smith, D.H.

2006-10-01T23:59:59.000Z

230

Evaluating carbon sequestration efficiency in an ocean circulation model by adjoint sensitivity analysis  

E-Print Network [OSTI]

Evaluating carbon sequestration efficiency in an ocean circulation model by adjoint sensitivity the application of the adjoint method to develop three-dimensional maps of carbon sequestration efficiency. Sequestration efficiency (the percentage of carbon injected at a continuous point source that remains

Follows, Mick

231

Back to Exploration 2008 CSPG CSEG CWLS Convention 1 A Computational Model of Catalyzed Carbon Sequestration  

E-Print Network [OSTI]

explores the feasibility of catalysis-based carbon sequestration by efficiently and accurately modeling that this method can be scaled to accurately predict the efficacy of such systems for carbon sequestration to help find the most cost effective methods possible. Most carbon sequestration methods are capture

Spiteri, Raymond J.

232

Evaluating variable switching and flash methods in modeling carbon sequestration in deep geologic formations  

E-Print Network [OSTI]

Evaluating variable switching and flash methods in modeling carbon sequestration in deep geologic performance computing to assess the risks involved in carbon sequestration in deep geologic formations-thermal- chemical processes in variably saturated, non-isothermal porous media is applied to sequestration

Mills, Richard

233

Modeling impacts of carbon sequestration on net greenhouse gas emissions from agricultural soils in China  

E-Print Network [OSTI]

Modeling impacts of carbon sequestration on net greenhouse gas emissions from agricultural soils impacts of carbon sequestration on net greenhouse gas emissions from agricultural soils in China, Global Biogeochem. Cycles, 23, GB1007, doi:10.1029/2008GB003180. 1. Introduction [2] Carbon (C) sequestration has

234

Carbon Sequestration Science  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Science Science July 2001 Focus Area Overview Presentation Mission and Scope Program Relationships Scientific Challenges Research Plans Facility Plans Princeton.ppt 7/16/01 Carbon Sequestration Science Focus Area New Projects Contribute to Sequestration Science Systems Integration Virtual Simulation of CO 2 Capture Technologies Cleanup Stream Gas Gasification Gasification MEA CO 2 Capture Facility Oxygen Membrane 3 km 2 inch tube 800m - 20 °C, 20 atm Liquid CO 2 , 100 tons ~1 kg CO 2 / s = 5 MW ^ CO 2 Coal Other Fuels Coal Other Fuels CO 2 Sequestration Aquifer H 2 O Flue gas H 2 O CH 4 CH 4 CO 2 Oil field Oil well Power plant CH 4 Coal - bed Aquiclude H 2 O CO 2 /N 2 CO 2 N 2 CO 2 CO 2 CO 2 CO 2 CO 2 Water Rock , 2 Coal Other Fuels Coal Other Fuels Combustor Oxygen Membrane Princeton.ppt 7/16/01 Carbon Sequestration Science Focus Area

235

Development of Novel CO2 Adsorbents for Capture of CO2 from Flue...  

Office of Scientific and Technical Information (OSTI)

Bloomfield Avenue, University of Hartford, West Hartford, Connecticut 06117-1599 ABSTRACT Carbon Sequestration, the capturing and storing of carbon dioxide (CO 2 ) emissions...

236

Numerical Modeling Studies of The Dissolution-Diffusion-Convection ProcessDuring CO2 Storage in Saline Aquifers  

SciTech Connect (OSTI)

For purposes of geologic storage, CO2 would be injected into saline formations at supercritical temperature and pressure conditions, and would form a separate phase that is immiscible with the aqueous phase (brine). At typical subsurface temperature and pressure conditions, supercritical CO2 (scCO2) has lower density than the aqueous phase and would experience an upward buoyancy force. Accordingly, the CO2 is expected to accumulate beneath the caprock at the top of the permeable interval, and could escape from the storage formation wherever (sub-)vertical pathways are available, such as fractures or faults through the caprock, or improperly abandoned wells. Over time, an increasing fraction of CO2 may dissolve in the aqueous phase, and eventually some of the aqueous CO2 may react with rock minerals to form poorly soluble carbonates. Dissolution into the aqueous phase and eventual sequestration as carbonates are highly desirable processes as they would increase permanence and security of storage. Dissolution of CO2 will establish phase equilibrium locally between the overlying CO2 plume and the aqueous phase beneath. If the aqueous phase were immobile, CO2 dissolution would be limited by the rate at which molecular diffusion can remove dissolved CO2 from the interface between CO2-rich and aqueous phases. This is a slow process. However, dissolution of CO2 is accompanied by a small increase in the density of the aqueous phase, creating a negative buoyancy force that can give rise to downward convection of CO2-rich brine, which in turn can greatly accelerate CO2 dissolution. This study explores the process of dissolution-diffusion-convection (DDC), using high-resolution numerical simulation. We find that geometric features of convection patterns are very sensitive to small changes in problem specifications, reflecting self-enhancing feedbacks and the chaotic nature of the process. Total CO2 dissolution rates on the other hand are found to be quite robust against modest changes in problem parameters, and are essentially constant as long as no dissolved CO2 reaches the lower boundary of the system.

Pruess, Karsten; Zhang, Keni

2008-11-17T23:59:59.000Z

237

Simulations of long column flow experiments related to geologic carbon sequestration: Effects of outer wall boundary condition on upward flow and formation of liquid CO2  

E-Print Network [OSTI]

did not occur. Rock-fluid heat transfer is minimized by thePruess K. On CO 2 fluid flow and heat transfer behavior inthe fluid could cool into the single digits if heat transfer

Oldenburg, C.M.

2014-01-01T23:59:59.000Z

238

Modeling of CO2 Reduction Impacts on Energy Prices with Modelica Philip Machanick1  

E-Print Network [OSTI]

, Peter Fritzson1,2 1 School ITEE, University of Queensland, Australia 2 PELAB, Department of ComputerModeling of CO2 Reduction Impacts on Energy Prices with Modelica Philip Machanick1 , Ariel Liebman1 at the ap- propriate rate. In this paper we present a Modelica model which explores the trade

Machanick, Philip

239

Novel CO2 - Philic Absorbents  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Novel Co Novel Co 2 - PhiliC AbsorbeNts Summary The ability to separate a high pressure mixture of CO 2 and H 2 such that a high pressure stream of CO 2 for sequestration and a high pressure stream of H 2 for energy are produced remains an elusive goal. This research has identified a class of compounds that melt in the presence of high pressure CO 2 , forming a liquid phase composed of roughly 50wt% CO 2 and 50wt% of the compound. Unlike conventional solvents that require substantial depressurization during regeneration to release a low pressure CO 2 stream, these novel compounds completely release the CO 2 at many hundreds of psia as the compound solidifies. This work will reveal whether one of more of these compounds can selectively remove CO 2 from a mixture

240

Numerical Modeling of CO2 Sequestration in Geologic Formations - Recent Results and Open Challenges  

E-Print Network [OSTI]

Feedback between Fluid Flow and Heat Transfer, Geophys. Res.coupling between fluid flow and heat transfer gives rise to

Pruess, Karsten

2006-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "modeling co2 sequestration" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

Numerical Modeling of CO2 Sequestration in Geologic Formations - Recent Results and Open Challenges  

E-Print Network [OSTI]

developed for oil and gas reservoirs, and for vadose zoneor depleting oil and gas reservoirs, unmineable coal seams,formations. While oil and gas reservoirs may provide some

Pruess, Karsten

2006-01-01T23:59:59.000Z

242

Carbon Sequestration Atlas IV Video  

SciTech Connect (OSTI)

The Carbon Sequestration Atlas is a collection of all the storage sites of CO2 such as, petroleum, natural gas, coal, and oil shale.

Rodosta, Traci

2013-04-19T23:59:59.000Z

243

Physics and Seismic Modeling for Monitoring CO2 Storage JOSE M. CARCIONE,1  

E-Print Network [OSTI]

, methane-bearing coal beds and saline aquifers. An example of the latter is the Sleipner field in the North-elastical equations model the seismic properties of reservoir rocks saturated with CO2, methane, oil and brine conditions, and can approach that of liquid water. Instead, pure CH4 (methane, hydrocarbon gas) exhibits

Santos, Juan

244

The H-Cube Project: Hydrodynamics, Heterogeneity and Homogenization in CO2 storage modeling  

E-Print Network [OSTI]

. Audigane, BRGM, E. Mouche, CEA, S. Viseur, CEREGE, D. Guérillot, TERRA 3E And the H-CUBE team Key words-scaling processes We propose to assess the buoyant forces on the CO2 and brine vertical migration of heterogeneity field distribution on the same 3D static earth model appropriate ranking measures of the static

Paris-Sud XI, Université de

245

Northern California CO2 Reduction Project  

SciTech Connect (OSTI)

C6 Resources LLC, a wholly owned subsidiary of Shell Oil Company, worked with the US Department of Energy (DOE) under a Cooperative Agreement to develop the Northern California CO2 Reduction Project. The objective of the Project is to demonstrate the viability of using Carbon Capture and Sequestration (CCS) to reduce existing greenhouse gas emissions from industrial sources on a large-scale. The Project will capture more than 700,000 metric tonnes of CO2 per year, which is currently being vented to the atmosphere from the Shell Martinez Refinery in Contra Costa County. The CO2 will be compressed and dehydrated at the refinery and then transported via pipeline to a sequestration site in a rural area in neighboring Solano County. The CO2 will be sequestered into a deep saline formation (more than two miles underground) and will be monitored to assure secure, long-term containment. The pipeline will be designed to carry as much as 1,400,000 metric tonnes of CO2 per year, so additional capacity will be available to accommodate CO2 captured from other industrial sources. The Project is expected to begin operation in 2015. The Project has two distinct phases. The overall objective of Phase 1 was to develop a fully definitive design basis for the Project. The Cooperative Agreement with the DOE provided cost sharing for Phase 1 and the opportunity to apply for additional DOE cost sharing for Phase 2, comprising the design, construction and operation of the Project. Phase 1 has been completed. DOE co-funding is provided by the American Recovery and Reinvestment Act (ARRA) of 2009. As prescribed by ARRA, the Project will stimulate the local economy by creating manufacturing, transportation, construction, operations, and management jobs while addressing the need to reduce greenhouse gas emissions at an accelerated pace. The Project, which will also assist in meeting the CO2 reduction requirements set forth in California?s Climate Change law, presents a major opportunity for both the environment as well as the region. C6 Resources is conducting the Project in collaboration with federally-funded research centers, such as Lawrence Berkeley National Lab and Lawrence Livermore National Lab. C6 Resources and Shell have identified CCS as one of the critical pathways toward a worldwide goal of providing cleaner energy. C6 Resources, in conjunction with the West Coast Regional Carbon Sequestration Partnership (WESTCARB), has conducted an extensive and ongoing public outreach and CCS education program for local, regional and state-wide stakeholders. As part of a long term relationship, C6 Resources will continue to engage directly with community leaders and residents to ensure public input and transparency. This topical report summarizes the technical work from Phase 1 of the Project in the following areas: ? Surface Facility Preliminary Engineering: summarizes the preliminary engineering work performed for CO2 capture, CO2 compression and dehydration at the refinery, and surface facilities at the sequestration site ? Pipeline Preliminary Engineering: summarizes the pipeline routing study and preliminary engineering design ? Geologic Sequestration: summarizes the work to characterize, model and evaluate the sequestration site ? Monitoring, Verification and Accounting (MVA): summarizes the MVA plan to assure long-term containment of the sequestered CO2

Hymes, Edward

2010-06-16T23:59:59.000Z

246

ENGINEERING FEASIBILITY AND ECONOMICS OF CO2 SEQUESTRATION/USE ON AN EXISTING COAL-FIRED POWER PLANT: A LITERATURE REVIEW  

SciTech Connect (OSTI)

The overall objective of this study is to evaluate the technical feasibility and the economics of alternate CO{sub 2} capture and sequestration/use technologies for retrofitting an existing pulverized coal-fired power plant. To accomplish this objective three alternative CO{sub 2} capture and sequestration systems will be evaluated to identify their impact on an existing boiler, associated boiler auxiliary components, overall plant operation and performance and power plant cost, including the cost of electricity. The three retrofit technologies that will be evaluated are as follows: (1) Coal combustion in air, followed by CO{sub 2} separation from flue gas with Kerr-McGee/ABB Lummus Global's commercial MEA-based absorption/stripping process. (2) Coal combustion in an O{sub 2}/CO{sub 2} environment with CO{sub 2} recycle. (3) Coal combustion in air with oxygen removal and CO{sub 2} captured by tertiary amines In support of this objective and execution of the evaluation of the three retrofit technologies a literature survey was conducted. It is presented in an ''annotated'' form, consistent with the following five sections: (1) Coal Combustion in O{sub 2}/CO{sub 2} Media; (2) Oxygen Separation Technologies; (3) Post Combustion CO{sub 2} Separation Technologies; (4) Potential Utilization of CO{sub 2}; and (5) CO{sub 2} Sequestration. The objective of the literature search was to determine if the three retrofit technologies proposed for this project continue to be sound choices. Additionally, a review of the literature would afford the opportunity to determine if other researchers have made significant progress in developing similar process technologies and, in that context, to revisit the current state-of-the-art. Results from this literature survey are summarized in the report.

Carl R. Bozzuto; Nsakala ya Nsakala

2000-01-31T23:59:59.000Z

247

3D CFD Model of High Temperature H2O/CO2 Co-electrolysis  

SciTech Connect (OSTI)

3D CFD Model of High Temperature H2O/CO2 Co-Electrolysis Grant Hawkes1, James O’Brien1, Carl Stoots1, Stephen Herring1 Joe Hartvigsen2 1 Idaho National Laboratory, Idaho Falls, Idaho, grant.hawkes@inl.gov 2 Ceramatec Inc, Salt Lake City, Utah INTRODUCTION A three-dimensional computational fluid dynamics (CFD) model has been created to model high temperature co-electrolysis of steam and carbon dioxide in a planar solid oxide electrolyzer (SOE) using solid oxide fuel cell technology. A research program is under way at the Idaho National Laboratory (INL) to simultaneously address the research and scale-up issues associated with the implementation of planar solid-oxide electrolysis cell technology for syn-gas production from CO2 and steam. Various runs have been performed under different run conditions to help assess the performance of the SOE. This paper presents CFD results of this model compared with experimental results. The Idaho National Laboratory (INL), in conjunction with Ceramatec Inc. (Salt Lake City, USA) has been researching for several years the use of solid-oxide fuel cell technology to electrolyze steam for large-scale nuclear-powered hydrogen production. Now, an experimental research project is underway at the INL to produce syngas by simultaneously electrolyzing at high-temperature steam and carbon dioxide (CO2) using solid oxide fuel cell technology. A strong interest exists in the large-scale production of syn-gas from CO2 and steam to be reformed into a usable transportation fuel. If biomass is used as the carbon source, the overall process is climate neutral. Consequently, there is a high level of interest in production of syn-gas from CO2 and steam electrolysis. With the price of oil currently around $60 / barrel, synthetically-derived hydrocarbon fuels (synfuels) have become economical. Synfuels are typically produced from syngas – hydrogen (H2) and carbon monoxide (CO) -- using the Fischer-Tropsch process, discovered by Germany before World War II. High-temperature nuclear reactors have the potential for substantially increasing the efficiency of syn-gas production from CO2 and water, with no consumption of fossil fuels, and no production of greenhouse gases. Thermal CO2-splitting and water splitting for syn-gas production can be accomplished via high-temperature electrolysis, using high-temperature nuclear process heat and electricity. A high-temperature advanced nuclear reactor coupled with a high-efficiency high-temperature electrolyzer could achieve a competitive thermal-to-syn-gas conversion efficiency of 45 to 55%.

Grant Hawkes; James O'Brien; Carl Stoots; Stephen Herring; Joe Hartvigsen

2007-06-01T23:59:59.000Z

248

Carbon Sequestration - Public Meeting  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Public Meeting Programmatic Environmental Impact Statement Public Meeting May 18, 2004 National Energy Technology Laboratory Office of Fossil Energy Scott Klara Carbon Sequestration Technology Manager Carbon Sequestration Program Overview * What is Carbon Sequestration * The Fossil Energy Situation * Greenhouse Gas Implications * Pathways to Greenhouse Gas Stabilization * Sequestration Program Overview * Program Requirements & Structure * Regional Partnerships * FutureGen * Sources of Information What is Carbon Sequestration? Capture can occur: * at the point of emission * when absorbed from air Storage locations include: * underground reservoirs * dissolved in deep oceans * converted to solid materials * trees, grasses, soils, or algae Capture and storage of CO 2 and other Greenhouse Gases that

249

A Computationally Efficient Approach to Applying the SAFT Equation for CO2 + H2O Phase Equilibrium  

E-Print Network [OSTI]

A Computationally Efficient Approach to Applying the SAFT Equation for CO2 + H2O Phase Equilibrium SAFT � CO2 ? H2O � Phase equilibrium � Geologic sequestration � Efficient computation Abbreviations and pressure range [6�20]. In addition to these models, SAFT is a molecular based theory which is designed

Patzek, Tadeusz W.

250

Section 6. Deep Time: Modelling of Atmospheric CO2 and the Marine CO2-Carbonic Acid-Carbonate System  

Science Journals Connector (OSTI)

...original MAGic model (Arvidson et al., 2006) as revised in Arvidson et al. (2011). There are a number of Earth system models in the literature (e.g., Berner and Canfield 1989; Hansen and Wallmann, 2003; Berner 2004; Bergman et al...

Fred T. Mackenzie; Andreas J. Andersson

251

AZ CO2 Storage Pilot  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

CO2 Storage Pilot Regional Carbon Sequestration Partnerships Initiative Review Meeting Pittsburgh, Pennsylvania October 7, 2008 John Henry Beyer, Ph.D. WESTCARB Program Manager, Geophysicist 510-486-7954, jhbeyer@lbl.gov Lawrence Berkeley National Laboratory Earth Sciences Division, MS 90-1116 Berkeley, CA 94720 2 WESTCARB region has major CO2 point sources 3 WESTCARB region has many deep saline formations - candidates for CO2 storage WESTCARB also created GIS layers for oil/gas fields and deep coal basins Source: DOE Carbon Sequestration Atlas of the United States and Canada 4 - Aspen Environmental - Bevilacqua-Knight, Inc. Arizona Utilities CO2 Storage Pilot Contracting and Funding Flow Department of Energy National Energy Technology Laboratory Lawrence Berkeley National

252

GEOCARBSULF: A combined model for Phanerozoic atmospheric O2 and CO2  

Science Journals Connector (OSTI)

A model for the combined long-term cycles of carbon and sulfur has been constructed which combines all the factors modifying weathering and degassing of the GEOCARB III model [Berner R.A., Kothavala Z., 2001. GEOCARB III: a revised model of atmospheric CO2 over Phanerozoic time. Am. J. Sci. 301, 182–204] for CO2 with rapid recycling and oxygen dependent carbon and sulfur isotope fractionation of an isotope mass balance model for O2 [Berner R.A., 2001. Modeling atmospheric O2 over Phanerozoic time. Geochim. Cosmochim. Acta 65, 685–694]. New isotopic data for both carbon and sulfur are used and new feedbacks are created by combining the models. Sensitivity analysis is done by determining (1) the effect on weathering rates of using rapid recycling (rapid recycling treats carbon and sulfur weathering in terms of young rapidly weathering rocks and older more slowly weathering rocks); (2) the effect on O2 of using different initial starting conditions; (3) the effect on O2 of using different data for carbon isotope fractionation during photosynthesis and alternative values of oceanic ?13C for the past 200 million years; (4) the effect on sulfur isotope fractionation and on O2 of varying the size of O2 feedback during sedimentary pyrite formation; (5) the effect on O2 of varying the dependence of organic matter and pyrite weathering on tectonic uplift plus erosion, and the degree of exposure of coastal lands by sea level change; (6) the effect on CO2 of adding the variability of volcanic rock weathering over time [Berner, R.A., 2006. Inclusion of the weathering of volcanic rocks in the GEOCARBSULF model. Am. J. Sci. 306 (in press)]. Results show a similar trend of atmospheric CO2 over the Phanerozoic to the results of GEOCARB III, but with some differences during the early Paleozoic and, for variable volcanic rock weathering, lower CO2 values during the Mesozoic. Atmospheric oxygen shows a major broad late Paleozoic peak with a maximum value of about 30% O2 in the Permian, a secondary less-broad peak centered near the Silurian/Devonian boundary, variation between 15% and 20% O2 during the Cambrian and Ordovician, a very sharp drop from 30% to 15% O2 at the Permo-Triassic boundary, and a more-or less continuous rise in O2 from the late Triassic to the present.

Robert A. Berner

2006-01-01T23:59:59.000Z

253

CO2ReMoVe - Progress Report  

E-Print Network [OSTI]

Seismic characterization of thin beds containing patchy carbon dioxide-brine .... different fluids involved in the CO2 sequestration procedure at variable formation

Danilo R. Velis

254

Modeling the Water Scrubbing Process and Energy Requirements for CO2 Capture to Upgrade Biogas to Biomethane  

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Water scrubbing is the most widely used technology for removing CO2 from biogas and landfill gas. This work developed a rate-based mass transfer model of the CO2–water system for upgrading biogas in a packed bed absorption column. The simulated results ...

William J. Nock; Mark Walker; Rimika Kapoor; Sonia Heaven

2014-07-10T23:59:59.000Z

255

Uncertainty analyses of CO2 plume expansion subsequent to wellbore CO2 leakage into aquifers  

SciTech Connect (OSTI)

In this study, we apply an uncertainty quantification (UQ) framework to CO2 sequestration problems. In one scenario, we look at the risk of wellbore leakage of CO2 into a shallow unconfined aquifer in an urban area; in another scenario, we study the effects of reservoir heterogeneity on CO2 migration. We combine various sampling approaches (quasi-Monte Carlo, probabilistic collocation, and adaptive sampling) in order to reduce the number of forward calculations while trying to fully explore the input parameter space and quantify the input uncertainty. The CO2 migration is simulated using the PNNL-developed simulator STOMP-CO2e (the water-salt-CO2 module). For computationally demanding simulations with 3D heterogeneity fields, we combined the framework with a scalable version module, eSTOMP, as the forward modeling simulator. We built response curves and response surfaces of model outputs with respect to input parameters, to look at the individual and combined effects, and identify and rank the significance of the input parameters.

Hou, Zhangshuan; Bacon, Diana H.; Engel, David W.; Lin, Guang; Fang, Yilin; Ren, Huiying; Fang, Zhufeng

2014-08-01T23:59:59.000Z

256

A Phase-Partitioning Model for CO2–Brine Mixtures at Elevated Temperatures and Pressures: Application to CO2-Enhanced Geothermal Systems  

E-Print Network [OSTI]

Simulations of dry-out and halite precipitation due to CO 2a reasonable approximation up to halite saturation (Spycher

Spycher, Nicolas; Pruess, Karsten

2010-01-01T23:59:59.000Z

257

RECONNAISSANCE ASSESSMENT OF CO2 SEQUESTRATION POTENTIAL IN THE TRIASSIC AGE RIFT BASIN TREND OF SOUTH CAROLINA, GEORGIA, AND NORTHERN FLORIDA  

SciTech Connect (OSTI)

A reconnaissance assessment of the carbon dioxide (CO{sub 2}) sequestration potential within the Triassic age rift trend sediments of South Carolina, Georgia and the northern Florida Rift trend was performed for the Office of Fossil Energy, National Energy Technology Laboratory (NETL). This rift trend also extends into eastern Alabama, and has been termed the South Georgia Rift by previous authors, but is termed the South Carolina, Georgia, northern Florida, and eastern Alabama Rift (SGFAR) trend in this report to better describe the extent of the trend. The objectives of the study were to: (1) integrate all pertinent geologic information (literature reviews, drilling logs, seismic data, etc.) to create an understanding of the structural aspects of the basin trend (basin trend location and configuration, and the thickness of the sedimentary rock fill), (2) estimate the rough CO{sub 2} storage capacity (using conservative inputs), and (3) assess the general viability of the basins as sites of large-scale CO{sub 2} sequestration (determine if additional studies are appropriate). The CO{sub 2} estimates for the trend include South Carolina, Georgia, and northern Florida only. The study determined that the basins within the SGFAR trend have sufficient sedimentary fill to have a large potential storage capacity for CO{sub 2}. The deeper basins appear to have sedimentary fill of over 15,000 feet. Much of this fill is likely to be alluvial and fluvial sedimentary rock with higher porosity and permeability. This report estimates an order of magnitude potential capacity of approximately 137 billion metric tons for supercritical CO{sub 2}. The pore space within the basins represent hundreds of years of potential storage for supercritical CO{sub 2} and CO{sub 2} stored in aqueous form. There are many sources of CO{sub 2} within the region that could use the trend for geologic storage. Thirty one coal fired power plants are located within 100 miles of the deepest portions of these basins. There are also several cement and ammonia plants near the basins. Sixteen coal fired power plants are present on or adjacent to the basins which could support a low pipeline transportation cost. The current geological information is not sufficient to quantify specific storage reservoirs, seals, or traps. There is insufficient hydrogeologic information to quantify the saline nature of the water present within all of the basins. Water data in the Dunbarton Basin of the Savannah River Site indicates dissolved solids concentrations of greater than 10,000 parts per million (not potential drinking water). Additional reservoir characterization is needed to take advantage of the SGFAR trend for anthropogenic CO{sub 2} storage. The authors of this report believe it would be appropriate to study the reservoir potential in the deeper basins that are in close proximity to the current larger coal fired power plants (Albany-Arabi, Camilla-Ocilla, Alamo-Ehrhardt, and Jedburg basin).

Blount, G.; Millings, M.

2011-08-01T23:59:59.000Z

258

Using modeling to design and evaluate transient open ocean iron enrichment for carbon sequestration  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Using modeling to design and evaluate Using modeling to design and evaluate transient open ocean iron enrichment for carbon sequestration Richard T. Barber (rbarber@duke.edu; 252-504-7578) Duke University Marine Laboratory 135 Duke Marine Lab Road Beaufort, NC 28516-9721 Fei Chai (fchai@maine.edu; 207-581-4317) University of Maine School of Marine Sciences 5741 Libby Hall Orono, ME 04469-5741 Introduction During the 1990s the rate of increase of CO 2 in the atmosphere was about 3.5 Pg C y -1 . Total emissions were 7.4 Pg C y -1 , so about 3.9 Pg C y -1 (52% of total emissions) were sequestered naturally. Of this, about 2.2 Pg C y -1 was absorbed by the oceans and 1.7 Pg C y -1 by the land (US DOE, 1999). The Kyoto Protocol of 1997 calls for a 34% reduction of emissions by 2050 and a reduction of 70% from the projected emissions at 2100. The major approach to

259

NETL: Gasifipedia - Carbon Sequestration  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Coal: SNG from Coal: Process & Commercialization: Carbon Sequestration Coal: SNG from Coal: Process & Commercialization: Carbon Sequestration Carbon sequestration, also termed carbon storage, is the permanent storage of CO2, usually in deep geologic formations. Industrially-generated CO2 -- resulting from fossil fuel combustion, gasification, and other industrial processes -- is injected as a supercritical fluid into geologic reservoirs, where it is held in place by natural traps and seals. Carbon storage is one approach to minimizing atmospheric emissions of man-made CO2. As discussed above, the main purpose of CO2 EOR such as the Weyburn Project is tertiary recovery of crude oil, but in effect substantial CO2 remains sequestered/stored as a result. Current Status of CO2 Storage CO2 storage is currently underway in the United States and around the world. Large, commercial-scale projects, like the Sleipner CO2 Storage Site in Norway and the Weyburn-Midale CO2 Project in Canada, have been injecting CO2 into geologic storage formations more than a decade. Each of these projects stores more than 1 million tons of CO2 per year. Large-scale efforts are currently underway in Africa, China, Australia, and Europe, as well. These commercial-scale projects are demonstrating that large volumes of CO2 can be safely and permanently stored. In addition, a number of smaller pilot projects are underway in different parts of the world to determine suitable locations and technologies for future long-term CO2 storage. To date, more than 200 small-scale CO2 storage projects have been carried out worldwide. A demonstration project that captures CO2 from a pulverized coal power plant and pipes it to a geologic formation for storage recently came online in Alabama.

260

An Integral Model of a Liquid CO2 Jet Discharge into a Deep Stratified Ocean with Horizontal Currents  

Science Journals Connector (OSTI)

A numerical model to predict the physical-chemical behavior of a single jet discharging liquid CO2...is discussed. The hydrodynamics are based on an integral formulation of the jet in a deep stratified ocean havi...

Mills Soldate; Gilbert R. Stegen…

1994-01-01T23:59:59.000Z

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261

D-optimal design for Rapid Assessment Model of CO2 flooding in high water cut oil reservoirs  

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Abstract Most of major oilfields in China have reached high water cut stage, but still, they contribute to more than 70% of domestic oil production. How to extract more oil from mature oilfields has become a hot topic in petroleum engineering. Carbon dioxide flooding is a win–win strategy because it can enhance oil recovery and simultaneously reduce CO2 emissions into the atmosphere. In order to evaluate the potentials of CO2 flooding in high water cut oil reservoirs, various 3-D heterogeneous geological models were built based on Guan 104 fault block in Dagang Oilfield to perform reservoir simulations. The D-optimal design was applied to build and verify the Rapid Assessment Model of CO2 flooding in high water cut oil reservoirs. Five quantitative variables were considered, including average horizontal permeability, permeability variation coefficient, ratio of vertical to horizontal permeability, net thickness of formation and percentage of recoverable reserves by water flooding. The process of weighting emphasized the contributions of linear terms, quadratic terms and first-order interactions of five quantitative parameters to improved recovery factor and Net Present Value of CO2 flooding. Using the Rapid Assessment Model of CO2 flooding in high water cut oil reservoirs, significant first-order interactions were sorted out and type curves were established and analyzed for the evaluation of technical and economic efficiency of CO2 flooding in high water cut oil reservoirs. Aimed at oil reservoirs with the similar geological conditions and fluid properties as Guan 104 fault block, the Rapid Assessment Model and type curves of CO2 flooding in high water cut oil reservoirs can be applied to predict improved recovery factor and Net Present Value of water-alternating-CO2 flooding at different conditions of reservoir parameters and development parameter. The approach could serve as a guide for the application and spread of CO2-EOR projects.

Zhaojie Song; Zhiping Li; Chunsheng Yu; Jirui Hou; Mingzhen Wei; Baojun Bai; Yunpeng Hu

2014-01-01T23:59:59.000Z

262

Modelling and forecasting fossil fuels, CO2 and electricity prices and their volatilities  

Science Journals Connector (OSTI)

In the current uncertain context that affects both the world economy and the energy sector, with the rapid increase in the prices of oil and gas and the very unstable political situation that affects some of the largest raw materials’ producers, there is a need for developing efficient and powerful quantitative tools that allow to model and forecast fossil fuel prices, CO2 emission allowances prices as well as electricity prices. This will improve decision making for all the agents involved in energy issues. Although there are papers focused on modelling fossil fuel prices, CO2 prices and electricity prices, the literature is scarce on attempts to consider all of them together. This paper focuses on both building a multivariate model for the aforementioned prices and comparing its results with those of univariate ones, in terms of prediction accuracy (univariate and multivariate models are compared for a large span of days, all in the first 4 months in 2011) as well as extracting common features in the volatilities of the prices of all these relevant magnitudes. The common features in volatility are extracted by means of a conditionally heteroskedastic dynamic factor model which allows to solve the curse of dimensionality problem that commonly arises when estimating multivariate GARCH models. Additionally, the common volatility factors obtained are useful for improving the forecasting intervals and have a nice economical interpretation. Besides, the results obtained and methodology proposed can be useful as a starting point for risk management or portfolio optimization under uncertainty in the current context of energy markets.

Carolina García-Martos; Julio Rodríguez; María Jesús Sánchez

2013-01-01T23:59:59.000Z

263

Integrated modeling of CO2 storage and leakage scenarios including transitions between super- and sub-critical conditions, and phase change between liquid and gaseous CO2  

E-Print Network [OSTI]

feedbacks between fluid flow and heat transfer can occur oninterplay between fluid flow and heat transfer gives rise toof multiphase fluid flow and heat transfer. CO 2 rising

Pruess, K.

2012-01-01T23:59:59.000Z

264

geologic-sequestration | netl.doe.gov  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Geological Sequestration Training and Research Program in Capture and Transport: Development of the Most Economical Separation Method for CO2 Capture Project No.: DE-FE0001953 NETL...

265

Enhancement of CO2/N2 selectivity in a metal-organic framework by cavity modification  

E-Print Network [OSTI]

electricity is a major source of CO2 in the atmosphere, but the capture and sequestration of CO2 from flue gas two-thirds), CO2, water vapor, oxygen, and minor components such as carbon monoxide, nitrogen oxides

266

Analysis of mineral trapping for CO2 disposal in deep aquifers  

E-Print Network [OSTI]

of Mineral Trapping for CO2 Disposal in Deep Aquifers Tianfue~mail: Tianfu Xu@lbl. gov) CO2 disposal into deep aquiferspermit significant sequestration of CO2. We performed batch

Xu, Tianfu

2014-01-01T23:59:59.000Z

267

Techno-economic modelling of CO2 capture systems for Australian industrial sources.  

E-Print Network [OSTI]

??Australia is recognising that carbon capture and storage (CCS) may be a feasible pathway for addressing increasing levels of CO2 emissions. This thesis presents a… (more)

Ho, Minh Trang Thi

2007-01-01T23:59:59.000Z

268

Carbon sequestration by patch fertilization: A comprehensive assessment using coupled physical-ecological-biogeochemical models  

SciTech Connect (OSTI)

This final report summarizes research undertaken collaboratively between Princeton University, the NOAA Geophysical Fluid Dynamics Laboratory on the Princeton University campus, the State University of New York at Stony Brook, and the University of California, Los Angeles between September 1, 2000, and November 30, 2006, to do fundamental research on ocean iron fertilization as a means to enhance the net oceanic uptake of CO2 from the atmosphere. The approach we proposed was to develop and apply a suite of coupled physical-ecological-biogeochemical models in order to (i) determine to what extent enhanced carbon fixation from iron fertilization will lead to an increase in the oceanic uptake of atmospheric CO2 and how long this carbon will remain sequestered (efficiency), and (ii) examine the changes in ocean ecology and natural biogeochemical cycles resulting from iron fertilization (consequences). The award was funded in two separate three-year installments: • September 1, 2000 to November 30, 2003, for a project entitled “Ocean carbon sequestration by fertilization: An integrated biogeochemical assessment.” A final report was submitted for this at the end of 2003 and is included here as Appendix 1. • December 1, 2003 to November 30, 2006, for a follow-on project under the same grant number entitled “Carbon sequestration by patch fertilization: A comprehensive assessment using coupled physical-ecological-biogeochemical models.” This report focuses primarily on the progress we made during the second period of funding subsequent to the work reported on in Appendix 1. When we began this project, we were thinking almost exclusively in terms of long-term fertilization over large regions of the ocean such as the Southern Ocean, with much of our focus being on how ocean circulation and biogeochemical cycling would interact to control the response to a given fertilization scenario. Our research on these types of scenarios, which was carried out largely during the first three years of our project, led to several major new insights on the interaction between ocean biogeochemistry and circulation. This work, which is described in the following Section II on “Large scale fertilization,” has continued to appear in the literature over the past few years, including two high visibility papers in Nature. Early on in the first three years of our project, it became clear that small "patch-scale" fertilizations over limited regions of order 100 km diameter were much more likely than large scale fertilization, and we carried out a series of idealized patch fertilization simulations reported on in Gnanadesikan et al. (2003). Based on this paper and other results we had obtained by the end of our first three-year grant, we identified a number of important issues that needed to be addressed in the second three-year period of this grant. Section III on “patch fertilization” discusses the major findings of this phase of our research, which is described in two major manuscripts that will be submitted for publication in the near future. This research makes use of new more realistic ocean ecosystem and iron cycling models than our first paper on this topic. We have several major new insights into what controls the efficiency of iron fertilization in the ocean. Section IV on “model development” summarizes a set of papers describing the progress that we made on improving the ecosystem models we use for our iron fertilization simulations.

Jorge L. Sarmiento - Princeton PI, Anand Gnanadesikan - Princeton Co-I, Nicolas Gruber - UCLA PI, Xin Jin - UCLA PostDoc, Robert Armstrong - SUNY /Stony Brook Consultant

2007-06-21T23:59:59.000Z

269

Extension of NORSOK CO2 corrosion prediction model for elbow geometry  

Science Journals Connector (OSTI)

Internal corrosion of flowlines and pipelines is inevitable when transporting oil and gas that contains corrosive species. The consequences of corrosion such as material failure, loss of production, plant shutdown, and environmental pollution result in extra cost that negatively affect the project economics. Early prediction of corrosion severity is, therefore, very important to propose proper measures to avoid or eliminate corrosion. The prediction is normally carried on using a selected model for corrosion prediction. One of these models is NORSOK model, an empirical model developed by NORSOK for CO2 corrosion prediction in straight pipes. Norsk Sokkels Konkuranseposisjon or, in English, The Competitive Standing of the Norwegian Offshore Sector (NORSOK) is number of standards developed by Norwegian industry groups covering different topics that related to offshore industry. In this paper, NORSOK model has been modified to make it applicable to elbows geometries by introducing the equivalent length concept. A friendly graphical user interface computational package is developed for corrosion prediction in both straight pipes and elbows. The package is validated against measured data and acceptable accuracy is attained.

Mysara Eissa Mohyaldin; Noaman Elkhatib; Mokhtar Che Ismail

2013-01-01T23:59:59.000Z

270

A Plant-Level Simulation Model for Evaluating CO2 Capture Options  

E-Print Network [OSTI]

- Resource use Environmental Emissions - Air, water, land Plant & Process Costs - Capital - O&M - COE #12;E · Subcritical · Supercritical · Ultra-supercritical Furnace Firing Types · Tangential · Wall · Cyclone Furnace: - Water gas shift + CO2 capture (pre-combustion) · CO2 Transport Options Pipelines (six U.S. regions

271

Integrating Steel Production with Mineral Carbon Sequestration  

SciTech Connect (OSTI)

The objectives of the project were (i) to develop a combination iron oxide production and carbon sequestration plant that will use serpentine ores as the source of iron and the extraction tailings as the storage element for CO2 disposal, (ii) the identification of locations within the US where this process may be implemented and (iii) to create a standardized process to characterize the serpentine deposits in terms of carbon disposal capacity and iron and steel production capacity. The first objective was not accomplished. The research failed to identify a technique to accelerate direct aqueous mineral carbonation, the limiting step in the integration of steel production and carbon sequestration. Objective (ii) was accomplished. It was found that the sequestration potential of the ultramafic resource surfaces in the US and Puerto Rico is approximately 4,647 Gt of CO2 or over 500 years of current US production of CO2. Lastly, a computer model was developed to investigate the impact of various system parameters (recoveries and efficiencies and capacities of different system components) and serpentinite quality as well as incorporation of CO2 from sources outside the steel industry.

Klaus Lackner; Paul Doby; Tuncel Yegulalp; Samuel Krevor; Christopher Graves

2008-05-01T23:59:59.000Z

272

Modeling the CO2 Footprint of the U.S. Coal Mining Industry and the Potential Economic Costs of CO2 Legislation.  

E-Print Network [OSTI]

??The U.S. government is expected to develop a federal mandate which will aim tocurb CO2 emissions into the atmosphere. This legislation will most likely be… (more)

Aziz, AbdulMajeed

2010-01-01T23:59:59.000Z

273

Estimation of CO2 effluxes from suburban forest floor and grass using a process-based model  

Science Journals Connector (OSTI)

Abstract Carbon dioxide is an important greenhouse gas, and its atmospheric concentration has been predicted to increase in the future. The objective of this study was to quantify the soil CO2 efflux in a suburban area including mixed deciduous forest and grass by numerically modeling the CO2 transport through the soil profile. Three stations per land-cover (forest and grass) were selected at the Cub Hill site (MD, USA), where the US Forest Service operates an urban flux tower. Six VAISALA CO2 sensors (Vaisala Inc., Finland) per monitoring station were horizontally installed at 6 different depths (soil surface, 0.02, 0.05, 0.10, 0.20, and 0.30 m from the soil surface) in the mid of May, 2011. Temperature and volumetric soil moisture measurements were taken using thermistors and EC-5 sensors (Decagon devices, Pullman, WA, USA) that were installed at the same depths as the CO2 sensors except for the soil surface. These data were recorded every 10 min. To evaluate the numerical model (SOILCO2), CO2 efflux using the standard chamber method was measured once a week. The CO2 effluxes from the standard chamber method ranged from 3.32 × 10?9 to 7.28 × 10?8 m3 m?2 s?1 and 6.79 × 10?9 to 1.45 × 10?7 m3 m?2 s?1 for forest and grass, respectively. The CO2 effluxes from “bare” soil at the grass site varied with the range of 3.63 × 10?8 to 9.37 × 10?8 m3 m?2 s?1. The “pulse effect” (a rapid increase of CO2 concentrations right after rainfall events) in grass, where changes in soil moisture were larger than in the forest, was more apparent than in the forest. Diurnal patterns similar to those of temperature were observed from CO2 profiles in soils. The SOILCO2 model estimated the soil CO2 effluxes with coefficients of correlation of 0.64 and 0.76 at forest and grass, respectively, and root mean square error (RMSE) of 1.58 × 10?8 and 2.06 × 10?8 m3 m?2 s?1 for forest and grass, respectively. This study suggests that the SOILCO2 model can provide a better understanding of the contribution of the soil ecosystem to the carbon cycle in suburban environments including mixed deciduous forest and grass.

J.A. Chun; K. Szlavecz; M. Bernard; D. Ferrer; J. Hom; N. Saliendra

2014-01-01T23:59:59.000Z

274

COâ‚‚ Sequestration Project at NERSC  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Carbon Sequestration Carbon Sequestration Carbon Sequestration 2011-01-31-Sequestration1.jpg Why it Matters: Underground carbon sequestration is a technique in which one of the primary greenhouse gases, carbon dioxide (CO2), is removed from the atmosphere by injecting it into subsurface salt acquifers. This is a key potential global warming mitigation strategy. Key Challenges: A variety of geochemical processes can affect the mechanism of CO2 dissolution and the volume of CO2 that can be stored - the key result determining whether the strategy is effective or not. Simulation is the only way to study the detailed effects of geological flow, gravitational instability, rock heterogeneity, and brine salinity. These multicomponent, multiphase simulations must be carried out at high

275

CO2 Sequestration Enhances Coalbed Methane Production.  

E-Print Network [OSTI]

??Since 1980s, petroleum engineers and geologists have conducted researches on Enhanced Coalbed Methane Recovery (ECBM). During this period, many methods are introduced to enhance the… (more)

Pang, Yu

2013-01-01T23:59:59.000Z

276

Modeling the Direct Solar Conversion of CO2 to CO and O2  

Science Journals Connector (OSTI)

Ralph J. Price , David A. Morse , Steven L. Hardy , and Thomas H. Fletcher * ... If the path length, temperature, and concentration of CO2 are high enough, the photolysis reaction of sunlight with CO2 can also form CO and O.1 From an inlet stream of pure CO2, a product stream with 4?6 mol % CO was produced in a prototype unit using reflected sunlight as the heat source.2 This CO can then be separated and (a) used as a fuel or (b) converted to H2 through the water?gas shift reaction. ... Energy Fuels 1993, 7, 874. ...

Ralph J. Price; David A. Morse; Steven L. Hardy; Thomas H. Fletcher; Scott C. Hill; Reed J. Jensen

2004-04-20T23:59:59.000Z

277

Integrated Assessment Modeling of Carbon Sequestration and Land Use Emissions Using Detailed Model Results and Observations  

SciTech Connect (OSTI)

This report outlines the progress on the development and application of Integrated Assessment Modeling of Carbon Sequestrations and Land Use Emissions supported by the DOE Office of Biological and Environmental Research (OBER), U.S. Department of Energy, Grant No. DOE-DE-FG02-01ER63069. The overall objective of this collaborative project between the University of Illinois at Urbana-Champaign (UIUC), Oak Ridge National Laboratory (ORNL), Lawrence Livermore National Laboratory (LLNL), and Pacific Northwest National Laboratory (PNNL) was to unite the latest advances in carbon cycle research with scientifically based models and policy-related integrated assessment tools that incorporate computationally efficient representations of the latest knowledge concerning science and emission trajectories, and their policy implications. As part of this research we accomplished the following tasks that we originally proposed: (1) In coordination with LLNL and ORNL, we enhanced the Integrated Science Assessment Model's (ISAM) parametric representation of the ocean and terrestrial carbon cycles that better represent spatial and seasonal variations, which are important to study the mechanisms that influence carbon sequestration in the ocean and terrestrial ecosystems; (2) Using the MiniCAM modeling capability, we revised the SRES (IPCC Special Report on Emission Scenarios; IPCC, 2000) land use emission scenarios; and (3) On the application front, the enhanced version of ISAM modeling capability is applied to understand how short- and long-term natural carbon fluxes, carbon sequestration, and human emissions contribute to the net global emissions (concentrations) trajectories required to reach various concentration (emission) targets. Under this grant, 21 research publications were produced. In addition, this grant supported a number of graduate and undergraduate students whose fundamental research was to learn a disciplinary field in climate change (e.g., ecological dynamics and ocean circulations) and then complete research on how this field could be linked to the other factors we need to consider in its dynamics (e.g., land use, ocean and terrestrial carbon sequestration and climate change).

Dr. Atul Jain

2005-04-17T23:59:59.000Z

278

Development of Chemical Model to Predict the Interactions between Supercritical CO2and Fluid, and Rocks in EGS Reservoirs  

Broader source: Energy.gov [DOE]

This project will develop a chemical model, based on existing models and databases, that is capable of simulating chemical reactions between supercritical (SC) CO2 and Enhanced Geothermal System (EGS) reservoir rocks of various compositions in aqueous, non-aqueous and 2-phase environments.

279

Mathematical models as tools for probing long-term safety of CO2 storage  

E-Print Network [OSTI]

between rocks and fluids, and heat transfer. Much currentFeedback between Fluid Flow and Heat Transfer, Geophys. Res.Pruess, K. On CO2 Fluid Flow and Heat Transfer Behavior in

Pruess, Karsten

2010-01-01T23:59:59.000Z

280

CO2 laser CVD of a-Si:H: in situ gas analysis and model calculations  

Science Journals Connector (OSTI)

and disilane Si2H6 induced by continuous wave CO2 laser irradiation has been investigated under the conditions of chemical vapor deposition (CVD) of amorphous hydrogenated silicon a-Si:H. At the very position of...

F. Falk; G. Mollekopf; H. Stafast

1998-11-01T23:59:59.000Z

Note: This page contains sample records for the topic "modeling co2 sequestration" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

Optimize carbon dioxide sequestration, enhance oil recovery  

E-Print Network [OSTI]

- 1 - Optimize carbon dioxide sequestration, enhance oil recovery January 8, 2014 Los Alamos simulation to optimize carbon dioxide (CO2) sequestration and enhance oil recovery (CO2-EOR) based on known production. Due to carbon capture and storage technology advances, prolonged high oil prices

282

Simple model to estimate the contribution of atmospheric CO2 to the Earth’s greenhouse effect  

Science Journals Connector (OSTI)

We show how the CO2 contribution to the Earth’s greenhouse effect can be estimated from relatively simple physical considerations and readily available spectroscopic data. In particular we present a calculation of the “climate sensitivity” (that is the increase in temperature caused by a doubling of the concentration of CO2) in the absence of feedbacks. Our treatment highlights the important role played by the frequency dependence of the CO2absorptionspectrum. For pedagogical purposes we provide two simple models to visualize different ways in which the atmosphere might return infrared radiation back to the Earth. The more physically realistic model based on the Schwarzschild radiative transfer equations uses as input an approximate form of the atmosphere’s temperature profile and thus includes implicitly the effect of heat transfer mechanisms other than radiation.

Derrek J. Wilson; Julio Gea-Banacloche

2012-01-01T23:59:59.000Z

283

Microbially induced magnesium carbonation reactions as a strategy for carbon sequestration in ultramafic mine tailings.  

E-Print Network [OSTI]

??The atmospheric carbon dioxide (CO2) concentration has increased due to anthropogenic fossil fuel combustion, causing higher global temperatures and other negative environmental effects. CO2 sequestration… (more)

McCutcheon, Jenine

2013-01-01T23:59:59.000Z

284

DOE Manual Studies Terrestrial Carbon Sequestration | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Manual Studies Terrestrial Carbon Sequestration Manual Studies Terrestrial Carbon Sequestration DOE Manual Studies Terrestrial Carbon Sequestration January 18, 2011 - 12:00pm Addthis Washington, DC - There is considerable opportunity and growing technical sophistication to make terrestrial carbon sequestration both practical and effective, according to the latest carbon capture and storage (CCS) "best practices" manual issued by the U.S. Department of Energy. Best Practices for Terrestrial Sequestration of Carbon Dioxide details the most suitable operational approaches and techniques for terrestrial sequestration, a carbon dioxide (CO2) mitigation strategy capable of removing CO2 already in the air. Consequently, terrestrial sequestration, which uses photosynthesis - part of the natural carbon cycle - to create

285

NETL: IEP – Oxy-Combustion CO2 Emissions Control - Oxygen-Based PC Boiler  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

– Oxy-Combustion CO2 Emissions Control – Oxy-Combustion CO2 Emissions Control Oxygen-Based PC Boiler Project No.: FC26-04NT42207 & FC26-03NT41736 Spatial Comparison of an Air-Fired Furnace versus an Oxygen-Fired Furnace. Spatial Comparison of an Air-Fired Furnace versus an Oxygen-Fired Furnace. Foster Wheeler North America Corporation will conduct to two projects to improve carbon dioxide (CO2) capture technology by developing a conceptual pulverized coal-fired boiler system design using oxygen as the combustion medium. Using oxygen instead of air produces a flue gas with a high CO2 concentration, which will facilitate CO2 capture for subsequent sequestration. The first project will develop modeling simulations that will lead to a conceptual design that addresses costs, performance, and emissions, and

286

Application of the perturbed chain-SAFT equation of state for modeling CO2 solubility in aqueous monoethanolamine solutions  

Science Journals Connector (OSTI)

Abstract CO2 removal by treatment of acid gases by aqueous alkanolamines is a very significant operation from industrial and environmental point of view. To attain a comprehensive thermodynamic model of the CO2–MEA–H2O in a wide range of temperature and CO2 partial pressures, Perturbed Chain-Statistical Associating Fluid Theory (PC-SAFT) EOS is applied to predict the absorption of carbon dioxide by MEA (MonoEthanolAmine). In order to find the best association scheme for MEA in PC-SAFT EOS, three pure parameter sets for MEA in the 2B, 3B and 4C association schemes are determined in temperature range 303.15–443.15 K. Temperature independent binary interaction parameters have been adjusted in the VLE calculation for three schemes of MEA and two schemes of water. Binary VLE calculations show the 3B scheme for MEA and the 4C scheme for water indicate the best prediction in the MEA–H2O system. Excess enthalpy data for aqueous MEA are predicted by kij, which has been adjusted in VLE calculations. The 3B scheme for MEA and the 4C scheme for water also are used to find CO2 solubility in the ternary system of CO2–MEA–H2O system. Ideal Smith–Missen algorithm has been applied to find the concentration of all species in chemical equilibrium. Results show the 3B association scheme for MEA and the 4C association scheme for water in PC-SAFT EOS have better agreement with binary and ternary experimental data. PC-SAFT EOS is able to anticipate the CO2 solubility in the CO2–MEA–H2O system without any regression in the ternary system. The CO2 solubility in ternary system is compared to e-NRTL as a common thermodynamics model. The average absolute partial pressure deviations for PC-SAFT and e-NRTL are calculated around 36% and 42%, respectively.

Sadjad Fakouri Baygi; Hassan Pahlavanzadeh

2014-01-01T23:59:59.000Z

287

Carbon Sequestration  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

David a. Lang David a. Lang Project Manager National Energy Technology Laboratory 626 Cochrans Mill Road P.O. Box 10940 Pittsburgh, PA 15236 412-386-4881 david.lang@netl.doe.gov andrew chizmeshya Arizona State University Center for Solid State Science Tempe, AZ 85287-1704 480-965-6072 chizmesh@asu.edu A Novel ApproAch to MiNerAl cArboNAtioN: eNhANciNg cArboNAtioN While AvoidiNg MiNerAl pretreAtMeNt process cost Background Carbonation of the widely occurring minerals of the olivine group, such as forsterite (Mg 2 SiO 4 ), is a potential large-scale sequestration process that converts CO 2 into the environmentally benign mineral magnesite (MgCO 3 ). Because the process is exothermic, it inherently offers low-cost potential. Enhancing carbonation reactivity is the key to economic viability. Previous

288

Pore-Level Modeling of Carbon Dioxide Sequestration in Oil Fields: A study of viscous and buoyancy forces  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Sequestration in Oil Fields: A Sequestration in Oil Fields: A study of viscous and buoyancy forces Grant S. Bromhal, U.S. Department of Energy, National Energy Technology Laboratory, Morgantown, WV 26507-0880, gbromhal@netl.doe.gov, M. Ferer, Department of Physics, West Virginia University, and Duane H. Smith, U.S. Department of Energy, National Energy Technology Laboratory, Morgantown, WV 26507-0880 Underground injection of carbon dioxide for enhanced oil recovery (EOR) is a common practice in the oil and gas industry and has often been cited as a proven method of sequestering CO 2 (US DOE, 1999). Of all sequestration methods, this is probably the best understood, as carbon dioxide has been used in the oil industry for many years. Additionally, most oil fields have been relatively well characterized geologically, and

289

Long-term Variations of CO2 Trapped in Different Mechanisms in Deep Saline Formations: A Case Study of the Songliao Basin, China  

E-Print Network [OSTI]

Predicted CO 2 enhanced coalbed methane recovery and CO 22 sequestration in coalbed methane (CBM) zone are Qinghai,

Zhang, Wei

2009-01-01T23:59:59.000Z

290

A shallow subsurface controlled release facility in Bozeman, Montana, USA, for testing near surface CO2 detection techniques and transport models  

SciTech Connect (OSTI)

A facility has been constructed to perform controlled shallow releases of CO2 at flow rates that challenge near surface detection techniques and can be scalable to desired retention rates of large scale CO2 storage projects. Preinjection measurements were made to determine background conditions and characterize natural variability at the site. Modeling of CO2 transport and concentration in saturated soil and the vadose zone was also performed to inform decisions about CO2 release rates and sampling strategies. Four releases of CO2 were carried out over the summer field seasons of 2007 and 2008. Transport of CO2 through soil, water, plants, and air was studied using near surface detection techniques. Soil CO2 flux, soil gas concentration, total carbon in soil, water chemistry, plant health, net CO2 flux, atmospheric CO2 concentration, movement of tracers, and stable isotope ratios were among the quantities measured. Even at relatively low fluxes, most techniques were able to detect elevated levels of CO2 in the soil, atmosphere, or water. Plant stress induced by CO2 was detectable above natural seasonal variations.

Spangler, Lee H.; Dobeck, Laura M.; Repasky, Kevin S.; Nehrir, Amin R.; Humphries, Seth D.; Barr, Jamie L.; Keith, Charlie J.; Shaw, Joseph A.; Rouse, Joshua H.; Cunningham, Alfred B.; Benson, Sally M.; Oldenburg, Curtis M.; Lewicki, Jennifer L.; Wells, Arthur W.; Diehl, J. R.; Strazisar, Brian; Fessenden, Julianna; Rahn, Thom A.; Amonette, James E.; Barr, Jonathan L.; Pickles, William L.; Jacobson, James D.; Silver, Eli A.; Male, Erin J.; Rauch, Henry W.; Gullickson, Kadie; Trautz, Robert; Kharaka, Yousif; Birkholzer, Jens; Wielopolski, Lucien

2010-03-01T23:59:59.000Z

291

Experimental study and kinetic model of monoethanolamine oxidative and thermal degradation for post-combustion CO2 capture  

Science Journals Connector (OSTI)

Abstract In the present work, a kinetic model is proposed for the prediction of amine solvent degradation in the post-combustion CO2 capture process. Solvent degradation combined to the emission of degradation products represents one of the main operational drawbacks of this process. It induces additional costs and it impacts the process efficiency and its environmental balance. In the present work, degradation is studied under accelerated conditions for the case of monoethanolamine solvent (MEA). The influence of the temperature and of the O2 and CO2 concentrations in the gas feed are studied, and their effect on the MEA loss and the emission of degradation products is quantified. Based on the experimental results, a kinetic model for both oxidative and thermal degradation of MEA is proposed and compared to previous attempts to model MEA degradation. The present kinetic model may be further used to develop a practical tool assessing solvent degradation in large-scale capture plants.

Grégoire Léonard; Dominique Toye; Georges Heyen

2014-01-01T23:59:59.000Z

292

Carbon Sequestration and the Restoration of Land Health  

Science Journals Connector (OSTI)

Carbon sequestration, the conversion of greenhouse gas CO2...toorganic matter, offers a powerful tool with which to combat climate change. The enlargement of carbon sinks stored in soil and biota is...2. Carbon sequestration

Andres Arnalds

2004-08-01T23:59:59.000Z

293

Developing Model Constraints on Northern Extra-Tropical Carbon Cycling Based on measurements of the Abundance and Isotopic Composition of Atmospheric CO2  

SciTech Connect (OSTI)

The objective of this project was to perform CO2 data syntheses and modeling activities to address two central questions: 1) how much has the seasonal cycle in atmospheric CO2 at northern high latitudes changed since the 1960s, and 2) how well do prognostic biospheric models represent these changes. This project also supported the continuation of the Scripps time series of CO2 isotopes and concentration at ten baseline stations distributed globally.

Keeling, Ralph [UCSD-SIO

2014-12-12T23:59:59.000Z

294

Carbon sequestration  

Science Journals Connector (OSTI)

...Leaver and Howard Dalton Carbon sequestration Rattan Lal * * ( lal.1...and biotic technologies. Carbon sequestration implies transfer of atmospheric...and biomass burning. 3. Carbon sequestration Emission rates from fossil...

2008-01-01T23:59:59.000Z

295

8,993,963 Metric Tons of CO2 Injected as of December 17, 2014...  

Energy Savers [EERE]

210,526 passenger vehicles. The projects currently injecting CO2 within DOE's Regional Carbon Sequestration Partnership Program and the Major Demonstration Program are detailed...

296

9,030,305 Metric Tons of CO2 Injected as of January 6, 2015 ...  

Office of Environmental Management (EM)

210,526 passenger vehicles. The projects currently injecting CO2 within DOE's Regional Carbon Sequestration Partnership Program and the Major Demonstration Program are detailed...

297

Emerging Energy-efficiency and CO2 Emission-reduction Technologies for Cement and Concrete Production  

E-Print Network [OSTI]

Looping Technology Description: Amine scrubbing carboncarbon capture using absorption technologies Calera process CO 2 sequestration in concrete curing technology Carbonate looping

Hasanbeigi, Ali

2013-01-01T23:59:59.000Z

298

Mulitdimensional reactive transport modeling of CO2 minreal sequestration in basalts at the Helllisheidi geothermal field, Iceland  

E-Print Network [OSTI]

3 km SW of the Hellisheidi geothermal power plant, owned andbuilt next to Hellisheidi geothermal power plant. The pilotfrom Hellisheidi geothermal power plant. In simulations of

Aradottir, E.S.P.

2013-01-01T23:59:59.000Z

299

A model comparison initiative for a CO2 injection field test: An introduction to Sim-SEQ  

E-Print Network [OSTI]

gas reservoir under CO 2 flood since. The tests are managedwith Denbury’s commercial flood (Hovorka et al. , 2011), theto the reservoir under CO 2 flood. The DAS includes one CO 2

Mukhopadhyay, S.

2013-01-01T23:59:59.000Z

300

International Symposium on Site Characterization for CO2 Geological Storage  

E-Print Network [OSTI]

FEASIBILITY: TEAPOT DOME EOR PILOT L. Chiaramonte, M.TO IDENTIFY OPTIMAL CO 2 EOR STORAGE SITES V. Núñez Lopez,from a carbon dioxide EOR/sequestration project. Energy

Tsang, Chin-Fu

2006-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "modeling co2 sequestration" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

Regional Carbon Sequestration Partnerships | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Science & Innovation » Carbon Capture and Storage » Regional Science & Innovation » Carbon Capture and Storage » Regional Carbon Sequestration Partnerships Regional Carbon Sequestration Partnerships DOE's Regional Carbon Sequestration Partnerships Program DOE has created a network of seven Regional Carbon Sequestration Partnerships (RCSPs) to help develop the technology, infrastructure, and regulations to implement large-scale CO2 storage (also called carbon sequestration) in different regions and geologic formations within the Nation. Collectively, the seven RCSPs represent regions encompassing: 97 percent of coal-fired CO2 emissions; 97 percent of industrial CO2 emissions; 96 percent of the total land mass; and essentially all the geologic sequestration sites in the U.S. potentially available for carbon storage.

302

New demands, new supplies : a national look at the water balance of carbon dioxide capture and sequestration.  

SciTech Connect (OSTI)

Concerns over rising concentrations of greenhouse gases in the atmosphere have resulted in serious consideration of policies aimed at reduction of anthropogenic carbon dioxide (CO2) emissions. If large scale abatement efforts are undertaken, one critical tool will be geologic sequestration of CO2 captured from large point sources, specifically coal and natural gas fired power plants. Current CO2 capture technologies exact a substantial energy penalty on the source power plant, which must be offset with make-up power. Water demands increase at the source plant due to added cooling loads. In addition, new water demand is created by water requirements associated with generation of the make-up power. At the sequestration site however, saline water may be extracted to manage CO2 plum migration and pressure build up in the geologic formation. Thus, while CO2 capture creates new water demands, CO2 sequestration has the potential to create new supplies. Some or all of the added demand may be offset by treatment and use of the saline waters extracted from geologic formations during CO2 sequestration. Sandia National Laboratories, with guidance and support from the National Energy Technology Laboratory, is creating a model to evaluate the potential for a combined approach to saline formations, as a sink for CO2 and a source for saline waters that can be treated and beneficially reused to serve power plant water demands. This presentation will focus on the magnitude of added U.S. power plant water demand under different CO2 emissions reduction scenarios, and the portion of added demand that might be offset by saline waters extracted during the CO2 sequestration process.

Krumhansl, James Lee; McNemar, Andrea (National Energy Technology Laboratory (NETL), Morgantown, WV); Kobos, Peter Holmes; Roach, Jesse Dillon; Klise, Geoffrey Taylor

2010-12-01T23:59:59.000Z

303

Assessing velocity and impedance changes due to CO2 saturation using interferometry on repeated seismic sources.  

E-Print Network [OSTI]

, Barcelona : Spain (2010)" #12;Introduction The role played by the industrial emission of carbon dioxide (CO2) in climate change has been well documented. Geological sequestration is a process to store CO2

Boyer, Edmond

304

Oxy-coal combustion: stability of coaxial pulverized coal flames in O2/CO2 environments.  

E-Print Network [OSTI]

??Oxy-coal combustion, in which air is replaced by an O2/ CO2 mixture, is one of the few technologies that may allow CO2 capture and sequestration… (more)

Zhang, Jingwei

2010-01-01T23:59:59.000Z

305

Simulation of Coupled Processes of Flow, Transport, and Storage of CO2 in Saline Aquifers  

SciTech Connect (OSTI)

This report is the final scientific one for the award DE- FE0000988 entitled “Simulation of Coupled Processes of Flow, Transport, and Storage of CO2 in Saline Aquifers.” The work has been divided into six tasks. In task, “Development of a Three-Phase Non-Isothermal CO2 Flow Module,” we developed a fluid property module for brine-CO2 mixtures designed to handle all possible phase combinations of aqueous phase, sub-critical liquid and gaseous CO2, supercritical CO2, and solid salt. The thermodynamic and thermophysical properties of brine-CO2 mixtures (density, viscosity, and specific enthalpy of fluid phases; partitioning of mass components among the different phases) use the same correlations as an earlier fluid property module that does not distinguish between gaseous and liquid CO2-rich phases. We verified the fluid property module using two leakage scenarios, one that involves CO2 migration up a blind fault and subsequent accumulation in a secondary “parasitic” reservoir at shallower depth, and another investigating leakage of CO2 from a deep storage reservoir along a vertical fault zone. In task, “Development of a Rock Mechanical Module,” we developed a massively parallel reservoir simulator for modeling THM processes in porous media brine aquifers. We derived, from the fundamental equations describing deformation of porous elastic media, a momentum conservation equation relating mean stress, pressure, and temperature, and incorporated it alongside the mass and energy conservation equations from the TOUGH2 formulation, the starting point for the simulator. In addition, rock properties, namely permeability and porosity, are functions of effective stress and other variables that are obtained from the literature. We verified the simulator formulation and numerical implementation using analytical solutions and example problems from the literature. For the former, we matched a one-dimensional consolidation problem and a two-dimensional simulation of the Mandel-Cryer effect. For the latter, we obtained a good match of temperature and gas saturation profiles, and surface uplift, after injection of hot fluid into a model of a caldera structure. In task, “Incorporation of Geochemical Reactions of Selected Important Species,” we developed a novel mathematical model of THMC processes in porous and fractured saline aquifers, simulating geo-chemical reactions associated with CO2 sequestration in saline aquifers. Two computational frameworks, sequentially coupled and fully coupled, were used to simulate the reactions and transport. We verified capabilities of the THMC model to treat complex THMC processes during CO2 sequestration by analytical solutions and we constructed reactive transport models to analyze the THMC process quantitatively. Three of these are 1D reactive transport under chemical equilibrium, a batch reaction model with equilibrium chemical reactions, and a THMC model with CO2 dissolution. In task “Study of Instability in CO2 Dissolution-Diffusion-Convection Processes,” We reviewed literature related to the study of density driven convective flows and on the instability of CO2 dissolution-diffusion-convection processes. We ran simulations that model the density-driven flow instability that would occur during CO2 sequestration. CO2 diffused through the top of the system and dissolved in the aqueous phase there, increasing its density. Density fingers formed along the top boundary, and coalesced into a few prominent ones, causing convective flow that forced the fluid to the system bottom. These simulations were in two and three dimensions. We ran additional simulations of convective mixing with density contrast caused by variable dissolved CO2 concentration in saline water, modeled after laboratory experiments in which supercritical CO2 was circulated in the headspace above a brine saturated packed sand in a pressure vessel. As CO2 dissolved into the upper part of the saturated sand, liquid phase density increases causing instability and setting off convective mixing. We obtained good agreement

Wu, Yu-Shu; Chen, Zizhong; Kazemi, Hossein; Yin, Xiaolong; Pruess, Karsten; Oldenburg, Curt; Winterfeld, Philip; Zhang, Ronglei

2014-09-30T23:59:59.000Z

306

CO2 flood tests on whole core samples of the Mt. Simon sandstone, Illinois Basin  

SciTech Connect (OSTI)

Geological sequestration of CO2, whether by enhanced oil recovery (EOR), coal-bed methane (CBM) recovery, or saline aquifer injection is a promising near-term sequestration methodology. While tremendous experience exists for EOR, and CBM recovery has been demonstrated in existing fields, saline aquifer injection studies have only recently been initiated. Studies evaluating the availability of saline aquifers suitable for CO2 injection show great potential, however, the long-term fate of the CO2 injected into these ancient aqueous systems is still uncertain. For the subject study, a series of laboratory-scale CO2 flood tests were conducted on whole core samples of the Mt. Simon sandstone from the Illinois Basin. By conducting these tests on whole core samples rather than crushed core, an evaluation of the impact of the CO2 flood on the rock mechanics properties as well as the geochemistry of the core and brine solution has been possible. This empirical data could provide a valuable resource for the validation of reservoir models under development for these engineered CO2 systems.

O'Connor, William K.; Rush, Gilbert E.

2005-09-01T23:59:59.000Z

307

Modelling of CO2 content in the atmosphere until 2300: influence of energy intensity of gross domestic product and carbon intensity of energy  

Science Journals Connector (OSTI)

The study provides a model of CO2 content in the atmosphere based on the global carbon cycle and the Kaya identity. The influences of: 1) energy intensity of GDP; 2) carbon intensity of energy on CO2 trajectories are given under four scenarios. The results from the most optimistic and technologically challenging scenario show that the atmospheric CO2 concentration can stabilise at 610 ppmv. It is also shown that the annual growth rates of atmospheric CO2 peak for all the scenarios before 2100 due to the expected world population peak in 2075 and the large share of fossil fuel energy.

Wojciech M. Budzianowski

2013-01-01T23:59:59.000Z

308

Carbon Sequestration 101  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

R&D Overview R&D Overview Office of Fossil Energy Justin "Judd" R. Swift Asst. Secretary for International Affairs Office of Fossil Energy U.S. Department of Energy 2 nd U.S/China CO 2 Emission Control Science & Technology Symposium May 28-29, 2008 Hangzhou, China Office of Fossil Energy Technological Carbon Management Options Improve Efficiency Sequester Carbon ï‚· Renewables ï‚· Nuclear ï‚· Fuel Switching ï‚· Demand Side ï‚· Supply Side ï‚· Capture & Store ï‚· Enhance Natural Sinks Reduce Carbon Intensity All options needed to: ï‚· Affordably meet energy demand ï‚· Address environmental objectives Office of Fossil Energy DOE's Sequestration Program Structure Infrastructure Regional Carbon Sequestration

309

NETL: NATCARB - CO2 Storage Formations  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Storage Formations Storage Formations NATCARB CO2 Storage Formations CO2 Storage Resource Methodology NATCARB Viewer The NATCARB Viewer is available at: http://www.natcarbviewer.com. 2012 Atlas IV DOE's Regional Carbon Sequestration Partnerships (RCSPs) were charged with providing a high-level, quantitative estimate of carbon dioxide (CO2) storage resource available in subsurface environments of their regions. Environments considered for CO2 storage were categorized into five major geologic systems: oil and gas reservoirs, unmineable coal areas, saline formations, shale, and basalt formations. Where possible, CO2 storage resource estimates have been quantified for oil and gas reservoirs, saline formations, and unmineable coal in the fourth edition of the United States Carbon Utilization and Storage Atlas (Atlas IV). Shale and basalt

310

Modeling the resolution of inexpensive, novel non-seismic geophysical monitoring tools to monitor CO2 injection into coal beds  

E-Print Network [OSTI]

Tomutsa, L. , 2005, Coalbed methane laboratory experiments,2 Sequestration in Coalbed Methane Reservoirs of the Black2006 International Coalbed Methane Symposium Proceedings,

Gasperikova, E.

2010-01-01T23:59:59.000Z

311

NETL Sequestration Workshop  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Initial Set of Working Hypotheses Concerning Some Chemical and Initial Set of Working Hypotheses Concerning Some Chemical and Physical Phenomena That Occur When CO2 Is Injected Into a Coal Bed Curt M. White, National Energy Technology Laboratory The presentation will describe some of the technological impediments to performing sequestration of CO2 in deep unmineable coalbeds with concomitant enhanced coalbed methane recovery on a wide scale. The impediments include: 1) developing techniques to handle millions of gallons of produced water; 2) a lack of knowledge concerning the methane content of deep unmineable coal seams; and 3) a lack of understanding of some of the chemical and physical phenomena that occur when CO2 is injected into a coalbed. This includes a lack of knowledge concerning the flow of CO2 in coal, the uncertain

312

Southwest Regional Partnership on Carbon Sequestration Phase II  

SciTech Connect (OSTI)

The Southwest Regional Partnership (SWP) on Carbon Sequestration designed and deployed a medium-scale field pilot test of geologic carbon dioxide (CO2) sequestration in the Aneth oil field. Greater Aneth oil field, Utah's largest oil producer, was discovered in 1956 and has produced over 455 million barrels of oil (72 million m3). Located in the Paradox Basin of southeastern Utah, Greater Aneth is a stratigraphic trap producing from the Pennsylvanian Paradox Formation. Because it represents an archetype oil field of the western U.S., Greater Aneth was selected as one of three geologic pilots to demonstrate combined enhanced oil recovery (EOR) and CO2 sequestration under the auspices of the SWP on Carbon Sequestration, sponsored by the U.S. Department of Energy. The pilot demonstration focuced on the western portion of the Aneth Unit as this area of the field was converted from waterflood production to CO2 EOR starting in late 2007. The Aneth Unit is in the northwestern part of the field and has produced 149 million barrels (24 million m3) of the estimated 450 million barrels (71.5 million m3) of the original oil in place - a 33% recovery rate. The large amount of remaining oil makes the Aneth Unit ideal to demonstrate both CO2 storage capacity and EOR by CO2 flooding. This report summarizes the geologic characterization research, the various field monitoring tests, and the development of a geologic model and numerical simulations conducted for the Aneth demonstration project. The Utah Geological Survey (UGS), with contributions from other Partners, evaluated how the surface and subsurface geology of the Aneth Unit demonstration site will affect sequestration operations and engineering strategies. The UGS-research for the project are summarized in Chapters 1 through 7, and includes (1) mapping the surface geology including stratigraphy, faulting, fractures, and deformation bands, (2) describing the local Jurassic and Cretaceous stratigraphy, (3) mapping the Desert Creek zone reservoir, Gothic seal, and overlying aquifers, (4) characterizing the depositional environments and diagenetic events that produced significant reservoir heterogeneity, (5) describing the geochemical, petrographic, and geomechanical properties of the seal to determine the CO2 or hydrocarbon column it could support, and (6) evaluating the production history to compare primary production from vertical and horizontal wells, and the effects of waterflood and wateralternating- gas flood programs. The field monitoring demonstrations were conducted by various Partners including New Mexico Institute of Mining and Technology, University of Utah, National Institute of Advanced Industrial Science and Technology, Japan, Los Alamos National Laboratory and Cambridge Geosciences. The monitoring tests are summarized in Chapters 8 through 12, and includes (1) interwell tracer studies during water- and CO2-flood operations to characterize tracer behavoirs in anticipation of CO2-sequestration applications, (2) CO2 soil flux monitoring to measure background levels and variance and assess the sensitivity levels for CO2 surface monitoring, (3) testing the continuous monitoring of self potential as a means to detect pressure anomalies and electrochemical reaction due to CO2 injection, (4) conducting time-lapse vertical seismic profiling to image change near a CO2 injection well, and (5) monitoring microseismicity using a downhole string of seismic receivers to detect fracture slip and deformation associated with stress changes. Finally, the geologic modeling and numerical simulation study was conducted by researcher at the University of Utah. Chapter 13 summarizes their efforts which focused on developing a site-specific geologic model for Aneth to better understand and design CO2 storage specifically tailored to oil reservoirs.

James Rutledge

2011-02-01T23:59:59.000Z

313

Rigorous Screening Technology for Identifying Suitable CO2 Storage Sites II  

SciTech Connect (OSTI)

This report serves as the final technical report and users manual for the 'Rigorous Screening Technology for Identifying Suitable CO2 Storage Sites II SBIR project. Advanced Resources International has developed a screening tool by which users can technically screen, assess the storage capacity and quantify the costs of CO2 storage in four types of CO2 storage reservoirs. These include CO2-enhanced oil recovery reservoirs, depleted oil and gas fields (non-enhanced oil recovery candidates), deep coal seems that are amenable to CO2-enhanced methane recovery, and saline reservoirs. The screening function assessed whether the reservoir could likely serve as a safe, long-term CO2 storage reservoir. The storage capacity assessment uses rigorous reservoir simulation models to determine the timing, ultimate storage capacity, and potential for enhanced hydrocarbon recovery. Finally, the economic assessment function determines both the field-level and pipeline (transportation) costs for CO2 sequestration in a given reservoir. The screening tool has been peer reviewed at an Electrical Power Research Institute (EPRI) technical meeting in March 2009. A number of useful observations and recommendations emerged from the Workshop on the costs of CO2 transport and storage that could be readily incorporated into a commercial version of the Screening Tool in a Phase III SBIR.

George J. Koperna Jr.; Vello A. Kuuskraa; David E. Riestenberg; Aiysha Sultana; Tyler Van Leeuwen

2009-06-01T23:59:59.000Z

314

Terrestrial Sequestration Program  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

TerresTrial sequesTraTion Program TerresTrial sequesTraTion Program Capture and Storage of Carbon in Terrestrial Ecosystems Background Clean, affordable energy is essential for U.S. prosperity and security in the 21st century. More than half of the electricity currently generated in the United States comes from coal-fired boilers, and there is little indication that this percentage will diminish through 2020 and beyond. In addition, the use of coal for electricity generation is projected to more than double in developing nations by 2020. This ever growing demand for fossil-fuel-based power and the consequential rise in atmospheric carbon dioxide (CO 2 ) concentrations requires innovative methods to capture and store CO 2 . Terrestrial ecosystems, which include both soil and vegetation, are widely recognized

315

A model comparison initiative for a CO2 injection field test: An introduction to Sim-SEQ  

E-Print Network [OSTI]

in the water leg of a CO 2 -EOR field with a strong waterwater leg of an active CO 2 -EOR field with a strong waterthe presence of an active EOR operation nearby may also

Mukhopadhyay, S.

2013-01-01T23:59:59.000Z

316

Modeling the resolution of inexpensive, novel non-seismic geophysical monitoring tools to monitor CO2 injection into coal beds  

E-Print Network [OSTI]

Plasynski, S. , 2008, Advancing Coal-Based Power Generationto monitor CO 2 injection into Coal Beds as a part of theanalysis for CO 2 movement in coal beds was based on the

Gasperikova, E.

2010-01-01T23:59:59.000Z

317

Mathematical models as tools for probing long-term safety of CO2 storage  

SciTech Connect (OSTI)

Subsurface reservoirs being considered for storing CO{sub 2} include saline aquifers, oil and gas reservoirs, and unmineable coal seams (Baines and Worden, 2004; IPCC, 2005). By far the greatest storage capacity is in saline aquifers (Dooley et al., 2004), and our discussion will focus primarily on CO{sub 2} storage in saline formations. Most issues for safety and security of CO{sub 2} storage arise from the fact that, at typical temperature and pressure conditions encountered in terrestrial crust, CO{sub 2} is less dense than aqueous fluids. Accordingly, CO{sub 2} will experience an upward buoyancy force in most subsurface environments, and will tend to migrate upwards whenever (sub-)vertical permeable pathways are available, such as fracture zones, faults, or improperly abandoned wells (Bachu, 2008; Pruess, 2008a, b; Tsang et al., 2008). CO{sub 2} injection will increase fluid pressures in the target formation, thereby altering effective stress distributions, and potentially triggering movement along fractures and faults that could increase their permeability and reduce the effectiveness of a caprock in containing CO{sub 2} (Rutqvist et al., 2008; Chiaramonte et al., 2008). Induced seismicity as a consequence of fluid injection is also a concern (Healy et al., 1968; Raleigh et al., 1976; Majer et al., 2007). Dissolution of CO{sub 2} in the aqueous phase generates carbonic acid, which may induce chemical corrosion (dissolution) of minerals with associated increase in formation porosity and permeability, and may also mediate sequestration of CO{sub 2} as solid carbonate (Gaus et al., 2008). Chemical dissolution of caprock minerals could promote leakage of CO{sub 2} from a storage reservoir (Gherardi et al., 2007). Chemical dissolution and geomechanical effects could reinforce one another in compromising CO{sub 2} containment. Additional issues arise from the potential of CO{sub 2} to mobilize hazardous chemical species (Kharaka et al., 2006), and from migration of the large amounts of brine that would be mobilized by industrial-scale CO{sub 2} injection (Nicot et al., 2008; Birkholzer et al., 2008a, b).

Pruess, Karsten; Birkholzer, Jens; Zhou, Quanlin

2009-02-01T23:59:59.000Z

318

Drake Passage Oceanic pCO2: Evaluating CMIP5 Coupled CarbonClimate Models Using in situ Observations  

E-Print Network [OSTI]

net uptake of anthropogenic and natural CO2 is thus an important factor controlling future CO2 levels the sea-to-air CO2 flux but also upwells DIC-rich water to the surface and drives strong equator- ward. DIC and alkalinity are controlled by the air­sea gas exchange, horizontal and vertical transport

Sprintall, Janet

319

Rate-Based Modeling of Reactive Absorption of CO2 and H2S into Aqueous Methyldiethanolamine  

E-Print Network [OSTI]

in the liquid phase. This framework was applied to the selective absorption of H2S from fuel gas containing CO2 primarily by physical absorption. Gas-film resistance is never significant for CO2 absorption. For H2S enhancement factors for the gas-liquid reactions. In the application to the removal of CO2 using alkanolamines

Rochelle, Gary T.

320

Drake Passage Oceanic pCO2: Evaluating CMIP5 Coupled Carbon–Climate Models Using in situ Observations  

Science Journals Connector (OSTI)

Surface water partial pressure of CO2 (pCO2) variations in Drake Passage are examined using decade-long underway shipboard measurements. North of the Polar Front (PF), the observed pCO2 shows a seasonal cycle that peaks annually in August and ...

ChuanLi Jiang; Sarah T. Gille; Janet Sprintall; Colm Sweeney

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "modeling co2 sequestration" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

Reductive Sequestration of Carbon Dioxide  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Reductive Sequestration of Carbon Dioxide Reductive Sequestration of Carbon Dioxide T. Mill (ted.mill@sri.com; 650-859-3605) SRI, PS273 333 Ravenswood Menlo Park, CA 94025 D. Ross (dsross3@yahoo.com; 650-327-3842) U.S. Geological Survey, Bldg 15 MS 999 345 Middlefield Rd. Menlo Park, CA 94025 Introduction The United States currently meets 80% of its energy needs by burning fossil fuels to form CO 2 . The combustion-based production of CO 2 has evolved into a major environmental challenge that extends beyond national borders and the issue has become as politically charged as it is technologically demanding. Whereas CO 2 levels in the atmosphere had remained stable over the 10,000 years preceeding the industrial revolution, that event initiated rapid growth in CO 2 levels over the past 150 years (Stevens, 2000). The resulting accelerating accumulation of

322

Weyburn Carbon Dioxide Sequestration Project  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Weyburn Carbon DioxiDe SequeStration Weyburn Carbon DioxiDe SequeStration ProjeCt Background Since September 2000, carbon dioxide (CO 2 ) has been transported from the Dakota Gasification Plant in North Dakota through a 320-km pipeline and injected into the Weyburn oilfield in Saskatchewan, Canada. The CO 2 has given the Weyburn field, discovered 50 years ago, a new life: 155 million gross barrels of incremental oil are slated to be recovered by 2035 and the field is projected to be able to store 30 million tonnes of CO 2 over 30 years. CO 2 injection began in October of 2005 at the adjacent Midale oilfield, and an additional 45-60 million barrels of oil are expected to be recovered during 30 years of continued operation. A significant monitoring project associated with the Weyburn and Midale commercial

323

Midwest Geological Sequestration Consortium--Validation Phase  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Geological Sequestration Geological Sequestration Consortium-Validation Phase Background The U.S. Department of Energy (DOE) has selected seven partnerships, through its Regional Carbon Sequestration Partnership (RCSP) initiative, to determine the best approaches for capturing and permanently storing carbon dioxide (CO 2 ), a greenhouse gas (GHG) which can contribute to global climate change. The RCSPs are made up of state and local agencies, coal companies, oil and gas companies, electric utilities,

324

Leakage Risk Assessment of CO2 Transportation by Pipeline at the Illinois Basin Decatur Project, Decatur, Illinois  

E-Print Network [OSTI]

of CO 2 associated with carbon capture & storage projects:2 transportation for carbon capture and storage: sublimationin Gerard, W.A. , ed. , Carbon Capture and Sequestration

Mazzoldi, A.

2014-01-01T23:59:59.000Z

325

Investigation of thermal effect on the evolution of coal permeability under the influence of CO2 injection.  

E-Print Network [OSTI]

??[Truncated abstract] CO2 is normally injected at low or high temperatures into the targeted coal seams for geological sequestration. Under these injection conditions, coal matrix… (more)

Qu, Hongyan

2013-01-01T23:59:59.000Z

326

Microsoft Word - TURBO EXPO CO2 draft  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

MAN TURBO MAN TURBO CO2 Compression Challenges presented on May 15, 2007 at the ASME Turbo Expo, Montreal, CO2 Compression Panel By Pierre L. Bovon, MAN TURBO Calgary (pierre.bovon@ca.manturbo.com, tel. +403 233 7151) And Dr. Rolf Habel, MAN TURBO Berlin (rolf.habel@de.manturbo.com, tel. +49 304 301 2224) CO2 has been used for a very long time, for instance in the food industry, and most applications have required it to be compressed. For Sequestration or Enhanced Oil Recovery, the traditional approach to CO2 compression has been to use high-speed reciprocating compressors. The main reasons are: - Flexibility with regards to pressure ratio, and capacity (if equipped with variable speed drive or valve unloaders). - Short delivery times, since many recip. packagers dispose of a selection of frames

327

081001 CA CO2 Storage Pilot  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

California California CO2 Storage Pilot Regional Carbon Sequestration Partnerships Initiative Review Meeting Pittsburgh, Pennsylvania October 7, 2008 John Henry Beyer, Ph.D. WESTCARB Program Manager, Geophysicist 510-486-7954, jhbeyer@lbl.gov Lawrence Berkeley National Laboratory Earth Sciences Division, MS 90-1116 Berkeley, CA 94720 2 Industry Partner: Shell Oil Company Committed to reducing global CO2 emissions Extensive technical expertise in: - Geologic evaluation - Well log analysis - Porosity and permeability evaluation - Geophysics - Deep well drilling - CO2 injection A welcome industry partner 3 - Bevilacqua-Knight, Inc. (DOE/PIER) - Lawrence Berkeley National Lab (PIER) - Sandia Technologies, LLC (DOE/PIER) - Terralog (DOE) Northern California CO2 Storage Pilot Contracting and Funding Flow

328

NETL: NATCARB - CO2 Stationary Sources  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Stationary Sources Stationary Sources NATCARB CO2 Stationary Sources CO2 Stationary Source Emission Estimation Methodology NATCARB Viewer The NATCARB Viewer is available at: http://www.natcarbviewer.com. 2012 Atlas IV DOE's Regional Carbon Sequestration Partnerships (RCSPs) employed carbon dioxide (CO2) emissions estimate methodologies that are based on the most readily available representative data for that particular industry type within the respective partnership area. Carbon dioxide emissions data provided by databases (for example, eGRID, IEA GHG, or NATCARB) were the first choice for all of the RCSPs, both for identifying major CO2 stationary sources and for providing reliable emission estimations. Databases are considered to contain reliable and accurate data obtained

329

Carbon Sequestration via Mineral Carbonation: Overview and Assessment  

E-Print Network [OSTI]

1 Carbon Sequestration via Mineral Carbonation: Overview and Assessment 14 March 2002 Howard Herzog overview and assessment of carbon sequestration by mineral carbonation (referred to as "mineral sequestration R&D. The first is that carbonates have a lower energy state than CO2. Therefore, at least

330

Carbon dioxide sequestration: how much and when? Klaus Keller & David McInerney & David F. Bradford  

E-Print Network [OSTI]

Carbon dioxide sequestration: how much and when? Klaus Keller & David McInerney & David F. Bradford + Business Media B.V. 2008 Abstract Carbon dioxide (CO2) sequestration has been proposed as a key component fossil fuel requirement of CO2 sequestration, and the growth rate of carbon taxes. In this analytical

Keller, Klaus

331

Properties of Mutants of Synechocystis sp. Strain PCC 6803 Lacking Inorganic Carbon Sequestration Systems  

E-Print Network [OSTI]

Properties of Mutants of Synechocystis sp. Strain PCC 6803 Lacking Inorganic Carbon SequestrationA is the only active inorganic carbon sequestration system showed low activity of HCO3 ­ uptake and grew under the significance of carbon sequestration in dissipating excess light energy. Keywords: CO2 and HCO3 � uptake -- CO2

Roegner, Matthias

332

Coupling geothermal energy capture with carbon dioxide sequestration in naturally permeable, porous geologic formations  – a novel approach for expanding geothermal energy utilization.  

E-Print Network [OSTI]

??This thesis research presents a new method to harness geothermal energy by combining it with geologic carbon dioxide (CO2) sequestration. CO2 is injected into deep,… (more)

Randolph, Jimmy Bryan

2011-01-01T23:59:59.000Z

333

Reducing risk in basin scale sequestration: A Bayesian model selection framework for improving detection  

E-Print Network [OSTI]

Geological CO[subscript 2] sequestration is a key technology for mitigating atmospheric greenhouse gas concentrations while providing low carbon energy. Deployment of sequestration at scales necessary for a material ...

Seto, C.J.

334

Experiment-based modeling of geochemical interactions in CO2-based geothermal systems  

E-Print Network [OSTI]

and effects on fluid and heat transfer, and (3) determinesome favorable fluid dynamics and heat transfer properties2008) for modeling heat transfer and fluid dynamics of a CO

Jung, Y.

2014-01-01T23:59:59.000Z

335

Dynamic Modeling and Validation of a Precombustion CO2 Capture Plant for Control Design  

Science Journals Connector (OSTI)

The models have been implemented by means of the Modelica language into an open source software library. ... Fritzson, P. Principles of Object-Oriented Modeling and Simulation with Modelica 3.3: A Cyber-Physical Approach; Wiley-IEEE Press: Hoboken, NJ, in press. ...

Carsten Trapp; Francesco Casella; Piero Colonna

2014-07-23T23:59:59.000Z

336

Integrated modeling of CO2 storage and leakage scenarios including transitions between super- and sub-critical conditions, and phase change between liquid and gaseous CO2  

SciTech Connect (OSTI)

Storage of CO{sub 2} in saline aquifers is intended to be at supercritical pressure and temperature conditions, but CO{sub 2} leaking from a geologic storage reservoir and migrating toward the land surface (through faults, fractures, or improperly abandoned wells) would reach subcritical conditions at depths shallower than 500-750 m. At these and shallower depths, subcritical CO{sub 2} can form two-phase mixtures of liquid and gaseous CO{sub 2}, with significant latent heat effects during boiling and condensation. Additional strongly non-isothermal effects can arise from decompression of gas-like subcritical CO{sub 2}, the so-called Joule-Thomson effect. Integrated modeling of CO{sub 2} storage and leakage requires the ability to model non-isothermal flows of brine and CO{sub 2} at conditions that range from supercritical to subcritical, including three-phase flow of aqueous phase, and both liquid and gaseous CO{sub 2}. In this paper, we describe and demonstrate comprehensive simulation capabilities that can cope with all possible phase conditions in brine-CO{sub 2} systems. Our model formulation includes: (1) an accurate description of thermophysical properties of aqueous and CO{sub 2}-rich phases as functions of temperature, pressure, salinity and CO{sub 2} content, including the mutual dissolution of CO{sub 2} and H{sub 2}O; (2) transitions between super- and subcritical conditions, including phase change between liquid and gaseous CO{sub 2}; (3) one-, two-, and three-phase flow of brine-CO{sub 2} mixtures, including heat flow; (4) non-isothermal effects associated with phase change, mutual dissolution of CO{sub 2} and water, and (de-) compression effects; and (5) the effects of dissolved NaCl, and the possibility of precipitating solid halite, with associated porosity and permeability change. Applications to specific leakage scenarios demonstrate that the peculiar thermophysical properties of CO{sub 2} provide a potential for positive as well as negative feedbacks on leakage rates, with a combination of self-enhancing and self-limiting effects. Lower viscosity and density of CO{sub 2} as compared to aqueous fluids provides a potential for self-enhancing effects during leakage, while strong cooling effects from liquid CO{sub 2} boiling into gas, and from expansion of gas rising towards the land surface, act to self-limit discharges. Strong interference between fluid phases under three-phase conditions (aqueous - liquid CO{sub 2} - gaseous CO{sub 2}) also tends to reduce CO{sub 2} fluxes. Feedback on different space and time scales can induce non-monotonic behavior of CO{sub 2} flow rates.

Pruess, K.

2011-05-15T23:59:59.000Z

337

A Statistical Model to Assess Indirect CO2 Emissions of the UAE Residential Sector  

E-Print Network [OSTI]

. Determination of household energy using ?fingerprints? from energy billing data. Energy Research 10(4), pp: 393?405. [5] Snakin JPA, 2000. An engineering model for heating energy and emission assessment The case of North Karelia, Finland. Applied Energy...

Radhi, H.; Fikry, F.

2010-01-01T23:59:59.000Z

338

A fixed-bed reactor modeling study on the methanation of CO2  

Science Journals Connector (OSTI)

Abstract The methanation of carbon dioxide has gained renewed interest during the last years as a possible technology to synthesize a feasible chemical energy carrier. This modeling study aims at a basic understanding of the aspects relevant for designing an externally cooled fixed-bed reactor for the methanation of a pure, stoichiometric feed gas. It is shown that the reaction rates and the exothermicity (?H° = ?165 kJ/mol) prevent a fixed-bed reactor of technical dimensions to be operated at high conversions without runaway of the reactor. The model predictions of differently detailed pseudo-homogeneous reactor models and a heterogeneous reactor model where the intraparticle transport of mass is described according to a dusty-gas approach are compared to assess the needed level of detail in terms of modeling the heat transfer, fluid flow characteristics and transport resistances on the pellet scale. Under specific conditions, intraparticle mass transfer and external heat transfer need to be considered for describing the temperature and concentration profiles adequately. The study is completed by modeling a fixed-bed membrane reactor as an example of a structured reactor that offers improved temperature control by separated and controlled feeding of hydrogen and carbon dioxide.

David Schlereth; Olaf Hinrichsen

2014-01-01T23:59:59.000Z

339

Experimental Study of Carbon Sequestration Reactions Controlled  

E-Print Network [OSTI]

Experimental Study of Carbon Sequestration Reactions Controlled by the Percolation of CO2-Rich. Carbonation of ultramafic rocks in geological reservoirs is, in theory, the most efficient way to trap CO2 irreversibly; however, possible feedback effects between carbonation reactions and changes in the reservoir

Demouchy, Sylvie

340

Evaluating impacts of CO2 gas intrusion into a confined sandstone aquifer: Experimental results  

SciTech Connect (OSTI)

Deep subsurface storage and sequestration of CO2 has been identified as a potential mitigation technique for rising atmospheric CO2 concentrations. Sequestered CO2 represents a potential risk to overlying aquifers if the CO2 leaks from the deep storage reservoir. Experimental and modeling work is required to evaluate potential risks to groundwater quality and develop a systematic understanding of how CO2 leakage may cause important changes in aquifer chemistry and mineralogy by promoting dissolution/precipitation, adsorption/desorption, and redox reactions. Sediments from the High Plains aquifer in Kansas, United States, were used in this investigation, which is part of the National Risk Assessment Partnership Program sponsored by the US Department of Energy. This aquifer was selected to be representative of consolidated sand and gravel/sandstone aquifers overlying potential CO2 sequestration repositories within the continental US. In this paper, we present results from batch experiments conducted at room temperature and atmospheric pressure with four High Plains aquifer sediments. Batch experiments simulate sudden, fast, and short-lived releases of the CO2 gas as would occur in the case of well failure during injection. Time-dependent release of major, minor, and trace elements were determined by analyzing the contacting solutions. Characterization studies demonstrated that the High Plains aquifer sediments were abundant in quartz and feldspars, and contained about 15 to 20 wt% montmorillonite and up to 5 wt% micas. Some of the High Plains aquifer sediments contained no calcite, while others had up to about 7 wt% calcite. The strong acid extraction tests confirmed that in addition to the usual elements present in most soils, rocks, and sediments, the High Plains aquifer sediments had appreciable amounts of As, Cd, Pb, Cu, and occasionally Zn, which potentially may be mobilized from the solid to the aqueous phase during or after exposure to CO2. However, the results from the batch experiments showed that the High Plains sediments mobilized only low concentrations of trace elements (potential contaminants), which were detected occasionally in the aqueous phase during these experiments. Importantly, these occurrences were more frequent in the calcite-free sediment. Results from these investigations provide useful information to support site selection, risk assessment, and public education efforts associated with geological CO2 storage and sequestration.

Qafoku, Nikolla; Lawter, Amanda R.; Shao, Hongbo; Wang, Guohui; Brown, Christopher F.

2014-12-31T23:59:59.000Z

Note: This page contains sample records for the topic "modeling co2 sequestration" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

A Simplified 1-D Model for Calculating CO2 Leakage through Conduits  

SciTech Connect (OSTI)

In geological CO{sub 2} storage projects, a cap rock is generally needed to prevent CO{sub 2} from leaking out of the storage formation. However, the injected CO{sub 2} may still encounter some discrete flow paths such as a conductive well or fault (here referred to as conduits) through the cap rock allowing escape of CO{sub 2} from the storage formation. As CO{sub 2} migrates upward, it may migrate into the surrounding formations. The amount of mass that is lost to the formation is called attenuation. This report describes a simplified model to calculate the CO{sub 2} mass flux at different locations of the conduit and the amount of attenuation to the surrounding formations. From the comparison among the three model results, we can conclude that the steady-state conduit model (SSCM) provides a more accurate solution than the PMC at a given discretization. When there is not a large difference between the permeability of the surrounding formation and the permeability of the conduits, and there is leak-off at the bottom formation (the formation immediately above the CO{sub 2} plume), a fine discretization is needed for an accurate solution. Based on this comparison, we propose to use the SSCM in the rapid prototype for now given it does not produce spurious oscillations, and is already in FORTRAN and therefore can be easily made into a dll for use in GoldSim.

Zhang, Y.; Oldenburg, C.M.

2011-02-15T23:59:59.000Z

342

Workshop on Carbon Sequestration Science -- Economics  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Economics Economics Howard Herzog MIT Energy Laboratory May 22, 2001 Cost Components * Capture S Separation S Compression * Sequestration S Transport S Injection Approach * Extract cost data from literature studies S Includes capture and compression S Excludes transportation and injection * Adjust cost data to common economic basis * Construct composite cost model * Conduct sensitivity analyses and other studies with the composite cost model Methodology for Analysis of Economic Studies 7210 Btu/kWh 2884 x 10 6 Btu/hr CO 2 to atmosphere 270 tonnes/hr (0.674 kg/kWh) 400 MW a) Reference Plant (No Capture) 9173 Btu/kWh 2884 x 10 6 Btu/hr 2 CO to atmosphere 28 tonnes/hr (0.088 kg/kWh) 314 MW 242 tonnes/hr (0.769 kg/kWh) b) Capture Plant CO 2 captured CO 2 Captured vs. CO 2 Avoided 0 0.2 0.4 0.6 0.8 1 Reference Plant Capture Plant

343

Environmental Enterprise: Carbon Sequestration using Texaco Gasification Process  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Environmental Enterprise: Carbon Sequestration using Texaco Carbon Sequestration using Texaco Gasification Process Gasification Process First National Conference on Carbon Sequestration First National Conference on Carbon Sequestration May 16, 2001 May 16, 2001 Jeff Seabright Jeff Seabright Texaco Inc. Texaco Inc. Presentation Highlights Presentation Highlights * * Texaco and climate change Texaco and climate change * * Introduction to gasification Introduction to gasification * * Environmental benefits of gasification Environmental benefits of gasification * * CO CO 2 2 capture & sequestration capture & sequestration * * Challenges going forward Challenges going forward Texaco's Climate Change Policy Texaco's Climate Change Policy * * Know enough to take action now Know enough to take action now

344

Final report on "Modeling Diurnal Variations of California Land Biosphere CO2 Fluxes"  

SciTech Connect (OSTI)

In Mediterranean climates, the season of water availability (winter) is out of phase with the season of light availability and atmospheric demand for moisture (summer). Multi-year half-hourly observations of sap flow velocities in 26 evergreen trees in a small watershed in Northern California show that different species of evergreen trees have different seasonalities of transpiration: Douglas-firs respond immediately to the first winter rain, while Pacific madrones have peak transpiration in the dry summer. Using these observations, we have derived species-specific parameterization of normalized sap flow velocities in terms of insolation, vapor pressure deficit and near-surface soil moisture. A simple 1-D boundary layer model showed that afternoon temperatures may be higher by 1 degree Celsius in an area with Douglas-firs than with Pacific madrones. The results point to the need to develop a new representation of subsurface moisture, in particular pools beneath the organic soil mantle and the vadose zone. Our ongoing and future work includes coupling our new parameterization of transpiration with new representation of sub-surface moisture in saprolite and weathered bedrock. The results will be implemented in a regional climate model to explore vegetation-climate feedbacks, especially in the dry season.

Fung, Inez

2014-07-28T23:59:59.000Z

345

Low-cost multispectral vegetation imaging system for detecting leaking CO2 gas  

E-Print Network [OSTI]

Low-cost multispectral vegetation imaging system for detecting leaking CO2 gas Justin A. Hogan,1 sequestration sites for possible leaks of the CO2 gas from underground reservoirs, a low-cost multispectral are then flagged for closer inspection with in-situ CO2 sensors. The system is entirely self

Shaw, Joseph A.

346

Production of Hydrogen and Electricity from Coal with CO2 Capture  

E-Print Network [OSTI]

fuels · H2 (and CO2) distribution · H2 utilization (e.g. fuel cells, combustion) · Princeton energy carriers are needed: electricity and hydrogen. · If CO2 sequestration is viable, fossil fuel1 Production of Hydrogen and Electricity from Coal with CO2 Capture Princeton University: Tom

347

Case studies of the application of the Certification Framework to two geologic carbon sequestration sites  

SciTech Connect (OSTI)

We have developed a certification framework (CF) for certifying that the risks of geologic carbon sequestration (GCS) sites are below agreed-upon thresholds. The CF is based on effective trapping of CO2, the proposed concept that takes into account both the probability and impact of CO2 leakage. The CF uses probability estimates of the intersection of conductive faults and wells with the CO2 plume along with modeled fluxes or concentrations of CO2 as proxies for impacts to compartments (such as potable groundwater) to calculate CO2 leakage risk. In order to test and refine the approach, we applied the CF to (1) a hypothetical large-scale GCS project in the Texas Gulf Coast, and (2) WESTCARB's Phase III GCS pilot in the southern San Joaquin Valley, California.

Oldenburg, Curtis M.; Nicot, J.-P.; Bryant, S.L.

2008-11-01T23:59:59.000Z

348

Synthesis and Evaluation of CO2 Thickeners Designed with Molecular Modeling  

SciTech Connect (OSTI)

The objective of this research was to use molecular modeling techniques, coupled with our prior experimental results, to design, synthesize and evaluate inexpensive, non-fluorous carbon dioxide thickening agents. The first type of thickener that was considered was associating polymers. Typically, these thickeners are copolymers that contain a highly CO{sub 2}-philic monomer, and a small concentration of a CO{sub 2}-phobic associating monomer. Yale University was solely responsible for the synthesis of a second type of thickener; small, hydrogen bonding compounds. These molecules have a core that contains one or more hydrogen-bonding groups, such as urea or amide groups. Non-fluorous, CO{sub 2}-philic functional groups were attached to the hydrogen bonding core of the compound to impart CO{sub 2} stability and macromolecular stability to the linear 'stack' of these compounds. The third type of compound initially considered for this investigation was CO{sub 2}-soluble surfactants. These surfactants contain conventional ionic head groups and composed of CO{sub 2}-philic oligomers (short polymers) or small compounds (sugar acetates) previously identified by our research team. Mobility reduction could occur as these surfactant solutions contacted reservoir brine and formed mobility control foams in-situ. The vast majority of the work conducted in this study was devoted to the copolymeric thickeners and the small hydrogen-bonding thickeners; these thickeners were intended to dissolve completely in CO{sub 2} and increase the fluid viscosity. A small but important amount of work was done establishing the groundwork for CO{sub 2}-soluble surfactants that reduced mobility by generating foams in-situ as the CO{sub 2}+surfactant solution mixed with in-situ brine.

Robert Enick; Erick Beckman; J. Karl Johnson

2009-08-31T23:59:59.000Z

349

Modeling basin- and plume-scale processes of CO2 storage for full-scale deployment  

SciTech Connect (OSTI)

Integrated modeling of basin- and plume-scale processes induced by full-scale deployment of CO{sub 2} storage was applied to the Mt. Simon Aquifer in the Illinois Basin. A three-dimensional mesh was generated with local refinement around 20 injection sites, with approximately 30 km spacing. A total annual injection rate of 100 Mt CO{sub 2} over 50 years was used. The CO{sub 2}-brine flow at the plume scale and the single-phase flow at the basin scale were simulated. Simulation results show the overall shape of a CO{sub 2} plume consisting of a typical gravity-override subplume in the bottom injection zone of high injectivity and a pyramid-shaped subplume in the overlying multilayered Mt. Simon, indicating the important role of a secondary seal with relatively low-permeability and high-entry capillary pressure. The secondary-seal effect is manifested by retarded upward CO{sub 2} migration as a result of multiple secondary seals, coupled with lateral preferential CO{sub 2} viscous fingering through high-permeability layers. The plume width varies from 9.0 to 13.5 km at 200 years, indicating the slow CO{sub 2} migration and no plume interference between storage sites. On the basin scale, pressure perturbations propagate quickly away from injection centers, interfere after less than 1 year, and eventually reach basin margins. The simulated pressure buildup of 35 bar in the injection area is not expected to affect caprock geomechanical integrity. Moderate pressure buildup is observed in Mt. Simon in northern Illinois. However, its impact on groundwater resources is less than the hydraulic drawdown induced by long-term extensive pumping from overlying freshwater aquifers.

Zhou, Q.; Birkholzer, J.T.; Mehnert, E.; Lin, Y.-F.; Zhang, K.

2009-08-15T23:59:59.000Z

350

Pacific Northwest rangeland carbon sequestration.  

E-Print Network [OSTI]

??This paper models the supply curve of carbon sequestration on Pacific Northwest rangelands. Rangeland managers have the ability to sequester carbon in agricultural soils by… (more)

Wiggins, Seth T.

2012-01-01T23:59:59.000Z

351

PLAINS CO2 REDUCTION (PCOR) PARTNERSHIP  

SciTech Connect (OSTI)

During the period of October 1, 2003, through September 30, 2005, the Plains CO2 Reduction (PCOR) Partnership, identified geologic and terrestrial candidates for near-term practical and environmentally sound carbon dioxide (CO2) sequestration demonstrations in the heartland of North America. The PCOR Partnership region covered nine states and three Canadian provinces. The validation test candidates were further vetted to ensure that they represented projects with (1) commercial potential and (2) a mix that would support future projects both dependent and independent of CO2 monetization. This report uses the findings contained in the PCOR Partnership's two dozen topical reports and half-dozen fact sheets as well as the capabilities of its geographic information system-based Decision Support System to provide a concise picture of the sequestration potential for both terrestrial and geologic sequestration in the PCOR Partnership region based on assessments of sources, sinks, regulations, deployment issues, transportation, and capture and separation. The report also includes concise action plans for deployment and public education and outreach as well as a brief overview of the structure, development, and capabilities of the PCOR Partnership. The PCOR Partnership is one of seven regional partnerships under Phase I of the U.S. Department of Energy National Energy Technology Laboratory's Regional Carbon Sequestration Partnership program. The PCOR Partnership, comprising 49 public and private sector members, is led by the Energy & Environmental Research Center at the University of North Dakota. The international PCOR Partnership region includes the Canadian provinces of Alberta, Saskatchewan, and Manitoba and the states of Montana (part), Wyoming (part), North Dakota, South Dakota, Nebraska, Missouri, Iowa, Minnesota, and Wisconsin.

Edward N. Steadman; Daniel J. Daly; Lynette L. de Silva; John A. Harju; Melanie D. Jensen; Erin M. O'Leary; Wesley D. Peck; Steven A. Smith; James A. Sorensen

2006-01-01T23:59:59.000Z

352

Pore-scale simulation of liquid CO2 displacement of water using a two-phase lattice Boltzmann model  

SciTech Connect (OSTI)

A lattice Boltzmann color-fluid model, which was recently proposed by Liu et al. [H. Liu, A.J. Valocchi, and Q. Kang. Three-dimensional lattice Boltzmann model for immiscible two-phase flow simulations. Phys. Rev. E, 85:046309, 2012.] based on a concept of continuum surface force, is improved to simulate immiscible two-phase flows in porous media. The new improvements allow the model to account for different kinematic viscosities of both fluids and to model fluid-solid interactions. The capability and accuracy of this model is first validated by two benchmark tests: a layered two-phase flow with a viscosity ratio, and a dynamic capillary intrusion. This model is then used to simulate liquid CO2 (LCO2) displacing water in a dual-permeability pore network. The extent and behavior of LCO2 preferential flow (i.e., fingering) is found to depend on the capillary number (Ca), and three different displacement patterns observed in previous micromodel experiments are reproduced. The predicted variation of LCO2 saturation with Ca, as well as variation of specific interfacial length with LCO2 saturation, are both in good agreement with the experimental observations. To understand the effect of heterogeneity on pore-scale displacement, we also simulate LCO2 displacing water in a randomly heterogeneous pore network, which has the same size and porosity as the dual-permeability pore network. In comparison to the dual-permeability case, the transition from capillary fingering to viscous fingering occurs at a higher Ca, and LCO2 saturation is higher at low Ca but lower at high Ca. In either pore network, the LCO2-water specific interfacial length is found to obey a power-law dependence on LCO2 saturation.

Liu, Haihu; Valocchi, Albert J.; Werth, Charles J.; Kang, Oinjun; Oostrom, Martinus

2014-11-01T23:59:59.000Z

353

A Model of Transient Thermal Transport Phenomena Applied to the Carbonation and Calcination of a Sorbent Particle for Calcium Oxide Looping CO2 Capture  

E-Print Network [OSTI]

looping is selected as the model cycle because of its suitability for solar-driven carbon dioxide captureA Model of Transient Thermal Transport Phenomena Applied to the Carbonation and Calcination of a Sorbent Particle for Calcium Oxide Looping CO2 Capture Lindsey Yue and Wojciech Lipi´nski, The Australian

354

A Multi-Pollutant Framework for Evaluating CO2 Control Options for Fossil Fuel Power Plants  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Multi-Pollutant Framework for Evaluating CO Multi-Pollutant Framework for Evaluating CO 2 Control Options for Fossil Fuel Power Plants Edward S. Rubin (rubin@cmu.edu; 412-268-5897) Anand B. Rao (abr@andrew.cmu.edu; 412-268-5605) Michael B. Berkenpas (mikeb@cmu.edu; 412-268-1088) Carnegie Mellon University EPP Department, Baker Hall 128A Pittsburgh, PA 15213 Abstract As part of DOE/NETL's Carbon Sequestration Program, we are developing an integrated, multi-pollutant modeling framework to evaluate the costs and performance of alternative carbon capture and sequestration technologies for fossil-fueled power plants. The model calculates emissions, costs, and efficiency on a systematic basis at the level of an individual plant or facility. Both new and existing facilities can be modeled, including coal-based or natural gas-based combustion or gasification systems using air or oxygen.

355

Evaluation of Cubic, SAFT, and PC-SAFT Equations of State for the Vapor–Liquid Equilibrium Modeling of CO2 Mixtures with Other Gases  

Science Journals Connector (OSTI)

Evaluation of Cubic, SAFT, and PC-SAFT Equations of State for the Vapor–Liquid Equilibrium Modeling of CO2 Mixtures with Other Gases ... In this work, we assess the capability of Redlich–Kwong (RK), Soave–Redlich–Kwong (SRK), Peng–Robinson (PR) cubic equations of state (EoS), as well as Statistical Associating Fluid Theory (SAFT) and Perturbed-Chain SAFT (PC-SAFT) in modeling vapor–liquid equilibria for binary mixtures of CO2 with CH4, N2, O2, SO2, Ar, and H2S, and for the ternary mixture CO2–N2–O2. ... PC-SAFT is, on average, more accurate than cubic EoS and SAFT when no binary interaction parameter is used. ...

Nikolaos I. Diamantonis; Georgios C. Boulougouris; Erum Mansoor; Dimitrios M. Tsangaris; Ioannis G. Economou

2013-02-07T23:59:59.000Z

356

Microsoft PowerPoint - Sequestration Briefing - October-07.ppt  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Carbon Sequestration R&D Overview Carbon Sequestration R&D Overview Office of Fossil Energy Carbon Sequestration Briefing October 2007 Sean Plasynski, PhD Sequestration Technology Manager Office of Fossil Energy R&D Focus is on Coal & Electricity Oil 43% Oil 43% Coal 36% Coal 36% Natural Gas 21% Electricity 39% Electricity 39% Other 30% Other 30% Transportation 32% Transportation 32% United States CO2 Emissions 36% Emissions From Coal 39% Emissions From Electricity Office of Fossil Energy R&D Focus is on CO 2 Methane 9% Nitrous Oxide 5% HFCs, PFCs, SF 6 2% CO 2 from Energy 81% Other CO 2 3% "EIA Emissions of Greenhouse Gases in the U.S.: 2000" United States Greenhouse Gas Emissions (Equivalent Global Warming Basis) Office of Fossil Energy Annual CO 2 Emissions Extremely Large 6,300,000,000 Carbon Dioxide (CO

357

CO2 Injection Begins in Illinois | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Begins in Illinois Begins in Illinois CO2 Injection Begins in Illinois November 17, 2011 - 12:00pm Addthis Washington, DC - The Midwest Geological Sequestration Consortium (MGSC), one of seven regional partnerships created by the U.S. Department of Energy (DOE) to advance carbon storage technologies nationwide, has begun injecting carbon dioxide (CO2) for their large-scale CO2 injection test in Decatur, Illinois. The test is part of the development phase of the Regional Carbon Sequestration Partnerships program, an Office of Fossil Energy initiative launched in 2003 to determine the best approaches for capturing and permanently storing gases that can contribute to global climate change. "Establishing long-term, environmentally safe and secure underground CO2 storage is a critical component in achieving successful commercial

358

CO2 Storage and Sink Enhancements: Developing Comparable Economics  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Storage and Sink Enhancements: Storage and Sink Enhancements: Developing Comparable Economics Richard G. Rhudy (rrhudy@epri.com; 650-855-2421) Electric Power Research Institute P.O. Box 10412 Palo Alto, CA 94303-0813 Bert R. Bock (brbock@tva.gov; 256-386-3095) David E. Nichols (denichols@tva.gov; 256-386-2489) Tennessee Valley Authority P.O. Box 1010 Muscle Shoals, AL 35662-1010 Abstract One of the major difficulties in evaluating CO 2 sequestration technologies and practices, both geologic storage of captured CO 2 and storage in biological sinks, is obtaining consistent, transparent, accurate, and comparable economics. This paper reports on a project that compares the economics of major technologies and practices under development for CO 2 sequestration, including captured CO 2 storage options, such as active oil reservoirs, depleted oil and gas

359

If Anthropogenic CO2 Emissions Cease, Will Atmospheric CO2 Concentration Continue to Increase?  

Science Journals Connector (OSTI)

If anthropogenic CO2 emissions were to suddenly cease, the evolution of the atmospheric CO2 concentration would depend on the magnitude and sign of natural carbon sources and sinks. Experiments using Earth system models indicate that the overall ...

Andrew H. MacDougall; Michael Eby; Andrew J. Weaver

2013-12-01T23:59:59.000Z

360

Air–steam gasification of biomass in fluidized bed with CO2 absorption: A kinetic model for performance prediction  

Science Journals Connector (OSTI)

Abstract Significance of decarbonized energy production in the context of a foreseeable hydrogen economy has called for the need of extensive research in biomass gasification-carbon dioxide capture technique. The feasibility of calcium oxide as a sorbent for CO2 in syngas is studied for air–steam fluidized bed (FB) gasification through a reaction kinetic modeling approach. Arrhenius rate equations are employed for primary and secondary pyrolysis, gasification and carbonation reactions. Devolatilization product yields are predicted using available correlations for FB gasification and cracking of tar is incorporated. Parametric performance analysis is carried out highlighting the significance of equivalence ratio (ER), gasification temperature, steam to biomass ratio (SBR) and sorbent to biomass ratio (SOBR). The effects of various gasifying media on H2 concentration and performance indicators such as heating value and efficiencies are analyzed. The simulation results are validated with the reported experimental results. The kinetic study reveals that air–steam gasification significantly reduces the unreacted steam but at a lower H2 concentration than steam gasification. A maximum of 53% hydrogen rich gas mixture is predicted at ER = 0.25, SBR = 1.5, SOBR = 2.7 and 1000 K. Against fossil fuel expended steam gasification, pure oxygen gasification is suggested by the study.

C.C. Sreejith; C. Muraleedharan; P. Arun

2015-01-01T23:59:59.000Z

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361

Discrete Fracture Network Models for Risk Assessment of Carbon Sequestration in Coal  

SciTech Connect (OSTI)

A software package called DFNModeler has been developed to assess the potential risks associated with carbon sequestration in coal. Natural fractures provide the principal conduits for fluid flow in coal-bearing strata, and these fractures present the most tangible risks for the leakage of injected carbon dioxide. The objectives of this study were to develop discrete fracture network (DFN) modeling tools for risk assessment and to use these tools to assess risks in the Black Warrior Basin of Alabama, where coal-bearing strata have high potential for carbon sequestration and enhanced coalbed methane recovery. DFNModeler provides a user-friendly interface for the construction, visualization, and analysis of DFN models. DFNModeler employs an OpenGL graphics engine that enables real-time manipulation of DFN models. Analytical capabilities in DFNModeler include display of structural and hydrologic parameters, compartmentalization analysis, and fluid pathways analysis. DFN models can be exported to third-party software packages for flow modeling. DFN models were constructed to simulate fracturing in coal-bearing strata of the upper Pottsville Formation in the Black Warrior Basin. Outcrops and wireline cores were used to characterize fracture systems, which include joint systems, cleat systems, and fault-related shear fractures. DFN models were constructed to simulate jointing, cleating, faulting, and hydraulic fracturing. Analysis of DFN models indicates that strata-bound jointing compartmentalizes the Pottsville hydrologic system and helps protect shallow aquifers from injection operations at reservoir depth. Analysis of fault zones, however, suggests that faulting can facilitate cross-formational flow. For this reason, faults should be avoided when siting injection wells. DFN-based flow models constructed in TOUGH2 indicate that fracture aperture and connectivity are critical variables affecting the leakage of injected CO{sub 2} from coal. Highly transmissive joints near an injection well have potential to divert a large percentage of an injected CO{sub 2} stream away from a target coal seam. However, the strata-bound nature of Pottsville fracture systems is a natural factor that mitigates the risk of long-range leakage and surface seepage. Flow models indicate that cross-formational flow in strata-bound joint networks is low and is dissipated by about an order of magnitude at each successive bedding contact. These models help confirm that strata-bound joint networks are self-compartmentalizing and that the thick successions of interbedded shale and sandstone separating the Pottsville coal zones are confining units that protect shallow aquifers from injection operations at reservoir depth. DFN models are powerful tools for the simulation and analysis of fracture networks and can play an important role in the assessment of risks associated with carbon sequestration and enhanced coalbed methane recovery. Importantly, the stochastic nature DFN models dictates that they cannot be used to precisely reproduce reservoir conditions in a specific field area. Rather, these models are most useful for simulating the fundamental geometric and statistical properties of fracture networks. Because the specifics of fracture architecture in a given area can be uncertain, multiple realizations of DFN models and DFN-based flow models can help define variability that may be encountered during field operations. Using this type of approach, modelers can inform the risk assessment process by characterizing the types and variability of fracture architecture that may exist in geologic carbon sinks containing natural fractures.

Jack Pashin; Guohai Jin; Chunmiao Zheng; Song Chen; Marcella McIntyre

2008-07-01T23:59:59.000Z

362

Biominetic Membrane for Co2 Capture from Flue Gas  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Biomimetic Membrane for CO Biomimetic Membrane for CO 2 Capture from Flue Gas Background Carbon Capture and Sequestration (CCS) is a three-step process including capture, pipeline transport, and geologic storage of which the capture of carbon dioxide (CO 2 ) is the most costly and technically challenging. Current available methods impose significant energy burdens that severely impact their overall effectiveness as a significant deployment option. Of the available capture technologies for post

363

BNL | CO2 Laser  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

CO2 Laser CO2 Laser The ATF is one of the only two facilities worldwide operating picosecond, terawatt-class CO2 lasers. Our laser system consists of a picoseconds pulse-injector based on fast optical switching from the output of a conventional CO2 laser oscillator, and a chain of high-pressure laser amplifiers. It starts with a wavelength converter wherein a near-IR picosecond solid-state laser with l»1 μm produces a mid-IR 10-μm pulse. This process employs two methods; semiconductor optical switching, and the Kerr effect. First, we combine the outputs from a multi-nanosecond CO2 laser oscillator with a picosecond Nd:YAG laser on a germanium Brewster-plate to produce an ~200 ps, 10μm pulse by semiconductor optical switching. Co-propagating this pulse with a Nd:YAG's 2nd harmonic in a

364

A Conceptual Model of H2O/CO2 Frost Sublimation and Condensation Caused Albedo Change in Crater Interiors, Martian Seasonal Polar Cap Regions H. Xie1  

E-Print Network [OSTI]

A Conceptual Model of H2O/CO2 Frost Sublimation and Condensation Caused Albedo Change in Crater.Xie@utsa.edu; 2 School of Chemistry, Physics and Earth Sciences, Flinders University, Australia; 3 Research Center are a major element of the current Mars' climate and circulation. Understanding the sublimation

Texas at San Antonio, University of

365

Integrated Gasification Combined Cycle Dynamic Model: H2S Absorption/Stripping, Water?Gas Shift Reactors, and CO2 Absorption/Stripping  

Science Journals Connector (OSTI)

Integrated Gasification Combined Cycle Dynamic Model: H2S Absorption/Stripping, Water?Gas Shift Reactors, and CO2 Absorption/Stripping ... Future chemical plants may be required to have much higher flexibility and agility than existing process facilities in order to be able to handle new hybrid combinations of power and chemical units. ...

Patrick J. Robinson; William L. Luyben

2010-04-26T23:59:59.000Z

366

Effect of CO2 sorption-induced anisotropic swelling on caprock sealing efficiency  

Science Journals Connector (OSTI)

Abstract Caprock sealing integrity is a key issue to CO2 sequestration in a saline aquifer over a long period. Caprock as a sealing layer is defined as water-saturated formation with a sufficient capillary entry pressure to prevent the upward migration of a buoyant fluid. Most caprocks are naturally anisotropic, hence the effect of CO2 sorption-induced anisotropic swelling may heavily impact their sealing efficiency. This paper proposes a numerical model based on a conceptual model for the investigation of the sealing efficiency of anisotropic caprocks, where caprock is a composite body of fracture network and shale matrix. Two-phase flow of brine water and CO2 is observed only in the fracture network but the CO2 in the fractures further diffuses into shale matrix through a much slower diffusion process and makes the shale matrix anisotropically swell or shrink, thus significantly altering the directional porosity and permeability of the fracture network. This numerical model is verified by a storage reservoir and applied to a caprock layer to explore the mechanism for self-enhancement or self-limiting in the CO2–brine mixing zone if anisotropic swelling is considered. These examples demonstrate that this model is able to numerically simulate the CO2 storage relevant geological systems within anisotropic shale. The sorption-induced anisotropic swelling of shale matrix has significant impacts on the caprock sealing efficiency. This work provides an alternative tool to enrich the numerical modeling for the assessment of CO2 caprock sealing efficiency in natural shale caprocks.

J.G. Wang; Yang Ju; Feng Gao; Yan Peng; Yanan Gao

2014-01-01T23:59:59.000Z

367

Gulf of Mexico Miocene CO2 Site Characterization Mega Transect  

SciTech Connect (OSTI)

This project characterized the Miocene-age sub-seafloor stratigraphy in the near-offshore portion of the Gulf of Mexico adjacent to the Texas coast. The large number of industrial sources of carbon dioxide (CO2) in coastal counties and the high density of onshore urbanization and environmentally sensitive areas make this offshore region extremely attractive for long-term storage of carbon dioxide emissions from industrial sources (CCS). The study leverages dense existing geologic data from decades of hydrocarbon exploration in and around the study area to characterize the regional geology for suitability and storage capacity. Primary products of the study include: regional static storage capacity estimates, sequestration “leads” and prospects with associated dynamic capacity estimates, experimental studies of CO2-brine-rock interaction, best practices for site characterization, a large-format ‘Atlas’ of sequestration for the study area, and characterization of potential fluid migration pathways for reducing storage risks utilizing novel high-resolution 3D (HR3D) seismic surveys. In addition, three subcontracted studies address source-to-sink matching optimization, offshore well bore management and environmental aspects. The various geologic data and interpretations are integrated and summarized in a series of cross-sections and maps, which represent a primary resource for any near-term commercial deployment of CCS in the area. The regional study characterized and mapped important geologic features (e.g., Clemente-Tomas fault zone, the regionally extensive Marginulina A and Amphistegina B confining systems, etc.) that provided an important context for regional static capacity estimates and specific sequestration prospects of the study. A static capacity estimate of the majority of the Study area (14,467 mi2) was estimated at 86 metric Gigatonnes. While local capacity estimates are likely to be lower due to reservoir-scale characteristics, the offshore Miocene interval is a storage resource of National interest for providing CO2 storage as an atmospheric emissions abatement strategy. The natural petroleum system was used as an analog to infer seal quality and predict possible migration pathways of fluids in an engineered system of anthropogenic CO2 injection and storage. The regional structural features (e.g., Clemente-Tomas fault zone) that exert primary control on the trapping and distribution of Miocene hydrocarbons are expected to perform similarly for CCS. Industrial?scale CCS will require storage capacity utilizing well?documented Miocene hydrocarbon (dominantly depleted gas) fields and their larger structural closures, as well as barren (unproductive, brine?filled) closures. No assessment was made of potential for CO2 utilization for enhanced oil and gas recovery. The use of 3D numerical fluid flow simulations have been used in the study to greatly assist in characterizing the potential storage capacity of a specific reservoir. Due to the complexity of geologic systems (stratigraphic heterogeneity) and inherent limitations on producing a 3D geologic model, these simulations are typically simplified scenarios that explore the influence of model property variability (sensitivity study). A specific site offshore San Luis Pass (southern Galveston Island) was undertaken successfully, indicating stacked storage potential. Downscaling regional capacity estimates to the local scale (and the inverse) has proven challenging, and remains an outstanding gap in capacity assessments. In order to characterize regional seal performance and identify potential brine and CO2 leakage pathways, results from three high-resolution 3D (HR3D) seismic datasets acquired by the study using novel HR3D (P-Cable) acquisition system showed steady and significant improvements in data quality because of improved acquisition and processing technique. Finely detailed faults and stratigraphy in the shallowest 1000 milliseconds (~800 m) of data allowed for the identification and mapping of unconformable surfaces including what is probably

Meckel, Timothy; Trevino, Ramon

2014-09-30T23:59:59.000Z

368

Dual-phase membrane for High temperature CO2 separation  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Jerry Y.S. Lin Jerry Y.S. Lin Chemical Engineering Arizona State University Tempe, AZ 85287 Jerry.lin@asu.edu Pre-Combustion Carbon Dioxide Capture by a New Dual-Phase Ceramic-Carbonate Membrane Reactor 2 Background 3 CO 2 Capture Methods and Efficiency Improvement Coal, Natural gas, Biomass CO 2 separation Power plant CO 2 compression, conditioning for sequestration Gasification Reforming Shift CO 2 Separation Power plant Power plant Air separation N 2 /O 2 CO 2 Post- combustion H 2 /CO H 2 /CO H 2 CO 2 H 2 O/N 2 /O 2 CO 2 H 2 Pre- combustion Air N 2 O 2 or O 2 /CO 2 CO 2 Oxyfuel Combustion Air separation Air Air separation Air Air separation Air Air Air Air Air separation Air Air separation Air N 2 Air separation Air O 2 or O 2 /CO 2 N 2 Air separation Air N 2 Air O 2 or O 2 /CO 2 N 2 Air Air separation N 2 Air 4 Water-Gas-Shift Reaction and Membrane Reactor Reforming

369

Strategy for prevention of sequestered CO2 seepage from CBM formations.  

E-Print Network [OSTI]

??This study introduces a new strategy for the prevention of post-sequestration carbon dioxide (CO2) seepage to the surface from CBM (coalbed methane) formations that is… (more)

Tovar Torrealba, Miguel Angel.

2006-01-01T23:59:59.000Z

370

meters in CO2 euthanasia chambers. All CO2 euthanasia chambers in both  

E-Print Network [OSTI]

meters in CO2 euthanasia chambers. All CO2 euthanasia chambers in both the facilities and laboratories will need flow meters. ULAR is currently in the process of identifying a cost-effective, accurate, and durable flow meter to install in all of the CO2 chambers in all of the vivaria. When a specific model

Bushman, Frederic

371

Optimal synthesis of a pressure swing adsorption process for CO2 capture  

SciTech Connect (OSTI)

The emission of carbon dioxide from cement industry and power plants that burn fossil fuels is the major cause for the accumulation of CO2 in the atmosphere, which causes long-range environmental problems. One option to mitigate the emission of CO2 is to capture it from the emission sources and store it to the ocean or depleted oil field or use it for enhanced oil recovery. CO2 recovery has been achieved by gas absorption employing solutions of carbonates and alkanolamines. However, this process is energy-intensive for the regeneration of solvent and also faces problems due to corrosion. Recently, the pressure swing adsorption (PSA) process has been considered as an alternative to the absorption process. PSA processes have been widely applied for the removal of CO2 from various feed mixtures, such as CO2 in the steam reformer off gas, landfill gas and natural gas. In all these commercial PSA cycles, the weakly adsorbed component in the mixture is the desired product and enriching the strongly adsorbed CO2 is not a concern. On the other hand, for the capture of CO2 for sequestration, it is necessary to concentrate the CO2 to a high purity to reduce the compression and transportation cost. Thus, it is necessary to develop a PSA cycle by which a high-purity product for the strongly adsorbed component with a high recovery is obtained. A multitude of PSA cycles and adsorbents have been developed for producing highly pure heavy component (CO2) from feedstock with low CO2 concentration. Kikkinides et al. suggested a 4-bed 4-step process with activated carbon as the sorbent and could recover 68% of CO2 at 99.997% purity. Chue et al. compared activated carbon and zeolite 13X on a 3-bed 7-step process and concluded that the latter is better than the former for CO2 recovery. However, the CO2 recovery was low in their process due to the lack of a countercurrent step in the chosen cycle. Choi et al. reported more than 70% CO2 recovery at more than 90% purity for a modified 3-bed 7-step cycle. However, they solved a very small two variable optimization problem, thus being a specialized case. Zhang et al. have given justifications for using a specific cyclic component step in the adsorption cycle in the context of CO2 capture by using a simplistic mathematical model for the PSA process. Reynolds et al. have suggested a variety of stripping PSA cycles for CO2 recovery at high temperature using a hydrotalcite-like adsorbent. In this study, a two-bed superstructure of the PSA process has been developed to optimally synthesize an appropriate cycle for CO2 capture. The superstructure considers all the possible operating steps in a PSA cycle with two beds. An optimal control problem with a PDE-based model for PSA system has been formulated in which different steps within a cycle are realized with the help of control variables changing with time. The optimization problem has been solved for three different cases of maximizing CO2 recovery (for a given purity), maximizing feed throughput and minimizing specific power (for a given level of CO2 purity and recovery). Current results indicate the superstructure-based approach as a promising technique for deriving optimal PSA cycles. Different cases with different number of control variables indicate convergence to a particular kind of PSA cycle with over 99% purity and recovery of CO2. The results obtained from optimization problem will also be compared with the optimal PSA cycle simulated more accurately in a dynamic simulation environment.

Agarwal, A.; Biegler, L.; Zitney, S.

2008-01-01T23:59:59.000Z

372

What Energy ModelersWhat Energy Modelers Need to Know AboutNeed to Know About  

E-Print Network [OSTI]

to storageAmine/CO2 Separation CO2 Compression CO2 Coal Air Steam Steam Turbine Generator Electricity Air ( NOx, PM, SO2) Distillation System PC Boiler CO2 to storageCO2 Compression CO2 Air (Electricity, Fuels, Chemicals, Hydrogen) CO2 CO2 Capture & Compress CO2 Transport CO2 Storage (Sequestration

373

Delayed carbon sequestration and rising carbon prices  

Science Journals Connector (OSTI)

We set out a dynamic model to investigate optimal time paths of emissions, carbon stocks and carbon sequestration by land conversion, allowing for non-instantaneous carbon sequestration. Previous research in a dy...

Alejandro Caparrós

2009-10-01T23:59:59.000Z

374

Decarbonization and Sequestration for Mitigating Global Warming  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

DECARBONIZATION AND SEQUESTRATION FOR DECARBONIZATION AND SEQUESTRATION FOR MITIGATING GLOBAL WARMING M. Steinberg (msteinbe@bnl.gov); 631-344-3036 Brookhaven National Laboratory 12 South Upton Street Upton, NY 11973-5000, USA ABSTRACT Mitigating the global warming greenhouse effect while maintaining a fossil fuel economy, requires improving efficiency of utilization of fossil fuels, use of high hydrogen content fossil fuels, decarbonization of fossil fuels, and sequestering of carbon and CO 2 applied to all the sectors of the economy, electric power generation, transportation, and industrial, and domestic power and heat generation. Decarbonization means removal of carbon as C or CO 2 either before or after fossil fuel combustion and sequestration means disposal of the recovered C or CO 2 including its utilization. Removal and recovery of CO

375

Hydro-mechanical modelling of geological CO2 storage and the study of possible caprock fracture mechanisms  

E-Print Network [OSTI]

to tensile stresses is treated. The stress intensity factor is used as the driving parameter describing mechanisms N. Guy,1-2 D.M. Seyedi,1 F. Hild2 BRGM, Natural Risks & CO2 Storage Safety Division, 3 av. Claude studies have shown that gas injection into deep permeable formations induce changes of the total

376

An activity model for phase equilibria in the1 H2O-CO2-NaCl system2  

E-Print Network [OSTI]

reproduces solubility experiments of halite20 up to 650°C and 10 kbar, and accounts for ion pairing.gca.2013.02.008 #12;teractions parameters between aqueous CO2 and the aqueous species created by25 halite

Paris-Sud XI, Université de

377

Workshop on Carbon Sequestration Science - Ocean Carbon Sequestration  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Ocean Carbon Ocean Carbon Sequestration Howard Herzog MIT Energy Laboratory May 24, 2001 Ocean Carbon Sequestration Options * The direct injection of a relatively pure CO 2 stream that has been generated, for example, at a power plant or from an industrial process * The enhancement of the net oceanic uptake from the atmosphere, for example, through iron fertilization The DOE Center for Research on Ocean Carbon Sequestration (DOCS) * Established July 1999 * Centered at LBNL and LLNL * Participants S Eric Adams MIT S Jim Barry MBARI S Jim Bishop DOCS Scientific Co-director LBNL S Ken Caldeira DOCS Scientific Co-director LLNL S Sallie Chisholm MIT S Kenneth Coale Moss Landing Marine Laboratory S Russ Davis Scripps Institution of Oceanography S Paul Falkowski Rutgers S Howard Herzog MIT S Gerard Nihous Pacific International Center for High Technology Research

378

Forecast of Advanced Technology for Coal Power Generation Towards the Year of 2050 in CO2 Reduction Model of Japan  

Science Journals Connector (OSTI)

Abstract In the fossil fuel, coal is enough to get easily because it has supply and price stability brought about its ubiquitously. Coal is used for power generation as the major fuel in the world. However it is true that control of global warming should be applied to coal power generations. Therefore, many people expect CO2 reduction by technical innovation such as efficiency improvement, Carbon dioxide Capture and Storage (CCS). In case of coal power plant are considered for improving efficiency. Some of them have already put into commercial operation but others are still under R&D stage. Especially, the technical development prospect of the power plant is very important for planning the energy strategy in the resource-importing country. Japan Coal Energy Center (JCOAL) constructed a program to forecast the share of advanced coal fired plants/natural gas power plants towards the year of 2050. Then, we simulated the future prediction about 2 cases (the Japanese scenario and the world scenario). The fuel price and the existence of CCS were considered in the forecast of the technical development of the thermal power generation. Especially in the Japanese scenario, we considered the CO2 reduction target which is 80% reduction in 1990. In the world scenario, coal price had almost no influence on the share of coal fired plant. However, when the gas price increased 1.5% or more, the share of coal fired plant increased. In that case, CO2 emissions increased because coal-fired plant increased. Compared with both cases, the amount of CO2 in 2050 without CCS case was 50% higher than that of with CCS case. In Japanese scenario, achievement of 80% CO2 reduction target is impossible without CCS. If CCS is introduced into all the new establishment coal fired plant, CO2 reduction target can be attained. In the Japanese scenario, the gas price more expensive than a coal price so that the amount of the coal fired plant does not decline. Since the reduction of the amount of CO2 will be needed in all over the world, introductory promotion and technical development of CCS are very important not only Japan but also all over the world.

Takashi Nakamura; Keiji Makino; Kunihiko Shibata; Michiaki Harada

2013-01-01T23:59:59.000Z

379

NETL: IEP – Oxy-Combustion CO2 Emissions Control - CANMET CO2  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

– Oxy-Combustion CO2 Emissions Control – Oxy-Combustion CO2 Emissions Control CANMET CO2 Consortium-O2/CO2 Recycle Combustion Project No.: IEA-CANMET-CO2 (International Agreement) Photograph of CANMET's Vertical Combustor Research Facility. Photograph of CANMET’s Vertical Combustor Research Facility. The CANMET carbon dioxide (CO2) consortium will conduct research to further the development of oxy-combustion for retrofit to coal-fired power plants. Research activities include: (1) modeling of an advanced, supercritical pressure oxy-coal plant, including an analysis of the impact of oxygen (O2) purity and O2 partial enrichment, overall process performance, and cost; (2) testing of pilot-scale CO2 capture and compression; (3) investigating CO2 phase change at liquid and supercritical states in gas mixtures

380

Predicting PVT data for CO2brine mixtures for black-oil simulation of CO2 geological storage  

E-Print Network [OSTI]

trapping mechanism. In the petroleum industry, compositional reservoir simu- lators use EOS thermodynamic Leonenko a a Department of Chemical and Petroleum Engineering, University of Calgary, Canada b Department of Petroleum Engineering, Kuwait University, Kuwait 1. Introduction The sequestration of anthropogenic CO2

Santos, Juan

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We encourage you to perform a real-time search of NLEBeta
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381

carbon sequestration via direct injection  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

SEQUESTRATION VIA DIRECT INJECTION SEQUESTRATION VIA DIRECT INJECTION Howard J. Herzog, Ken Caldeira, and Eric Adams INTRODUCTION The build-up of carbon dioxide (CO 2 ) and other greenhouse gases in the Earth's atmosphere has caused concern about possible global climate change. As a result, international negotiations have produced the Framework Convention on Climate Change (FCCC), completed during the 1992 Earth Summit in Rio de Janeiro. The treaty, which the United States has ratified, calls for the "stabilization of greenhouse gas concentrations in the atmosphere at a level that would prevent dangerous anthropogenic interference with the climate system." The primary greenhouse gas is CO 2 , which is estimated to contribute to over two-thirds of any climate change. The primary source of CO

382

Prediction and Experimental Verification of CO2 Adsorption on Ni/DOBDC Using a Genetic Algorithm–Back-Propagation Neural Network Model  

Science Journals Connector (OSTI)

This is not a failure of the theoretical models but a failure of their application because the correlations from the model cannot cover a wide range of parameters. ... CO2 (as the adsorbate gas) was fed to the sample cell to achieve the setting pressure. ... The 3 layer's feed forward neural network with back propagation algorithm in MATLAB environment was used for estn. of removal efficiencies of phenol and resorcinol in bi-solute water environment based on 29 sets of lab. ...

Zhi Guo Qu; Hui Wang; Wen Zhang; Liang Zhou; Ying Xin Chang

2014-07-10T23:59:59.000Z

383

Impacts of Geochemical Reactions on Geologic Carbon Sequestration  

Science Journals Connector (OSTI)

In the face of increasing energy demands, geologic CO2 sequestration (GCS) is a promising option to mitigate the adverse effects of climate change. To ensure the environmental sustainability of this option, we must understand the rates and mechanisms of ...

Young-Shin Jun; Daniel E. Giammar; Charles J. Werth

2012-11-06T23:59:59.000Z

384

Carbon Sequestration Kinetic and Storage Capacity of Ultramafic Mining Waste  

Science Journals Connector (OSTI)

Mineral carbonation of ultramafic rocks provides an environmentally safe and permanent solution for CO2 sequestration. In order to assess the carbonation potential of ultramafic waste material produced by industrial processing, we designed a laboratory-...

Julie Pronost; Georges Beaudoin; Joniel Tremblay; Faïçal Larachi; Josée Duchesne; Réjean Hébert; Marc Constantin

2011-09-15T23:59:59.000Z

385

CO2 Storage in Shallow Underground and Surface Coal Mines: Challenges and Opportunities  

Science Journals Connector (OSTI)

Brine saturated with C-type (alkaline) fly ash that reacts with flue gas can provide an additional mechanism of chemical trapping (5). ... In addition, we thank Robert Virta, Mineral Commodity Specialist with the U.S. Geological Survey, for providing a digital map of swelling clay in high-resolution raster format, Garrett Veloski, for vectorization of the raster data, and Robert Dilmore, for developing the GIS database for the clay-and-coal map, expert advice on verifying the mineral stabilization aspects, and editorial input. ... Ozdemir, E. Chemistry of the adsorption of carbon dioxide by Argonne premium coals and a model to simulate CO2 sequestration in coal seams. ...

Vyacheslav N. Romanov; Terry E. Ackman; Yee Soong; Robert L. Kleinman

2009-01-29T23:59:59.000Z

386

Comprehensive ecosystem model-experiment synthesis using multiple datasets at two temperate forest free-air CO2 enrichment experiments: model performance and compensating biases  

SciTech Connect (OSTI)

Free Air CO2 Enrichment (FACE) experiments provide a remarkable wealth of data to test the sensitivities of terrestrial ecosystem models (TEMs). In this study, a broad set of 11 TEMs were compared to 22 years of data from two contrasting FACE experiments in temperate forests of the south eastern US the evergreen Duke Forest and the deciduous Oak Ridge forest. We evaluated the models' ability to reproduce observed net primary productivity (NPP), transpiration and Leaf Area index (LAI) in ambient CO2 treatments. Encouragingly, many models simulated annual NPP and transpiration within observed uncertainty. Daily transpiration model errors were often related to errors in leaf area phenology and peak LAI. Our analysis demonstrates that the simulation of LAI often drives the simulation of transpiration and hence there is a need to adopt the most appropriate of hypothesis driven methods to simulate and predict LAI. Of the three competing hypotheses determining peak LAI (1) optimisation to maximise carbon export, (2) increasing SLA with canopy depth and (3) the pipe model the pipe model produced LAI closest to the observations. Modelled phenology was either prescribed or based on broader empirical calibrations to climate. In some cases, simulation accuracy was achieved through compensating biases in component variables. For example, NPP accuracy was sometimes achieved with counter-balancing biases in nitrogen use efficiency and nitrogen uptake. Combined analysis of parallel measurements aides the identification of offsetting biases; without which over-confidence in model abilities to predict ecosystem function may emerge, potentially leading to erroneous predictions of change under future climates.

Walker, Anthony P [ORNL] [ORNL; Hanson, Paul J [ORNL] [ORNL; DeKauwe, Martin G [Macquarie University] [Macquarie University; Medlyn, Belinda [Macquarie University] [Macquarie University; Zaehle, S [Max Planck Institute for Biogeochemistry] [Max Planck Institute for Biogeochemistry; Asao, Shinichi [Colorado State University, Fort Collins] [Colorado State University, Fort Collins; Dietze, Michael [University of Illinois, Urbana-Champaign] [University of Illinois, Urbana-Champaign; Hickler, Thomas [Goethe University, Frankfurt, Germany] [Goethe University, Frankfurt, Germany; Huntinford, Chris [Centre for Ecology and Hydrology, Wallingford, United Kingdom] [Centre for Ecology and Hydrology, Wallingford, United Kingdom; Iversen, Colleen M [ORNL] [ORNL; Jain, Atul [University of Illinois, Urbana-Champaign] [University of Illinois, Urbana-Champaign; Lomas, Mark [University of Sheffield] [University of Sheffield; Luo, Yiqi [University of Oklahoma] [University of Oklahoma; McCarthy, Heather R [Duke University] [Duke University; Parton, William [Colorado State University, Fort Collins] [Colorado State University, Fort Collins; Prentice, I. Collin [Macquarie University] [Macquarie University; Thornton, Peter E [ORNL] [ORNL; Wang, Shusen [Canada Centre for Remote Sensing (CCRS)] [Canada Centre for Remote Sensing (CCRS); Wang, Yingping [CSIRO Marine and Atmospheric Research] [CSIRO Marine and Atmospheric Research; Warlind, David [Lund University, Sweden] [Lund University, Sweden; Weng, Ensheng [University of Oklahoma, Norman] [University of Oklahoma, Norman; Warren, Jeffrey [ORNL] [ORNL; Woodward, F. Ian [University of Sheffield] [University of Sheffield; Oren, Ram [Duke University] [Duke University; Norby, Richard J [ORNL] [ORNL

2014-01-01T23:59:59.000Z

387

Electricity generation from coal with CO2 capture by means of a novel power cycle  

SciTech Connect (OSTI)

Climate modelers have estimated that anthropogenic emissions of CO2 must be reduced substantially from the present rate to stabilize atmospheric concentration. To achieve this, electricity generation from fossil fuels with CO2 capture and direct sequestration may play an important role. If so, it will be worthwhile to consider power cycles that are designed to minimize atmospheric CO2 emissions and deliver CO2 ready for pipeline transport in addition to providing other desirable attributes of environmental performance and efficiency. One such novel approach, named the Matiant cycle, employs self generated CO2 as the working fluid with both Bryton and Rankine cycle turbines. Process modeling studies are being conducted at the NETL to investigate the promise of this cycle. In the work to be reported, synthesis gas is provided to the Matiant cycle by oxygen-blown dry coal entrained gasification. Oxygen for both the gasifier and the Matiant cycle is provided by use of an Ion Transport Membrane (ITM). ITM is a revolutionary approach for producing high purity oxygen from a high temperature pressurized air stream. ASPEC Plus is used as the simulation tool to compute energy balances and system performance. Two flowsheets are analyzed, the difference being the treatment of the low oxygen content raffinate stream from the ITM. Computed thermal efficiencies of the ITM/Matiant cycle are comparable to those of conventional IGCC without carbon capture. Specific carbon emissions per net MWh are many times lower for the new cycle than for other approaches being developed for power generation with CO2 capture, however. As much as 99.5% of the carbon in synthesis gas fed to the Matiant cycle could be recovered and removed in a pipeline as a high pressure liquid. Such high capture efficiencies at large central generating stations could allow use of fossil fuels without capture at smaller installations or by mobile sources, yielding a modest overall rate of CO2 emissions.

Ruether, J.; Le, P.; White, C.

2000-07-01T23:59:59.000Z

388

co2-transport | netl.doe.gov  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Tools and Data Baseline Studies Quality Guidelines (QGESS) About Energy Analysis FENETL CO2 Transport Cost Model About the model: This model was developed to estimate the cost of...

389

Soil: Carbon Sequestration in Agricultural Systems  

Science Journals Connector (OSTI)

Abstract Soil carbon sequestration can contribute to greenhouse gas (GHG) mitigation by removing CO2 from the atmosphere and at the same time improving soil health and sustainability. This article outlines the basic principles and controlling mechanisms involved in soil carbon sequestration and reviews how improved agricultural practices impact soil carbon stocks, based on data from long-term field experiments and other sources. It concludes with a section outlining challenges and opportunities for implementation of GHG mitigation strategies involving soil carbon sequestration, summarizing key science and policy-related issues.

K. Paustian

2014-01-01T23:59:59.000Z

390

Long-run Implications of a Forest-based Carbon Sequestration Policy on the United States Economy: A Computable General Equilibrium (CGE) Modeling Approach  

E-Print Network [OSTI]

The economic impacts of a government-funded, forest-based sequestration program were analyzed under two different payment schemes. The impacts were obtained by developing a regional, static CGE model built to accommodate a modified IMPLAN SAM for a...

Monge, Juan

2012-10-19T23:59:59.000Z

391

Research project on CO2 geological storage and groundwaterresources: Large-scale hydrological evaluation and modeling of impact ongroundwater systems  

SciTech Connect (OSTI)

If carbon dioxide capture and storage (CCS) technologies areimplemented on a large scale, the amounts of CO2 injected and sequesteredunderground could be extremely large. The stored CO2 then replaces largevolumes of native brine, which can cause considerable pressureperturbation and brine migration in the deep saline formations. Ifhydraulically communicating, either directly via updipping formations orthrough interlayer pathways such as faults or imperfect seals, theseperturbations may impact shallow groundwater or even surface waterresources used for domestic or commercial water supply. Possibleenvironmental concerns include changes in pressure and water table,changes in discharge and recharge zones, as well as changes in waterquality. In compartmentalized formations, issues related to large-scalepressure buildup and brine displacement may also cause storage capacityproblems, because significant pressure buildup can be produced. Toaddress these issues, a three-year research project was initiated inOctober 2006, the first part of which is summarized in this annualreport.

Birkholzer, Jens; Zhou, Quanlin; Rutqvist, Jonny; Jordan,Preston; Zhang,K.; Tsang, Chin-Fu

2007-10-24T23:59:59.000Z

392

Modeling Energy Flow in an Integrated Pollutant Removal (IPR) System with CO2 Capture Integrated with Oxy-fuel Combustion  

Science Journals Connector (OSTI)

Oxy-coal combustion is one of the technical solutions for mitigating CO2 in thermal power plants. ... Currently, more than 85% of the energy that drives modern economies comes from fossil fuels, and this has stimulated research and development into more sustainable alternative energy sources. ... Other species, such as SO2, various nitrogen compounds, HCl, and Hg, are also present in quantities dependent upon the fossil fuel composition and the amount of air that leaks into the boiler. ...

Sivaram Harendra; Danylo Oryshcyhn; Stephen Gerdemann; Thomas Ochs; John Clark

2012-10-13T23:59:59.000Z

393

DOE Regional Partnership Successfully Demonstrates Terrestrial CO2 Storage  

Broader source: Energy.gov (indexed) [DOE]

Successfully Demonstrates Terrestrial CO2 Successfully Demonstrates Terrestrial CO2 Storage Practices in Great Plains Region of U.S. and Canada DOE Regional Partnership Successfully Demonstrates Terrestrial CO2 Storage Practices in Great Plains Region of U.S. and Canada August 19, 2010 - 1:00pm Addthis Washington, DC - A field test demonstrating the best approaches for terrestrial carbon dioxide (CO2) storage in the heartland of North America has been successfully completed by one of the U.S. Department of Energy's (DOE) seven Regional Carbon Sequestration Partnerships (RCSPs). The Plains CO2 Reduction (PCOR) Partnership , a collaboration of over 80 U.S. and Canadian stakeholders, conducted the field test at sites in the Prairie Pothole Region, extending from central Iowa into Northern Alberta,

394

CO2 maritime transportation  

Science Journals Connector (OSTI)

The objective of this study is to describe the complete transport chain of CO2 between capture and storage including a ship transport. This last one is composed by the following steps: Shore terminal including the liquefaction, temporary storage and CO2 loading. Ship with a capacity of 30,000 m3. On or off shore terminal including an unloading system, temporary storage and export towards the final storage. Between all the possible thermodynamic states, the liquid one is most relevant two options are compared in the study (?50 °C, 7 bar) and (?30 °C, 15 bar). The ship has an autonomy of 6 days, is able to cover 1000 km with a cargo of 2.5 Mt/year. Several scenarios are studied varying the geographical position of the CO2 source, the number of harbours and the way the CO2 is finally stored. Depending on the option, the transport cost varies from 24 to 32 €/tCO2. This study confirms the conclusion of a previous study supported by ADEME, the cost transport is not negligible regarding the capture one when ships are considered. Transport by ship becomes a more economical option compared with an off shore pipeline when the distance exceeds 350 km and with an onshore pipeline when it exceeds 1100 km.

Sandrine Decarre; Julien Berthiaud; Nicolas Butin; Jean-Louis Guillaume-Combecave

2010-01-01T23:59:59.000Z

395

Big Sky Carbon Sequestration Partnership--Validation Phase  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Big Sky Carbon Sequestration Big Sky Carbon Sequestration Partnership-Validation Phase Background The U.S. Department of Energy (DOE) has selected seven partnerships, through its Regional Carbon Sequestration Partnership (RCSP) initiative, to determine the best approaches for capturing and permanently storing carbon dioxide (CO 2 ), a greenhouse gas (GHG) which can contribute to global climate change. The RCSPs are made up of state and local agencies, coal companies, oil and gas companies, electric utilities,

396

West Coast Regional Carbon Sequestration Partnership--Validation Phase  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

West Coast Regional Carbon Sequestration West Coast Regional Carbon Sequestration Partnership-Validation Phase Background The U.S. Department of Energy (DOE) has selected seven partnerships, through its Regional Carbon Sequestration Partnership (RCSP) initiative, to determine the best approaches for capturing and permanently storing carbon dioxide (CO 2 ), a greenhouse gas (GHG) which can contribute to global climate change. The RCSPs are made up of state and local agencies, coal companies, oil and gas companies,

397

Carbon dioxide sequestration in concrete in different curing environments  

E-Print Network [OSTI]

Carbon dioxide sequestration in concrete in different curing environments Y.-m. Chun, T.R. Naik, USA ABSTRACT: This paper summarizes the results of an investigation on carbon dioxide (CO2) sequestration in concrete. Concrete mixtures were not air entrained. Concrete mixtures were made containing

Wisconsin-Milwaukee, University of

398

Model Components of the Certification Framework for Geologic Carbon Sequestration Risk Assessment  

E-Print Network [OSTI]

of that leakage event. Acceptable risks from CO 2 or brinewhether the leakage risk is acceptable. If the CLR is above

Oldenburg, Curtis M.

2009-01-01T23:59:59.000Z

399

A Novel Framework for Carbon Capture, Utilization, and Sequestration, CCUS  

Science Journals Connector (OSTI)

Abstract Recent global warming and climate change are often attributed to anthropogenic CO2 emissions from burning and consumption of fossil fuels. CO2 capture, utilization and sequestration (CCUS) is an enabling technology toward reducing such emissions from stationary sources. However, significant challenges remain to be addressed before CCUS can be deployed at the industrial scale. A major challenge is to reduce the overall cost of CCUS. To this end, we apply a multi-scale approach and provide a comprehensive framework to elucidate materials-centric, process-centric and network-centric understanding toward reducing the overall CCUS cost. At the materials level, a hierarchical in silico screening method is developed to select the candidate adsorbent materials and optimize process conditions in tandem for adsorption-based postcombustion CO2 capture. At the process level, detailed cost-based modeling and optimization of different capture processes are performed, which enable us to develop explicit expressions for the investment and operating costs of capture technologies, and to determine the most cost-effective materials and processes to be used for CO2 capture and compression when addressing diverse emission scenarios. At the network level, we design an optimal nationwide CCUS structure that uses the most appropriate source plants, capture technologies and materials, transportation network, and CO2 utilization and storage sites. We also discuss the factors that affect the CCUS network costs.

M.M. Faruque Hasan; Eric L. First; Fani Boukouvala; Christodoulos A. Floudas

2014-01-01T23:59:59.000Z

400

Nonlinear root-derived carbon sequestration across a gradient of nitrogen and phosphorous deposition  

E-Print Network [OSTI]

Nonlinear root-derived carbon sequestration across a gradient of nitrogen and phosphorous sequestration of plant-carbon (C) inputs to soil may mitigate rising atmo- spheric carbon dioxide (CO2) concentrations and related climate change but how this sequestration will respond to anthropogenic nitrogen (N

Fierer, Noah

Note: This page contains sample records for the topic "modeling co2 sequestration" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

CARBON SEQUESTRATION VIA DIRECT INJECTION Howard J. Herzog, Ken Caldeira, and Eric Adams  

E-Print Network [OSTI]

CARBON SEQUESTRATION VIA DIRECT INJECTION Howard J. Herzog, Ken Caldeira, and Eric Adams and sequestration. Carbon sequestration is often associated with the planting of trees. As they mature, the trees INTRODUCTION The build-up of carbon dioxide (CO2) and other greenhouse gases in the Earth's atmosphere has

402

1. BACKGROUND & OBJECTIVES For geological carbon sequestration, it is essential to  

E-Print Network [OSTI]

1. BACKGROUND & OBJECTIVES · For geological carbon sequestration, it is essential to understand Material Characterization for Intermediate-scale Testing to Develop Strategies for Geologic Sequestration to generate comprehensive data sets. Due to the nature of the CO2 geological sequestration where supercritical

403

Carbon Sequestration to Mitigate Climate Change Human activities, especially the burning of fossil fuels such as coal, oil, and gas, have caused a substantial increase  

E-Print Network [OSTI]

Carbon Sequestration to Mitigate Climate Change Human activities, especially the burning of fossil-caused CO2 emissions and to remove CO2 from the atmosphere. 2.0 What is carbon sequestration? The term "carbon sequestration" is used to describe both natural and deliberate CARBON,INGIGATONSPERYEAR 1.5 Fossil

404

Methanol Synthesis from CO2 Hydrogenation over a Pd4/In2O3 Model Catalyst: A Combined DFT and Kinetic Study  

SciTech Connect (OSTI)

Methanol synthesis from CO2 hydrogenation on Pd4/In2O3 has been investigated using density functional theory (DFT) and microkinetic modeling. In this study, three possible routes in the reaction network of CO2 + H2 ? CH3OH + H2O have been examined. Our DFT results show that the HCOO route competes with the RWGS route whereas a high activation barrier kinetically blocks the HCOOH route. DFT results also suggest that H2COO* + H* ? H2CO* +OH* and cis-COOH* + H* ?CO* + H2O* are the rate limiting steps in the HCOO route and the RWGS route, respectively. Microkinetic modeling results demonstrate that the HCOO route is the dominant reaction route for methanol synthesis from CO2 hydrogenation. We found that the activation of H adatom on the small Pd cluster and the presence of H2O on the In2O3 substrate play important roles in promoting the methanol synthesis. The hydroxyl adsorbed at the interface of Pd4/In2O3 induces the transformation of the supported Pd4 cluster from a butterfly structure into a tetrahedron structure. This important structure change not only indicates the dynamical nature of the supported nanoparticle catalyst structure during the reaction but also shifts the final hydrogenation step from H2COH to CH3O.

Ye, Jingyun; Liu, Changjun; Mei, Donghai; Ge, Qingfeng

2014-08-01T23:59:59.000Z

405

Simultaneous modeling of VLE, LLE and VLLE of CO2 and 1, 2, 3 and 4 alkanol containing mixtures using GC-PPC-SAFT EOS  

Science Journals Connector (OSTI)

Abstract A polar version of the group contribution PC-SAFT equation of state (GC-PPC-SAFT; Tamouza et al., 2004; NguyenHuynh et al., 2008) combined with a method for correlation/prediction of binary interaction parameters kij (NguyenHuynh et al., 2008) is here applied to model vapor–liquid, liquid–liquid and vapor–liquid–liquid phase equilibria of CO2 + alkanol mixtures simultaneously. A cross-association interaction between CO2 and alkanol had to be taken into account to model/predict the mixtures equilibria accurately. The cross-association parameters were evaluated using the so-called CR1 mixing rules supported by ab initio computations. Extensive prediction tests on CO2 + alkanol mixtures involving linear and branched alkanols are carried out. The results obtained showed that in most cases, the correlation and prediction calculations are qualitatively and quantitatively satisfactory: the overall deviations on liquid phase and vapor phase are respectively ?X = 3–4% and ?Y = 1–2%.

D. NguyenHuynh; J.-P. Passarello; J.-C. de Hemptinne; F. Volle; P. Tobaly

2014-01-01T23:59:59.000Z

406

DOE Partnership Completes Successful CO2 Injection Test in the Mount Simon  

Broader source: Energy.gov (indexed) [DOE]

Partnership Completes Successful CO2 Injection Test in the Partnership Completes Successful CO2 Injection Test in the Mount Simon Sandstone DOE Partnership Completes Successful CO2 Injection Test in the Mount Simon Sandstone October 21, 2009 - 1:00pm Addthis Washington, DC - The Midwest Regional Carbon Sequestration Partnership (MRCSP), one of seven partnerships in the U.S. Department of Energy's Regional Carbon Sequestration Partnerships program, has successfully injected 1,000 metric tons of carbon dioxide (CO2) into the Mount Simon Sandstone, a deep saline formation that is widespread across much of the Midwest. Preliminary results indicate that the formation has good CO2 storage potential and could possibly serve as a repository for CO2 emissions captured from stationary sources in the region. Carbon capture and storage

407

DOE Regional Partnership Initiates CO2 Injection in Lignite Coal Seam |  

Broader source: Energy.gov (indexed) [DOE]

Initiates CO2 Injection in Lignite Coal Initiates CO2 Injection in Lignite Coal Seam DOE Regional Partnership Initiates CO2 Injection in Lignite Coal Seam March 10, 2009 - 1:00pm Addthis Washington, DC -- A U.S. Department of Energy/National Energy Technology Laboratory (NETL) team of regional partners has begun injecting CO2 into a deep lignite coal seam in Burke County, North Dakota, to demonstrate the economic and environmental viability of geologic CO2 storage in the U.S. Great Plains region. Ultimately, geologic carbon sequestration is expected to play an important role in mitigating greenhouse gas emissions and combating climate change. The Lignite Field Validation Test is being conducted by the Plains CO2 Reduction (PCOR) Partnership, one of seven regional partnerships under DOE's Regional Carbon Sequestration Partnership Program. The seven

408

On modeling the potential impacts of CO2 sequestration on shallow groundwater: Transport of organics and co-injected H2S by supercritical CO2 to shallow aquifers  

E-Print Network [OSTI]

solvent, and its use to decontaminate soils impacted by hazardous organic compounds is regarded as a “green”

Zheng, L.

2014-01-01T23:59:59.000Z

409

Summary Report on CO2 Geologic Sequestration & Water Resources Workshop  

E-Print Network [OSTI]

fracturing (e.g. , in hydraulic fracturing, steam floods,gas storage and some hydraulic fracturing exempted U.S.

Varadharajan, C.

2013-01-01T23:59:59.000Z

410

A Strategy for Monitoring of Geologic Sequestration of CO2  

E-Print Network [OSTI]

such as EOR and enhanced coalbed methane recovery. Finally,disposal sites, and coalbed methane sites, as well as oil

Myer, Larry R.

2000-01-01T23:59:59.000Z

411

Microsoft Word - SECARB Phase III CO2 sequestration Final EA...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Greenhouse gases (GHG) are components of the atmosphere that contribute to the greenhouse effect and climate change. Some greenhouse gases occur naturally in the atmosphere,...

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