Sample records for areva eagle rock

  1. EIS-0471: Areva Eagle Rock Enrichment Facility in Bonneville...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    1: Areva Eagle Rock Enrichment Facility in Bonneville County, ID EIS-0471: Areva Eagle Rock Enrichment Facility in Bonneville County, ID May 20, 2011 EIS-0471: Final Environmental...

  2. EAGLE

    Energy Science and Technology Software Center (OSTI)

    003500WKSTN00 EAGLE: 'EAGLE'Is an' Algorithmic Graph Library for Exploration  https://github.com/ssrangan 

  3. Eagle Rock Geothermal Facility | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualPropertyd8c-a9ae-f8521cbb8489 No revision| Open Jump to:(RES-AEI) |Rock Geothermal Facility

  4. EIS-0471: Areva Eagle Rock Enrichment Facility in Bonneville County, ID |

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't Your Destiny:Revised FindingDepartmentDepartment of Energy Notice8:Department of Energy

  5. EIS-0471: Department of Energy Loan Guarantee to Support Proposed Eagle Rock Enrichment Facility in Bonneville County, Idaho

    Broader source: Energy.gov [DOE]

    This EIS evaluates the environmental impacts of construction, operation, and decommissioning of the proposed Eagle Rock Enrichment Facility (EREF), a gas centrifuge uranium enrichment facility to be located in a rural area in western Bonneville County, Idaho. (DOE adopted this EIS issued by NRC on 04/13/2007.)

  6. The Effect of Rock Properties on Hydraulic Fracture Conductivity in the Eagle Ford and Fayetteville Shales

    E-Print Network [OSTI]

    Jansen, Timothy A

    2014-09-05T23:59:59.000Z

    . Optimizing fracture designs to improve well performance requires knowledge of how fracture conductivity is affected by rock and proppant characteristics. This study investigates the relationship between rock characteristics and laboratory measurements...

  7. The geochemistry and petrogenesis of the Tertiary igneous rocks of the Eagle Mountains, Van Horn, Texas

    E-Print Network [OSTI]

    Nelson, Ronald Alan

    1972-01-01T23:59:59.000Z

    Alkaline Ign ~ ~ cons ~ ~ ~ Rocks 21 42 D I S CUSS I QN e ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ Petrogenesis 50 50 Source magma. Fractionation . ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ 50 52 Origin of West Texas Nagmas... of Permian and Cretaceous age. The only Permian rocks in the area are represented by the Hueco Limestone Formation. The Cretaceous System, however, is represented by the entire Comanche and Gulf Series (Fig. 2). The Hueco Formation is of marine origin...

  8. Sandia National Laboratories: Sandia-AREVA Commission Solar Thermal...

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

    & CapabilitiesCapabilitiesSandia-AREVA Commission Solar ThermalMolten Salt Energy-Storage Demonstration Sandia-AREVA Commission Solar ThermalMolten Salt...

  9. DOE's General Counsel Determines Sudan Act Does Not Bar Areva...

    Office of Environmental Management (EM)

    DOE's General Counsel Determines Sudan Act Does Not Bar Areva Enrichment Services LLC Loan Application DOE's General Counsel Determines Sudan Act Does Not Bar Areva Enrichment...

  10. Fracture Conductivity of the Eagle Ford Shale

    E-Print Network [OSTI]

    Guzek, James J

    2014-07-25T23:59:59.000Z

    , and rock geomechanical properties. Therefore, optimizing conductivity by tailoring a well’s fracturing treatment to local reservoir characteristics is important to the oil and gas industry for economic reasons. The roots of hydraulic fracturing can... of the formation. Sahoo et al. (2013) identified that mineralogy, hydrocarbon filled porosity, and total organic content are most prominent parameters that control Eagle Ford well productivity. Mineral composition determines several geomechanical properties...

  11. Review of AREVA's Facilities and Modeling Capabilities Dennis Gottuso

    E-Print Network [OSTI]

    Barthelat, Francois

    of Generation 3 reactors (such as ATMEA) and manufacturing of radiation detection equipment. AREVA supplies

  12. Rocks

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Scienceand Requirements RecentlyElectronicResources ResourcesRobust, High-ThroughputRocks Rocks

  13. WINDExchange Webinar: Wind Energy and Eagles: The Problem, the...

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

    WINDExchange Webinar: Wind Energy and Eagles: The Problem, the Permit, and the Path Forward WINDExchange Webinar: Wind Energy and Eagles: The Problem, the Permit, and the Path...

  14. Stratigraphy and Depositional Controls on Source Rock Formation within the Upper Cretaceous (Lower Cemomanian) Maness Shale, Central Texas 

    E-Print Network [OSTI]

    Hudson, Ann

    2014-11-26T23:59:59.000Z

    With the success of the prolific Eagle Ford Shale play in South Texas, there is increasing interest in the resource potential of its equivalent source rock on the northeast side of the San Marcos Arch. The “Eagle Ford Shale” northeast of the San...

  15. Secret Plans Tab by Eagles Of Death Metal, www.Ultimate-Guitar.Com SECRET PLANS -Eagles of Death Metal

    E-Print Network [OSTI]

    Reiners, Peter W.

    Secret Plans Tab by Eagles Of Death Metal, www.Ultimate-Guitar.Com ------------------------------------------------------------------------------- SECRET PLANS - Eagles of Death Metal It Secret Plans Midnight missions Wheels in motion Hoo Hoo Secret Plans Midnight mission With emotion Hou

  16. Eagle County- Eagle County Efficient Building Code (ECO-Green Build)

    Broader source: Energy.gov [DOE]

    In an effort to reduce county-wide energy consumption and improve the environment, Eagle County established their own efficient building code (ECO-Green Build) which applies to all new construction...

  17. Where Eagles FlyTM CHARLES COUNTY

    E-Print Network [OSTI]

    Maryland at College Park, University of

    with the development of new energetic systems, CECD's expansion calls for the creation of other areas of excellenceWhere Eagles FlyTM CHARLES COUNTY MARYLAND CENTER FOR ENERGETIC CONCEPTS DEVELOPMENT Dr. D. K Phone 301.405.5294 Fax 301.314.9477 dkanand@umd.edu Website: www.cecd.umd.edu ENERGETICS TECHNOLOGY

  18. Use of east Texas reservoirs by wintering bald eagles

    E-Print Network [OSTI]

    Russell, Sandra Joy

    1982-01-01T23:59:59.000Z

    roost in the United States; there are now 4 other roosting areas preserved along the Mississippi and Missouri rivers (Dunstan 1978). The Bear Valley National Wildlife Refuge in Oregon was established to protect the approximately 300 wintering bald...;. immature, 40%%u adult), b bald eagles begin arriving in east Texas in mid-November and are mostly gone by mid-14arch. Some eagles apparently wander between reservoirs and river systems throughout the winter. The eagles rely on self-caught live fish...

  19. Eagle County - Energy Smart Colorado Energy Efficiency Rebate...

    Open Energy Info (EERE)

    Eagle County - Energy Smart Colorado Energy Efficiency Rebate Program (Colorado) No revision has been approved for this page. It is currently under review by our subject matter...

  20. Eagle County- Energy Smart Colorado Energy Efficiency Rebate Program

    Broader source: Energy.gov [DOE]

    Residents of Roaring Fork Valley and Eagle, Gunnison, Lake, and Summit Counties are eligible for energy efficiency and renewable energy assistance, rebates, and financing through the Energy Smart...

  1. Lead in Species of Greatest Conservation Need: Free-flying Bald Eagles as Indicators

    E-Print Network [OSTI]

    Koford, Rolf R.

    Lead in Species of Greatest Conservation Need: Free-flying Bald Eagles as Indicators Principal Wildlife Grant Goals and Objectives: o Characterize lead levels in nesting and wintering Bald Eagles in Iowa State University o Compare lead exposure in free-flying eagles with eagles admitted

  2. IPM Eagle LLP | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual SiteofEvaluatingGroup | OpenHunan Runhua New Energy DevelopmentListIIFCIINTA JumpIPM Eagle LLP

  3. Eagle Energy LLC | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualPropertyd8c-a9ae-f8521cbb8489 No revision| Open Jump to:(RES-AEI) | OpenEUHYFISEXARCounty,Eagle

  4. Microsoft Word - 1DOE-ID-12-046 AREVA EC B3-6 B3-15.doc

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

    of Impact Radioactive Material Use - AREVA will supply the University of Florida with depleted uranium pellets. The University of Florida will press and sinter pellets out the...

  5. Use of east Texas reservoirs by wintering bald eagles 

    E-Print Network [OSTI]

    Russell, Sandra Joy

    1982-01-01T23:59:59.000Z

    ) also found wintering bald eagles relying primarily on black-tailed jackrabbits for food. These birds shared their t 1 11 d oott tth g 1d g1 Ihttit ~ht t t). Ed d successfully trapped several bald eagles and fitted them with radio transmitters... below Toledo Bend Reservoir until the nest trees were killed by inundation. The Texas Parks and Wildlife Depar t- ment conducts an aerial survey each winter to locate bald eagle nests and to verify the success rate of each active nest. In 1979...

  6. Production Forecast, Analysis and Simulation of Eagle Ford Shale Oil 

    E-Print Network [OSTI]

    Alotaibi, Basel Z S Z J

    2014-12-02T23:59:59.000Z

    fracturing to liberate the recoverable hydrocarbon reserves. Thousands of wells that have been drilled in the major oil shale formations: Bakken, Permian Basin and Eagle Ford, where oil production peaked in the first few weeks and then showed a sharp...

  7. Double Eagle II Airport (AEG) Pavement Condition and Analysis

    E-Print Network [OSTI]

    Cal, Mark P.

    Double Eagle II Airport (AEG) Pavement Condition and Analysis Submitted to: Jane M. Lucero, AICP ...................................................................................................................FWD Analysis 11 .......................................3. Predicted Pavement Conditions Assuming No Maintenance 11 .....................Table 4. Predicted Pavement Conditions (PCI) Assuming no Maintenance 12

  8. Study of Golden Eagles Migration in the Calgary Canada

    E-Print Network [OSTI]

    Liao, Tianqing

    2013-01-01T23:59:59.000Z

    Eagles Migration in the Calgary Canada A thesis submitted inMigration in the Calgary Canada by Tianqing Liao Master ofMountains of Calgary, Canada. The project began in March

  9. Production Forecast, Analysis and Simulation of Eagle Ford Shale Oil

    E-Print Network [OSTI]

    Alotaibi, Basel Z S Z J

    2014-12-02T23:59:59.000Z

    fracturing to liberate the recoverable hydrocarbon reserves. Thousands of wells that have been drilled in the major oil shale formations: Bakken, Permian Basin and Eagle Ford, where oil production peaked in the first few weeks and then showed a sharp...

  10. Assessment of Eagle Ford Shale Oil and Gas Resources

    E-Print Network [OSTI]

    Gong, Xinglai

    2013-07-30T23:59:59.000Z

    , and to assess Eagle Ford shale oil and gas reserves, contingent resources, and prospective resources. I first developed a Bayesian methodology to generate probabilistic decline curves using Markov Chain Monte Carlo (MCMC) that can quantify the reserves...

  11. Rock Art

    E-Print Network [OSTI]

    Huyge, Dirk

    2009-01-01T23:59:59.000Z

    The archaeology of early Egypt: Social transformations inAlexander 1938 Rock-drawings of southern Upper Egypt. Vol.1. London: The Egypt Exploration Society. 1939 Rock-drawings

  12. Georgia Southern University Office of Career Services Eagle Career Net/NACElink Privacy and Use of Data Policy

    E-Print Network [OSTI]

    Hutcheon, James M.

    Georgia Southern University Office of Career Services Eagle Career Net/NACElink Privacy and Use of Data Policy Georgia Southern University Office of Career Services Eagle Career Net/NACElink Privacy and the NACElink Network to provide student with Eagle Career Net. Eagle Career Net is our online system

  13. EA-1905: Double Eagle Water System, Carlsbad, New Mexico

    Broader source: Energy.gov [DOE]

    This EA, prepared by the U.S. Department of the Interior’s Bureau of Land Management Carlsbad Field Office and adopted by DOE, evaluates the expansion and upgrade of the City of Carlsbad’s Double Eagle Water System.

  14. Waste Estimates for a Future Recycling Plant in the US Based Upon AREVA Operating Experience - 13206

    SciTech Connect (OSTI)

    Foare, Genevieve; Meze, Florian [AREVA E and P, SGN - 1, rue des Herons, 78182 Montigny-le-Bretonneux (France)] [AREVA E and P, SGN - 1, rue des Herons, 78182 Montigny-le-Bretonneux (France); Bader, Sven; McGee, Don; Murray, Paul [AREVA Federal Services LLC, 7207 IBM Drive, Mail Code CLT- 1D, Charlotte NC 28262 (United States)] [AREVA Federal Services LLC, 7207 IBM Drive, Mail Code CLT- 1D, Charlotte NC 28262 (United States); Prud'homme, Pascal [AREVA NC SA - 1, place Jean Millier, 92084 Paris La Defense CEDEX (France)] [AREVA NC SA - 1, place Jean Millier, 92084 Paris La Defense CEDEX (France)

    2013-07-01T23:59:59.000Z

    Estimates of process and secondary wastes produced by a recycling plant built in the U.S., which is composed of a used nuclear fuel (UNF) reprocessing facility and a mixed oxide (MOX) fuel fabrication facility, are performed as part of a U.S. Department of Energy (DOE) sponsored study [1]. In this study, a set of common inputs, assumptions, and constraints were identified to allow for comparison of these wastes between different industrial teams. AREVA produced a model of a reprocessing facility, an associated fuel fabrication facility, and waste treatment facilities to develop the results for this study. These facilities were divided into a number of discrete functional areas for which inlet and outlet flow streams were clearly identified to allow for an accurate determination of the radionuclide balance throughout the facility and the waste streams. AREVA relied primarily on its decades of experience and feedback from its La Hague (reprocessing) and MELOX (MOX fuel fabrication) commercial operating facilities in France to support this assessment. However, to perform these estimates for a U.S. facility with different regulatory requirements and to take advantage of some technological advancements, such as in the potential treatment of off-gases, some deviations from this experience were necessary. A summary of AREVA's approach and results for the recycling of 800 metric tonnes of initial heavy metal (MTIHM) of LWR UNF per year into MOX fuel under the assumptions and constraints identified for this DOE study are presented. (authors)

  15. Science Requirements for EAGLE for the E-ELT

    E-Print Network [OSTI]

    C. J. Evans; M. D. Lehnert; J. -G. Cuby; S. L. Morris; A. M. Swinbank; W. D. Taylor; D. M. Alexander; N. P. F. Lorente; Y. Clenet; T. Paumard

    2008-07-18T23:59:59.000Z

    We present an overview of the EAGLE science case, which spans spatially-resolved spectroscopy of targets from five key science areas - ranging from studies of heavily-obscured Galactic star clusters, right out to the first galaxies at the highest redshifts. Here we summarise the requirements adopted for study and also evaluate the availability of natural guide stars in example fields, which will impact on the adaptive optics performance and architecture.

  16. Water Use in the Eagle Ford Shale: An Economic and Policy Analysis of Water Supply and Demand

    E-Print Network [OSTI]

    Arnett, Benton; Healy, Kevin; Jiang, Zhongnan; LeClere, David; McLaughlin, Leslie; Roberts, Joey; Steadman, Maxwell

    2014-01-01T23:59:59.000Z

    inaccessible shale reserves to produce abundant amounts of oil and gas. The oil and gas proliferation in the Eagle Ford has seen exponential growth, and production is not anticipated to decline until 2025. In addition, a typical HF well in the Eagle Ford... Figures Figure 1: Map of the Eagle Ford Shale Oil, Gas and Condensate Play .......................................................... 4 Figure 2: Production Growth within the Eagle Ford Shale...

  17. Production patterns in Eagle Ford Shale (Decline Curve Analysis) Muoz Torres, J.1

    E-Print Network [OSTI]

    Texas at Austin, University of

    , the Eagle Ford Shale (EFS) play has had a remarkable development in natural gas and oil production. EFSEG39 Production patterns in Eagle Ford Shale (Decline Curve Analysis) Muñoz Torres, J.1 javier (bcf) of natural gas and 8,049 thousand barrels of oil. Up to 2020, it is expected that natural gas

  18. R and D Programs and Policy within the CEA-AREVA Joint Vitrification Lab (LCV) - 13592

    SciTech Connect (OSTI)

    Piroux, Jean Christophe [AREVA NC Marcoule LCV (France)] [AREVA NC Marcoule LCV (France); Paradis, Luc; Ladirat, Christian [CEA Marcoule LCV (France)] [CEA Marcoule LCV (France); Brueziere, Jerome; Chauvin, Eric [AREVA NC Paris La Defense (France)] [AREVA NC Paris La Defense (France)

    2013-07-01T23:59:59.000Z

    Waste management is a key issue for the reprocessing industry; furthermore, vitrification is considered as the reference for nuclear waste management. In order to further improve and strengthen their historical cooperation in high temperature waste management, the CEA, R and D organization, and AREVA, Industrial Operator, decided, in September 2010, to create a Joint Vitrification Laboratory within the framework of a strategic partnership. The main objectives of the CEA-AREVA Joint Vitrification Laboratory (LCV) are (i) support AREVA's activities, notably in its La Hague plants and for new projects, (ii) strengthen the CEA's lead as a reference laboratory in the field of waste conditioning. The LCV is mandated to provide strong, innovative solutions through the performance of R and D on processes and materials for vitrification, fusion and incineration, for high, intermediate and low level waste. The activities carried out in the LCV include academic research on containment matrices (formulation, long-term behaviour), and the improvement of current technologies/development of new ones in lab-scale to full-scale pilot facilities, in non-radioactive and radioactive conditions, including modelling and experimental tools. This paper focuses on the programs and policy managed within the LCV, as well as the means employed by the CEA and AREVA to meet common short-,mid- and long-term challenges, from a scientific and industrial point of view. Among other things, we discuss the technical support provided for the La Hague vitrification facilities on hot melter and CCIM technologies, the start-up of new processes (decommissioning effluents, UMo FP) with CCIM, the preparation of future processes by means of an assessment of new technologies and containment matrices (improved glasses, ceramics, etc.), as well as incineration/vitrification for organic and metallic mixed waste or metallic fusion. The close relationship between the R and D teams and industrial operators enables the LCV to propose attractive waste management solutions, with appropriate schedules and optimized development costs, making allowance for R and D constraints, engineering requirements and the industrial environment. (authors)

  19. Siemens Nuclear Power GmbH AREVA Nuclear Power | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere IRaghuraji Agro Industries Pvt LtdShawangunk, New York:SiG Solar GmbH Jump to: navigation,GmbH AREVA Nuclear

  20. Sandia Energy - Areva Solar and Sandia Labs Join Forces for CLFR

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Scienceand Requirements RecentlyElectronicResourcesjobsJulyCatalystsMolten-Salt Storage Areva

  1. Eagle County, Colorado Data Dashboard | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onYouTube YouTube Note: Since the YouTube|6721 Federal Register / Vol.6: RecordJune- BatteryVehicles |Data Dashboard Eagle

  2. Eagle-Vail, Colorado: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand JumpConceptual Model,DOE FacilityDimondale,South, NewDyerTier2Latvia)Colorado: EnergyEagle-Vail,

  3. Alternative Fuels Data Center: Golden Eagle Distributors Inc. to Convert

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office511041cloth DocumentationProductsAlternative Fuels Clean CitiesStationTrucks Golden Eagle

  4. The Effect of Rock Properties on Hydraulic Fracture Conductivity in the Eagle Ford and Fayetteville Shales

    E-Print Network [OSTI]

    Jansen, Timothy A

    2014-09-05T23:59:59.000Z

    ’s Ratio of the outcrop samples. A combination of X-ray diffraction and Fourier transform infrared spectroscopy was used to determine the mineralogy. Profilometer surface scans were also performed to characterize the fracture topography. The results from...

  5. Q00906010024 rock check dam

    E-Print Network [OSTI]

    00906010024 rock check dam Q00906010025 rock check dam Q00906010021 rock check dam Q00906010022 rock check dam Q00906010027 rock check dam Q00906010026 rock check dam Q00906010018 rock check dam Q00906010023 rock check dam Q00906010011 rock check dam Q00906010008 rock check dam Q00906010007 rock check dam Q

  6. Assessment of the Mexican Eagle Ford Shale Oil and Gas Resources 

    E-Print Network [OSTI]

    Morales Velasco, Carlos Armando

    2013-08-02T23:59:59.000Z

    was not quantified. In November 2011, Petr?leos Mexicanos (PEMEX) estimated prospective gas resources in the different plays. For the Upper Cretaceous (which includes the Eagle Ford shale) the estimates were 54-106-171 TCF (P90-P50-P10). For the Eagle Ford... and Agua Nueva shales combined resources were estimated to be 27-87 TCF (P90-P10) (PEMEX 2011). An assessment of the Eagle Ford shale oil and gas resources in the US is being done by the Crisman Institute for Petroleum Research at Texas A&M University...

  7. Areva Alternate

    Broader source: Energy.gov [DOE]

    In February 2014, the Department of Energy issued $6.5 billion in loan guarantees to GPC and OPC to support the construction of the nation’s next generation of advanced nuclear reactors.

  8. Applying Decline Curve Analysis in the Liquid-rich Shales: Eagle Ford Shale Study 

    E-Print Network [OSTI]

    Indras, Purvi

    2014-01-09T23:59:59.000Z

    With the emergence of liquid rich shale (LRS) plays like Eagle Ford and Northern Barnett, the petroleum industry needs a simple, easily applied technique that provides reliable estimates of future production rates in this kind of reservoir...

  9. WINDExchange Webinar: Wind Energy and Eagles: The Problem, the Permit, and the Path Forward

    Broader source: Energy.gov [DOE]

    Save the date for this free webinar. Wally Erickson of WEST, Inc. will present on the conservation and permitting challenges associated with wind and eagles; Annie Mudge of Cox, Castle &...

  10. R E P O R T Soils of Eagle Crater and Meridiani Planum at the

    E-Print Network [OSTI]

    Glotch, Timothy D.

    Planum, and finally came to rest inside 20-m- diameter Eagle crater. The airbags remained clean (Plate 1 by annual global storms. Airbag bounce marks on the crater floor indicate that de- flation leaves a thin

  11. Water Value and Environmental Implications of Hydraulic Fracturing: Eagle-Ford Shale

    E-Print Network [OSTI]

    Allen, W.; Lacewell, R.; Zinn, M.

    2014-01-01T23:59:59.000Z

    to develop implications based on industry, government and institutional data, and draw conclusions relative to impacts on the environment, realized amount of water, and value of water used for a typical well in the Eagle-Ford development, a water...

  12. Water Value and Environmental Implications of Hydraulic Fracturing: Eagle-Ford Shale 

    E-Print Network [OSTI]

    Allen, W.; Lacewell, R.; Zinn, M.

    2014-01-01T23:59:59.000Z

    to develop implications based on industry, government and institutional data, and draw conclusions relative to impacts on the environment, realized amount of water, and value of water used for a typical well in the Eagle-Ford development, a water...

  13. V00306010057 rock check dam

    E-Print Network [OSTI]

    ¬« ¬« ¬« ¬« ¬« XY! 16-020 16-030(c) 16-026(l) 16-028(c) 16-026(l) V00306010057 rock check dam V00306010012 rock check dam V00306010040 rock check dam V00306010039 rock check dam V00306010058 rock check dam V00306010064 rock check dam V00306010061 rock check dam V00306010062 rock check dam V00306010063

  14. Status of verification and validation of AREVA's ARCADIA{sup R} code system for PWR applications

    SciTech Connect (OSTI)

    Porsch, D. [AREVA, AREVA NP GmbH (Germany); P.O.Box 1109, 91001 Erlangen (Germany); Leberig, M.; Kuch, S. [AREVA, AREVA NP GmbH (Germany); Magat, P. [AREVA, AREVA NP SAS, Paris (France); Segard, K. [AREVA, AREVA NP Inc., Lynchburg (United States)

    2012-07-01T23:59:59.000Z

    In March 2010 the submittal of Topical Reports for ARCADIA{sup R} and COBRA-FLX, the thermal-hydraulic module of ARCADIA{sup R}, to the U.S. Nuclear Regulatory Commission (NRC) concluded a major step in the development of AREVA's new code system for core design and safety analyses. This submittal was dedicated to the application of the code system to uranium fuel in pressurized water reactors. The submitted information comprised results for plants operated in the US (France)) and Germany and provided uncertainties for in-core measuring systems with traveling in-core detectors and for the aero-ball system of the EPR. A reduction of the uncertainties in the prediction of F{sub AH} and F{sub Q} of > 1 % (absolute) was derived compared to the current code systems. This paper extents the verification and validation base for uranium based fuel and demonstrates the basic capabilities of ARCADIA{sup R} of describing MOX. The achieved status of verification and validation is described in detail. All applications followed the same standard without any specific calibration. The paper gives also insight in the new capability of 3D full core steady-state and transient pin-by-pin/sub-channel-by-sub-channel calculations and the opportunities offered by this feature. The gain of margins with increasing detail of the representation is outlined. Currently, the strategies for worldwide implementation of ARCADIA{sup R} are developed. (authors)

  15. Star Formation in the Eagle Nebula and NGC 6611

    E-Print Network [OSTI]

    B. G. Elmegreen; J. Palous; J. M. Oliveira; R. D. Jeffries; J. Th Van Loon

    Abstract. We present IZJHKL ? photometry of the core of the cluster NGC6611 in the Eagle Nebula. This photometry is used to constrain the Initial Mass Function (IMF) and the circumstellar disk frequency of the young stellar objects. Optical spectroscopy of 258 objects is used to confirm membership and constrain contamination as well as individual reddening estimates. Our overall aim is to assess the influence of the ionizing radiation from the massive stars on the formation and evolution of young low-mass stars and their disks. The disk frequency determined from the JHKL ? colour-colour diagram suggests that the ionizing radiation from the massive stars has little effect on disk evolution (Oliveira et al. 2005). The cluster IMF seems indistinguishable from those of quieter environments; however towards lower masses the tell-tale signs of an environmental influence are expected to become more noticeable, a question we are currently addressing with our recently acquired ultra-deep (ACS and NICMOS) HST images.

  16. Molecular hydrogen abundances of galaxies in the EAGLE simulations

    E-Print Network [OSTI]

    Lagos, Claudia del P; Schaye, Joop; Furlong, Michelle; Frenk, Carlos S; Bower, Richard G; Schaller, Matthieu; Theuns, Tom; Trayford, James W; Bahe, Yannick M; Vecchia, Claudio Dalla

    2015-01-01T23:59:59.000Z

    We investigate the abundance of galactic molecular hydrogen (H$_2$) in the "Evolution and Assembly of GaLaxies and their Environments" (EAGLE) cosmological hydrodynamic simulations. We assign H$_2$ masses to gas particles in the simulations in post-processing using two different prescriptions that depend on the local dust-to-gas ratio and the interstellar radiation field. Both result in H$_2$ galaxy mass functions that agree well with observations in the local and high-redshift Universe. The simulations reproduce the observed scaling relations between the mass of H$_2$ and the stellar mass, star formation rate and stellar surface density. Towards high edshifts, galaxies in the simulations display larger H$_2$ mass fractions, and correspondingly lower H$_2$ depletion timescales, also in good agreement with observations. The comoving mass density of H$_2$ in units of the critical density, $\\Omega_{\\rm H_2}$, peaks at $z\\approx 1.2-1.5$, later than the predicted peak of the cosmic star formation rate activity, a...

  17. Rock magnetism of remagnetized carbonate rocks: another look

    E-Print Network [OSTI]

    Jackson, M.; Swanson-Hysell, N. L

    2012-01-01T23:59:59.000Z

    and significance of magnetism in sedimentary rocks. Journal1997. Rock Magnetism. ¨ zdemir, O Dunlop, D. J. & Oon July 30, 2013 ROCK MAGNETISM: REMAGNETIZED CARBONATES

  18. Assessment of the Mexican Eagle Ford Shale Oil and Gas Resources

    E-Print Network [OSTI]

    Morales Velasco, Carlos Armando

    2013-08-02T23:59:59.000Z

    and for their commitment to our education. I would also like to thank Dr. Yuefeng Sun for being part of my committee and Dr. Juan Carlos Laya for serving as a substitute in my thesis defense. My special thanks to Petr?leos Mexicanos for providing me information... was not quantified. In November 2011, Petr?leos Mexicanos (PEMEX) estimated prospective gas resources in the different plays. For the Upper Cretaceous (which includes the Eagle Ford shale) the estimates were 54-106-171 TCF (P90-P50-P10). For the Eagle Ford...

  19. V01406010015 rock check dam

    E-Print Network [OSTI]

    XY! ¬« ¬« V01406010015 rock check dam V01406010014 rock check dam V01406010013 rock check dam 1501403010012 earthen berm V01403010008 earthen berm V01406010003 rock check dam V01406010004 rock check dam V01406010010 rock check dam V01406010011 rock check dam 15-0651 15-0307 15-0588 15-0532 15-0575 stormdrain 7160

  20. Decontamination of Nuclear Liquid Wastes Status of CEA and AREVA R and D: Application to Fukushima Waste Waters - 12312

    SciTech Connect (OSTI)

    Fournel, B.; Barre, Y.; Lepeytre, C.; Peycelon, H. [CEA Marcoule, DTCD, BP17171, 30207 Bagnols sur Ceze (France); Grandjean, A. [Institut de Chimie Separative de Marcoule, UMR5257 CEA-CNRS-UM2-ENSCM, BP17171, 30207 Bagnols sur Ceze (France); Prevost, T.; Valery, J.F. [AREVA NC, Paris La Defense (France); Shilova, E.; Viel, P. [CEA Saclay, DSM/IRAMIS/SPCSI, 91191 Gif sur Yvette (France)

    2012-07-01T23:59:59.000Z

    Liquid wastes decontamination processes are mainly based on two techniques: Bulk processes and the so called Cartridges processes. The first technique has been developed for the French nuclear fuel reprocessing industry since the 60's in Marcoule and La Hague. It is a proven and mature technology which has been successfully and quickly implemented by AREVA at Fukushima site for the processing of contaminated waters. The second technique, involving cartridges processes, offers new opportunities for the use of innovative adsorbents. The AREVA process developed for Fukushima and some results obtained on site will be presented as well as laboratory scale results obtained in CEA laboratories. Examples of new adsorbents development for liquid wastes decontamination are also given. A chemical process unit based on co-precipitation technique has been successfully and quickly implemented by AREVA at Fukushima site for the processing of contaminated waters. The asset of this technique is its ability to process large volumes in a continuous mode. Several chemical products can be used to address specific radioelements such as: Cs, Sr, Ru. Its drawback is the production of sludge (about 1% in volume of initial liquid volume). CEA developed strategies to model the co-precipitation phenomena in order to firstly minimize the quantity of added chemical reactants and secondly, minimize the size of co-precipitation units. We are on the way to design compact units that could be mobilized very quickly and efficiently in case of an accidental situation. Addressing the problem of sludge conditioning, cementation appears to be a very attractive solution. Fukushima accident has focused attention on optimizations that should be taken into account in future studies: - To better take account for non-typical aqueous matrixes like seawater; - To enlarge the spectrum of radioelements that can be efficiently processed and especially short lives radioelements that are usually less present in standard effluents resulting from nuclear activities; - To develop reversible solid adsorbents for cartridge-type applications in order to minimize wastes. (authors)

  1. Key Economic Drivers Impacting Eagle Ford Development from Resource to Reserves 

    E-Print Network [OSTI]

    Del Busto Pinzon, Andres Mauricio

    2013-11-25T23:59:59.000Z

    The Eagle Ford shale of South Texas has become one of the most active and most important shale plays in the U.S. This success has been possible because of the unique geology and richness of the play, allowing significant production of natural gas...

  2. The Dalles Lock and Dam welcomes raptor (and human) visitors during Eagle Watch 2013

    E-Print Network [OSTI]

    US Army Corps of Engineers

    The Dalles Lock and Dam welcomes raptor (and human) visitors during Eagle Watch 2013 By Amber Tilton, The Dalles Lock and Dam park ranger Nestled between Oregon and Washington is the Columbia River District operates three dams on the Columbia River where visitors and employees alike often spot America

  3. The Future of BPM: Flying with the Eagles or Scratching with the Chickens?

    E-Print Network [OSTI]

    Pfeifer, Holger

    The Future of BPM: Flying with the Eagles or Scratching with the Chickens? Peter Dadam Institute-oriented architectures, business process management (BPM) systems, and BPM in general receive a lot of attention to be performed manually today. In fact, BPM has a great potential. However, to realize this potential in practice

  4. T00406010008 rock check dam

    E-Print Network [OSTI]

    XY! ¬« T00406010008 rock check dam T00406010009 rock check dam T00406010010 rock check dam T00406010011 rock check dam T-SMA-2.85 0.344 Acres 35-014(g) 35-016(n) T00406010005 rock check dam T00406010006 rock check dam T00403090004 curb T00402040007 established vegetation, green hatch area 7200 7200 7180

  5. Lateral Continuity of the Eagle Ford Group Strata in Lozier Canyon and Antonio Creek, Terrell County, Texas

    E-Print Network [OSTI]

    Gardner, Rand D

    2013-09-24T23:59:59.000Z

    simplistic assumptions about relevant horizontal reservoir heterogeneities can lead to sub-optimal or uneconomical exploitation. High-resolution correlation of individual beds in the Eagle Ford Group over several miles in Lozier Canyon and Antonio Creek...

  6. Occurrence of Multiple Fluid Phases Across a Basin, in the Same Shale Gas Formation – Eagle Ford Shale Example

    E-Print Network [OSTI]

    Tian, Yao

    2014-04-29T23:59:59.000Z

    production data. Well deliverability was modeled to optimize oil production rate by designing appropriate operational parameters. From NW to SE, Eagle Ford fluids evolve from oil, to gas condensate and, finally, to dry gas, reflecting greater depth...

  7. Occurrence of Multiple Fluid Phases Across a Basin, in the Same Shale Gas Formation – Eagle Ford Shale Example 

    E-Print Network [OSTI]

    Tian, Yao

    2014-04-29T23:59:59.000Z

    Shale gas and oil are playing a significant role in US energy independence by reversing declining production trends. Successful exploration and development of the Eagle Ford Shale Play requires reservoir characterization, recognition of fluid...

  8. J00206010020 rock check dam

    E-Print Network [OSTI]

    XY! J00206010020 rock check dam J00206010023 rock check dam 09-009 09-009 09-009 PJ-SMA-2 0.901 Acres J00206010021 rock check dam J00206010019 rock check dam J00206010014 rock check dam J00203010007 Smith DATE: 14-November-2014 REVISION NUMBER: 8 XY! IP sampler location Berm Channel/swale Check dam

  9. W02106010008 rock check dam

    E-Print Network [OSTI]

    W-SMA-14.1 5.169 Acres W02106010008 rock check dam W02106010009 rock check dam W02106010010 rock check dam W02106010011 rock check dam W02106010012 rock check dam W02103010018 earthen berm W02103010016 dam Established vegetation Seed and mulch Sediment trap/basin Gabion Cap SWMU boundary SMA drainage

  10. Dredging as remediation for white phosphorus contamination at Eagle River Flats, Alaska

    SciTech Connect (OSTI)

    Walsh, M.R.; Collins, C.M.

    1998-08-01T23:59:59.000Z

    The Eagle River Flats impact area is a Ft. Richardson Superfund site. It is a salt marsh that is contaminated with white phosphorus (WP), and remediation of sediments in permanently ponded areas may require dredging. A remotely piloted dredging system was designed, constructed, and deployed at the Flats as part of the overall site remediation feasibility study. Experience gained over two years of engineering study and contract operation indicates that, although feasible and effective, this alternative is slow, difficult, and very expensive.

  11. Chapter Eight Rock Varnish

    E-Print Network [OSTI]

    Dorn, Ron

    ) Coating Description Carbonate skin Coating composed primarily of carbonate, usually calcium carbonate; the agent may be manganese, sulphate, carbonate, silica, iron, oxalate, organisms, or anthropogenic Dust, cyanobacteria, algae Nitrate crust Potassium and calcium nitrate coatings on rocks, often in caves and rock

  12. Incident at the Rock Pile

    E-Print Network [OSTI]

    Birgfeld, Doug

    2015-01-01T23:59:59.000Z

    At the off limit rock pile At a Portland school Where theDoug. “Incident at the Rock Pile” http://escholarship.org/Doug. “Incident at the Rock Pile” http://escholarship.org/

  13. A review of "The Eye of the Eagle: John Donne and the Legacy of Ignatius Loyola" by Francesca Bugliani Knox

    E-Print Network [OSTI]

    Harris, Mitchell M.

    2012-01-01T23:59:59.000Z

    18 seventeenth-century news Francesca Bugliani Knox. #31;e Eye of the Eagle: John Donne and the Legacy of Ignatius Loyola. Bern: Peter Lang, 2011. Religions and Discourse Series. 342 pp. $75.95. Review by #21;#18;#19;#24;#23;#30; #21;. #23...;#25;#31;#31;#18;#26;, #25;#29;#8;#29;#26;#19;#25;#27;#25; #24;#20; #30;#8;#30; (#26;#18;#20;#29;#5; #7;#25; #26;). When I spotted the provocative title of Francesca Bugliani Knox?s #31;e Eye of the Eagle: John Donne and the Legacy of Ignatius Loyola for the #15;rst...

  14. Alternative Fuels Data Center: Golden Eagle Delivers Beer With Natural Gas

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office511041cloth DocumentationProductsAlternative Fuels Clean CitiesStationTrucks Golden Eagle Delivers

  15. The Landscape of Klamath Basin Rock Art

    E-Print Network [OSTI]

    David, Robert James

    2012-01-01T23:59:59.000Z

    the Lines: Ethnographic Sources and Rock Art Interpretationwhen applying these sources toward rock art interpretation.information source for developing rock art interpretations.

  16. Water Use in the Eagle Ford Shale: An Economic and Policy Analysis of Water Supply and Demand 

    E-Print Network [OSTI]

    Arnett, Benton; Healy, Kevin; Jiang, Zhongnan; LeClere, David; McLaughlin, Leslie; Roberts, Joey; Steadman, Maxwell

    2014-01-01T23:59:59.000Z

    until 2025. In addition, a typical HF well in the Eagle Ford is estimated to consume about 13 acre - feet of water for a standard 5000 foot lateral . Approximately 90% of water for HF comes from fresh groundwater aquifers. This interaction of HF...

  17. Software Engineer RockAuto www.RockAuto.com

    E-Print Network [OSTI]

    Liblit, Ben

    Software Engineer ­ RockAuto www.RockAuto.com Position Description Software is the foundation · Familiarity with open-source development technologies like PHP, Perl, JavaScript and C (Linux system Lane, Madison, WI 53719) Why RockAuto? Strategic and tactical impact. We're an e-commerce company

  18. Microwave assisted hard rock cutting

    DOE Patents [OSTI]

    Lindroth, David P. (Apple Valley, MN); Morrell, Roger J. (Bloomington, MN); Blair, James R. (Inver Grove Heights, MN)

    1991-01-01T23:59:59.000Z

    An apparatus for the sequential fracturing and cutting of subsurface volume of hard rock (102) in the strata (101) of a mining environment (100) by subjecting the volume of rock to a beam (25) of microwave energy to fracture the subsurface volume of rock by differential expansion; and , then bringing the cutting edge (52) of a piece of conventional mining machinery (50) into contact with the fractured rock (102).

  19. Rock Bands/Rock Brands: Mediation and Musical Performance in Post-liberalization Bangalore

    E-Print Network [OSTI]

    Coventry, Chloe Louise

    2013-01-01T23:59:59.000Z

    these recorded sources important rock pedagogical tools inwere a primary source of western rock music for young fans,Nevertheless, a source of funding for rock music performance

  20. Rock Properties Model

    SciTech Connect (OSTI)

    C. Lum

    2004-09-16T23:59:59.000Z

    The purpose of this model report is to document the Rock Properties Model version 3.1 with regard to input data, model methods, assumptions, uncertainties and limitations of model results, and qualification status of the model. The report also documents the differences between the current and previous versions and validation of the model. The rock properties model provides mean matrix and lithophysae porosity, and the cross-correlated mean bulk density as direct input to the ''Saturated Zone Flow and Transport Model Abstraction'', MDL-NBS-HS-000021, REV 02 (BSC 2004 [DIRS 170042]). The constraints, caveats, and limitations associated with this model are discussed in Section 6.6 and 8.2. Model validation accomplished by corroboration with data not cited as direct input is discussed in Section 7. The revision of this model report was performed as part of activities being conducted under the ''Technical Work Plan for: The Integrated Site Model, Revision 05'' (BSC 2004 [DIRS 169635]). The purpose of this revision is to bring the report up to current procedural requirements and address the Regulatory Integration Team evaluation comments. The work plan describes the scope, objectives, tasks, methodology, and procedures for this process.

  1. Iron and Steel Phosphate Rock

    E-Print Network [OSTI]

    Torgersen, Christian

    Lime Lithium Magnesium Manganese Mercury Mica Molybdenum Nickel Nitrogen Peat Perlite Phosphate Rock . . . . . . . . . . . . . . . . . . . . . . . . 194 Appendix C--Resource/Reserve Definitions . . . . . . 195 Commodities: Abrasives (Manufactured

  2. Iron and Steel Phosphate Rock

    E-Print Network [OSTI]

    Torgersen, Christian

    Mica Molybdenum Nickel Nitrogen Peat Perlite Phosphate Rock Platinum Potash Pumice Quartz Crystal Rare . . . . . . . . . . . . . . . . . . . . . . . . 190 Appendix C--A Resource/Reserve Classification for Minerals

  3. Iron and Steel Phosphate Rock

    E-Print Network [OSTI]

    Torgersen, Christian

    Phosphate Rock Platinum Potash Pumice Quartz Crystal Rare Earths Rhenium Rubidium Salt Sand and Gravel Graphite Peat Sulfur Beryllium Gypsum Perlite Talc Bismuth Hafnium Phosphate Rock Tantalum Boron Helium on the USGS--the Federal source for science about the Earth, its natural and living resources, natural hazards

  4. Sandia National Laboratories: AREVA

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

    Concentrating Solar Power, Energy, Energy Storage, Facilities, National Solar Thermal Test Facility, News, News & Events, Partnership, Renewable Energy, Research &...

  5. Oil and Gas CDT Bots in Rocks: Intelligent Rock Deformation for Fault Rock

    E-Print Network [OSTI]

    Henderson, Gideon

    Heriot-Watt University, Institute of Petroleum Engineering Supervisory Team · Dr Helen Lewis, Heriot://www.pet.hw.ac.uk/staff-directory/jimsomerville.htm Key Words Nano/Micro sensors; faults; fault zones; geomechanics; rock mechanics; rock deformation-deformed equivalent, a different lab-deformed example and a geomechanical simulation of a fault zone showing permanent

  6. The distribution of neutral hydrogen around high-redshift galaxies and quasars in the EAGLE simulation

    E-Print Network [OSTI]

    Rahmati, Alireza; Bower, Richard G; Crain, Robert A; Furlong, Michelle; Schaller, Matthieu; Theuns, Tom

    2015-01-01T23:59:59.000Z

    The observed high covering fractions of neutral hydrogen (HI) with column densities above $\\sim 10^{17} \\rm{cm}^{-2}$ around Lyman-Break Galaxies (LBGs) and bright quasars at redshifts z ~ 2-3 has been identified as a challenge for simulations of galaxy formation. We use the EAGLE cosmological, hydrodynamical simulation, which has been shown to reproduce a wide range of galaxy properties and for which the subgrid feedback was calibrated without considering gas properties, to study the distribution of HI around high-redshift galaxies. We predict the covering fractions of strong HI absorbers ($N_{\\rm{HI}} \\gtrsim 10^{17} \\rm{cm}^{-2}$) inside haloes to increase rapidly with redshift but to depend only weakly on halo mass. For massive ($M_{200} \\gtrsim 10^{12} {\\rm M_{\\odot}}$) halos the covering fraction profiles are nearly scale-invariant and we provide fitting functions that reproduce the simulation results. While efficient feedback is required to increase the HI covering fractions to the high observed values...

  7. Shotgun cartridge rock breaker

    DOE Patents [OSTI]

    Ruzzi, Peter L. (Eagan, NM); Morrell, Roger J. (Bloomington, MN)

    1995-01-01T23:59:59.000Z

    A rock breaker uses shotgun cartridges or other firearm ammunition as the explosive charge at the bottom of a drilled borehole. The breaker includes a heavy steel rod or bar, a gun with a firing chamber for the ammunition which screws onto the rod, a long firing pin running through a central passage in the rod, and a firing trigger mechanism at the external end of the bar which strikes the firing pin to fire the cartridge within the borehole. A tubular sleeve surround the main body of the rod and includes slits the end to allow it to expand. The rod has a conical taper at the internal end against which the end of the sleeve expands when the sleeve is forced along the rod toward the taper by a nut threaded onto the external end of the rod. As the sleeve end expands, it pushes against the borehole and holds the explosive gasses within, and also prevents the breaker from flying out of the borehole. The trigger mechanism includes a hammer with a slot and a hole for accepting a drawbar or drawpin which, when pulled by a long cord, allows the cartridge to be fired from a remote location.

  8. Strength of transversely isotropic rocks

    E-Print Network [OSTI]

    Pei, Jianyong, 1975-

    2008-01-01T23:59:59.000Z

    This thesis proposes a new Anisotropic Matsuoka-Nakai (AMN) criterion to characterize the failure of transversely isotropic rocks under true triaxial stress states. One major obstacle in formulating an anisotropic criterion ...

  9. Evaluating the Economics of Best Management Practices for Tarrant Regional Water District’s Eagle Mountain Lake Watershed

    E-Print Network [OSTI]

    Johnson, Jason L.

    manag e me n t unit of analys i s is one designated wetland project encompassing 20.6 acres. In-Lake BMPs Based on feedback from TRWD personne l , it was noted that BMP 20 (Hypolimnetic Aeration ) and BMP 21 (P Inactiva t i o n with Alum... years. The manage me n t unit of analysi s is one designa t e d hypol i mn e t i c aerat i o n proj ec t withi n the Eagle Mountai n Lake watersh e d . BMP 21 P Inactivation with Alum. T h e addition of powdered alum at variou s lake depths...

  10. Rock physics at Los Alamos Scientific Laboratory

    SciTech Connect (OSTI)

    Not Available

    1980-01-01T23:59:59.000Z

    Rock physics refers to the study of static and dynamic chemical and physical properties of rocks and to phenomenological investigations of rocks reacting to man-made forces such as stress waves and fluid injection. A bibliography of rock physics references written by LASL staff members is given. Listing is by surname of first author. (RWR)

  11. Superfund Record of Decision (EPA Region 10): Wyckoff/Eagle Harbor, WA. (First remedial action), September 1992

    SciTech Connect (OSTI)

    Not Available

    1992-09-29T23:59:59.000Z

    The 3,780-acre Wyckoff/Eagle Harbor site is located on the east side of Bainbridge Island, in Central Puget Sound, Kitsap County, Washington. The site consists of an inactive 40-acre wood treating facility owned by Wyckoff, the adjacent 500-acre Eagle Harbor and other upland sources of contamination to the Harbor, including a former shipyears. The selected remedial action for this site includes dredging, dewatering, excavating approximately 1,000 to 7,000 cubic yards of intertidal sediment that exceed levels of 5 mg/kg mercury and/or lower moderate PAH concentrations, followed by treatment using solidification/stabilization, if necessary, to comply with LDR as determined by bench scale tests; transporting sediment, which cannot be treated to meet LDR offsite for disposal at a RCRA-permitted landfill; treating wastewater from the dewatering process using carbon adsorption before discharge into the harbor; capping over sediment in areas of high concern with a 1-meter thick layer of clean sediment; placing a thin layer of clean sediment in subtidal areas of low to moderate concern to enhance natural sediment recovery; conducting long-term environmental monitoring; and implementing institutional controls to prevent exposure to contaminated fish and shellfish. The estimated present worth cost for this remedial action ranges from $6,200,000 to $16,000,000 which includes a present worth O M cost of $1,100,000 for 10 years.

  12. Electronics Division Technical Note No. 189 File: \\\\EAGLE\\cv-cdl-sis\\Docs\\Rack\\SIS Mixer Bias Supply\\Simulation\\Report2.doc Page 1 of 5

    E-Print Network [OSTI]

    Groppi, Christopher

    1 to protect the mixer junction from static discharge1 . The mixers are powered by bias suppliesElectronics Division Technical Note No. 189 File: \\\\EAGLE\\cv-cdl-sis\\Docs\\Rack\\SIS Mixer Bias Supply\\Simulation\\Report2.doc Page 1 of 5 Stability Analysis of SIS Mixer Bias Supply with 1K Ohm

  13. Reconstruction of Sedimentary Rock Based on Mechanical Properties

    E-Print Network [OSTI]

    Jin, Guodong; Patzek, Tad W.; Silin, Dmitry B.

    2008-01-01T23:59:59.000Z

    the veri?cation of rock mechanical properties. The dynamicis white. IV. ROCK MECHANICAL PROPERTIES FIG. 9: Cementationextracting meaningful rock transport properties from these

  14. Iron and Steel Phosphate Rock

    E-Print Network [OSTI]

    Torgersen, Christian

    Kyanite Lead Lime Lithium Magnesium Manganese Mercury Mica Molybdenum Nickel Nitrogen Peat Perlite Graphite Peat Sulfur Beryllium Gypsum Perlite Talc Bismuth Hafnium Phosphate Rock Tantalum Boron Helium information on the USGS--the Federal source for science about the Earth, its natural and living resources

  15. Lichen: the challenge for rock art conservation

    E-Print Network [OSTI]

    Dandridge, Debra Elaine

    2007-04-25T23:59:59.000Z

    This study investigates the effects that lichens have on rock surfaces in which ancient rock art (petroglyphs and pictographs) may be found. The study area includes four sites in the United States: one quartzite site in southwest Minnesota, two...

  16. ANNUAL FISH PASSAGE REPORT ROCK ISLAND DAM

    E-Print Network [OSTI]

    ANNUAL FISH PASSAGE REPORT ROCK ISLAND DAM COLUMBIA RIVER, WASHINGTON, 1959 :y .iiJA/i-3ri ^' WUUUi. ANNUAL FISH PASSAGE REPORT - ROCK ISLAND DAM COLUMBIA RIVER, WASHINGTON, 1959 by Paul D. Zimmer, Clifton and observations 10 Summary 13 #12;#12;ANNUAL FISH PASSAGE REPORT - ROCK ISLAND DAM COLUMBIA RIVER, WASHINGTON

  17. ANNUAL FISH PASSAGE REPORT ROCK ISLAND DAM

    E-Print Network [OSTI]

    42) ANNUAL FISH PASSAGE REPORT ROCK ISLAND DAM COLUMBIA RIVER, WASHINGTON 1961 Marine Biological. McKeman, Director ANNUAL FISH PASSAGE REPORT - ROCK ISLAND DAM COLUMBIA RIVER, WASHINGTON, 1961--Fisheries No. 421 Washington, D. C. April 1962 #12;Rock Island Dam, Columbia River, Washington ii #12;CONTENTS

  18. Annual Fish Passage Report -Rock Island Dam

    E-Print Network [OSTI]

    Annual Fish Passage Report - Rock Island Dam Columbia River, Washington, 1965 By Paul D. Zimmer L. McKeman, Director Annual Fish Passage Report - Rock Island Dam Columbia River, Washington, 1965;#12;Annual Fish Passage Report - Rock Island Dam Columbia River, Washington, 1965 By PAUL D. ZIMMER, Fishery

  19. Introduction 1.1 Why study rocks?

    E-Print Network [OSTI]

    Lee, Cin-Ty Aeolus

    2 Chapter 1 Introduction 1.1 Why study rocks? I am a petrologist and I study rocks. Petrology and modification of certain types of rocks. On one level, petrology involves the art of identifying and classifying. This is of course the reverse of the historical development of petrology. I have chosen this approach because all

  20. Rock magnetism of remagnetized carbonate rocks: another look MIKE JACKSON* & NICHOLAS L. SWANSON-HYSELL

    E-Print Network [OSTI]

    Swanson-Hysell, Nicholas

    Rock magnetism of remagnetized carbonate rocks: another look MIKE JACKSON* & NICHOLAS L. SWANSON-HYSELL Institute for Rock Magnetism, Winchell School of Earth Sciences, University of Minnesota, Minnesota, US, dominantly in the super- paramagnetic and stable single-domain size range, also give rise to distinctive rock-magnetic

  1. Water Rock Interaction [WRI 14] Chemical weathering of granitic rocks: experimental approach and Pb-Li

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    of water/rock interactions both in terms of source and extent of weathering, by measuring major and traceWater Rock Interaction [WRI 14] Chemical weathering of granitic rocks: experimental approach and Pb, France Abstract In order to characterize water/rock interactions of granite, we performed laboratory

  2. Analysis of rock-fall and rock-fall avalanche seismograms in the French Alps

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    the source rock slope (Figure 1), the falling mass strikes the talus slope and breaks up and/or bounces1 Analysis of rock-fall and rock-fall avalanche seismograms in the French Alps J. Deparis, D reviews seismograms from 10 rock-fall events recorded between 1992 and 2001 by the permanent seismological

  3. 2.20 Properties of Rocks and Minerals -Magnetic Properties of Rocks and Minerals

    E-Print Network [OSTI]

    Dunin-Borkowski, Rafal E.

    2.20 Properties of Rocks and Minerals - Magnetic Properties of Rocks and Minerals R. J. Harrison, R 621 622 623 623 579 #12;580 Magnetic Properties of Rocks and Minerals 2.20.5.3 2.20.5.4 2, and are present in all types of rocks, sediments, and soils. These minerals retain a memory of the geomagnetic

  4. 37The Oldest Lunar Rocks Apollo astronauts recovered over 840 pounds of lunar rocks, and during

    E-Print Network [OSTI]

    37The Oldest Lunar Rocks Apollo astronauts recovered over 840 pounds of lunar rocks, and during applied to the different rock samples. Location Mission Rock Type Age (Myr) Mare Tranquillitatis Apollo-11 Basalt 3,500 Oceanus Procellarum Apollo-12 Basalt 3,200 Fra Mauro Formation Apollo-14 Basalt 4,150 Apollo

  5. Evaluating the Economics of Best Management Practices for Tarrant Regional Water District’s Eagle Mountain Lake Watershed 

    E-Print Network [OSTI]

    Johnson, Jason L.

    2011-01-01T23:59:59.000Z

    Economics Texas A&M University and Texas AgriLife Extension Service Executive Summary The object i ve of this asses s me n t was to identi f y the most cost-e f f e c t i v e means of reduci n g (and/o r preven t i n g ) tota l phosph o r u s (TP...) inflow s into the Eagle Mountain Lake from a compr e h e n s i v e set of Best Manag e me n t Pract i c e s (BMPs ) . Additi o na l l y , the reduce d total nitrog e n (TN), and sedime n t inflow s result i n g from adoption of these BMPs was also...

  6. Relative Permeability of Fractured Rock

    SciTech Connect (OSTI)

    Mark D. Habana

    2002-06-30T23:59:59.000Z

    Contemporary understanding of multiphase flow through fractures is limited. Different studies using synthetic fractures and various fluids have yielded different relative permeability-saturation relations. This study aimed to extend the understanding of multiphase flow by conducting nitrogen-water relative permeability experiments on a naturally-fractured rock from The Geysers geothermal field. The steady-state approach was used. However, steady state was achieved only at the endpoint saturations. Several difficulties were encountered that are attributed to phase interference and changes in fracture aperture and surface roughness, along with fracture propagation/initiation. Absolute permeabilities were determined using nitrogen and water. The permeability values obtained change with the number of load cycles. Determining the absolute permeability of a core is especially important in a fractured rock. The rock may change as asperities are destroyed and fractures propagate or st rain harden as the net stresses vary. Pressure spikes occurred in water a solute permeability experiments. Conceptual models of an elastic fracture network can explain the pressure spike behavior. At the endpoint saturations the water relative permeabilities obtained are much less than the nitrogen gas relative permeabilities. Saturations were determined by weighing and by resistivity calculations. The resistivity-saturation relationship developed for the core gave saturation values that differ by 5% from the value determined by weighing. Further work is required to complete the relative permeability curve. The steady-state experimental approach encountered difficulties due to phase interference and fracture change. Steady state may not be reached until an impractical length of time. Thus, unsteady-state methods should be pursued. In unsteady-state experiments the challenge will be in quantifying rock fracture change in addition to fluid flow changes.

  7. Assessment of the geothermal resources of Carson-Eagle valleys and Big Smoky Valley, Nevada. First annual report, May 1, 1979-May 30, 1980

    SciTech Connect (OSTI)

    Trexler, D.T.; Koenig, B.A.; Flynn, T.; Bruce, J.L.

    1980-01-01T23:59:59.000Z

    Two geothermal investigations were completed in three Nevada locations. The regions studied were selected from areas outlined as having direct utilization potential (Trexler and others, 1979) and included the Carson-Eagle Valley, Bis Smoky Valley and Caliente. Studies were organized around the completion of a group of tasks in each area. These tasks included: geologic reconnaissance, gravity surveys, aerial photography, fluid sampling and analysis, shallow depth temperature probe surveys, soil mercury surveys, shallow electrical resistivity measurements, and temperature gradient hole drilling. Goals of the project were to provide regional information about the nature and extent of the resources and to offer a critical evaluation of the techniques employed. Results from the work in the Carson-Eagle Valley and Big Smoky Valley are presented. (MHR)

  8. Hot Dry Rock; Geothermal Energy

    SciTech Connect (OSTI)

    None

    1990-01-01T23:59:59.000Z

    The commercial utilization of geothermal energy forms the basis of the largest renewable energy industry in the world. More than 5000 Mw of electrical power are currently in production from approximately 210 plants and 10 000 Mw thermal are used in direct use processes. The majority of these systems are located in the well defined geothermal generally associated with crustal plate boundaries or hot spots. The essential requirements of high subsurface temperature with huge volumes of exploitable fluids, coupled to environmental and market factors, limit the choice of suitable sites significantly. The Hot Dry Rock (HDR) concept at any depth originally offered a dream of unlimited expansion for the geothermal industry by relaxing the location constraints by drilling deep enough to reach adequate temperatures. Now, after 20 years intensive work by international teams and expenditures of more than $250 million, it is vital to review the position of HDR in relation to the established geothermal industry. The HDR resource is merely a body of rock at elevated temperatures with insufficient fluids in place to enable the heat to be extracted without the need for injection wells. All of the major field experiments in HDR have shown that the natural fracture systems form the heat transfer surfaces and that it is these fractures that must be for geothermal systems producing from naturally fractured formations provide a basis for directing the forthcoming but, equally, they require accepting significant location constraints on HDR for the time being. This paper presents a model HDR system designed for commercial operations in the UK and uses production data from hydrothermal systems in Japan and the USA to demonstrate the reservoir performance requirements for viable operations. It is shown that these characteristics are not likely to be achieved in host rocks without stimulation processes. However, the long term goal of artificial geothermal systems developed by systematic engineering procedures at depth may still be attained if high temperature sites with extensive fracturing are developed or exploited. [DJE -2005

  9. Big Bang Day : Physics Rocks

    ScienceCinema (OSTI)

    None

    2011-04-25T23:59:59.000Z

    Is particle physics the new rock 'n' roll? The fundamental questions about the nature of the universe that particle physics hopes to answer have attracted the attention of some very high profile and unusual fans. Alan Alda, Ben Miller, Eddie Izzard, Dara O'Briain and John Barrowman all have interests in this branch of physics. Brian Cox - CERN physicist, and former member of 90's band D:Ream, tracks down some very well known celebrity enthusiasts and takes a light-hearted look at why this subject can appeal to all of us.

  10. Laboratory characterization of rock joints

    SciTech Connect (OSTI)

    Hsiung, S.M.; Kana, D.D.; Ahola, M.P.; Chowdhury, A.H.; Ghosh, A. [Southwest Research Inst., San Antonio, TX (United States). Center for Nuclear Waste Regulatory Analyses

    1994-05-01T23:59:59.000Z

    A laboratory characterization of the Apache Leap tuff joints under cyclic pseudostatic and dynamic loads has been undertaken to obtain a better understanding of dynamic joint shear behavior and to generate a complete data set that can be used for validation of existing rock-joint models. Study has indicated that available methods for determining joint roughness coefficient (JRC) significantly underestimate the roughness coefficient of the Apache Leap tuff joints, that will lead to an underestimation of the joint shear strength. The results of the direct shear tests have indicated that both under cyclic pseudostatic and dynamic loadings the joint resistance upon reverse shearing is smaller than that of forward shearing and the joint dilation resulting from forward shearing recovers during reverse shearing. Within the range of variation of shearing velocity used in these tests, the shearing velocity effect on rock-joint behavior seems to be minor, and no noticeable effect on the peak joint shear strength and the joint shear strength for the reverse shearing is observed.

  11. The Landscape of Klamath Basin Rock Art

    E-Print Network [OSTI]

    David, Robert James

    2012-01-01T23:59:59.000Z

    I incorporate results from the XRF and projectile pointRay Fluorescence (hereafter, XRF) to help affiliate rock artstudies or reports in which XRF analysis have been done.

  12. Rock Bands/Rock Brands: Mediation and Musical Performance in Post-liberalization Bangalore

    E-Print Network [OSTI]

    Coventry, Chloe Louise

    2013-01-01T23:59:59.000Z

    as in its modes of fandom, production and dissemination. Inaspects of rock music fandom: America had everything a youngthe beginnings of rock music fandom in India, even while, as

  13. Rock-Water Interactions In Hot Dry Rock Geothermal Systems- Field...

    Open Energy Info (EERE)

    Rock-Water Interactions In Hot Dry Rock Geothermal Systems- Field Investigations Of In Situ Geochemical Behavior Jump to: navigation, search OpenEI Reference LibraryAdd to library...

  14. Manufactured caverns in carbonate rock

    DOE Patents [OSTI]

    Bruce, David A.; Falta, Ronald W.; Castle, James W.; Murdoch, Lawrence C.

    2007-01-02T23:59:59.000Z

    Disclosed is a process for manufacturing underground caverns suitable in one embodiment for storage of large volumes of gaseous or liquid materials. The method is an acid dissolution process that can be utilized to form caverns in carbonate rock formations. The caverns can be used to store large quantities of materials near transportation facilities or destination markets. The caverns can be used for storage of materials including fossil fuels, such as natural gas, refined products formed from fossil fuels, or waste materials, such as hazardous waste materials. The caverns can also be utilized for applications involving human access such as recreation or research. The method can also be utilized to form calcium chloride as a by-product of the cavern formation process.

  15. WAVE GENERATIONS FROM CONFINED EXPLOSIONS IN ROCKS

    E-Print Network [OSTI]

    Stewart, Sarah T.

    WAVE GENERATIONS FROM CONFINED EXPLOSIONS IN ROCKS C. L. Liu and Thomas J. Ahrens Seismological Laboratory, California Institute of Technology, Pasadena, CA 91125 In order to record P- and S-waves on the interactions between incident P- and SV-waves and free-surfaces of rocks. The relations between particle

  16. Rheology of rock glaciers: a preliminary assessment

    SciTech Connect (OSTI)

    Giardino, J.R.; Vitek, J.D.; Hoskins, E.R.

    1985-01-01T23:59:59.000Z

    Movement of rock debris under the influence of gravity, i.e., mass movement, generates a range of phenomena from soil creep, through solifluction,debris flows and rock glaciers to rock falls. Whereas the resultant forms of these phenomena are different, common elements in the mechanics of movement are utilized in the basic interpretation of the processes of formation. Measurements of morphologic variables provide data for deductive analyses of processes that operate too slowly to observe or for processes that generated relict phenomena. External and internal characteristics or rock glacier morphometry and measured rates of motion serve as the basis for the development of a rheological model to explain phenomena classified as rock glaciers. A rock glacier in the Sangre de Cristo Mountains of Southern Colorado, which exhibits a large number of ridges and furrows and lichen bare fronts of lobes, suggests present day movement. A strain-net established on the surface provides evidence of movement characteristics. These data plus morphologic and fabric data suggest two rheological models to explain the flow of this rock glacier. Model one is based upon perfect plastic flow and model two is based upon stratified fluid movement with viscosity changing with depth. These models permit a better understanding of the movement mechanics and demonstrate that catastrophic events and slow creep contribute to the morphologic characteristics of this rock glacier.

  17. Damage and plastic deformation of reservoir rocks

    E-Print Network [OSTI]

    Ze'ev, Reches

    Damage and plastic deformation of reservoir rocks: Part 1. Damage fracturing Seth Busetti, Kyran mechanics, fluid flow in fractured reservoirs, and geomechanics in nonconventional reservoirs. Kyran Mish finite deformation of reservoir rocks. We present an at- tempt to eliminate the main limitations

  18. ANNUAL FISH PASSAGE REPORT ROCK ISLAND DAM

    E-Print Network [OSTI]

    ANNUAL FISH PASSAGE REPORT ROCK ISLAND DAM COLUMBIA RIVER, WASHINGTON 1960 . SPECIAL SCIENTIFIC ISLAND DAM COLUMBIA RIVER, WASHINGTON, 1960 by Paul D. Zimmer and Clifton C. Davidson United States Fish This annual report of fishway operations at Rock Island Dam in 1960 is dedicated to the memory of co

  19. ROCK ELASTIC PROPERTIES: DEPENDENCE ON MICROSTRUCTURE

    E-Print Network [OSTI]

    ROCK ELASTIC PROPERTIES: DEPENDENCE ON MICROSTRUCTURE James G. Berryman and Patricia A. Berge Lawrence Livermore National Laboratory P. O. Box 808 L­202 Livermore, CA 94551­9900 #12; ROCK ELASTIC PROPERTIES: DEPENDENCE ON MICROSTRUCTURE James G. Berryman and Patricia A. Berge Lawrence Livermore National

  20. Specific energy for pulsed laser rock drilling.

    SciTech Connect (OSTI)

    Xu, Z.; Reed, C. B.; Kornecki, G.; Gahan, B. C.; Parker, R. A.; Batarseh, S.; Graves, R. M.; Figueroa, H.; Skinner, N.; Technology Development

    2003-02-01T23:59:59.000Z

    Application of advanced high power laser technology to oil and gas well drilling has been attracting significant research interests recently among research institutes, petroleum industries, and universities. Potential laser or laser-aided oil and gas well drilling has many advantages over the conventional rotary drilling, such as high penetration rate, reduction or elimination of tripping, casing, and bit costs, and enhanced well control, perforating and side-tracking capabilities. The energy required to remove a unit volume of rock, namely the specific energy (SE), is a critical rock property data that can be used to determine both the technical and economic feasibility of laser oil and gas well drilling. When a high power laser beam is applied on a rock, it can remove the rock by thermal spallation, melting, or vaporization depending on the applied laser energy and the way the energy is applied. The most efficient rock removal mechanism would be the one that requires the minimum energy to remove a unit volume of rock. Samples of sandstone, shale, and limestone were prepared for laser beam interaction with a 1.6 kW pulsed Nd:yttrium-aluminum-garnet laser beam to determine how the beam size, power, repetition rate, pulse width, exposure time and energy can affect the amount of energy transferred to the rock for the purposes of spallation, melting, and vaporization. The purpose of the laser rock interaction experiment was to determine the optimal parameters required to remove a maximum rock volume from the samples while minimizing energy input. Absorption of radiant energy from the laser beam gives rise to the thermal energy transfer required for the destruction and removal of the rock matrix. Results from the tests indicate that each rock type has a set of optimal laser parameters to minimize specific energy (SE) values as observed in a set of linear track and spot tests. As absorbed energy outpaces heat diffusion by the rock matrix, local temperatures can rise to the melting points of the minerals and quickly increase observed SE values. Tests also clearly identified the spallation and melting zones for shale samples while changing the laser power. The lowest SE values are obtained in the spalling zone just prior to the onset of mineral melt. The laser thermally spalled and saw mechanically cut rocks show similarity of surface microstructure. The study also found that increasing beam repetition rate within the same material removal mechanism would increase the material removal rate, which is believed due to an increase of maximum temperature, thermal cycling frequency, and intensity of laser-driven shock wave within the rock.

  1. FRACTURE DETECTION IN CRYSTALLINE ROCK USING ULTRASONIC SHEAR WAVES

    E-Print Network [OSTI]

    Waters, K.H.

    2011-01-01T23:59:59.000Z

    the piezoelectric source plate and the rock surface. With aThe S^j sources were bonded to the rock surface with a fast-^ source plate was epoxied in position on the rock specimen.

  2. altered granitic rock: Topics by E-print Network

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

    22 Everglades National Park Groundwater wells Surface water monitoring locations Rock mining locations 12 Demers, Nora Egan 211 Nova Scotia Rock Garden Club Membership...

  3. Regional Geology: GIS Database for Alternative Host Rocks and...

    Energy Savers [EERE]

    Regional Geology: GIS Database for Alternative Host Rocks and Potential Siting Guidelines Regional Geology: GIS Database for Alternative Host Rocks and Potential Siting Guidelines...

  4. aspo hard rock: Topics by E-print Network

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

    Bayesian estimation of rock mass boundary conditions with applications to the AECL underground research laboratory F. Tonon*,1 conditions for rock mass models is...

  5. antarctic rocks colonized: Topics by E-print Network

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

    Bayesian estimation of rock mass boundary conditions with applications to the AECL underground research laboratory F. Tonon*,1 conditions for rock mass models is...

  6. algonquin class rocks: Topics by E-print Network

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

    Bayesian estimation of rock mass boundary conditions with applications to the AECL underground research laboratory F. Tonon*,1 conditions for rock mass models is...

  7. acidic crystalline rock: Topics by E-print Network

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

    Bayesian estimation of rock mass boundary conditions with applications to the AECL underground research laboratory F. Tonon*,1 conditions for rock mass models is...

  8. aphanitic melt rocks: Topics by E-print Network

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

    Bayesian estimation of rock mass boundary conditions with applications to the AECL underground research laboratory F. Tonon*,1 conditions for rock mass models is...

  9. aespoe hard rock: Topics by E-print Network

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

    Bayesian estimation of rock mass boundary conditions with applications to the AECL underground research laboratory F. Tonon*,1 conditions for rock mass models is...

  10. Stress and fault rock controls on fault zone hydrology, Coso...

    Open Energy Info (EERE)

    rock controls on fault zone hydrology, Coso geothermal field, CA Abstract In crystalline rock of the Coso Geothermal Field, CA, fractures are the primary source of permeability....

  11. Sandia National Laboratories: Areva Solar

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

    Labs Join Forces for CLFR Molten-Salt Storage On September 17, 2012, in Concentrating Solar Power, Customers & Partners, Energy, News, Partnership, Renewable Energy, Solar...

  12. NOPR AREVA | Department of Energy

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directed offOCHCO2:Introduction toManagement of theTechno-economicOctoberNETLForeignDepartmentFact

  13. Areva Koblitz | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:Ezfeedflag JumpID-fTriWildcatAntrim County,DelhiArdmore, Pennsylvania:

  14. Rock bed behavior and reverse thermosiphon effects

    SciTech Connect (OSTI)

    Perry, J.E.

    1980-01-01T23:59:59.000Z

    Two rock beds, in the Mark Jones and Doug Balcomb houses, have been instrumented, monitored, and analyzed. Observed experimental operation has been compared with, or explained by, theoretical predictions. The latter are based on one-dimensional finite-difference computer calculation of rock bed charging and discharging, with fixed or variable inputs of air flow rate and temperature. Both rock beds exhibit appreciable loss of stored heat caused by lack of backdraft dampers or incomplete closure of such dampers. These topics are discussed, and some improvements that might be made in future installations are noted.

  15. Economic and Conservation Evaluation of Capital Renovation Projects: Maverick County Water Control and Improvement District No. 1 (Eagle Pass) – Lining Main Canal – Preliminary

    E-Print Network [OSTI]

    Rister, M. Edward; Lacewell, Ronald D.; Sturdivant, Allen W.; Robinson, John R.C.; Popp, Michael C.

    is the only source of water for the City of Eagle Pass and the towns of Quemado and El Indio. Recent agricultural water use during calendar years 1994-1998 for the District has ranged from 42,677 ac-ft to 105,893 ac-ft, with the five-year average at 71,657 ac... savings forthcoming from the total project are estimated, using amortization procedures, to be 8,084 ac-ft of water per year and 2,041,095,338 BTUs (598,211 kwh) of energy per year. The calculated economic and financial cost of water savings is estimated...

  16. Rock Slopes from Mechanics to Decision Making

    E-Print Network [OSTI]

    Einstein, Herbert H.

    Rock slope instabilities are discussed in the context of decision making for risk assessment and management. Hence, the state of the slope and possible failure mechanism need to be defined first. This is done with geometrical ...

  17. First Rocks from Outside the Solar System

    SciTech Connect (OSTI)

    Westphal, Andrew

    2014-10-17T23:59:59.000Z

    Andrew Westphal presents his findings in examining the first rocks from outside the solar system at our '8 Big Ideas' Science at the Theater event on October 8th, 2014, in Oakland, California.

  18. Determination of mechanical properties of reservoir rock

    E-Print Network [OSTI]

    Barnett, Ashley

    1993-01-01T23:59:59.000Z

    Apparatus, experimental procedure, and methodology have been developed to determine the mechanical response of reservoir rock. The apparatus is capable of subjecting cylindrical core specimens to triaxial stress states and temperatures...

  19. Stress-induced transverse isotropy in rocks

    SciTech Connect (OSTI)

    Schwartz, L.M.; Murphy, W.F. III [Schlumberger-Doll Research Center, Ridgefield, CT (United States); Berryman, J.G. [Lawrence Livermore National Lab., CA (United States)

    1994-03-28T23:59:59.000Z

    The application of uniaxial pressure can induce elastic anisotropy in otherwise isotropic rock. We consider models based on two very different rock classes, granites and weakly consolidated granular systems. We show that these models share common underlying assumptions, that they lead to similar qualitative behavior, and that both provide a microscopic basis for elliptical anisotropy. In the granular case, we make experimentally verifiable predictions regarding the horizontally propagating modes based on the measured behavior of the vertical modes.

  20. Design of tabular excavations in foliated rock: an integrated numerical

    E-Print Network [OSTI]

    to the mineralized zone (development openings), extracting the ore from the surrounding host rock (stopes. The first stage in the design process is the characterization of the rock mass using both in situ of the mining process, requiring that the rock mass stability, both within the orebody and in the rock adjacent

  1. Mixture Theories for Rock Properties James G. Berryman

    E-Print Network [OSTI]

    Mixture Theories for Rock Properties James G. Berryman Lawrence Livermore National Laboratory by Batchelor [3], Hale [41], Hashin [42], Torquato [95], and Willis [110] are also recommended. 1.1. Rocks Are Inhomogeneous Materials A rock is a naturally occurring mixture of minerals. Rocks are normally inhomogeneous

  2. Deep drilling technology for hot crystalline rock

    SciTech Connect (OSTI)

    Rowley, J.C.

    1984-01-01T23:59:59.000Z

    The development of Hot Dry Rock (HDR) geothermal systems at the Fenton Hill, New Mexico site has required the drilling of four deep boreholes into hot, Precambrian granitic and metamorphic rocks. Thermal gradient holes, four observation wells 200 m (600 ft) deep, and an exploration core hole 800 m (2400 ft) deep guided the siting of the four deep boreholes. Results derived from the exploration core hole, GT-1 (Granite Test No. 1), were especially important in providing core from the granitic rock, and establishing the conductive thermal gradient and heat flow for the granitic basement rocks. Essential stratigraphic data and lost drilling-fluid zones were identified for the volcanic and sedimentary rocks above the contact with the crystalline basement. Using this information drilling strategies and well designs were then devised for the planning of the deeper wells. The four deep wells were drilled in pairs, the shallowest were planned and drilled to depths of 3 km in 1975 at a bottom-hole temperature of nearly 200/sup 0/C. These boreholes were followed by a pair of wells, completed in 1981, the deepest of which penetrated the Precambrian basement to a vertical depth of 4.39 km at a temperature of 320/sup 0/C.

  3. Source rock maturation, San Juan sag

    SciTech Connect (OSTI)

    Gries, R.R.; Clayton, J.L.

    1989-09-01T23:59:59.000Z

    Kinetic modeling for thermal histories was simulated for seven wells in the San Juan sag honoring measured geochemical data. Wells in the area of Del Norte field (Sec. 9, T40N, R5E), where minor production has been established from an igneous sill reservoir, show that the Mancos Shale source rocks are in the mature oil generation window as a combined result of high regional heat flow and burial by approximately 2,700 m of Oligocene volcanic rocks. Maturation was relatively recent for this area and insignificant during Laramide subsidence. In the vicinity of Gramps field (Sec. 24, T33N, R2E) on the southwest flank of the San Juan sag, these same source rocks are exposed due to erosion of the volcanic cover but appear to have undergone a similar maturation history. At the north and south margins of the sag, two wells (Champlin 34A-13, Sec. 13, T35N, R4.5E; and Champlin 24A-1, Sec. 1, T44N, R5E) were analyzed and revealed that although the regional heat flow was probably similar to other wells, the depth of burial was insufficient to cause maturation (except where intruded by thick igneous sills that caused localized maturation). The Meridian Oil 23-17 South Fork well (Sec. 17, T39N, R4E) was drilled in a deeper part of the San Juan sag, and source rocks were intruded by numerous igneous sills creating a complex maturation history that includes overmature rocks in the lowermost Mancos Shale, possible CO{sub 2} generation from the calcareous Niobrara Member of the Mancos Shale, and mature source rocks in the upper Mancos Shale.

  4. Rock melting tool with annealer section

    DOE Patents [OSTI]

    Bussod, Gilles Y. (Santa Fe, NM); Dick, Aaron J. (Oakland, CA); Cort, George E. (Montrose, CO)

    1998-01-01T23:59:59.000Z

    A rock melting penetrator is provided with an afterbody that rapidly cools a molten geological structure formed around the melting tip of the penetrator to the glass transition temperature for the surrounding molten glass-like material. An annealing afterbody then cools the glass slowly from the glass transition temperature through the annealing temperature range to form a solid self-supporting glass casing. This allows thermally induced strains to relax by viscous deformations as the molten glass cools and prevents fracturing of the resulting glass liner. The quality of the glass lining is improved, along with its ability to provide a rigid impermeable casing in unstable rock formations.

  5. Oilfield rock bits: Are they a commodity

    SciTech Connect (OSTI)

    Caldwell, R.

    1994-05-01T23:59:59.000Z

    This paper discusses the quality of various types of rock drill bits and evaluates cost of these bits against service and performance to determine if bits should be viewed as a commodity when drilling a production or exploration well. Continuing advancements in materials technology, machining capabilities, hydraulics arrangements, bearing configuration, seal technology and cutter design continue to push the performance curve for oilfield rock bits. However, some very important advancements are patented, proprietary features of individual manufacturers. This paper reviews some of these design and performance features to help determine if they are worth the extra investment based on actual field drilling experience.

  6. Specific energy for laser removal of rocks.

    SciTech Connect (OSTI)

    Xu, Z.; Kornecki, G.; Reed, C. B.; Gahan, B. C.; Parker, R. A.; Batarseh, S.; Graves, R. M.

    2001-08-16T23:59:59.000Z

    Application of advanced high power laser technology into oil and gas well drilling has been attracting significant research interests recently among research institutes, petroleum industries, and universities. Potential laser or laser-aided oil and gas well drilling has many advantages over the conventional rotary drilling, such as high penetration rate, reduction or elimination of tripping, casing, and bit costs, and enhanced well control, perforating and side-tracking capabilities. The energy required to remove a unit volume of rock, namely the specific energy (SE), is a critical rock property data that can be used to determine both the technical and economic feasibility of laser oil and gas well drilling.

  7. Metamorphic Rocks, Processes, and Resources Metamorphic rocks are rocks changed from one form to another by intense heat, intense pressure,

    E-Print Network [OSTI]

    Li, X. Rong

    important ­ Rising temperature causes water to be released from unstable minerals ­ Hot water very reactive refers to the temperature and pressure under which a rock was metamorphosed, considered low grade or high ­ If range exceeded, new mineral structures result ­ If temperature gets high enough, melting will occur

  8. Esimation of field-scale thermal conductivities of unsaturated rocks from in-situ temperature data

    E-Print Network [OSTI]

    Mukhopadhyay, Sumit; Tsang, Yvonne W.; Birkholzer, Jens T.

    2008-01-01T23:59:59.000Z

    vicinity of the heat source, and rock temperature exceededand the dry rock near the heat source. The other differencesources, heat transfer takes place through the wet rock (see

  9. Seismic and Acoustic Investigations of Rock Fall Initiation, Processes, and Mechanics

    E-Print Network [OSTI]

    Zimmer, Valerie Louise

    2011-01-01T23:59:59.000Z

    systems  and  rock  fall  source  and  impact  areas,  it  meters  from  a  rock  fall  source  area.   The   success  possible  to  the  rock  fall  source  areas,   spacing  

  10. GEOTECHNICAL ASSESSMENT AND INSTRUMENTATION NEEDS FOR NUCLEAR WASTE ISOLATION IN CRYSTALLINE AND ARGILLACEOUS ROCKS SYMPOSIUM

    E-Print Network [OSTI]

    Authors, Various

    2011-01-01T23:59:59.000Z

    INSTRUMENTATION NEEDS FOR DETERMINING ROCK PROPERTIES..Acknowledgements • ROCK PROPERTIES Participant Listing.OF MODELING IN ROCK PROPERTIES EVALUATION AND APPLICATION. •

  11. Parameter estimation from flowing fluid temperature logging data in unsaturated fractured rock using multiphase inverse modeling

    E-Print Network [OSTI]

    Mukhopadhyay, S.

    2009-01-01T23:59:59.000Z

    have assumed the same rock properties for the entire packed-earlier, among the rock properties (permeability, porosity,However, these are not rock properties and are constrained

  12. Coupled thermohydromechanical analysis of a heater test in unsaturated clay and fractured rock at Kamaishi Mine

    E-Print Network [OSTI]

    Rutqvist, J.

    2011-01-01T23:59:59.000Z

    Kamaishi mine. Laboratory rock property tests. Power reactor5.2 Near field rock properties and fiactire geometand hydraulic rock properties, and hydraulic conditions

  13. An Integrated Modeling Analysis of Unsaturated Flow Patterns in Fractured Rock

    E-Print Network [OSTI]

    Wu, Yu-Shu; Lu, Guoping; Zhang, Keni; Pan, Lehua; Bodvarsson, Gudmundur S.

    2008-01-01T23:59:59.000Z

    because large contrasts in rock properties exist across thetransitional changes in rock properties argues that lateralthe distribution of rock properties within different units.

  14. On the relationship between stress and elastic strain for porous and fractured rock

    E-Print Network [OSTI]

    Liu, Hui-Hai

    2009-01-01T23:59:59.000Z

    the other associated rock properties. Important examples ofand/or hydraulic rock properties. We show that theand other rock mechanical/hydraulic properties, and these

  15. SEARCH FOR UNDERGROUND OPENINGS FOR IN SITU TEST FACILITIES IN CRYSTALLINE ROCK

    E-Print Network [OSTI]

    Wallenberg, H.A.

    2010-01-01T23:59:59.000Z

    to complie and correlate rock properties and preliminaryProject Table 1. Rock properties and project characteristicsof Information Rock properties - Bad Creek area Exhibit 1.

  16. Hot-dry-rock geothermal resource 1980

    SciTech Connect (OSTI)

    Heiken, G.; Goff, F.; Cremer, G. (ed.)

    1982-04-01T23:59:59.000Z

    The work performed on hot dry rock (HDR) geothermal resource evaluation, site characterization, and geophysical exploration techniques is summarized. The work was done by region (Far West, Pacific Northwest, Southwest, Rocky Mountain States, Midcontinent, and Eastern) and limited to the conterminous US.

  17. Storage capacity in hot dry rock reservoirs

    DOE Patents [OSTI]

    Brown, Donald W. (Los Alamos, NM)

    1997-01-01T23:59:59.000Z

    A method of extracting thermal energy, in a cyclic manner, from geologic strata which may be termed hot dry rock. A reservoir comprised of hot fractured rock is established and water or other liquid is passed through the reservoir. The water is heated by the hot rock, recovered from the reservoir, cooled by extraction of heat by means of heat exchange apparatus on the surface, and then re-injected into the reservoir to be heated again. Water is added to the reservoir by means of an injection well and recovered from the reservoir by means of a production well. Water is continuously provided to the reservoir and continuously withdrawn from the reservoir at two different flow rates, a base rate and a peak rate. Increasing water flow from the base rate to the peak rate is accomplished by rapidly decreasing backpressure at the outlet of the production well in order to meet periodic needs for amounts of thermal energy greater than a baseload amount, such as to generate additional electric power to meet peak demands. The rate of flow of water provided to the hot dry rock reservoir is maintained at a value effective to prevent depletion of the liquid

  18. Storage capacity in hot dry rock reservoirs

    DOE Patents [OSTI]

    Brown, D.W.

    1997-11-11T23:59:59.000Z

    A method is described for extracting thermal energy, in a cyclic manner, from geologic strata which may be termed hot dry rock. A reservoir comprised of hot fractured rock is established and water or other liquid is passed through the reservoir. The water is heated by the hot rock, recovered from the reservoir, cooled by extraction of heat by means of heat exchange apparatus on the surface, and then re-injected into the reservoir to be heated again. Water is added to the reservoir by means of an injection well and recovered from the reservoir by means of a production well. Water is continuously provided to the reservoir and continuously withdrawn from the reservoir at two different flow rates, a base rate and a peak rate. Increasing water flow from the base rate to the peak rate is accomplished by rapidly decreasing backpressure at the outlet of the production well in order to meet periodic needs for amounts of thermal energy greater than a baseload amount, such as to generate additional electric power to meet peak demands. The rate of flow of water provided to the hot dry rock reservoir is maintained at a value effective to prevent depletion of the liquid inventory of the reservoir. 4 figs.

  19. Damage and plastic deformation of reservoir rocks

    E-Print Network [OSTI]

    Ze'ev, Reches

    Damage and plastic deformation of reservoir rocks: Part 2. Propagation of a hydraulic fracture Seth fracture and fault mechanics, fluid flow in fractured reservoirs, and geome- chanics in nonconventional the development of complex hydraulic fractures (HFs) that are commonly ob- served in the field and in experiments

  20. Transfer of hot dry rock technology

    SciTech Connect (OSTI)

    Smith, M.C.

    1985-11-01T23:59:59.000Z

    The Hot Dry Rock Geothermal Energy Development Program has focused worldwide attention on the facts that natural heat in the upper part of the earth's crust is an essentially inexhaustible energy resource which is accessible almost everywhere, and that practical means now exist to extract useful heat from the hot rock and bring it to the earth's surface for beneficial use. The Hot Dry Rock Program has successfully constructed and operated a prototype hot, dry rock energy system that produced heat at the temperatures and rates required for large-scale space heating and many other direct uses of heat. The Program is now in the final stages of constructing a larger, hotter system potentially capable of satisfying the energy requirements of a small, commercial, electrical-generating power plant. To create and understand the behavior of such system, it has been necessary to develop or support the development of a wide variety of equipment, instruments, techniques, and analyses. Much of this innovative technology has already been transferred to the private sector and to other research and development programs, and more is continuously being made available as its usefulness is demonstrated. This report describes some of these developments and indicates where this new technology is being used or can be useful to industry, engineering, and science.

  1. Radiocarbon dating of ancient rock paintings

    SciTech Connect (OSTI)

    Ilger, W.A.; Hyman, M.; Rowe, M.W. [Texas A and M Univ., College Station, TX (United States). Dept. of Chemistry; Southon, J. [Lawrence Livermore National Lab., CA (United States)

    1995-06-20T23:59:59.000Z

    This report presents progress made on a technique for {sup 14}C dating pictographs. A low-temperature oxygen plasma is used coupled with high-vacuum technologies to selectively remove C-containing material in the paints without contamination from inorganic carbon from rock substrates or accretions.

  2. Life cycle assessment of a rock crusher

    SciTech Connect (OSTI)

    Landfield, A.H.; Karra, V.

    1999-07-01T23:59:59.000Z

    Nordberg, Inc., a capital equipment manufacturer, performed a Life Cycle Assessment study on its rock crusher to aid in making decisions on product design and energy improvements. Life Cycle Assessment (LCA) is a relatively new cutting edge environmental tool recently standardized by ISO that provides quantitative environmental and energy data on products or processes. This paper commences with a brief introduction to LCA and presents the system boundaries, modeling and assumptions for the rock crusher study. System boundaries include all life major cycle stages except manufacturing and assembly of the crusher. Results of the LCA show that over 99% of most of the flows into and out of the system may be attributed to the use phase of the rock crusher. Within the use phase itself, over 95% of each environmental inflow and outflow (with some exceptions) are attributed to electricity consumption, and not the replacement of spares/wears or lubricating oil over the lifetime of the crusher. Results tables and charts present selected environmental flows, including CO{sub 2} NOx, SOx, particulate matter, and energy consumption, for each of the rock crusher life cycle stages and the use phase. This paper aims to demonstrate the benefits of adopting a rigorous scientific approach to assess energy and environmental impacts over the life cycle of capital equipment. Nordberg has used these results to enhance its engineering efforts toward developing an even more energy efficient machine to further progress its vision of providing economic solutions to its customers by reducing the crusher operating (mainly electricity) costs.

  3. Rock Classification in Organic Shale Based on Petrophysical and Elastic Rock Properties Calculated from Well Logs

    E-Print Network [OSTI]

    Aranibar Fernandez, Alvaro A

    2015-01-05T23:59:59.000Z

    classification method was then applied to the field examples from the Haynesville shale and Woodford shales for rock classification. The estimates of porosity, TOC, bulk modulus, shear modulus, and volumetric concentrations of minerals were obtained...

  4. Rock Bands/Rock Brands: Mediation and Musical Performance in Post-liberalization Bangalore

    E-Print Network [OSTI]

    Coventry, Chloe Louise

    2013-01-01T23:59:59.000Z

    2009 PolyGram advertisement Coca-cola and MTV contest PepsiNokia, Pepsi, Seagrams, and Coca Cola sponsored rock showsGroup and Brigade Group, Coca-Cola, and the biotechnology

  5. FACTORS IN THE DESIGN OF A ROCK MECHANICS CENTRIFUGE FOR STRONG ROCK

    E-Print Network [OSTI]

    Clark, George B

    1984-01-01T23:59:59.000Z

    1 . Capacit i es of known centrifuges and v proposed SoftSolla I rock mechanics centrifuge r, ---------1~ --- dxB. , (1980), Geotechnical centrifuges for model studies and

  6. Overview of conservation treatments applied to rock glyph archaeological sites

    E-Print Network [OSTI]

    Dandridge, Debra E

    2000-01-01T23:59:59.000Z

    Rock glyphs, ubiquitously referred to as rock art, are often the most highly visible components of archaeological sites. Such artifacts, therefore, are most prone to deterioration and degradation from human caused and natural elements...

  7. Study of Acid Response of Qatar Carbonate Rocks

    E-Print Network [OSTI]

    Wang, Zhaohong

    2012-02-14T23:59:59.000Z

    of understanding of Qatar carbonate especially Middle East carbonates and the abundance of Middle East carbonate reservoirs is the main motivation behind this study. This work is an experimental study to understand the acid response to Qatar rocks in rocks...

  8. Modeling of crack initiation, propagation and coalescence in rocks

    E-Print Network [OSTI]

    Gonçalves da Silva, Bruno Miguel

    2009-01-01T23:59:59.000Z

    Natural or artificial fracturing of rock plays a very important role in geologic processes and for engineered structures in and on rock. Fracturing is associated with crack initiation, propagation and coalescence, which ...

  9. Inversion of seismic attributes for petrophysical parameters and rock facies 

    E-Print Network [OSTI]

    Shahraeeni, Mohammad Sadegh

    2011-01-01T23:59:59.000Z

    Prediction of rock and fluid properties such as porosity, clay content, and water saturation is essential for exploration and development of hydrocarbon reservoirs. Rock and fluid property maps obtained from such predictions ...

  10. Idaho_WarEagle

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh School footballHydrogenIT |Hot Springs Site

  11. Isotopic Analysis- Rock At Valles Caldera - Sulphur Springs Geothermal...

    Open Energy Info (EERE)

    navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Isotopic Analysis- Rock At Valles Caldera - Sulphur Springs Geothermal Area (Phillips, 2004)...

  12. Isotopic Analysis- Rock At Valles Caldera - Sulphur Springs Geothermal...

    Open Energy Info (EERE)

    navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Isotopic Analysis- Rock At Valles Caldera - Sulphur Springs Geothermal Area (Ito & Tanaka, 1995)...

  13. Isotopic Analysis- Rock At Valles Caldera - Sulphur Springs Area...

    Open Energy Info (EERE)

    navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Isotopic Analysis- Rock At Valles Caldera - Sulphur Springs Area (Ito & Tanaka, 1995) Exploration...

  14. A CONSTITUTIVE MODEL TO PREDICT THE HYDROMECHANICAL BEHAVIOUR OF ROCK

    E-Print Network [OSTI]

    Aubertin, Michel

    in the presence of water to better assess the stability of rock structures under many situations. The accurate conditions. A rock mass behaviour can also be influenced by the water flow and ensuing pore pressure. For example, a previously stable rock structure can become unstable with an increase of water pressure inside

  15. Sigma Xi, The Scientific Research Society Rock Varnish

    E-Print Network [OSTI]

    Dorn, Ron

    Sigma Xi, The Scientific Research Society Rock Varnish Author(s): Ronald I. Dorn Source: American;Rock Varnish Over thousandsofyears,a thincoatingofclay,cementedtorocksbymanganese and iron that appeared "smooth, black, and as ifcoated with plumbago." Indian legends explained that these rocks had been

  16. Technical Note Evaluation of mechanical rock properties using a Schmidt

    E-Print Network [OSTI]

    Ze'ev, Reches

    Technical Note Evaluation of mechanical rock properties using a Schmidt Hammer O. Katza, b, c, *, Z, 91904, Israel b Geological Survey of Israel, 30 Malkhe Yisrael St., Jerusalem, 95501, Israel c Rock of concrete hardness [1], and was later used to estimate rock strength [2,3]. It con- sists of a spring

  17. A NEW MODEL FOR PERFORMANCE PREDICTION OF HARD ROCK TBMS.

    E-Print Network [OSTI]

    TBMs. The model uses information on the rock properties and cutting geometry to calculate TBM rate on data collected in the field and is merely a regression between machine parameters, rock properties is introduced to provide an estimate of disc cutting forces as a function of rock properties and the cutting

  18. Apollo Rock Reveals Moon Had Molten Core | Universe Additional Resources

    E-Print Network [OSTI]

    Weiss, Benjamin P.

    Apollo Rock Reveals Moon Had Molten Core | Universe Today Subscribe Podcast Home Additional Apollo Rock Reveals Moon Had Molten Core Written by Nancy Atkinson If you're new here, you may want to subscribe to my RSS feed. Thanks for visiting! Apollo Rock Reveals Moon Had Molten Core | Universe Today

  19. ROCK PROPERTIES AND THEIR EFFECT ON THERMALLY-INDUCED DISPLACEMENTS AND STRESSES

    E-Print Network [OSTI]

    Chan, T.

    2010-01-01T23:59:59.000Z

    of laboratory rock property measurements. ACKNOWLEDGEMENT10517 u>ve-'zz&\\--lo ROCK PROPERTIES AND THEIR EFFECT OHin values i for the rock properties for an 1n-s1tu rock mass

  20. GEOL 103 Writing Assignment 2. Rock Cycle 1. How do each of the three major rock types form? Include the source of the material and the rock-forming

    E-Print Network [OSTI]

    Kirby, Carl S.

    ? Include the source of the material and the rock-forming process. · Igneous rocks form from the hiGEOL 103 Writing Assignment 2. Rock Cycle 1. How do each of the three major rock types form-temperature (650-1200 °C) melting of other rocks (ign. mmorphic, or sed), following by cooling, possibly

  1. GEOTECHNICAL ASSESSMENT AND INSTRUMENTATION NEEDS FOR NUCLEAR WASTE ISOLATION IN CRYSTALLINE AND ARGILLACEOUS ROCKS SYMPOSIUM

    E-Print Network [OSTI]

    Authors, Various

    2011-01-01T23:59:59.000Z

    Characterization of Rock Masses Structural GeologicalCharacterization of Rock Masses . • • • • • • • • 5.2.1 Structural Geological

  2. Seismic and Acoustic Investigations of Rock Fall Initiation, Processes, and Mechanics

    E-Print Network [OSTI]

    Zimmer, Valerie Louise

    2011-01-01T23:59:59.000Z

    Happy  Isles  and  the  1999  Glacier  Point  rock  falls,  there   was   an   attempt   to   monitor   rock   fall   in   Yosemite   Valley  

  3. A Phased Array Approach to Rock Blasting

    SciTech Connect (OSTI)

    Leslie Gertsch; Jason Baird

    2006-07-01T23:59:59.000Z

    A series of laboratory-scale simultaneous two-hole shots was performed in a rock simulant (mortar) to record the shock wave interference patterns produced in the material. The purpose of the project as a whole was to evaluate the usefulness of phased array techniques of blast design, using new high-precision delay technology. Despite high-speed photography, however, we were unable to detect the passage of the shock waves through the samples to determine how well they matched the expected interaction geometry. The follow-up mine-scale tests were therefore not conducted. Nevertheless, pattern analysis of the vectors that would be formed by positive interference of the shockwaves from multiple charges in an ideal continuous, homogeneous, isotropic medium indicate the potential for powerful control of blast design, given precise characterization of the target rock mass.

  4. Low Pore Connectivity in Natural Rock

    SciTech Connect (OSTI)

    Hu, Qinhong; Ewing, Robert P.; Dultz, Stefan

    2012-05-15T23:59:59.000Z

    As repositories for CO? and radioactive waste, as oil and gas reservoirs, and as contaminated sites needing remediation, rock formations play a central role in energy and environmental management. The connectivity of the rock's porespace strongly affects fluid flow and solute transport. This work examines pore connectivity and its implications for fluid flow and chemical transport. Three experimental approaches (imbibition, tracer concentration profiles, and imaging) were used in combination with network modeling. In the imbibition results, three types of imbibition slope [log (cumulative imbibition) vs. log (imbibition time)] were found: the classical 0.5, plus 0.26, and 0.26 transitioning to 0.5. The imbibition slope of 0.26 seen in Indiana sandstone, metagraywacke, and Barnett shale indicates low pore connectivity, in contrast to the slope of 0.5 seen in the well-connected Berea sandstone. In the tracer profile work, rocks exhibited different distances to the plateau porosity, consistent with the pore connectivity from the imbibition tests. Injection of a molten metal into connected pore spaces, followed by 2-D imaging of the solidified alloy in polished thin sections, allowed direct assessment of pore structure and lateral connection in the rock samples. Pore-scale network modeling gave results consistent with measurements, confirming pore connectivity as the underlying cause of both anomalous behaviors: imbibition slope not having the classical value of 0.5, and accessible porosity being a function of distance from the edge. A poorly connected porespace will exhibit anomalous behavior in fluid flow and chemical transport, such as a lower imbibition slope (in air–water system) and diffusion rate than expected from classical behavior.

  5. Rock Chalk Report, May 7, 2014

    E-Print Network [OSTI]

    2014-05-07T23:59:59.000Z

    Trouble seeing something? view it online or To unsubscribe, click here or send an email to: unsubscribe- 87@pacmail.em.marketinghq.net. May 7, 2014 Rock Chalk Report The Official Newsletter of Kansas Athletics... an email to: unsubscribe-87@pacmail.em.marketinghq.net. © 2014, University of Kansas. The team names, logos and uniform designs are registered trademarks of the teams indicated. No logos, photographs or graphics in this email may be reproduced without...

  6. Hot Dry Rock Geothermal Energy Development Program

    SciTech Connect (OSTI)

    Smith, M.C.; Hendron, R.H.; Murphy, H.D.; Wilson, M.G.

    1989-12-01T23:59:59.000Z

    During Fiscal Year 1987, emphasis in the Hot Dry Rock Geothermal Energy Development Program was on preparations for a Long-Term Flow Test'' of the Phase II'' or Engineering'' hot dry rock energy system at Fenton Hill, New Mexico. A successful 30-day flow test of the system during FY86 indicated that such a system would produce heat at a temperature and rate that could support operation of a commercial electrical power plant. However, it did not answer certain questions basic to the economics of long-term operation, including the rate of depletion of the thermal reservoir, the rate of water loss from the system, and the possibility of operating problems during extended continuous operation. Preparations for a one-year flow test of the system to answer these and more fundamental questions concerning hot dry rock systems were made in FY87: design of the required surface facilities; procurement and installation of some of their components; development and testing of slimline logging tools for use through small-diameter production tubing; research on temperature-sensitive reactive chemical tracers to monitor thermal depletion of the reservoir; and computer simulations of the 30-day test, extended to modeling the planned Long-Term Flow Test. 45 refs., 34 figs., 5 tabs.

  7. Gage for measuring displacements in rock samples

    DOE Patents [OSTI]

    Holcomb, D.J.; McNamee, M.J.

    1985-07-18T23:59:59.000Z

    A gage for measuring diametral displacement within a rock sample for use in a rock mechanics laboratory and in the field, comprises a support ring housing a linear variable differential transformer (LVDT), a mounting screw, and a leaf spring. The mounting screw is adjustable and defines a first point of contact with the rock sample. The leaf spring has opposite ends fixed to the inner periphery of the mounting ring. An intermediate portion of the leaf spring projecting radially inward from the ring is formed with a dimple defining a second point of contact with the sample. The first and second points of contact are diametrically opposed to each other. The LVDT is mounted in the ring with its axis parallel to the line of measurement and its core rod received in the dimple of the leaf spring. Any change in the length of the line between the first and second support points is directly communicated to the LVDT. The leaf spring is rigid to completely support lateral forces so that the LVDT is free of all load for improved precision.

  8. Squirt flow in fully saturated rocks

    SciTech Connect (OSTI)

    Dvorkin, J.; Mavko, G.; Nur, A. [Stanford Univ., CA (United States). Dept. of Geophysics] [Stanford Univ., CA (United States). Dept. of Geophysics

    1995-01-01T23:59:59.000Z

    The authors estimate velocity/frequency dispersion and attenuation in fully saturated rocks by employing the squirt-flow mechanism of solid-fluid interaction. In this model, pore fluid is squeezed from thin soft cracks into the surrounding large pores. Information about the compliance of these soft cracks at low confining pressures is extracted from high-pressure velocity data. The frequency dependence of squirt-induced pressure in the soft cracks is linked with the porosity and permeability of the soft pore space, and the characteristic squirt-flow length. These unknown parameters are combined into one expression that is assumed to be a fundamental rock property that does not depend on frequency. The appropriate value of this expression for a given rock can be found by matching the authors theoretical predictions with the experimental measurements of attenuation or velocity. The low-frequency velocity limits, as given by their model, are identical to those predicted by Gassmann`s formula. The high-frequency limits may significant exceed those given by the Biot theory: the high-frequency frame bulk modulus is close to that measured at high confining pressure. They have applied their model to D`Euville Limestone, Navajo Sandstone, and Westerly Granite. The model realistically predicts the observed velocity/frequency dispersion, and attenuation.

  9. Merguerian, Charles; and Ozdemir, Levent, 2003, Rock Mass Properties and Hard Rock TBM Penetration Rate Investigations, Queens Tunnel Complex, NYC Water Tunnel #3, Stage 2: p.

    E-Print Network [OSTI]

    Merguerian, Charles

    Merguerian, Charles; and Ozdemir, Levent, 2003, Rock Mass Properties and Hard Rock TBM Penetration Properties and Hard Rock TBM Penetration Rate Investigations, Queens Tunnel Complex, NYC Water Tunnel #3 quantification that the rock mass exhibited an unusually high degree of toughness and rock directional properties

  10. Source rock evaluation, oil-source rock correlation, and kinetic modeling - San Juan Sag, CO

    SciTech Connect (OSTI)

    Clayton, J.L. (Geological survey, Denver, CO (USA)); Gries, R.R.

    1990-05-01T23:59:59.000Z

    Recently, oil and gas shows have been reported in Cretaceous and Tertiary rocks of the San Juan sag, and minor oil production was established from volcanic rocks (Kirby Petroleum 1 Jynnifer well, Sec. 9, T40N, R5E.). Potential source rocks present in the San Juan sag are the upper and lower (including the Niobrara Member) Mancos Shale (Upper Cretaceous). The combined upper and lower Mancos Shale is about 666 m thick and contains between about 0.5 and 5.5% organic carbon, although most values are between about 1.5 and 2.0%. The Niobrara Member of the lower Mancos Shale has the highest overall organic matter content in the section (organic carbon averages <2.0%). Pyrolysis and solvent extraction data (typically 2,000-6,000 and 1,000-4,000 ppm, respectively) indicate that the upper and lower Mancos Shale and the Niobrara Member are all good potential source rocks for oil and gas. Oil-source rock correlations using gas chromatography, mass spectrometry, and stable carbon isotope ratios indicate that the upper Mancos Shale is the most likely source for the oil produced from the 1 Jynnifer discovery well. The source of the oil produced from the nearby Gramps field is less certain, but may be the lower Mancos Shale or Niobrara Member. The hydrocarbon generation history of the San Juan sag is complex because of highly variable heat flow in the area caused by Oligocene volcanism. Sills have caused thermal alteration of organic matter in shales on a local scale, and larger volcanic bodies may have produced proportionality larger thermal effects. More regional heating by larger volcanic bodies is an important factor in the oil generation history of the area. The authors have constructed kinetic models at several locations in the area to estimate the timing and amount of hydrocarbon products generated from the source rocks. The main phase of oil and gas generation and expulsion occurred during the Oligocene.

  11. Hot dry rock venture risks investigation:

    SciTech Connect (OSTI)

    Not Available

    1988-01-01T23:59:59.000Z

    This study assesses a promising resource in central Utah as the potential site of a future commerical hot dry rock (HDR) facility for generating electricity. The results indicate that, if the HDR reservoir productivity equals expectations based on preliminary results from research projects to date, a 50 MWe HDR power facility at Roosevelt Hot Springs could generate power at cost competitive with coal-fired plants. However, it is imperative that the assumed productivity be demonstrated before funds are committed for a commercial facility. 72 refs., 39 figs., 38 tabs.

  12. Adsorption of water vapor on reservoir rocks

    SciTech Connect (OSTI)

    Not Available

    1993-07-01T23:59:59.000Z

    Progress is reported on: adsorption of water vapor on reservoir rocks; theoretical investigation of adsorption; estimation of adsorption parameters from transient experiments; transient adsorption experiment -- salinity and noncondensible gas effects; the physics of injection of water into, transport and storage of fluids within, and production of vapor from geothermal reservoirs; injection optimization at the Geysers Geothermal Field; a model to test multiwell data interpretation for heterogeneous reservoirs; earth tide effects on downhole pressure measurements; and a finite-difference model for free surface gravity drainage well test analysis.

  13. Rock Energy Cooperative | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualProperty Edit with form HistoryRistma AG Jump to: navigation, searchRochester Gas &JumpRock

  14. Rim Rock Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:Ezfeedflag JumpID-f < RAPID‎ | RoadmapRenewableGeothermalsourceOhio:RigbyRim Rock Wind

  15. ArchRock Corporation | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:Ezfeedflag JumpID-fTriWildcatAntrim County,Delhi (NCT),Arborview CapitalArchRock Corporation

  16. DOE - Office of Legacy Management -- Slick Rock

    Office of Legacy Management (LM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn AprilA group currentBradleyTableSelling Corp -K Le BlondSantaWyomingSlick Rock Slick

  17. Rock Lab Analysis | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere IRaghuraji Agro Industries Pvt Ltd Jump to: navigation,MazeOhio:Ohio: Energy ResourcesRock Lab Analysis Jump

  18. Rock, Wisconsin: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere IRaghuraji Agro Industries Pvt Ltd Jump to: navigation,MazeOhio:Ohio: Energy Jump to: navigation, searchRock,

  19. Sensitivity analysis of GSI based mechanical characterization of rock mass

    E-Print Network [OSTI]

    Ván, P

    2012-01-01T23:59:59.000Z

    Recently, the rock mechanical and rock engineering designs and calculations are frequently based on Geological Strength Index (GSI) method, because it is the only system that provides a complete set of mechanical properties for design purpose. Both the failure criteria and the deformation moduli of the rock mass can be calculated with GSI based equations, which consists of the disturbance factor, as well. The aim of this paper is the sensitivity analysis of GSI and disturbance factor dependent equations that characterize the mechanical properties of rock masses. The survey of the GSI system is not our purpose. The results show that the rock mass strength calculated by the Hoek-Brown failure criteria and both the Hoek-Diederichs and modified Hoek-Diederichs deformation moduli are highly sensitive to changes of both the GSI and the D factor, hence their exact determination is important for the rock engineering design.

  20. United States National Waste Terminal Storage argillaceous rock studies

    SciTech Connect (OSTI)

    Brunton, G.D.

    1981-01-01T23:59:59.000Z

    The past and present argillaceous rock studies for the US National Waste Terminal Storage Program consist of: (1) evaluation of the geological characteristics of several widespread argillaceous formations in the United States; (2) laboratory studies of the physical and chemical properties of selected argillaceous rock samples; and (3) two full-scale in situ surface heater experiments that simulate the emplacement of heat-generating radioactive waste in argillaceous rock.

  1. Velocity and attenuation in partially molten rocks

    SciTech Connect (OSTI)

    Mavko, G.M.

    1980-10-10T23:59:59.000Z

    Interpretation of seismic velocity and attenuation in partially molten rocks has been limited, with few exceptions, to models that assume the melt to be distributed either as spheres or as thin films. However, other melt phase geometries, such as interconnected tubes along grain edges, might equally well account for seismic observations if there is a much larger fraction of melt. Seismic velocity and attenuation are estimated in rocks in which the melt phase has the tube geometry, and the results are compared with results expected for the more familiar film model under similar conditions. For a given melt fraction, tubes are found to give moduli intermediate between moduli for rigid spherical inclusions and compliant films. For example, in polycrystalline olivine at 20 kbar the model predicts a decrease in V/sub s/ of 10% and a decrease in V/sub p/ of 5% at 0.05 melt fraction, without considering inelastic relaxation. Shear attenuation appears to be dominated by viscous flow of melt between the tubes and/or films. For olivine the tube model predicts the increment of relaxation due to melt, ..delta mu../..mu.., to be 0.01 at 0.05 melt fraction. Relaxation of the bulk modulus is dominated by flow between melt pockets of different shape, heat flow, and solid-melt phase change. If melt is present, considerable bulk attenuation is expected, although the relaxation may be observable only at long periods, outside the seismic body wave band.

  2. The US Hot Dry Rock project

    SciTech Connect (OSTI)

    Hendron, R.H.

    1987-01-01T23:59:59.000Z

    The Hot Dry Rock geothermal energy project began in the early 1970's with the objective of developing a technology to make economically available the large ubiquitous thermal energy of the upper earth crust. The program has been funded by the Department of Energy (and its predecessors) and for a few years with participation by West Germany and Japan. An energy reservoir was accessed by drilling and hydraulically fracturing in the precambrian basement rock outside the Valles Caldera of north-central New Mexico. Water was circulated through the reservoir (Phase I, 1978-1980) producing up to 5 MWt at 132/sup 0/C. A second (Phase II) reservoir has been established with a deeper pair of holes and an initial flow test completed producing about 10 MWt at 190/sup 0/C. These accomplishments have been supported and paralleled by developments in drilling, well completion and instrumentation hardware. Acoustic or microseismic fracture mapping and geochemistry studies in addition to hydraulic and thermal data contribute to reservoir analyses. Studies of some of the estimated 430,000 quads of HDR resources in the United States have been made with special attention focused on sites most advantageous for early development.

  3. archaean sedimentary rocks: Topics by E-print Network

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

    situations, much more dependent on the properties of joints Aubertin, Michel 302 Rock Mining Operation Effects on Water Quality in the Everglades Biology and Medicine Websites...

  4. artificial rock fractures: Topics by E-print Network

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

    drainage. ISRM 2003Technology roadmap for rock mechanics, South African Institute of Mining and Metallurgy, 2 Environmental Sciences and Ecology Websites Summary: subsidence...

  5. archean supracrustal rocks: Topics by E-print Network

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

    interesting than whales's research interests include sustainable transportation, life-cycle assessment, and the national security Zhang, Junshan 164 ELASTIC ROCK PROPERTIES OF...

  6. archean metavolcanic rocks: Topics by E-print Network

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

    interesting than whales's research interests include sustainable transportation, life-cycle assessment, and the national security Zhang, Junshan 156 ELASTIC ROCK PROPERTIES OF...

  7. acid rock discharges: Topics by E-print Network

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

    interesting than whales's research interests include sustainable transportation, life-cycle assessment, and the national security Zhang, Junshan 226 ELASTIC ROCK PROPERTIES OF...

  8. alkalic rock: Topics by E-print Network

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

    interesting than whales's research interests include sustainable transportation, life-cycle assessment, and the national security Zhang, Junshan 120 ELASTIC ROCK PROPERTIES OF...

  9. Elastic properties of saturated porous rocks with aligned fractures

    E-Print Network [OSTI]

    2003-12-02T23:59:59.000Z

    This unexpected result is caused by the wave-induced flow of fluids between pores and fractures. ..... For non-fractured rock setting fracture weaknesses. DN and ...

  10. average sedimentary rock: Topics by E-print Network

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

    challenge of interpreting environmental tracer concentrations in fractured rock and carbonate aquifers Multidisciplinary Databases and Resources Websites Summary: are reported to...

  11. alum rock sulfur: Topics by E-print Network

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

    -resolution carbon and sulfur isotope profiles from Early to Middle Ordovician carbonate rocks from the Argentine Investigation of isotopic compositions recorded in...

  12. altered sedimentary rocks: Topics by E-print Network

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

    challenge of interpreting environmental tracer concentrations in fractured rock and carbonate aquifers Multidisciplinary Databases and Resources Websites Summary: are reported to...

  13. Poroelastic damage rheology: Dilation, compaction, and failure of rocks

    E-Print Network [OSTI]

    Lyakhovsky, Vladimir

    Poroelastic damage rheology: Dilation, compaction, and failure of rocks Yariv Hamiel Institute December 2004; Published 26 January 2005. Hamiel, Y., V. Lyakhovsky, and A. Agnon (2005), Poroelastic

  14. Reservoir Investigations on the Hot Dry Rock Geothermal System...

    Open Energy Info (EERE)

    Mexico- Tracer Test Results Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference Paper: Reservoir Investigations on the Hot Dry Rock Geothermal System,...

  15. Rock Sampling At San Francisco Volcanic Field Area (Warpinski...

    Open Energy Info (EERE)

    Field Area Exploration Technique Rock Sampling Activity Date Usefulness not indicated DOE-funding Unknown Notes Northern Arizona University has re-assessed the existing exploration...

  16. AltaRock Energy Announces Successful Multiple-Zone Stimulation...

    Office of Environmental Management (EM)

    Announces Successful Multiple-Zone Stimulation of Well at the Newberry Enhanced Geothermal Systems Demonstration AltaRock Energy Announces Successful Multiple-Zone Stimulation...

  17. Lithology and Alteration Mineralogy of Reservoir Rocks at Coso...

    Open Energy Info (EERE)

    of the upwelling plume were investigated using petrographic and analytical analyses of reservoir rock and vein material. The nature of the low-angle outflow zone and the...

  18. Lithology and alteration mineralogy of reservoir rocks at Coso...

    Open Energy Info (EERE)

    of the upwelling plume were investigated using petrographic and analytical analyses of reservoir rock and vein material. The nature of the low-angle outflow zone and the...

  19. Carbonation Mechanism of Reservoir Rock by Supercritical Carbon...

    Open Energy Info (EERE)

    Task 3: Mechanical behaviors of carbonated minerals. - Task 4: Modeling of CO2- reservoir rock interactions. - Task 5: Preparation of report covering the four tasks previous task,...

  20. User`s guide to EAGLES Version 1.1: An electric- and gasoline-vehicle fuel-efficiency software package

    SciTech Connect (OSTI)

    Marr, W.W.

    1995-01-01T23:59:59.000Z

    EAGLES is an interactive microcomputer software package for the analysis of fuel efficiency in electric-vehicle (EV) applications or the estimation of fuel economy for a gasoline vehicle. The principal objective of the EV analysis is to enable the prediction of EV performance on the basis of laboratory test data for batteries. The EV model included in the software package provides a second-by-second simulation of battery voltage and current for any specified vehicle velocity/time or power/time profile. The capability of the battery is modeled by an algorithm that relates the battery voltage to the withdrawn (or charged) current, taking into account the effect of battery depth-of-discharge. Alternatively, the software package can be used to determine the size of the battery needed to satisfy given vehicle mission requirements. For gasoline vehicles, a generic fuel-economy model based on data from EPA Test Car List 1991 is included in the software package. For both types of vehicles, effects of heating/cooling loads on vehicle performance, including range penalty for EVs, can be studied. Also available is an option to estimate the time needed by a specified vehicle to reach a certain speed with the application of a constant power and an option to compute the fraction of time and/or distance in a driving cycle at speeds exceeding a specified value. Certain parameters can be changed interactively prior to a run.

  1. PTYS 109 LAB EXPLORATION AND DISCOVERY IN PLANETARY SCIENCE ROCKS AND MINERALS 133

    E-Print Network [OSTI]

    Cohen, Barbara Anne

    PTYS 109 LAB EXPLORATION AND DISCOVERY IN PLANETARY SCIENCE ROCKS AND MINERALS 133 Rocks and Minerals I. OBJECTIVES One of the many ways to study Earth is by examining the rocks that make up its types of rocks and minerals; · determine the formation and the history of each rock and mineral; · infer

  2. SEISMIC AND ROCK PHYSICS DIAGNOSTICS OF MULTISCALE RESERVOIR TEXTURES

    SciTech Connect (OSTI)

    Gary Mavko

    2003-06-30T23:59:59.000Z

    As part of our study on ''Relationships between seismic properties and rock microstructure'', we have studied (1) Effects of pore texture on porosity, permeability, and sonic velocity. We show how a relation can be found between porosity, permeability, and velocity by separating the formations of rocks with similar pore textures.

  3. Fluid Migration During Ice/Rock Planetesimal Differentiation

    E-Print Network [OSTI]

    Raney, Robert 1987-

    2012-12-12T23:59:59.000Z

    /water reaction, which will depend on the rate at which water can be segregated from a melting ice/rock core. For the liquid water phase to migrate toward the surface, the denser rock phase must compact. The primary question that this thesis will answer is how...

  4. Geophysical detection and structural characterization of discontinuities in rock

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Geophysical detection and structural characterization of discontinuities in rock slopes (J. Deparis geophysical methods (seismic, electric and electromagnetic) are available to address this problem, differing and geophysical methods for characterizing the rock mass. Section 2 is dedicated to a review of the main

  5. RUPTURE BY DAMAGE ACCUMULATION IN ROCKS David Amitrano

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    RUPTURE BY DAMAGE ACCUMULATION IN ROCKS David Amitrano LIRIGM, Université J. Fourier, Grenoble of rocks is associated with microcracks nucleation and propagation, i.e. damage. The accumulation of damage as strength and modulus. The damage process can be studied both statically by direct observation of thin

  6. ROCK: A Robust Clustering Algorithm for Categorical Attributes

    E-Print Network [OSTI]

    Pennsylvania, University of

    ROCK: A Robust Clustering Algorithm for Categorical Attributes Sudipto Guha Stanford University/proximity between a pair of data points. We develop a robust hierarchical clustering algorithm ROCK that employs measures that are relevant in situations where a domain expert/similarity table is the only source

  7. Carbonation Mechanism of Reservoir Rock by Supercritical Carbon Dioxide

    Broader source: Energy.gov [DOE]

    Project Objectives: Elucidate comprehensively the carbonation reaction mechanisms between supercritical carbon dioxide (scCO2) and reservoir rocks consisting of different mineralogical compositions in aqueous and non-aqueous environments at temperatures of up to 250ºC, and to develop chemical modeling of CO2-reservior rock interactions.

  8. Rock to Regolith Earth's Critical Zone on Volcanic Ocean Islands

    E-Print Network [OSTI]

    Geist, Dennis

    increases monotonically towards surface #12;Frost creep transport Frequency and depth of freezing event (f in a landscape? (the w question) What governs the efficiency of regolith transport? (the Q question) What lens growth #12;Ice lenses in soils Ice lenses in rock Water freezing in soil and rocks Murton et al

  9. ELASTIC ROCK PROPERTIES OF TIGHT GAS SANDSTONES FOR RESERVOIR CHARACTERIZATION

    E-Print Network [OSTI]

    to successfully produce low permeability gas reservoirs. My study links rock physics to well log and seismic data shales to reservoir sandstones. Typically, the presence of gas-saturated sandstones lowers the Vp/Vs evenELASTIC ROCK PROPERTIES OF TIGHT GAS SANDSTONES FOR RESERVOIR CHARACTERIZATION AT RULISON FIELD

  10. Investigations of Near-Field Thermal-Hydrologic-Mechanical-Chemical Models for Radioactive Waste Disposal in Clay/Shale Rock

    E-Print Network [OSTI]

    Liu, H.H.

    2012-01-01T23:59:59.000Z

    hydraulic rock properties 25  a variety of rock properties and their relationships to flowmechanical and/or hydraulic rock properties. The theoretical

  11. A comparative simulation study of coupled THM processes and their effect on fractured rock permeability around nuclear waste repositories

    E-Print Network [OSTI]

    Rutqvist, Jonny

    2008-01-01T23:59:59.000Z

    European countries. The initial rock properties for the twoinduced changes in rock properties. The purpose of the model3. Some basic THM rock properties Parameter Bulk Density, [

  12. RADIOACTIVE WASTE STORAGE IN MINED CAVERNS IN CRYSTALLINE ROCK-RESULTS OF FIELD INVESTIGATIONS AT STRIPA, SWEDEN

    E-Print Network [OSTI]

    Witherspoon, P.A.

    2010-01-01T23:59:59.000Z

    and M. Board. 1980. "Rock Properties and Their Effect onerature dependence of rock properties has been taken intomeasurements of the rock properties we need to understand

  13. Characterization of Spatial Variability of Hydrogeologic Properties for Unsaturated Flow in the Fractured Rocks at Yucca Mountain, Nevada

    E-Print Network [OSTI]

    Zhou, Quanlin; Bodvarsson, Gudmundur S.; Liu, Hui-Hai; Oldenburg, Curtis M.

    2002-01-01T23:59:59.000Z

    variables and prior rock properties are obtained from theircalibration of rock properties. Zhou et al, CharacterizationLateral variability of rock properties can be seen from the

  14. 1.4 PETROPHYSICS: Combined Rock and Fluid Character Integration of geological and petrophysical data allows development of a rock-fluid model for

    E-Print Network [OSTI]

    Schechter, David S.

    data allows development of a rock-fluid model for upper Spraberry rocks. This study identifies the different rock types that comprise the subject reservoirs, marginal reservoirs and non-reservoir rocks shales, clay rich siltstones and very fine sandstones units uses gamma-ray logs (Fig.1.2-1) and is widely

  15. Estimation of hydrologic properties of an unsaturated, fractured rock mass

    SciTech Connect (OSTI)

    Klavetter, E.A.; Peters, R.R.

    1986-07-01T23:59:59.000Z

    In this document, two distinctly different approaches are used to develop continuum models to evaluate water movement in a fractured rock mass. Both models provide methods for estimating rock-mass hydrologic properties. Comparisons made over a range of different tuff properties show good qualitative and quantitative agreement between estimates of rock-mass hydrologic properties made by the two models. This document presents a general discussion of: (1) the hydrology of Yucca Mountain, and the conceptual hydrological model currently being used for the Yucca Mountain site, (2) the development of two models that may be used to estimate the hydrologic properties of a fractured, porous rock mass, and (3) a comparison of the hydrologic properties estimated by these two models. Although the models were developed in response to hydrologic characterization requirements at Yucca Mountain, they can be applied to water movement in any fractured rock mass that satisfies the given assumptions.

  16. Evidence for the incorporation of lead into barite from waste rock pile materials

    E-Print Network [OSTI]

    COURTIN-NOMADE, ALEXANDRA

    2009-01-01T23:59:59.000Z

    into Barite from Waste Rock Pile Materials A L E X A N D R Awithin the waste rock pile resulting from the excavationdeveloped within waste rock pile originated from a former

  17. Full waveform inversion of a 3-D source inside an artificial rock

    E-Print Network [OSTI]

    To, A C; Glaser, Steven D

    2005-01-01T23:59:59.000Z

    of a 3-D Source Inside an Artificial Rock Albert C. To andof a 3-D source inside an artificial rock plate inof a 3-D source inside an artificial rock plate is

  18. Coupled hydro-mechanical processes in crytalline rock and in induratedand plastic clays: A comparative discussion

    E-Print Network [OSTI]

    Tsang, Chin-Fu; Blumling, Peter; Bernier, Frederic

    2008-01-01T23:59:59.000Z

    of heterogeneity in rock property (clay content and henceNon-linear) elastic properties of the rock. Biot coefficientNon-linear) elastic properties of the rock including their

  19. Evaluation of Five Sedimentary Rocks Other Than Salt for Geologic Repository Siting Purposes

    SciTech Connect (OSTI)

    Croff, A.G.; Lomenick, T.F.; Lowrie, R.S.; Stow, S.H.

    2003-11-15T23:59:59.000Z

    The US Department of Energy (DOE), in order to increase the diversity of rock types under consideration by the geologic disposal program, initiated the Sedimary ROck Program (SERP), whose immediate objectiv eis to evaluate five types of secimdnary rock - sandstone, chalk, carbonate rocks (limestone and dolostone), anhydrock, and shale - to determine the potential for siting a geologic repository. The evaluation of these five rock types, together with the ongoing salt studies, effectively results in the consideration of all types of relatively impermeable sedimentary rock for repository purposes. The results of this evaluation are expressed in terms of a ranking of the five rock types with respect to their potential to serve as a geologic repository host rock. This comparative evaluation was conducted on a non-site-specific basis, by use of generic information together with rock evaluation criteria (RECs) derived from the DOE siting guidelines for geologic repositories (CFR 1984). An information base relevant to rock evaluation using these RECs was developed in hydrology, geochemistry, rock characteristics (rock occurrences, thermal response, rock mechanics), natural resources, and rock dissolution. Evaluation against postclosure and preclosure RECs yielded a ranking of the five subject rocks with respect to their potential as repository host rocks. Shale was determined to be the most preferred of the five rock types, with sandstone a distant second, the carbonate rocks and anhydrock a more distant third, and chalk a relatively close fourth.

  20. America's Atomic Army: The Historical Archaeology of Camp Desert Rock

    SciTech Connect (OSTI)

    Susan R. Edwards

    2007-11-02T23:59:59.000Z

    Established in 1951, Camp Desert Rock served as the training ground for America's 'Atomic Army'. For the next six years, U.S. ground troops traveled to the Nevada desert to participate in military maneuvers during atmospheric atomic weapons testing. Nearly 60,000 soldiers received physical and psychological training in atomic warfare. Abandoned when atmospheric testing ended, Camp Desert Rock was dismantled and its buildings moved to other locations. Today, the camp appears as a sterile expanse of desert marked by rock-lined tent platforms, concrete foundations, and trash scatters. Although visually unimposing, the site is rich with the history of America's nuclear testing program.

  1. Response of Red-Tailed Hawks and Golden Eagles to Topographical Features, Weather, and Abundance of a Dominant Prey Species at the Altamont Pass Wind Resource Area, California: April 1999-December 2000

    SciTech Connect (OSTI)

    Hoover, S.

    2002-06-01T23:59:59.000Z

    Studies have shown that raptors flying within the Altamont Pass WRA are vulnerable to fatal turbine collisions, possibly because of their specific foraging and flight behavior. Between June 1999 and June 2000, I conducted 346.5 hours of raptor observations within the Atlamont Pass WRA. Behavior was recorded in relation to characteristics of the topography (slope aspect, elevation, and inclination), the weather, and ground squirrel abundance, as determined by active burrow entrances. The most significant finding of this study revealed that red-tailed hawks and golden eagles flew more in strong winds than in weak winds, particularly along hillsides facing into prevailing winds (as opposed to hillsides shielded from the wind). This is likely a result of the birds' use of declivity currents for lift during flights. These results suggest that certain combinations of topography and weather produce wind currents that are sought out by foraging red-tailed hawks and golden eagles within the Altamont Pass WRA. To decrease raptor mortality, mitigation measures can be targeted to specific areas likely to attract foraging raptors because of their capacity to create particularly favorable wind currents.

  2. The Effect of Heterogeneity on Matrix Acidizing of Carbonate Rocks

    E-Print Network [OSTI]

    Keys, Ryan S.

    2010-07-14T23:59:59.000Z

    pressure. A hydrochloric acid solution is used in carbonate reservoirs, which actually dissolves the calcite rock matrix in the form of conductive channels called wormholes. These wormholes propagate from the wellbore out into the reservoir, bypassing...

  3. Characterizing Flow in Oil Reservoir Rock Using Smooth Particle Hydrodynamics

    E-Print Network [OSTI]

    Holmes, David W.

    In this paper, a 3D Smooth Particle Hydrodynamics (SPH) simulator for modeling grain scale fluid flow in porous rock is presented. The versatility of the SPH method has driven its use in increasingly complex areas of flow ...

  4. Experimental Study on Rock Deformation and Permeability Variation

    E-Print Network [OSTI]

    Ding, Jihui

    2013-08-01T23:59:59.000Z

    The development of a petroleum reservoir would inevitably induce a rearrangement of the in-situ stress field. The rearrangement of the stress field would then bring about a deformation of the reservoir rock and a change of the permeability...

  5. A Study of Hydraulic Fracturing Initiation in Transversely Isotropic Rocks

    E-Print Network [OSTI]

    Serajian, Vahid

    2011-10-21T23:59:59.000Z

    fractures and also can be used to develop information about in-situ rock properties using failure pressure values observed in the field. Finally, mechanical and permeability anisotropy are measured using Pulse Permeameter and triaxial tests on Pierre shale....

  6. Modeling of Seismic Signatures of Carbonate Rock Types 

    E-Print Network [OSTI]

    Jan, Badr H.

    2011-02-22T23:59:59.000Z

    Carbonate reservoirs of different rock types have wide ranges of porosity and permeability, creating zones with different reservoir quality and flow properties. This research addresses how seismic technology can be used ...

  7. The Effect of Heterogeneity on Matrix Acidizing of Carbonate Rocks 

    E-Print Network [OSTI]

    Keys, Ryan S.

    2010-07-14T23:59:59.000Z

    In matrix acidizing, the goal is to dissolve minerals in the rock to increase well productivity. This is accomplished by injecting an application-specific solution of acid into the formation at a pressure between the pore ...

  8. SEISMIC AND ROCK PHYSICS DIAGNOSTICS OF MULTISCALE RESERVOIR TEXTURES

    SciTech Connect (OSTI)

    Gary Mavko

    2003-06-01T23:59:59.000Z

    As part of our study on ''Relationships between seismic properties and rock microstructure'', we have studied (1) Elastic properties of clay minerals using Pulse Transmission experiments. We show measurements of elastic moduli and strain in clay minerals.

  9. ROCK MASS CHARACTERIZATION FOR STORAGE OF NUCLEAR WASTE IN GRANITE

    E-Print Network [OSTI]

    Witherspoon, P.A.

    2010-01-01T23:59:59.000Z

    of an in-situ jointed granite. Intl. J. Rock Mech. and Min.of Groundwaters in the Stripa Granite: Results and Pre­of water through Westerly Granite at temperatures of 100 -

  10. Geochemical Data on Waters, Gases, Scales, and Rocks from the...

    Open Energy Info (EERE)

    Jump to: navigation, search OpenEI Reference LibraryAdd to library Report: Geochemical Data on Waters, Gases, Scales, and Rocks from the Dixie Valley Region, Nevada (1996-1999)...

  11. Drilling Complete on Australian Hot Dry Rock Project

    Broader source: Energy.gov [DOE]

    The first commercial attempt to create a commercial geothermal power plant using hot dry rock technology reached a crucial milestone on January 22, when a production well successfully reached its target depth.

  12. FREE ROCKING OF PRISMATIC BLOCKS By P. R. Lipscombe1

    E-Print Network [OSTI]

    Pellegrino, Sergio

    FREE ROCKING OF PRISMATIC BLOCKS By P. R. Lipscombe1 and S. Pellegrino2 ABSTRACT: This paper. This cycle comes to an end when the block becomes vertical and starts to rotate again about A. Because some

  13. Modeling of Seismic Signatures of Carbonate Rock Types

    E-Print Network [OSTI]

    Jan, Badr H.

    2011-02-22T23:59:59.000Z

    Carbonate reservoirs of different rock types have wide ranges of porosity and permeability, creating zones with different reservoir quality and flow properties. This research addresses how seismic technology can be used to identify different...

  14. Mimbres rock art: a graphic legacy of cultural expression

    E-Print Network [OSTI]

    Tidemann, Kathryn

    2002-01-01T23:59:59.000Z

    Rock art abounds along the Mimbres River banks and drainage tributaries reflecting the rich cultural remains of the ancient Mimbres people. The Mimbres are a well established cultural group who lived in southwest New Mexico and northern Mexico from...

  15. Zeolitization Of Intracaldera Sediments And Rhyolitic Rocks In...

    Open Energy Info (EERE)

    Rhyolitic Rocks In The 1.25 Ma Lake Of Valles Caldera, New Mexico, USA Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal Article: Zeolitization Of...

  16. Zeolitization Of Intracaldera Sediments And Rhyolitic Rocks In...

    Open Energy Info (EERE)

    Sediments And Rhyolitic Rocks In The 1.25 Ma Lake Of Valles Caldera, New Mexico, Usa Abstract Quantitative X-ray diffraction analysis of about 80 rhyolite and associated...

  17. DNAPL remediation of fractured rock evaluated via numerical simulation 

    E-Print Network [OSTI]

    Pang, Ti Wee

    2010-01-01T23:59:59.000Z

    Fractured rock formations represent a valuable source of groundwater and can be highly susceptible to contamination by dense, non-aqueous phase liquids (DNAPLs). The goal of this research is to evaluate the effectiveness ...

  18. Figure 2. Stratigraphic Summary of Ages, Names and Rock Types...

    Gasoline and Diesel Fuel Update (EIA)

    2. Stratigraphic Summary of Ages, Names and Rock Types in the ANWR 1002 and Coastal Plain Area of the Alaska North Slope. Potentially Productive Reservoirs and Plays Assessed by...

  19. Drill-back studies examine fractured, heated rock

    SciTech Connect (OSTI)

    Wollenberg, H.A.; Flexser, S.; Myer, L.R.

    1990-01-01T23:59:59.000Z

    To investigate the effects of heating on the mineralogical, geochemical, and mechanical properties of rock by high-level radioactive waste, cores are being examined from holes penetrating locations where electric heaters simulated the presence of a waste canister, and from holes penetration natural hydrothermal systems. Results to date indicate the localized mobility and deposition of uranium in an open fracture in heated granitic rock, the mobility of U in a breccia zone in an active hydrothermal system in tuff, and the presence of U in relatively high concentration in fracture-lining material in tuff. Mechanical -- property studies indicate that differences in compressional- and shear-wave parameters between heated and less heated rock can be attributed to differences in the density of microcracks. Emphasis has shifted from initial studies of granitic rock at Stripa, Sweden to current investigations of welded tuff at the Nevada Test Site. 7 refs., 8 figs.

  20. Rock Hill Utilities- Water Heater and Heat Pump Rebate Program

    Broader source: Energy.gov [DOE]

    Through the SmartChoice program, Rock Hill Utilities offers rebates for water heater and heat pump replacements. Information on financing for heat pumps can also be found on the web site listed...

  1. AREVA Extension Request | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742Energy China 2015ofDepartmentDepartment of2 of 5) ALARA TrainingANDREW

  2. Rock glacier monitoring with low-cost GPS

    E-Print Network [OSTI]

    moving stations on rock glacier Low-cost L1 GPS receivers (blox) Power source: solar panels Local data Rock glacier GPS antennaGPS antenna Solar panelSolar panel Box incl.Box incl. -GPS receiverData logger Instruments Solar panelSolar panel (24W, 12V, 50x50cm)(24W, 12V, 50x50cm) Costs per station: 2

  3. Reservoir rock-property calculations from thin section measurements

    E-Print Network [OSTI]

    Sneed, David Richard

    1988-01-01T23:59:59.000Z

    RESERVOIR ROCK-PROPERTY CALCULATIONS FROM THIN SECTION MEASUREMENTS A Thesis by DAVID RICHARD SNEED Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER... OF SCIENCE August 1988 Major Subject: Geology RESERVOIR ROCK-PROPERTY CALCULATIONS FROM THIN SECTION MEASUREMENTS A Thesis by DAVID RICHARD SNEED Approved as to style and content by: Robert R. Berg (Chair of Committee) ~ c(. Thomas T. Tieh (Member...

  4. Estimating seismic velocities at ultrasonic frequencies in partially saturated rocks

    SciTech Connect (OSTI)

    Mavko, G.; Nolen-Hoeksema, R. (Stanford Univ., CA (United States). Dept. of Geophysics)

    1994-02-01T23:59:59.000Z

    Seismic velocities in rocks at ultrasonic frequencies depend not only on the degree of saturation but also on the distribution of the fluid phase at various scales within the pore space. Two scales of saturation heterogeneity are important: (1) saturation differences between thin compliant pores and larger stiffer pores, and (2) differences between saturated patches and undersaturated patches at a scale much larger than any pore. The authors propose a formalism for predicting the range of velocities in partially saturated rocks that avoids assuming idealized pore shapes by using measured dry rock velocity versus pressure and dry rock porosity versus pressure. The pressure dependence contains all of the necessary information about the distribution of pore compliance for estimating effects of saturation at the finest scales where small amounts of fluid in the thinnest, most compliant parts of the pore space stiffen the rock in both compression and shear (increasing both P- and S-wave velocities) in approximately the same way that confining pressure stiffens the rock by closing the compliant pores. Large-scale saturation patches tend to increase only the high-frequency bulk modulus by amounts roughly proportional to the saturation. The pore-scale effects will be most important at laboratory and logging frequencies when pore-scale pore pressure gradients are unrelaxed. The patchy-saturation effects can persist even at seismic field frequencies if the patch sizes are sufficiently large and the diffusivities are sufficiently low for the larger-scale pressure gradients to be unrelaxed.

  5. International Journal of Rock Mechanics & Mining Sciences 38 (2001) 9951027 Bayesian estimation of rock mass boundary conditions with

    E-Print Network [OSTI]

    Pan, Ernie

    of rock mass boundary conditions with applications to the AECL underground research laboratory F. Tonon*,1 of the Underground Research Laboratory (URL) of the Atomic Energy of Canada Limited (AECL), Canada. The procedure

  6. USING GEOPHYSICAL METHODS TO IMAGE THE INTERNAL STRUCTURE OF MINE WASTE ROCK PILES

    E-Print Network [OSTI]

    Aubertin, Michel

    USING GEOPHYSICAL METHODS TO IMAGE THE INTERNAL STRUCTURE OF MINE WASTE ROCK PILES Campos, D.1-Noranda, Canada (bruno.bussiere@uqat.uquebec.ca) INTRODUCTION Mine waste rock piles, or rockwaste dumps rock piles. One of the most critical of these is water flow and water distribution in the waste rock

  7. SPE 159255-PP Rock Classification from Conventional Well Logs in Hydrocarbon-Bearing

    E-Print Network [OSTI]

    Torres-Verdín, Carlos

    typing method for application in hydrocarbon-bearing shale (specifically source rock) reservoirs using conventional well logs and core data. Source rock reservoirs are known to be highly heterogeneous and often, petrophysical description of source rock reservoirs with well logs has been focused to quantifying rock

  8. 1. INTRODUCTION There are breaks or cracks in every rock mass

    E-Print Network [OSTI]

    Maerz, Norbert H.

    [2]. Discontinuity influences all the engineering properties and behavior of rock [3]. When dealing with discontinuous rock masses, the properties of the discontinuities become a prime importance since that determines. The presence of discontinuities also affects rock properties such as the strength of the rock and the hydraulic

  9. Dynamic measurements of the nonlinear elastic parameter A in rock under varying conditions

    E-Print Network [OSTI]

    saturation. INDEX TERMS: 5102 Physical Properties of Rocks: Acoustic properties; 5112 Physical Properties of Rocks: Microstructure; 5199 Physical Properties of Rocks: General or miscellaneous; 9810 GeneralDynamic measurements of the nonlinear elastic parameter A in rock under varying conditions Paul A

  10. Chemical and petrological characteristics of the intrusive rocks of the Quitman Mountains, Texas 

    E-Print Network [OSTI]

    Seay, Christopher Sidney

    1973-01-01T23:59:59.000Z

    differentiated rock types from the diorite (1) to the last emplaced granite (9). 42 7. Calcium concentration and fluorine concentration vs. the various differentiated rock types from the diorite (1) to the last emplaced granite (9) 8. Ca percentage plotted... concentration for the various rock types from the diorite (1) to the final granite (9). . . . . . . ~ 53 13. Rb/Sr ratios for the intrusive rock types 56 14. Uranium concentrations for the intrusive rock types for the initially emplaced diorite (1...

  11. MECHANICAL DEGRADATION OF EMPLACEMENT DRIFTS AT YUCCA MOUNTAIN - A CASE STUDY IN ROCK MECHANICS, PART 1: NONLITHOPHYSAL ROCK, PART 2: LITHOPHYSAL ROCK

    SciTech Connect (OSTI)

    M. Lin, D. Kicker, B. Damjanac, M. Board, and M. Karakouzian

    2006-02-27T23:59:59.000Z

    This paper outlines rock mechanics investigations associated with mechanical degradation of planned emplacement drifts at Yucca Mountain, which is the designated site for a US high-level nuclear waste repository. The factors leading to drift degradation include stresses from the overburden, stresses induced by the heat released from the emplaced waste, stresses due to seismically related ground motions, and time-dependent strength degradation. The welded tuff emplacement horizon consists of two groups of rock with distinct engineering properties: nonlithophysal units and lithophysal units, based on the relative proportion of lithophysal cavities. Part I of the paper concentrates on the generally hard, strong, and fractured nonlithophysal rock. The degradation behavior of the tunnels in the nonlithophysal rock is controlled by the occurrence of keyblocks. A statistically equivalent fracture model was generated based on extensive underground fracture mapping data from the Exploratory Studies Facility at Yucca Mountain. Three-dimensional distinct block analyses, generated with the fracture patterns randomly selected from the fracture model, were developed with the consideration of in situ, thermal, seismic loads. In this study, field data, laboratory data, and numerical analyses are well integrated to provide a solution for the unique problem of modeling drift degradation throughout the regulatory period for repository performance.

  12. Environmental assessment of remedial action at the slick rock Uranium Mill Tailings sites Slick Rock, Colorado

    SciTech Connect (OSTI)

    Not Available

    1994-09-01T23:59:59.000Z

    The Uranium Mill Tailings Radiation Control Act of 1978 (42 USC {section} 7901 et seq.), hereafter referred to as the UMTRCA, authorized the U.S. Department of Energy (DOE) to clean up two uranium mill tailings processing sites near Slick Rock, Colorado, in San Miguel County. The purpose of the cleanup is to reduce the potential health effects associated with the radioactive materials remaining on the sites and on vicinity properties (VPs) associated with the sites. Contaminated materials cover an estimated 55 acres of the Union Carbide (UC) processing site and 12 ac of the North Continent (NC) processing site. The total estimated volume of contaminated materials is approximately 61 8,300 cubic yards. In addition to the contamination in the two processing site areas, four VPs were found to contain contamination. As a result of the tailings being exposed to the environment, contamination associated with the UC and NC sites has leached into shallow ground water. Surface water has not been affected. The closest residence is approximately 0.3 air mi from either site. The proposed action is to remediate the UC and NC sites by removing all contaminated materials within the designated site boundaries or otherwise associated with the sites, and relocating them to, and stabilizing them at, a location approximately 5 road mi (8 km) northeast of the sites on land administered by the Bureau of Land Management (BLM). Remediation would be performed by the DOE`s Uranium Mill Tailings Remedial Action (UMTRA) Project. All solid contaminated materials would be buried under 5 feet (ft) of rock and soil materials. The proposed disposal site area is currently used by ranchers for cattle grazing over a 7-month period. The closest residence to the proposed disposal site is 2 air mi. An estimated 44 ac of land would be permanently transferred from the BLM to the DOE and restricted from future use.

  13. Proceedings of the scientific visit on crystalline rock repository development.

    SciTech Connect (OSTI)

    Mariner, Paul E.; Hardin, Ernest L.; Miksova, Jitka [RAWRA, Czech Republic

    2013-02-01T23:59:59.000Z

    A scientific visit on Crystalline Rock Repository Development was held in the Czech Republic on September 24-27, 2012. The visit was hosted by the Czech Radioactive Waste Repository Authority (RAWRA), co-hosted by Sandia National Laboratories (SNL), and supported by the International Atomic Energy Agency (IAEA). The purpose of the visit was to promote technical information exchange between participants from countries engaged in the investigation and exploration of crystalline rock for the eventual construction of nuclear waste repositories. The visit was designed especially for participants of countries that have recently commenced (or recommenced) national repository programmes in crystalline host rock formations. Discussion topics included repository programme development, site screening and selection, site characterization, disposal concepts in crystalline host rock, regulatory frameworks, and safety assessment methodology. Interest was surveyed in establishing a %E2%80%9Cclub,%E2%80%9D the mission of which would be to identify and address the various technical challenges that confront the disposal of radioactive waste in crystalline rock environments. The idea of a second scientific visit to be held one year later in another host country received popular support. The visit concluded with a trip to the countryside south of Prague where participants were treated to a tour of the laboratory and underground facilities of the Josef Regional Underground Research Centre.

  14. Potential for tunneling based on rock and soil melting. Abstracts

    SciTech Connect (OSTI)

    Rowley, J.C.

    1985-01-01T23:59:59.000Z

    The rock-melting drill was invented at Los Alamos Scientific Laboratory in 1960. Electrically heated, laboratory-scale drills were subsequently shown to penetrate igneous rocks at usefully high rates, with moderate power consumptions. The development of compact nuclear reactors and of heat pipes now makes possible the extension of this technology to much larger melting penetrators, potentially capable of producing holes up to several meters in diameter and several tens of kilometers long or deep. Development of a rapid, versatile, economical method of boring large, long shafts and tunnels offers solutions to many of man's most urgent ecological, scientific, raw-materials, and energy-supply problems. A melting method appears to be the most promising and flexible means of producing such holes. It is relatively insensitive to the composition, hardness, structure, and temperature of the rock, and offers the possibilities of producing self-supporting, glass-lined holes in almost any formation and (using a technique called lithofracturing) of eliminating the debris-removal problem by forcing molten rock into cracks created in the bore wall. Large rock-melting penetrators, called Electric Subterrenes or Nuclear Subterrenes according to the energy source used, are discussed in this report, together with problems anticipated in their development. It is concluded that this development is within the grasp of present technology.

  15. Mechanical interaction between rock, buffer and canister in repositories

    SciTech Connect (OSTI)

    Borgesson, L. [Clay Technology AB, Lund (Sweden)

    1993-12-31T23:59:59.000Z

    The bentonite clay buffer, which is used in the repository concept of Sweden as well as many other countries, has an important role for mechanical protection of the canister. Of special interest is the effect of a rock shear, i.e. displacement of the rock along a fracture intersecting the deposition hole, on the canister. The article shows the results of some FEM calculations of a rock shear when the new composite copper/steel canister, is used. The effect of the swelling pressure from the bentonite before shear and the effect of a symmetric as well as an asymmetric rock shear will be shown. The calculations have been preceded by extensive laboratory tests and verification calculations by which material models for the buffer and proper calculation techniques have been developed. The material model for the clay is an elastic plastic model in which porous elasticity, based on the effective stress theory, is combined with Drucker-Prager plasticity. The results indicate that the bentonite clay acts as a very good mechanical buffer against such rock displacements. Although plastic yielding may occur, mainly in the copper, the plastic strain is not more than a few percent just after the shear.

  16. Mesozoic and Cenozoic rocks from Malta Escarpment (central Mediterranean)

    SciTech Connect (OSTI)

    Scandone, P. (Istituto di Geologia e Paleontologia, Pisa, Italy); Patacca, E.; Radoicic, R.; Ryan, W.B.F.; Cita, M.B.; Rawson, M.; Chezar, H.; Miller, E.; McKenzie, J.; Rossi, S.

    1981-07-01T23:59:59.000Z

    Sedimentary rocks of Triassic-Neogene age are present on the Malta Escarpment of the eastern Mediterranean. Upper Triassic dolomitic limestones of shallow-water origin, at depths between 2.5 and 3.5 km, are similar in lithofacies to coeval platform carbonates of the Siracusa (Syracuse) belt of southern Sicily. Jurassic rocks include lower-middle Liassic shallow-water limestones followed by condensed hemipelagic lime deposits indicative of sinking and starving of the former platform. Cretaceous materials are represented by both red marls rich in planktonic faunas and reworkd volcaniclastic breccias including shallow-water skeletal material. Paleogene rocks are both shallow-water limestones with corals, algae, and bivalves, and redeposited calcarenites of lithofacies similar to those from surface and subsurface of the Ragusa zone. Oligocene-lower Miocene rocks from the escarpment are also similar in lithology to the coeval Ragusa deposits. Tortonian is represented by hemipelagic marls indicating open-marine environment. Pervasive dolomitization on lime crusts and on initial-stage fissure fillings with strongly positive isotopic oxygen ratio is thought to be a product of Messinian evaporitic drawdown. Pliocene sediments belong to the Trubi facies and consist of pelagic foraminiferal chalk. An impressive vertical relief existed by Miocene times, as attested by Messinian crusts and veins on or in rocks as old as Late Triassic. Our data do not provide evidence that this morphologic feature necessarily coincides with a continent-ocean transition. The present escarpment was produced by faulting, erosion, and defacement. 14 figures, 1 table.

  17. Multiporosity Flow in Fractured Low-Permeability Rocks

    E-Print Network [OSTI]

    Kuhlman, Kristopher L; Heath, Jason E

    2015-01-01T23:59:59.000Z

    A multiporosity extension of classical double and triple porosity fractured rock flow models for slightly compressible fluids is presented. The multiporosity model is an adaptation of the multirate solute transport model of Haggerty and Gorelick (1995) to viscous flow in fractured rock reservoirs. It is a generalization of both pseudo-steady-state and transient interporosity flow double porosity models. The model includes a fracture continuum and an overlapping distribution of multiple rock matrix continua, whose fracture-matrix exchange coefficients are specified through a discrete probability mass function. Semi-analytical cylindrically symmetric solutions to the multiporosity mathematical model are developed using the Laplace transform to illustrate its behavior. The multiporosity model presented here is conceptually simple, yet flexible enough to simulate common conceptualizations of double and triple porosity flow. This combination of generality and simplicity makes the multiporosity model a good choice ...

  18. Superhard nanophase cutter materials for rock drilling applications

    SciTech Connect (OSTI)

    Voronov, O.; Tompa, G.; Sadangi, R.; Kear, B.; Wilson, C.; Yan, P.

    2000-06-23T23:59:59.000Z

    The Low Pressure-High Temperature (LPHT) System has been developed for sintering of nanophase cutter and anvil materials. Microstructured and nanostructured cutters were sintered and studied for rock drilling applications. The WC/Co anvils were sintered and used for development of High Pressure-High Temperature (HPHT) Systems. Binderless diamond and superhard nanophase cutter materials were manufactured with help of HPHT Systems. The diamond materials were studied for rock machining and drilling applications. Binderless Polycrystalline Diamonds (BPCD) have high thermal stability and can be used in geothermal drilling of hard rock formations. Nanophase Polycrystalline Diamonds (NPCD) are under study in precision machining of optical lenses. Triphasic Diamond/Carbide/Metal Composites (TDCC) will be commercialized in drilling and machining applications.

  19. SEISMIC AND ROCK PHYSICS DIAGNOSTICS OF MULTISCALE RESERVOIR TEXTURES

    SciTech Connect (OSTI)

    Gary Mavko

    2003-10-01T23:59:59.000Z

    As part of our study on ''Relationships between seismic properties and rock microstructure'', we have (1) Studied relationships between velocity and permeability. (2) Used independent experimental methods to measure the elastic moduli of clay minerals as functions of pressure and saturation. (3) Applied different statistical methods for characterizing heterogeneity and textures from scanning acoustic microscope (SAM) images of shale microstructures. (4) Analyzed the directional dependence of velocity and attenuation in different reservoir rocks (5) Compared Vp measured under hydrostatic and non-hydrostatic stress conditions in sands. (6) Studied stratification as a source of intrinsic anisotropy in sediments using Vp and statistical methods for characterizing textures in sands.

  20. Stephen C. Ruppel Principal Investigator

    E-Print Network [OSTI]

    Texas at Austin, University of

    distribution and thermal maturity ·Upscaling ·Wireline log & 3D calibration ·Rock mechanics: geomechanical Shale, Texas, Louisiana ·Eagle Ford Shale, South Texas ·Pearsall Shale, Gulf Coast Basin ·Bakken Shale

  1. Hot dry rock energy: Hot dry rock geothermal development program. Progress report. Fiscal year 1993

    SciTech Connect (OSTI)

    Salazar, J.; Brown, M. [eds.

    1995-03-01T23:59:59.000Z

    Extended flow testing at the Fenton Hill Hot Dry Rock (HDR) test facility concluded in Fiscal Year 1993 with the completion of Phase 2 of the long-term flow test (LTFT) program. As is reported in detail in this report, the second phase of the LTFT, although only 55 days in duration, confirmed in every way the encouraging test results of the 112-day Phase I LTFT carried out in Fiscal Year 1992. Interim flow testing was conducted early in FY 1993 during the period between the two LTFT segments. In addition, two brief tests involving operation of the reservoir on a cyclic schedule were run at the end of the Phase 2 LTFT. These interim and cyclic tests provided an opportunity to conduct evaluations and field demonstrations of several reservoir engineering concepts that can now be applied to significantly increase the productivity of HDR systems. The Fenton Hill HDR test facility was shut down and brought into standby status during the last part of FY 1993. Unfortunately, the world`s largest, deepest, and most productive HDR reservoir has gone essentially unused since that time.

  2. Environmental assessment of remedial action at the Slick Rock uranium mill tailings sites, Slick Rock, Colorado

    SciTech Connect (OSTI)

    NONE

    1995-01-01T23:59:59.000Z

    The Uranium Mill Tailings Radiation Control Act of 1978, hereafter referred to as the UMTRCA, authorized the US Department of Energy (DOE) to clean up two uranium mill tailings processing sites near Slick Rock, Colorado, in San Miguel County. The purpose of the cleanup is to reduce the potential health effects associated with the radioactive materials remaining on the processing sites and on vicinity properties (VPs) associated with the sites. The US Environmental Protection Agency (EPA) promulgated standards for the UMTRCA that contained measures to control the contaminated materials and to protect the ground water from further degradation. The sites contain concrete foundations of mill buildings, tailings piles, and areas contaminated by windblown and waterborne radioactive tailings materials. The proposed action is to remediate the UC and NC sites by removing all contaminated materials within the designated site boundaries or otherwise associated with the sites, and relocating them to, and stabilizing them at, a location approximately 5 road mi (8 km) northeast of the processing sites on land administered by the US Bureau of Land Management (BLM). Remediation would be performed by the DOE`s Uranium Mill Tailings Remedial Action (UMTRA) Project.

  3. ACG Practical Rock Mechanics and Ground Support in Mining Courses

    E-Print Network [OSTI]

    Tobar, Michael

    CENTRE FOR GEOMECHANICS Ph: +61 8 6488 3300 Fax: +61 8 6488 1130 info for Geomechanics. Practical Rock Mechanics (Introduction) Short Course 28­29 July 2014 Course objectives This course is designed to develop specific underground mining geomechanics competencies for mine geologists

  4. SEISMIC AND ROCK PHYSICS DIAGNOSTICS OF MULTISCALE RESERVOIR TEXTURES

    SciTech Connect (OSTI)

    Gary Mavko

    2003-06-30T23:59:59.000Z

    As part of our study on ''Relationships between seismic properties and rock microstructure'', we have studied (1) Methods for detection of stress-induced velocity anisotropy in sands. (2) We have initiated efforts for velocity upscaling to quantify long-wavelength and short-wavelength velocity behavior and the scale-dependent dispersion caused by sediment variability in different depositional environments.

  5. Columbia River Channel Improvement Project Rock Removal Blasting: Monitoring Plan

    SciTech Connect (OSTI)

    Carlson, Thomas J.; Johnson, Gary E.

    2010-01-29T23:59:59.000Z

    This document provides a monitoring plan to evaluate take as outlined in the National Marine Fisheries Service 2002 Biological Opinion for underwater blasting to remove rock from the navigation channel for the Columbia River Channel Improvement Project. The plan was prepared by the Pacific Northwest National Laboratory (PNNL) for the U.S. Army Corps of Engineers (USACE), Portland District.

  6. SEISMIC AND ROCK PHYSICS DIAGNOSTICS OF MULTISCALE RESERVOIR TEXTURES

    SciTech Connect (OSTI)

    Gary Mavko

    2004-08-01T23:59:59.000Z

    As part of our study on ''Relationships between seismic properties and rock microstructure'', we have continued our work on analyzing well logs and microstructural constraints on seismic signatures. We report results of three studies in this report. The first one deals with fractures and faults that provide the primary control on the underground fluid flow through low permeability massive carbonate rocks. Fault cores often represent lower transmissibility whereas the surrounding damaged rocks and main slip surfaces are high transmissibility elements. We determined the physical properties of fault rocks collected in and around the fault cores of large normal faults in central Italy. After studying the P- and S-wave velocity variation during cycles of confining pressure, we conclude that a rigid pore frame characterizes the fault gouge whereas the fractured limestone comprises pores with a larger aspect ratio. The second study was to characterize the seismic properties of brine as its temperature decreases from 25 C to -21 C. The purpose was to understand how the transmitted wave changes with the onset of freezing. The main practical reason for this experiment was to use partially frozen brine as an analogue for a mixture of methane hydrate and water present in the pore space of a gas hydrate reservoir. In the third study we analyzed variations in dynamic moduli in various carbonate reservoirs. The investigations include log and laboratory data from velocity, porosity, permeability, and attenuation measurements.

  7. Multispectral rock-type separation and classification Biliana Paskaleva

    E-Print Network [OSTI]

    Hayat, Majeed M.

    , igneous and sedimentary rocks. The study is performed under ideal conditions for which the data-selection method is also employed based on spectral indices comprising a small subset of all possible ratios, an optimization strategy is performed for the selection of optimal multispectral filters, other than the MTI

  8. Investigation of a hydraulic impact a technology in rock breaking

    E-Print Network [OSTI]

    in mining industry. The impact process of a high speed piston on liquid water, previously introduced on the environment such as fly rocks, air blast, noise pollution and toxic fumes. When blasting occurs close to residential areas, or during tunnel construction, environmental protection regulation could seriously affect

  9. Gravimeter yields rock density for cavern during operations

    SciTech Connect (OSTI)

    Folle, S.; Rolfs, O. [Kavernen Bau- and Betriebs-GmbH, Hannover (Germany)

    1996-01-22T23:59:59.000Z

    Designing underground cavities and especially planning for caverns in salt formations for storage require investigations of several questions that are posed in this paper. A downhole gravimeter can determine rock density in a natural gas storage cavern while it is in operation or still being solution mined. Operating conditions or solution mining in progress precludes use of a standard density tool during conventional well-logging procedures. Rock density is one of the principal input parameters for rock mechanical investigations in specifying optimum pressure levels in storage caverns. The advantages and disadvantages of the system, as well as of the technical logging procedures, follow. The gravimeter tool: measures rock densities up to approximately 20 m into the formation; logs through casing (independent of a drilling rig); is unaffected by drilling mud; is unaffected by size and variation of caliber. But it also: does not measure continuously; makes logging time-consuming and requires a certain mobilization time; delivers data whose accuracy depends o the homogeneity of the formation or level of information available on the structure in question.

  10. Ion beam analyses of radionuclide migration in heterogeneous rocks

    SciTech Connect (OSTI)

    Alonso, Ursula; Missana, Tiziana; Garcia-Gutierrez, Miguel [CIEMAT, Avda. Complutense 40, Madrid 28040 (Spain); Patelli, Alessandro [CIVEN, Via delle Industrie 5, Venezia-Marghera 30175 (Italy); Rigato, Valentino; Ceccato, Daniele [LNL-INFN, Viale dell' Universita 2, Legnaro-Padova 35020 (Italy)

    2013-07-18T23:59:59.000Z

    The migration of radionuclides (RN) in the environment is a topic of general interest, for its implications on public health, and it is an issue for the long-term safety studies of deep geological repositories (DGR) for high-level radioactive waste. The role played by colloids on RN migration is also of great concern. Diffusion and sorption are fundamental mechanisms controlling RN migration in rocks and many experimental approaches are applied to determine transport parameters for low sorbing RN in homogeneous rocks. However, it is difficult to obtain relevant data for high sorbing RN or colloids, for which diffusion lengths are extremely short, or within heterogeneous rocks, where transport might be different in different minerals. The ion beam techniques Rutherford Backscattering Spectrometry (RBS) and micro-Particle Induced X-Ray Emission ({mu}PIXE), rarely applied in the field, were selected for their micro-analytical potential to study RN diffusion and surface retention within heterogeneous rocks. Main achievements obtained during last 12 years are highlighted.

  11. Onboard Autonomous Rock Shape Analysis For Mars Rovers

    E-Print Network [OSTI]

    in this process, we present an automated technique to allow a rover to classify the shape and other geologic were conducted by characterizing the two-dimensional rock shape while the three-dimensional shape developed and implemented. The per- formance of each measure was characterized by analyzing images from

  12. ConocoPhillips Canada rocks UAlberta science and engineering students

    E-Print Network [OSTI]

    Machel, Hans

    ConocoPhillips Canada rocks UAlberta science and engineering students Teaching, research spaces. As an ongoing supporter of geoscience field schools, ConocoPhillips Canada has provided more than $3.1 million Program at the U of A, the only one of its kind in Canada. "The support from ConocoPhillips Canada

  13. Morphology and dynamics of explosive vents through cohesive rock formations

    E-Print Network [OSTI]

    Galland, Olivier

    to test the effects of these parameters. The experiments were used to test the effect of 2 on vent simulations were used to test the effect of 3 on vent morphology and dynamics. In the numerical models we see to underground explosions that blast the overlaying rock formations [e.g., Gisler, 2009]. This phenomenon occurs

  14. Rock-physics Models for Gas-hydrate Systems Associated

    E-Print Network [OSTI]

    Texas at Austin, University of

    Rock-physics Models for Gas-hydrate Systems Associated with Unconsolidated Marine Sediments Diana at Austin, Austin, Texas, U.S.A. ABSTRACT R ock-physics models are presented describing gas-hydrate systems associated with unconsolidated marine sediments. The goals are to predict gas-hydrate concentration from

  15. 2008 Rock Deformation GRC - Conference August 3-8, 2008

    SciTech Connect (OSTI)

    James G. Hirth

    2009-09-21T23:59:59.000Z

    The GRC on Rock Deformation highlights the latest research in brittle and ductile rock mechanics from experimental, field and theoretical perspectives. The conference promotes a multi-disciplinary forum for assessing our understanding of rock strength and related physical properties in the Earth. The theme for the 2008 conference is 'Real-time Rheology'. Using ever-improving geophysical techniques, our ability to constrain the rheological behavior during earthquakes and post-seismic creep has improved significantly. Such data are used to investigate the frictional behavior of faults, processes responsible for strain localization, the viscosity of the lower crust, and viscous coupling between the crust and mantle. Seismological data also provide information on the rheology of the lower crust and mantle through analysis of seismic attenuation and anisotropy. Geologists are improving our understanding of rheology by combining novel analyses of microstructures in naturally deformed rocks with petrologic data. This conference will bring together experts and students in these research areas with experimentalists and theoreticians studying the same processes. We will discuss and assess where agreement exists on rheological constraints derived at different length/time scales using different techniques - and where new insight is required. To encompass the elements of these topics, speakers and discussion leaders with backgrounds in geodesy, experimental rock deformation, structural geology, earthquake seismology, geodynamics, glaciology, materials science, and mineral physics will be invited to the conference. Thematic sessions will be organized on the dynamics of earthquake rupture, the rheology of the lower crust and coupling with the upper mantle, the measurement and interpretation of seismic attenuation and anisotropy, the dynamics of ice sheets and the coupling of reactive porous flow and brittle deformation for understanding geothermal and chemical properties of the shallow crust that are important for developing ideas in CO2 sequestration, geothermal and petrochemical research and the mechanics of shallow faults.

  16. Search for underground openings for in situ test facilities in crystalline rock

    SciTech Connect (OSTI)

    Wollenberg, H.A.; Strisower, B.; Corrigan, D.J.; Graf, A.N.; O'Brien, M.T.; Pratt, H.; Board, M.; Hustrulid, W.

    1980-01-01T23:59:59.000Z

    With a few exceptions, crystalline rocks in this study were limited to plutonic rocks and medium to high-grade metamorphic rocks. Nearly 1700 underground mines, possibly occurring in crystalline rock, were initially identified. Application of criteria resulted in the identification of 60 potential sites. Within this number, 26 mines and 4 civil works were identified as having potential in that they fulfilled the criteria. Thirty other mines may have similar potential. Most of the mines identified are near the contact between a pluton and older sedimentary, volcanic and metamorphic rocks. However, some mines and the civil works are well within plutonic or metamorphic rock masses. Civil works, notably underground galleries associated with pumped storage hydroelectric facilities, are generally located in tectonically stable regions, in relatively homogeneous crystalline rock bodies. A program is recommended which would identify one or more sites where a concordance exists between geologic setting, company amenability, accessibility and facilities to conduct in situ tests in crystalline rock.

  17. Fundamental Investigation of Pore Pressure Prediction During Drilling from the Mechanical Behavior of Rock

    E-Print Network [OSTI]

    Rivas Cardona, Juan 1980-

    2011-07-18T23:59:59.000Z

    An investigation was conducted as a preliminary effort to develop a methodology to predict pore pressure in a rock formation during drilling, for all types of rocks and situations. Specifically, it was investigated whether or not the virgin pore...

  18. The effects of acid contact time and rock surfaces on acid fracture conductivity 

    E-Print Network [OSTI]

    Melendez Castillo, Maria Georgina

    2009-06-02T23:59:59.000Z

    likely to retain conductivity after closure. The hardness of the rock is the dominating factor to determine the conductivity response when no channeling is present. Among the rocks tested, Texas Cream chalk had the lowest hardness measurement before...

  19. Modeling of thermally driven hydrological processes in partially saturated fractured rock

    E-Print Network [OSTI]

    Tsang, Yvonne

    2010-01-01T23:59:59.000Z

    the heat source and encounters cooler rock, it condenses,fractured rock near the radioactive-decay heat source isrock, giving rise to a reflux of liquid back to the heat source.

  20. Transport and seismoelectric properties of porous permeable rock : numerical modeling and laboratory measurements

    E-Print Network [OSTI]

    Zhan, Xin, Ph. D. Massachusetts Institute of Technology

    2010-01-01T23:59:59.000Z

    The objective of this thesis is to better understand the transport and seismoelectric (SE) properties of porous permeable rock. Accurate information of rock transport properties, together with pore geometry, can aid us to ...

  1. Rock-Water Interactions in the Fenton Hill, New Mexico, Hot Dry...

    Open Energy Info (EERE)

    to: navigation, search OpenEI Reference LibraryAdd to library Journal Article: Rock-Water Interactions in the Fenton Hill, New Mexico, Hot Dry Rock Geothermal Systems I. Fluid...

  2. Rock-Water Interactions in the Fenton Hill, New Mexico, Hot Dry...

    Open Energy Info (EERE)

    to: navigation, search OpenEI Reference LibraryAdd to library Journal Article: Rock-Water Interactions in the Fenton Hill, New Mexico, Hot Dry Rock Geothermal Systems II....

  3. Coupled hydro-mechanical processes in crytalline rock and in induratedand plastic clays: A comparative discussion

    E-Print Network [OSTI]

    Tsang, Chin-Fu; Blumling, Peter; Bernier, Frederic

    2008-01-01T23:59:59.000Z

    at Grimsel. In Coupled Thermo-Hydro- Mechanical-ChemicalCOUPLED HYDRO-MECHANICAL PROCESSES IN CRYTALLINE ROCK AND IN

  4. Stochastic numerical simulations of long term unsaturated flow in waste rock piles

    E-Print Network [OSTI]

    Aubertin, Michel

    Stochastic numerical simulations of long term unsaturated flow in waste rock piles O. Fala Genivar water flow in waste rock piles using selected realizations of stochastically distributed hydraulic term hydrogeological behaviour of waste rock piles, to help select the construction sequence

  5. Determining the modal mineralogy of mafic and ultramafic igneous rocks using thermal emission spectroscopy

    E-Print Network [OSTI]

    Hamilton, Victoria E.

    Determining the modal mineralogy of mafic and ultramafic igneous rocks using thermal emission, Tempe Abstract. The modal mineralogies of 20 mafic and ultramafic igneous rocks were determined from mineralogical information from thermal infrared emission spectra of bulk rock samples. Furthermore, convolution

  6. THE CONVERSION OF BIOMASS TO ETHANOL USING GEOTHERMAL ENERGY DERIVED FROM HOT DRY ROCK

    E-Print Network [OSTI]

    97505 THE CONVERSION OF BIOMASS TO ETHANOL USING GEOTHERMAL ENERGY DERIVED FROM HOT DRY ROCK between a hot dry rock (HDR) geothermal energy source and the power requirements for the conversion -- geothermal energy derived from the vast resource of Hot Dry Rock (HDR) in our country, and biomass

  7. A Mechanism of Improved Oil Recovery by Low-Salinity Waterflooding in Sandstone Rock

    E-Print Network [OSTI]

    Nasralla, Ramez

    2013-05-02T23:59:59.000Z

    -salinity water has an impact on the rock wettability; the more reduction in water salinity, the more a water-wet rock surface is produced. In addition, NaCl solutions made the rock more water-wet compared to CaCl2 or MgCl2 at the same concentration. Low...

  8. URTeC 1620617 Thermal Shock in Reservoir Rock Enhances the Hydraulic

    E-Print Network [OSTI]

    Patzek, Tadeusz W.

    URTeC 1620617 Thermal Shock in Reservoir Rock Enhances the Hydraulic Fracturing of Gas Shales Saeid through strain and stress. As the temperature diffuses from hydraulic fracture into reservoir the rock matrix beyond hydraulic fracturing stimulation by cooling down the rock. The physics

  9. EFFECT OF ENCROACHMENT OF WANAPUM DAM RESERVOIR ON FISH PASSAGE OVER ROCK ISLAND DAM, COLUMBIA RIVER

    E-Print Network [OSTI]

    EFFECT OF ENCROACHMENT OF WANAPUM DAM RESERVOIR ON FISH PASSAGE OVER ROCK ISLAND DAM, COLUMBIA the lower sections of the three fish ladders at Rock Island Dam, 61 km upstream from Wanapum Dam of the center and left-bank fish ladders of Rock Island Dam were rebuilt and a new sequence of spill patterns

  10. Organic Geochemistry of the CenomanianTuronian Bahloul Formation Petroleum Source Rock, Central and Northern Tunisia

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    1 Organic Geochemistry of the Cenomanian­Turonian Bahloul Formation Petroleum Source Rock, Central and around diapirs of the Triassic salt. Key words: Organic matter, Petroleum Source Rock, Cenomanian (TOC) determination, Rock-Eval pyrolysis, extractable organic matter content (EOM) fractionation

  11. SOURCE AND EFFECT OF ACID ROCK DRAINAGE IN THE SNAKE RIVER WATERSHED, SUMMIT COUNTY, COLORADO

    E-Print Network [OSTI]

    SOURCE AND EFFECT OF ACID ROCK DRAINAGE IN THE SNAKE RIVER WATERSHED, SUMMIT COUNTY, COLORADO Belanger, Laura (M.S., Civil, Environmental and Architectural Engineering) Source and Effect of Acid Rock (the weathering of disseminated pyrite) sources of acid rock drainage (ARD). Stream waters

  12. The Rock Varnish Revolution: New Insights from Microlaminations and the Contributions of Tanzhuo Liu

    E-Print Network [OSTI]

    Dorn, Ron

    in potential source materials. In the ensuing two centu- ries, investigations into rock varnish have beenThe Rock Varnish Revolution: New Insights from Microlaminations and the Contributions of Tanzhuo Liu Ronald I. Dorn* School of Geographical Sciences, Arizona State University Abstract Rock varnish

  13. Chemical weathering of granitic rock: experiments and Pb-Li isotopes tracing Romain Millot

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    is to better constrain the processes of water/rock interactions both in terms of source (dissolutionChemical weathering of granitic rock: experiments and Pb-Li isotopes tracing Romain Millot Philippe of weathering. In order to go further and to better characterize water/rock interactions, we performed

  14. Organic matter characteristics of CenomanianTuronian source rocks: implications for petroleum and gas

    E-Print Network [OSTI]

    Boyer, Edmond

    Organic matter characteristics of Cenomanian­Turonian source rocks: implications for petroleum from the Senegal margin basin, believed to be the main source rocks in the area, have been matter sources; Depositional environment; Petroleum source rock #12;1. Introduction Fig. 1. (a) Map

  15. SIZE COMPOSITION AND GROWTH OF YOUNG ROCK CRAB, CANCER IRRORATUS, ON A ROCKY BEACH IN MAINE!

    E-Print Network [OSTI]

    . Because rock crab is a valuable commercial species as well as an important food source of lobsters (EnnisSIZE COMPOSITION AND GROWTH OF YOUNG ROCK CRAB, CANCER IRRORATUS, ON A ROCKY BEACH IN MAINE! JAY S KROUSE' ABSTRACT Monthly hand collections of small rock crab, Cancer irrorallls, were made from

  16. Creep of Two Alpine Rock Glaciers Observation and Modelling (tztal-and Stubai Alps, Austria)

    E-Print Network [OSTI]

    Brückl, Ewald

    glaciers. The source areas of these rock glaciers are situated at altitudes of 2700 to 2800 m aCreep of Two Alpine Rock Glaciers ­ Observation and Modelling (Ötztal- and Stubai Alps, Austria), Wolfram Mostler (Innsbruck) Abstract Our study concentrates on two active rock glaciers in the Eastern

  17. RELATING GEOPHYSICAL AND HYDROLOGIC PROPERTIES USING FIELD-SCALE ROCK PHYSICS

    E-Print Network [OSTI]

    Knight, Rosemary

    CMWRXVI 1 RELATING GEOPHYSICAL AND HYDROLOGIC PROPERTIES USING FIELD-SCALE ROCK PHYSICS STEPHEN has been made by rock physics investigations that define how pore-scale variations in properties like in pore-scale rock properties with an understanding of geophysical sampling at the field

  18. The influence of rock heterogeneity on the scaling properties of simulated3 and natural stylolites4

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    1 1 2 The influence of rock heterogeneity on the scaling properties of simulated3 and natural prominent deformation patterns in sedimentary rocks that24 document localized pressure solution. Recent is caused by the composition of27 the host rock, i.e. heterogeneities in the material, or is governed

  19. Diagenetic variation in the Oregon Coast Range: Implications for rock strength, soil production,

    E-Print Network [OSTI]

    Roering, Joshua J.

    properties and their influence on rock strength, hillslope processes, and landscape morphology in two, providing a framework to quantify how seemingly subtle variations in rock properties can impose first on landscape evolution has been noted by many observers, functional relationships between rock properties

  20. Bidirectional Seismic Behavior of Controlled Rocking Four-Legged Bridge Steel Truss Piers

    E-Print Network [OSTI]

    Bruneau, Michel

    Bidirectional Seismic Behavior of Controlled Rocking Four-Legged Bridge Steel Truss Piers Michael rocking bridge steel truss piers to three components of seismic excitation are presented in this paper. The controlled rocking approach for seismic protection allows a pier to uplift from its base, limiting the force

  1. Mitigation of light rail transit construction on jurisdictional areas in the White Rock Creek floodplain, Dallas, Texas

    E-Print Network [OSTI]

    Schieffer, Emily; Smiley, Jerry

    2001-01-01T23:59:59.000Z

    AREAS IN THE WHITE ROCK CREEK FLOODPLAIN, DALLAS, TEXAS1.2-miles of the White Rock Creek floodplain near theconfluence of three creeks and adjacent to approximately

  2. Lithophysal Rock Mass Mechanical Properties of the Repository Host Horizon

    SciTech Connect (OSTI)

    D. Rigby

    2004-11-10T23:59:59.000Z

    The purpose of this calculation is to develop estimates of key mechanical properties for the lithophysal rock masses of the Topopah Spring Tuff (Tpt) within the repository host horizon, including their uncertainties and spatial variability. The mechanical properties to be characterized include an elastic parameter, Young's modulus, and a strength parameter, uniaxial compressive strength. Since lithophysal porosity is used as a surrogate property to develop the distributions of the mechanical properties, an estimate of the distribution of lithophysal porosity is also developed. The resulting characterizations of rock parameters are important for supporting the subsurface design, developing the preclosure safety analysis, and assessing the postclosure performance of the repository (e.g., drift degradation and modeling of rockfall impacts on engineered barrier system components).

  3. Numerical evaluation of effective unsaturated hydraulic properties for fractured rocks

    SciTech Connect (OSTI)

    Lu, Zhiming [Los Alamos National Laboratory; Kwicklis, Edward M [Los Alamos National Laboratory

    2009-01-01T23:59:59.000Z

    To represent a heterogeneous unsaturated fractured rock by its homogeneous equivalent, Monte Carlo simulations are used to obtain upscaled (effective) flow properties. In this study, we present a numerical procedure for upscaling the van Genuchten parameters of unsaturated fractured rocks by conducting Monte Carlo simulations of the unsaturated flow in a domain under gravity-dominated regime. The simulation domain can be chosen as the scale of block size in the field-scale modeling. The effective conductivity is computed from the steady-state flux at the lower boundary and plotted as a function of the averaging pressure head or saturation over the domain. The scatter plot is then fitted using van Genuchten model and three parameters, i.e., the saturated conductivity K{sub s}, the air-entry parameter {alpha}, the pore-size distribution parameter n, corresponding to this model are considered as the effective K{sub s}, effective {alpha}, and effective n, respectively.

  4. Prehistoric Rock Structures of the Idaho National Laboratory

    SciTech Connect (OSTI)

    Brenda R Pace

    2007-04-01T23:59:59.000Z

    Over the past 13,500 years, human populations have lived in and productively utilized the natural resources offered by the cold desert environment of the northeastern Snake River Plain in eastern Idaho. Within an overall framework of hunting and gathering, groups relied on an intimate familiarity with the natural world and developed a variety of technologies to extract the resources that they needed to survive. Useful items were abundant and found everywhere on the landscape. Even the basaltic terrain and the rocks, themselves, were put to productive use. This paper presents a preliminary classification scheme for rock structures built on the Idaho National Laboratory landscape by prehistoric aboriginal populations, including discussions of the overall architecture of the structures, associated artifact assemblages, and topographic placement. Adopting an ecological perspective, the paper concludes with a discussion of the possible functions of these unique resources for the desert populations that once called the INL home.

  5. ForPeerReview Cavity expansion in cross anisotropic rock

    E-Print Network [OSTI]

    Wagner, Peter

    for Numerical and Analytical Methods in Geomechanics Manuscript ID: NAG-10-0026.R1 Wiley - Manuscript type in Geomechanics #12;ForPeerReview Only Cavity expansion in cross-anisotropic rock Dimitrios Kolymbas Peter Wagner://mc.manuscriptcentral.com/nag International Journal for Numerical and Analytical Methods in Geomechanics 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

  6. Fluid-Rock Characterization and Interactions in NMR Well Logging

    SciTech Connect (OSTI)

    Hirasaki, George J.; Mohanty, Kishore K.

    2003-02-10T23:59:59.000Z

    The objective of this project was to characterize the fluid properties and fluid-rock interactions which are needed for formation evaluation by NMR well logging. NMR well logging is finding wide use in formation evaluation. The formation parameters commonly estimated were porosity, permeability, and capillary bound water. Special cases include estimation of oil viscosity, residual oil saturation, location of oil/water contact, and interpretation on whether the hydrocarbon is oil or gas.

  7. Fluid-Rock Characterization and Interactions in NMR Well Logging

    SciTech Connect (OSTI)

    Hirasaki, George J.; Mohanty, Kishore K.

    2003-02-10T23:59:59.000Z

    The objective of this project was to characterize the fluid properties and fluid-rock interactions that are needed for formation evaluation by NMR well logging. The advances made in the understanding of NMR fluid properties are summarized in a chapter written for an AAPG book on NMR well logging. This includes live oils, viscous oils, natural gas mixtures, and the relation between relaxation time and diffusivity.

  8. Neutron Production from the Fracture of Piezoelectric Rocks

    E-Print Network [OSTI]

    A. Widom; J. Swain; Y. N. Srivastava

    2012-02-08T23:59:59.000Z

    A theoretical explanation is provided for the experimental evidence that fracturing piezoelectric rocks produces neutrons. The elastic energy micro-crack production ultimately yields the macroscopic fracture. The mechanical energy is converted by the piezoelectric effect into electric field energy. The electric field energy decays via radio frequency (microwave) electric field oscillations. The radio frequency electric fields accelerate the condensed matter electrons which then collide with protons producing neutrons and neutrinos.

  9. Rock climbing sub-worlds: a segmentation study

    E-Print Network [OSTI]

    Rapelje, Brandon Wayne

    2004-11-15T23:59:59.000Z

    , participated in some form of climbing in 2001. The number of rock climbing participants has steadily increased over the past three decades (Attarian & Pyke, 2000; Cordell et al., 1997; Heath, 1997;). While the number of participants has been increasing... to the glamorization it received by the popular media (Dierick, 2002; Heath, 1997). Movies showing action stars performing incredible feats, such as Tom Cruise in ?Mission Impossible 2? and Sylvester Stallone in ?Cliffhanger,? are only part of the total exposure...

  10. Compaction around a rigid, circular inclusion in partially molten rock

    E-Print Network [OSTI]

    Alisic, Laura; Rudge, John F.; Katz, Richard F.; Wells, Garth N.; Rhebergen, Sander

    2014-07-09T23:59:59.000Z

    of melt from the mantle control the chemical evolution of the mantle and crust over geological time. Observations of petrological and isotopic disequilibrium suggest that melt extraction to produce oceanic crust is rapid and potentially localized... . 5919 Journal of Geophysical Research: Solid Earth 10.1002/2013JB010906 Holtzman, B. K., and D. L. Kohlstedt (2007), Stress-driven melt segregation and strain partitioning in partially molten rocks: Effects of stress and strain, J. Petrology, 48...

  11. Hilbert transform based analyses on ship-rocking signals

    E-Print Network [OSTI]

    Huang, Wei; Kang, Deyong; Chen, Zhi

    2015-01-01T23:59:59.000Z

    The ship-rocking is a crucial factor which affects the accuracy of the ocean-based flight vehicle measurement. Here we have analyzed four groups of ship-rocking time series in horizontal and vertical directions utilizing a Hilbert based method from statistical physics. Our method gives a way to construct an analytic signal on the two-dimensional plane from a one-dimensional time series. The analytic signal share the complete property of the original time series. From the analytic signal of a time series, we have found some information of the original time series which are often hidden from the view of the conventional methods. The analytic signals of interest usually evolve very smoothly on the complex plane. In addition, the phase of the analytic signal is usually moves linearly in time. From the auto-correlation and cross-correlation functions of the original signals as well as the instantaneous amplitudes and phase increments of the analytic signals we have found that the ship-rocking in horizontal directi...

  12. Flow dynamics and solute transport in unsaturated rock fractures

    SciTech Connect (OSTI)

    Su, G. W.

    1999-10-01T23:59:59.000Z

    Rock fractures play an important role in flow and contaminant transport in fractured aquifers, production of oil from petroleum reservoirs, and steam generation from geothermal reservoirs. In this dissertation, phenomenological aspects of flow in unsaturated fractures were studied in visualization experiments conducted on a transparent replica of a natural, rough-walled rock fracture for inlet conditions of constant pressure and flow rate over a range of angles of inclination. The experiments demonstrated that infiltrating liquid proceeds through unsaturated rock fractures along non-uniform, localized preferential flow paths. Even in the presence of constant boundary conditions, intermittent flow was a persistent flow feature observed, where portions of the flow channel underwent cycles of snapping and reforming. Two modes of intermittent flow were observed, the pulsating blob mode and the rivulet snapping mode. A conceptual model for the rivulet snapping mode was proposed and examined using idealized, variable-aperture fractures. The frequency of intermittent flow events was measured in several experiments and related to the capillary and Bond numbers to characterize this flow behavior.

  13. Protected Polycrystalline Diamond Compact Bits For Hard Rock Drilling

    SciTech Connect (OSTI)

    Robert Lee Cardenas

    2000-10-31T23:59:59.000Z

    Two bits were designed. One bit was fabricated and tested at Terra-Tek's Drilling Research Laboratory. Fabrication of the second bit was not completed due to complications in fabrication and meeting scheduled test dates at the test facility. A conical bit was tested in a Carthage Marble (compressive strength 14,500 psi) and Sierra White Granite (compressive strength 28,200 psi). During the testing, Hydraulic Horsepower, Bit Weight, Rotation Rate, were varied for the Conical Bit, a Varel Tricone Bit and Varel PDC bit. The Conical Bi did cut rock at a reasonable rate in both rocks. Beneficial effects from the near and through cutter water nozzles were not evident in the marble due to test conditions and were not conclusive in the granite due to test conditions. At atmospheric drilling, the Conical Bit's penetration rate was as good as the standard PDC bit and better than the Tricone Bit. Torque requirements for the Conical Bit were higher than that required for the Standard Bits. Spudding the conical bit into the rock required some care to avoid overloading the nose cutters. The nose design should be evaluated to improve the bit's spudding characteristics.

  14. Environmental assessment of remedial action at the Slick Rock uranium mill tailings sites Slick Rock, Colorado. Draft

    SciTech Connect (OSTI)

    NONE

    1993-06-01T23:59:59.000Z

    The Uranium Mill Tailings Radiation Control Act of 1978 (UMTRCA) authorized the US Department of Energy (DOE) to clean up two uranium mill tailings processing sites near Slick Rock, Colorado, in San Miguel County. The purpose of the cleanup is to reduce the potential health effects associated with the radioactive materials remaining on the sites and on vicinity properties (VP) associated with the sites. The US Environmental Protection Agency (EPA) promulgated standards for the UMTRCA that contained measures to control the contaminated materials and to protect the groundwater from further degradation. Remedial actions at the Slick Rock sites must be performed in accordance with these standards and with the concurrence of the US Nuclear Regulatory Commission (NRC).

  15. Paradox of Peroxy Defects and Positive Holes in Rocks Part II: Outflow of Electric Currents from Stressed Rocks

    E-Print Network [OSTI]

    Scoville, John; Freund, Friedemann

    2015-01-01T23:59:59.000Z

    Understanding the electrical properties of rocks is of fundamental interest. We report on currents generated when stresses are applied. Loading the center of gabbro tiles, 30x30x0.9 cm$^3$, across a 5 cm diameter piston, leads to positive currents flowing from the center to the unstressed edges. Changing the constant rate of loading over 5 orders of magnitude from 0.2 kPa/s to 20 MPa/s produces positive currents, which start to flow already at low stress levels, rock-forming minerals. The peroxy break-up leads to positive holes h$^{\\bullet}$, i.e. electronic states associated with O$^-$ in a matrix of O$^{2-}$, plus electrons, e'. Propagating...

  16. 2 INVESTIGATION OF CRUDE OIL/BRINE/ROCK INTERACTION 2.1 EXPERIMENTAL STUDY OF CRUDE/BRINE/ROCK INTERACTION AT

    E-Print Network [OSTI]

    Schechter, David S.

    44 2 INVESTIGATION OF CRUDE OIL/BRINE/ROCK INTERACTION 2.1 EXPERIMENTAL STUDY OF CRUDE of imbibition or oil production rate, particularly after seven days or more aging time with oil. However in this section and expand the understanding of the interactions of the Spraberry reservoir rock, oil and brine

  17. Hazard investigation of the Portillo Rock Avalanche site, central Andes, Chile, using an integrated field mapping and numerical modelling approach

    E-Print Network [OSTI]

    be required to trigger another rockslide from the original source area. The rock slope was otherwise foundHazard investigation of the Portillo Rock Avalanche site, central Andes, Chile, using an integrated Chilean Andes This paper reports a detailed rock slope hazard investigation of the Portillo Rock Avalanche

  18. J. Numer. Anal. Meth. Geomech., 25, (2001), 1285-1303 DETERMINATION OF ROCK MASS STRENGTH PROPERTIES BY

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    2001-01-01T23:59:59.000Z

    - France SUMMARY A method for determining fractured rock mass properties is presented here on the basis rock mass depends on the properties of the intact rock and the fractures. The properties of the intact provide empirical estimations for mechanical properties of fractured rock masses (Barton et al.2

  19. INVESTIGATION OF SCALE EFFECTS IN HARD ROCKS Richard Simon, Dept of civil, geological & mining engng cole Polytechnique, Montral, Qubec, Canada

    E-Print Network [OSTI]

    Aubertin, Michel

    of mechanical properties when the tested volume changes. Usual approaches for estimating rock mass properties do increased. The results also highlight that the usual approaches to estimate rock mass properties from those in rock media usually requires the evaluation of the rock mass strength and deformation properties

  20. The Distinct Element Method - Application to Structures in Jointed Rock

    SciTech Connect (OSTI)

    Morris, J.P.; Glen, L.; Blair, S.; Heuze, F.

    2001-11-30T23:59:59.000Z

    The Distinct Element Method (DEM) is a meshfree method with applications to rock mechanics, mining sciences, simulations of nuclear repositories, and the stability of underground structures. Continuum mesh-based methods have been applied successfully to many problems in geophysics. Even if the geology includes fractures and faults, when sufficiently large length scales are considered a continuum approximation may be sufficient. However, a large class of problems exist where individual rock joints must be taken into account. This includes problems where the structures of interest have sizes comparable with the block size. In addition, it is possible that while the structure may experience loads which do no measurable damage to individual blocks, some joints may fail. This may launch smaller blocks as dangerous projectiles or even cause total failure of a tunnel. Traditional grid-based continuum approaches are wholly unsuited to this class of problem. It is possible to introduce discontinuities or slide lines into existing grid-based methods, however, such limited approaches can break down when new contacts form between blocks. The distinct element method (DEM) is an alternative, meshfree approach. The DEM can directly approximate the block structure of the jointed rock using arbitrary polyhedra. Using this approach, preexisting joints are readily incorporated into the DEM model. In addition, the method detects all new contacts between blocks resulting from relative block motion. We will describe the background of the DEM and review previous application of the DEM to geophysical problems. Finally we present preliminary results from a investigation into the stability of underground structures subjected to dynamic loading.

  1. A correlation of rock compressibility with temperature and pressure

    E-Print Network [OSTI]

    Choudhary, Bijoy Kumar

    1967-01-01T23:59:59.000Z

    reservoir rocks to higher temperatures. Tests were conducted on 17 specimens cut from 5 sandstone cores and 0 4 specimens cut from one limestone core at temperatures of 76 F, 0 0 0 200 F, 300 F, and 400 F and at pressures ranging from 100-14, 000 0 psi.... The net change in 0 0 pore volume from 100-14, 000 psi ranges between 4. 0 /o and 9. 6 /o 0 0 at room temperature and 5. 1 ? 14. 1 /o at 400 F. A definite trend was established between pore volume compressibility and porosity of the specimens tested...

  2. SEISMIC AND ROCK PHYSICS DIAGNOSTICS OF MULTISCALE RESERVOIR TEXTURES

    SciTech Connect (OSTI)

    Gary Mavko

    2002-05-01T23:59:59.000Z

    As part of our study on ''Relationships between seismic properties and rock microstructure'', we have studied (1) How to quantify elastic properties of clay minerals using Atomic Force Acoustic Microscopy. We show how bulk modulus of clay can be measured using atomic force acoustic microscopy (AFAM) (2) We have successfully measured elastic properties of unconsolidated sediments in an effort to quantify attributes for detection of overpressures from seismic (3) We have initiated efforts for velocity upscaling to quantify long-wavelength and short-wavelength velocity behavior and the scale-dependent dispersion caused by sediment variability in different depositional environments.

  3. Castle Rock, Colorado: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:EzfeedflagBiomassSustainableCSLInformationMissouri: Energy ResourcesCounty,Castalia,Rock,

  4. Category:Isotopic Analysis- Rock | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand JumpConceptual Model, click here. Category:Conceptual Model Add.pngpage?sourcehelpFluid Jump to:Rock

  5. Property:CapRockAge | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to: navigation,PillarPublicationType Jump to: navigation, search This isCapRockAge Jump to:

  6. Property:CapRockLithology | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to: navigation,PillarPublicationType Jump to: navigation, search This isCapRockAge Jump

  7. Rock Port, Missouri: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:Ezfeedflag JumpID-f < RAPID‎ |Rippey Jump to: navigation, searchRobbinsDensity AtRock

  8. RockPort Capital Partners (Massachusetts) | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:Ezfeedflag JumpID-f < RAPID‎ |Rippey Jump to: navigation,RockPort Capital Partners

  9. North Little Rock, Arkansas: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere I Geothermal Pwer PlantMunhall,Missouri: Energy ResourcesGranby, Connecticut: EnergyLaurel,Little Rock,

  10. Big Rock, Illinois: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:EzfeedflagBiomass ConversionsSouth Carolina:EnergyPark, Arizona: Energy Resources JumpRock,

  11. Rock Point, Arizona: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere IRaghuraji Agro Industries Pvt Ltd Jump to: navigation,MazeOhio:Ohio: Energy ResourcesRock Lab Analysis

  12. Rock River LLC Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere IRaghuraji Agro Industries Pvt Ltd Jump to: navigation,MazeOhio:Ohio: Energy ResourcesRock Lab Analysisin

  13. Rock Sampling At Chena Geothermal Area (Kolker, 2008) | Open Energy

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere IRaghuraji Agro Industries Pvt Ltd Jump to: navigation,MazeOhio:Ohio: Energy ResourcesRock Lab

  14. Rock Sampling At Coso Geothermal Area (1995) | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere IRaghuraji Agro Industries Pvt Ltd Jump to: navigation,MazeOhio:Ohio: Energy ResourcesRock Lab Activity Date

  15. Rock Sampling At Florida Mountains Area (Brookins, 1982) | Open Energy

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere IRaghuraji Agro Industries Pvt Ltd Jump to: navigation,MazeOhio:Ohio: Energy ResourcesRock Lab Activity

  16. RockPort Capital Partners (California) | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere IRaghuraji Agro Industries Pvt Ltd Jump to: navigation,MazeOhio:Ohio: Energy Jump to:RockPort Capital Partners

  17. City of Rock Falls, Illinois (Utility Company) | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand JumpConceptual Model, clickInformation Smyrna Beach, FloridaCity ofCity ofRiverside,CityRock

  18. Release of uranium and thorium from granitic rocks during in situ weathering and initial erosion 

    E-Print Network [OSTI]

    Ledger, Ernest Broughton

    1978-01-01T23:59:59.000Z

    their concentrations in unweathered or slightly weathered granitic rocks, soils developed on granitic rocks, and material from a granitic source transported by a local stream. "Uranium maps", obtained by fission track analysis, are used to understand the mode...RELEASE OF URANIUM AND THORIUM FROM GRANITIC ROCKS DURING IN SITU WEATHERING AND INITIAL EROSION A Thesis by ERNEST BROUGHTON LEDGER, JR. Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirement...

  19. Release of uranium and thorium from granitic rocks during in situ weathering and initial erosion

    E-Print Network [OSTI]

    Ledger, Ernest Broughton

    1978-01-01T23:59:59.000Z

    their concentrations in unweathered or slightly weathered granitic rocks, soils developed on granitic rocks, and material from a granitic source transported by a local stream. "Uranium maps", obtained by fission track analysis, are used to understand the mode... OF URANIUM AND THORIUM IN THE GRANITIC 17 19 30 30 31 38 SOURCE ROCKS . 44 REDISTRIBUTION OF URANIUM AND THORIUM IN GRANITIC MATERIALS DURING IN SITU WEATHERING AND INITIAL EROSION 77 CONCLUSIONS. REFERENCES APPENDIX VITA 105 108 112 113...

  20. Petrography and prediction of reservoir rock properties in the Sussex Sandstone, Powder River Basin, Wyoming

    E-Print Network [OSTI]

    Shirley, Richard Hoyt

    1977-01-01T23:59:59.000Z

    to determine rock composition and texture. Composition was established by point count of 100 grains. Framework grains were identified and counted as monocrystalline quartz, polycrystalline quartz, volcanic rock fragments, potassium feldspar, plagioclase... and quiet water deposition of shale was resumed. The sandstone is classified as a volcanic aronite based on a det: ital composition averaging 59 percent quartz, including both monccrystalline and polycrystalline varieties, 18 percent rock frag- ments...

  1. Fluid-Rock Characterization and Interactions in NMR Well Logging

    SciTech Connect (OSTI)

    Hirasaki, George J.; Mohanty, Kishore, K.

    2001-07-13T23:59:59.000Z

    The objective of this project is to characterize the fluid properties and fluid-rock interactions that are needed for formation evaluation by NMR well logging. This is the first annual progress report submitted to the DOE. It reports on the work completed during the reporting period even if it may have started before this period. This project is a partnership between Professor George J. Hirasaki at Rice University and Professor Kishore Mohanty at University of Houston. In addition to the DOE, this project is supported by a consortium of oil companies and service companies. The fluid properties characterization has emphasized the departure of live oils from correlations based on dead oils. Also, asphaltic components can result in a difference between the T1 and T2 relaxation time distributions as well as reduce the hydrogen index. The fluid rock characterizations that are reported here are the effects of wettability and internal magnetic field gradients. A pore reconstruction method ha s been developed to recreate three-dimensional porous media from two-dimensional images that reproduce some of their key statistical properties. A Monte Carlo simulation technique has been developed to calculate the magnetization decay in fluid saturated porous media given their pore structure.

  2. Fluid-Rock Characterization and Interactions in NMR Well Logging

    SciTech Connect (OSTI)

    George J. Hirasaki; Kishore K. Mohanty

    2005-09-05T23:59:59.000Z

    The objective of this report is to characterize the fluid properties and fluid-rock interactions that are needed for formation evaluation by NMR well logging. The advances made in the understanding of NMR fluid properties are summarized in a chapter written for an AAPG book on NMR well logging. This includes live oils, viscous oils, natural gas mixtures, and the relation between relaxation time and diffusivity. Oil based drilling fluids can have an adverse effect on NMR well logging if it alters the wettability of the formation. The effect of various surfactants on wettability and surface relaxivity are evaluated for silica sand. The relation between the relaxation time and diffusivity distinguishes the response of brine, oil, and gas in a NMR well log. A new NMR pulse sequence in the presence of a field gradient and a new inversion technique enables the T{sub 2} and diffusivity distributions to be displayed as a two-dimensional map. The objectives of pore morphology and rock characterization are to identify vug connectivity by using X-ray CT scan, and to improve NMR permeability correlation. Improved estimation of permeability from NMR response is possible by using estimated tortuosity as a parameter to interpolate between two existing permeability models.

  3. ChemCam Rock Laser for the Mars Science Laboratory

    ScienceCinema (OSTI)

    LANL

    2009-09-01T23:59:59.000Z

    Los Alamos has a long history of space-related instr... Los Alamos has a long history of space-related instruments, tied primarily to its role in defense-related treaty verification. Space-based detectors have helped determine the differences between signals from lightning bolts and potential nuclear explosions. LANL-developed gamma-ray detection instruments first revealed the existence of what we now know as gamma-ray bursts, an exciting area of astrophysical research. And the use of LANL instruments on varied space missions continues with such products as the ChemCam rock laser for NASA, shown here. The Engineering Model of the ChemCam Mars Science Laboratory rover instrument arrived at NASA's Jet Propulsion Laboratory on February 6, 2008. ChemCam will use imaging and laser-induced breakdown spectroscopy (LIBS) to determine rock and soil compositions on Mars, up to 9 meters from the rover. The engineering model is being integrated into the rover test bed for the development and testing of the rover software. The actual flight model components are concurrently being assembled at Los Alamos and in Toulouse, France, and will be delivered to JPL in July. The Mars Science Laboratory is scheduled to launch in 2009. Animations courtesy of JPL/NASA.

  4. ChemCam rock laser for Mars Science Laboratory "Curiosity"

    ScienceCinema (OSTI)

    Wiens, Roger

    2014-08-12T23:59:59.000Z

    Los Alamos has a long history of space-related instruments, tied primarily to its role in defense-related treaty verification. Space-based detectors have helped determine the differences between signals from lightning bolts and potential nuclear explosions. LANL-developed gamma-ray detection instruments first revealed the existence of what we now know as gamma-ray bursts, an exciting area of astrophysical research. And the use of LANL instruments on varied space missions continues with such products as the ChemCam rock laser for NASA, shown here. The Engineering Model of the ChemCam Mars Science Laboratory rover instrument arrived at NASA's Jet Propulsion Laboratory on February 6, 2008. The Flight Model was shipped in August, 2010 for installation on the rover at JPL. ChemCam will use imaging and laser-induced breakdown spectroscopy (LIBS) to determine rock and soil compositions on Mars, up to 9 meters from the rover. The engineering model is being integrated into the rover test bed for the development and testing of the rover software. The actual flight model components were concurrently assembled at Los Alamos and in Toulouse, France. The Mars Science Laboratory is scheduled to launch in 2011. Animations courtesy of JPL/NASA.

  5. Micromachined low frequency rocking accelerometer with capacitive pickoff

    DOE Patents [OSTI]

    Lee, Abraham P. (Arlington, VA); Simon, Jonathon N. (San Leandro, CA); McConaghy, Charles F. (Livermore, CA)

    2001-01-01T23:59:59.000Z

    A micro electro mechanical sensor that uses capacitive readout electronics. The sensor involves a micromachined low frequency rocking accelerometer with capacitive pickoff fabricated by deep reactive ion etching. The accelerometer includes a central silicon proof mass, is suspended by a thin polysilicon tether, and has a moving electrode (capacitor plate or interdigitated fingers) located at each end the proof mass. During movement (acceleration), the tethered mass moves relative to the surrounding packaging, for example, and this defection is measured capacitively by a plate capacitor or interdigitated finger capacitor, having the cooperating fixed electrode (capacitor plate or interdigitated fingers) positioned on the packaging, for example. The micromachined rocking accelerometer has a low frequency (<500 Hz), high sensitivity (.mu.G), with minimal power usage. The capacitors are connected to a power supply (battery) and to sensor interface electronics, which may include an analog to digital (A/D) converter, logic, RF communication link, antenna, etc. The sensor (accelerometer) may be, for example, packaged along with the interface electronics and a communication system in a 2".times.2".times.2" cube. The proof mass may be asymmetric or symmetric. Additional actuating capacitive plates may be used for feedback control which gives a greater dynamic range.

  6. ' low-frequency seismic waves in 'fluid-saturated layered rocks

    E-Print Network [OSTI]

    papers report that reflection of low—frequency seismic. ' waves at a boundary between two ?uid-saturated rocks is not significantly modified by 'the presence of

  7. On White's model of attenuation in rocks with partial gas saturation

    E-Print Network [OSTI]

    Dutta, N. C.; Seriff, A. J.

    approximate theory for the calculation of attenuation and dispersion of compressional seismic waves in porous rocks filled mostly with brine but containing ...

  8. amphibolite rock-weathering activity: Topics by E-print Network

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

    and Formalization -- 12;DFT Nowak, Robert 51 Krivaja Konjuh Ophiolite Complex in Bosnia and Herzegovina Addition to Study on Mineral Composition of Metamorphic Rocks CiteSeer...

  9. Bibliography of the geological and geophysical aspects of hot dry rock geothermal resources

    SciTech Connect (OSTI)

    Heiken, G.; Sayer, S.

    1980-02-01T23:59:59.000Z

    This is the first issue of an annual compilation of references that are useful to the exploration, understanding and development of the hot dry rock geothermal resource.

  10. alpine-type ultramafic rocks: Topics by E-print Network

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

    interesting than whales's research interests include sustainable transportation, life-cycle assessment, and the national security Zhang, Junshan 146 ELASTIC ROCK PROPERTIES OF...

  11. GEOTECHNICAL ASSESSMENT AND INSTRUMENTATION NEEDS FOR NUCLEAR WASTE ISOLATION IN CRYSTALLINE AND ARGILLACEOUS ROCKS SYMPOSIUM

    E-Print Network [OSTI]

    Authors, Various

    2011-01-01T23:59:59.000Z

    Interactions between nuclear waste and surrounding rock.AND INSTRUMENTATION NEEDS FOR NUCLEAR WASTE ISOLATION INwill provide Office of Nuclear Waste Isolation and the

  12. Rock Sampling At Blue Mountain Geothermal Area (U.S. Geological...

    Open Energy Info (EERE)

    search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Rock Sampling At Blue Mountain Geothermal Area (U.S. Geological Survey, 2012) Exploration Activity Details...

  13. Pore-Scale Simulation Of Experimentally Realizable, Oscillatory Flow In Porous Rock

    E-Print Network [OSTI]

    Olson, John F.

    1999-01-01T23:59:59.000Z

    We report new simulations of oscillating flow in porous rock. Our goal is to better understand the frequency dependence of pore-scale fluid motion, which should ultimately

  14. Rock, Mineral, Coal, Oil, and Gas Resources on State Lands (Montana)

    Broader source: Energy.gov [DOE]

    This chapter authorizes and regulates prospecting permits and mining leases for the exploration and development of rock, mineral, oil, coal, and gas resources on state lands.

  15. SciTech Connect: Comparison of the effects in the rock mass of...

    Office of Scientific and Technical Information (OSTI)

    surface), destruction of the rock massif near explosion centre, creation of the stress wave, which forms seismoexplosive effect a long distance from explosion epicentre....

  16. On the relationship between stress and elastic strain for porous and fractured rock

    E-Print Network [OSTI]

    Liu, Hui-Hai

    2009-01-01T23:59:59.000Z

    permeability of sandstones. Petrol Trans AIME 1958;213:430–sedimentary rock. Am Assoc Petrol Geol Bull 1930;14:1–24. [

  17. A Sr-Isotopic Comparison Between Thermal Waters, Rocks, And Hydrotherm...

    Open Energy Info (EERE)

    Sr-Isotopic Comparison Between Thermal Waters, Rocks, And Hydrothermal Calcites, Long Valley Caldera, California Jump to: navigation, search OpenEI Reference LibraryAdd to library...

  18. Source and tectono-metamorphic evolution of mafic and pelitic metasedimentary rocks from the central Quetico metasedimentary belt, Archean Superior Province

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Source and tectono-metamorphic evolution of mafic and pelitic metasedimentary rocks from, was conducted in order to evaluate the origin, source and evolution of sedimentary rocks, including mafic rocks previously mapped as ultramafics rocks. Bulk chemical compositions of these rocks show a mixing with two end

  19. CO/sub 2/ foam flooding performance vs. rock wettability

    SciTech Connect (OSTI)

    Lescure, B.M.; Claridge, E.L.

    1986-01-01T23:59:59.000Z

    CO/sub 2/ flooding projects have shown large potential for oil recovery, but in many cases the volumetric sweep efficiency is greatly limited by gravity tonguing and/or viscous fingering. To reduce these effects foam could be used as an alternative to WAG CO/sub 2/ injection. Experiments on the CO/sub 2/ foam process were conducted in a 1/4 5-spot reservoir model in order to investigate the effect of rock wetting state and total CO/sub 2/ slug size on secondary and tertiary extra-oil recovery. Laboratory model results show that the process is more successful in an oil-wet medium than in a water-wet medium due to larger surfactant adsorption in the water-wet medium. Also, requirements for optimal CO/sub 2/ slug size are smaller than in the WAG process, with larger extra oil recovery for both secondary and tertiary floods.

  20. Constitutive Theory for Velocity Dispersion in Rock with Dual Porosity

    SciTech Connect (OSTI)

    Wang, H F; Berryman, J G

    2002-03-28T23:59:59.000Z

    The high frequency behavior of the bulk modulus of fluid-saturated rock can be obtained from a double-porosity constitutive model, which is a direct conceptual extension of Biot's (1941) constitutive equations and which provides additional stiffening due to unrelaxed induced pore pressures in the soft porosity phase. Modeling the stiffening of the shear modulus at high frequency requires an effective medium average over the unequal induced pore pressures in cracks of different orientations. The implicit assumptions are that pore fluid equilibration does not occur between cracks of different orientations and between cracks and porous matrix. The correspondence between the constitutive equations of Berryman and Wang (1995) and Mavko and Jizba (1991) is explicitly noted.

  1. Predicting stress-induced velocity anisotropy in rocks

    SciTech Connect (OSTI)

    Mavko, G.; Mukerji, T.; Godfrey, N. [Stanford Univ., CA (United States). Rock Physics Lab.] [Stanford Univ., CA (United States). Rock Physics Lab.

    1995-07-01T23:59:59.000Z

    A simple transformation, using measured isotropic V{sub P} and V{sub S} versus hydrostatic pressure, is presented for predicting stress-induced seismic velocity anisotropy in rocks. The compliant, crack-like portions of the pore space are characterized by generalized compressional and shear compliances that are estimated form the isotropic V{sub P} and V{sub S}. The physical assumption that the compliant porosity is crack-like means that the pressure dependence of the generalized compliances is governed primarily by normal tractions resolved across cracks and defects. This allows the measured pressure dependence to be mapped form the hydrostatic stress state to any applied nonhydrostatic stress. Predicted P- and S-wave velocities agree reasonably well with uniaxial stress data for Barre Granite and Massillon Sandstone. While it is mechanically similar to methods based on idealized ellipsoidal cracks, the approach is relatively independent of any assumed crack geometry and is not limited to small crack densities.

  2. Labyrinthine clustering in a spatial rock-paper-scissors ecosystem

    E-Print Network [OSTI]

    Juul, Jeppe; Mathiesen, Joachim

    2012-01-01T23:59:59.000Z

    The spatial rock-paper-scissors ecosystem, where three species interact cyclically, is a model example of how spatial structure can maintain biodiversity. We here consider such a system for a broad range of interaction rates. When one species grows very slowly, this species and its prey dominate the system by self-organizing into a labyrinthine configuration in which the third species propagates. The cluster size distributions of the two dominating species have heavy tails and the configuration is stabilized through a complex, spatial feedback loop. We introduce a new statistical measure that quantifies the amount of clustering in the spatial system by comparison with its mean field approximation. Hereby, we are able to quantitatively explain how the labyrinthine configuration slows down the dynamics and stabilizes the system.

  3. Seismic-Scale Rock Physics of Methane Hydrate

    SciTech Connect (OSTI)

    Amos Nur

    2009-01-08T23:59:59.000Z

    We quantify natural methane hydrate reservoirs by generating synthetic seismic traces and comparing them to real seismic data: if the synthetic matches the observed data, then the reservoir properties and conditions used in synthetic modeling might be the same as the actual, in-situ reservoir conditions. This approach is model-based: it uses rock physics equations that link the porosity and mineralogy of the host sediment, pressure, and hydrate saturation, and the resulting elastic-wave velocity and density. One result of such seismic forward modeling is a catalogue of seismic reflections of methane hydrate which can serve as a field guide to hydrate identification from real seismic data. We verify this approach using field data from known hydrate deposits.

  4. Rock Island Dam Smolt Monitoring; 1996 Annual Report.

    SciTech Connect (OSTI)

    McDonald, Robert (Chelan County Public Utility District No. 1, Power Operations Department, Wenatchee, WA)

    1996-10-01T23:59:59.000Z

    Downstream migrating salmon and steelhead (Oncoryhnchus spp.) smolts were monitored at the Rock Island Dam bypass trap from April 1--August 31, 1996. This was the twelfth consecutive year that the bypass trap was monitored. Data collected included: (1) number of fish collected by species, (2) number of fin clipped and/or Passive Integrated Transponder (PIT) tagged fish caught by species, (3) total number of fish showing signs of gas bubble trauma (GBT), (4) percent of descaled fish, and (5) daily average river flow, powerhouse {number_sign}1 flow, powerhouse {number_sign}2 flow and daily average spill. These data were transmitted to the Fish Passage Center (FPC), which manages the Smolt Monitoring Program throughout the Columbia River Basin. The Smolt Monitoring Program is used to manage the water budget, releasing upstream reservoir water storage allocated to supplement river flows during the downstream migration of juvenile salmonids.

  5. Sedimentary basin geochemistry and fluid/rock interactions workshop

    SciTech Connect (OSTI)

    NONE

    1991-12-31T23:59:59.000Z

    Fundamental research related to organic geochemistry, fluid-rock interactions, and the processes by which fluids migrate through basins has long been a part of the U.S. Department of Energy Geosciences program. Objectives of this program were to emphasize those principles and processes which would be applicable to a wide range of problems associated with petroleum discovery, occurrence and extraction, waste disposal of all kinds, and environmental management. To gain a better understanding of the progress being made in understanding basinal fluids, their geochemistry and movement, and related research, and to enhance communication and interaction between principal investigators and DOE and other Federal program managers interested in this topic, this workshop was organized by the School of Geology and Geophysics and held in Norman, Oklahoma in November, 1991.

  6. Numerical Modelling of Unsaturated Flow in Uniform and Heterogeneous Waste Rock Piles

    E-Print Network [OSTI]

    Aubertin, Michel

    Numerical Modelling of Unsaturated Flow in Uniform and Heterogeneous Waste Rock Piles O Fala1 , M Aubertin1,3 , J Molson1 , B Bussière2,3 , G W Wilson4 , R Chapuis1 and V Martin1 ABSTRACT Waste rock piles these piles, many physical, geochemical and biological processes can contribute to the production of AMD

  7. NUMERICAL SIMULATIONS OF LONG TERM UNSATURATED FLOW AND ACID MINE DRAINAGE AT WASTE ROCK PILES

    E-Print Network [OSTI]

    Aubertin, Michel

    NUMERICAL SIMULATIONS OF LONG TERM UNSATURATED FLOW AND ACID MINE DRAINAGE AT WASTE ROCK PILES Omar representative) waste rock piles and using observed climatic recharge data. The simulations were used to help are applied each year at the top of the piles, the water content profiles become periodic after a few years

  8. Mineralogical characterization of protolith and fault rocks from the SAFOD Main Hole

    E-Print Network [OSTI]

    Mineralogical characterization of protolith and fault rocks from the SAFOD Main Hole John G. Solum influence is not yet fully known. Faults containing these mineralogical phases are prime candidates), Mineralogical characterization of protolith and fault rocks from the SAFOD Main Hole, Geophys. Res. Lett., 33, L

  9. RoBOT: "Rocks Beneath Our Toes" An experiential learning opportunity in mineralogy and geochemistry

    E-Print Network [OSTI]

    Baxter, Ethan F.

    RoBOT: "Rocks Beneath Our Toes" An experiential learning opportunity in mineralogy with Boston University undergraduates to analyze the mineralogy and unravel the unique story that each rock into modern scientific methods of geochemistry and mineralogy and to unlock for them the exciting

  10. LABORATORY INVESTIGATIONS ON THE HYDRAULIC AND THERMOMECHANICAL PROPERTIES OF FRACTURED CRYSTALLINE ROCKS

    E-Print Network [OSTI]

    Witherspoon, P.A.

    2010-01-01T23:59:59.000Z

    of in s i t u j o i n t e d granite." I n t . J . Rock Mech.1979. "Waste disposal i n granite: Preliminary r e s u l t sintact samples of basalt, granite, marble, and other rocks.

  11. Isotope systematics of ore-bearing granites and host rocks of the Orlovka-Spokoinoe mining

    E-Print Network [OSTI]

    Siebel, Wolfgang

    Isotope systematics of ore-bearing granites and host rocks of the Orlovka-Spokoinoe mining district and Spokoinoe granite massifs and their host rocks in the Orlovka- Spokoinoe mining district, Eastern Transbaikalia, Russia. Pb isotope analyses indicate one common Pb source for all three granite massifs

  12. A CROSS-HOLE INVESTIGATION OF A ROCK MASS SUBJECTED TO HEATING

    E-Print Network [OSTI]

    Paulsson, B.N.P.

    2010-01-01T23:59:59.000Z

    OF A ROCK MASS SUBJECTED TO HEATING B.N.P. Paulsson and M.S.A ROCK MASS SUBJECTED TO HEATING B.N.P. Paulsson* and M.S.t o sus­ tained heating i s reported. Compressional and

  13. Eric Moulton, Ferri Hassani, Pejman Nekoovaght Microwave-Assisted Heating in Rock

    E-Print Network [OSTI]

    Barthelat, Francois

    Eric Moulton, Ferri Hassani, Pejman Nekoovaght Microwave-Assisted Heating in Rock INTRODUCTION to expensive replacements. Expansive heating through microwaves breaks up the rock, which reduces the stress the mechanisms and parameters governing the heating rate of a material. Department of Mining and Materials

  14. Hot Dry Rock Geothermal Energy Development in the USA David Duchane and Donald Brown

    E-Print Network [OSTI]

    1 Hot Dry Rock Geothermal Energy Development in the USA by David Duchane and Donald Brown Los of the world's store of geothermal energy. The real potential for growth in the use of geothermal energy lies-engineered geothermal reservoir in hot, crystalline rock by the application of hydraulic fracturing techniques

  15. Final Report: Geothermal Dual Acoustic Tool for Measurement of Rock Stress

    SciTech Connect (OSTI)

    Normann, Randy A.

    2014-12-01T23:59:59.000Z

    This paper outlines the technology need for a rock formation stress measurement in future EGS wells. This paper reports on the results of work undertaken under a Phase I, DOE/SBIR on the feasibility to build an acoustic well logging tool for measuring rock formation stress.

  16. Hydrochemical Impacts of Limestone Rock Mining Ghinwa M. Naja & Rosanna Rivero &

    E-Print Network [OSTI]

    Demers, Nora Egan

    . 2002). Even though the environmental impacts of ore and coal mining have been adequately investigatedHydrochemical Impacts of Limestone Rock Mining Ghinwa M. Naja & Rosanna Rivero & Stephen E. Davis B.V. 2010 Abstract Hydrochemical impacts of shallow rock industrial-scale mining activities close

  17. Geological Attributes from Conventional Well Logs: Relating Rock Types to Depositional Facies in Deepwater Turbidite Reservoirs

    E-Print Network [OSTI]

    Torres-Verdín, Carlos

    SPE 166178 Geological Attributes from Conventional Well Logs: Relating Rock Types to Depositional. The objective of this paper is to quantitatively classify rock and bed types based on conventional well logs to assist facies interpretation and stratigraphic reservoir modeling. We model physical properties and well

  18. Diffusion-driven extreme lithium isotopic fractionation in country rocks of the Tin Mountain pegmatite

    E-Print Network [OSTI]

    Mcdonough, William F.

    Diffusion-driven extreme lithium isotopic fractionation in country rocks of the Tin Mountain rocks (amphibolites and schists) of the Tin Mountain pegmatite show systematic changes with distance; fluid infiltration; Tin Mountain pegmatite 1. Introduction Lithium is a fluid-mobile, moderately

  19. RIS-M-2260 HEAT GRADIENT INDUCED MIGRATION OF BRINE INCLUSIONS IN ROCK SALT

    E-Print Network [OSTI]

    RISØ-M-2260 HEAT GRADIENT INDUCED MIGRATION OF BRINE INCLUSIONS IN ROCK SALT Mathematical treatment project. Abstract. A mathematical model for the brine migration in rock salt around an infinite line heat source is set up. The tempera- ture field around the time dependent heat source is calculated by use

  20. Organic carbon sources and transformations in mangrove sediments: A Rock-Eval pyrolysis approach

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Organic carbon sources and transformations in mangrove sediments: A Rock-Eval pyrolysis approach C'Orléans, CNRS/INSU, Université d'Orléans, 1A rue de la Férollerie, 45071 Orléans, France Abstract A Rock cycling in this specific environment using a method that allows monitoring the depth evolution of sources

  1. Assimilation of Ultramafic Rock in Subduction-Related Magmatic Arcs Author(s): Peter B. Kelemen

    E-Print Network [OSTI]

    Assimilation of Ultramafic Rock in Subduction-Related Magmatic Arcs Author(s): Peter B. Kelemen Source: The Journal of Geology, Vol. 94, No. 6 (Nov., 1986), pp. 829-843 Published by: The University. http://www.jstor.org #12;ASSIMILATION OF ULTRAMAFIC ROCK IN SUBDUCTION-RELATED MAGMATIC ARCS1 PETER B

  2. Characterizing Hydraulic Properties and Ground-Water Chemistry in Fractured-Rock Aquifers: A User's Manual

    E-Print Network [OSTI]

    Characterizing Hydraulic Properties and Ground-Water Chemistry in Fractured-Rock Aquifers: A User source for science about the Earth, its natural and living resources, natural hazards., 2007, Characterizing hydraulic properties and ground-water chemistry in fractured-rock aquifers: A user

  3. TERRESTRIAL ROCK VARNISH: A KEY TO UNDERSTANDING THE SURFACE COMPOSITION OF MARS. J. G. Ward1

    E-Print Network [OSTI]

    Kirkland, Laurel

    TERRESTRIAL ROCK VARNISH: A KEY TO UNDERSTANDING THE SURFACE COMPOSITION OF MARS. J. G. Ward1 , L produces a strong spectral band contrast. This also gives varnish its shiny appearance. On Earth rock varnish may have a microbial origin [3]. Clays are transported from an external source and deposited

  4. Rock magnetic investigation of possible sources of the Bangui magnetic anomaly1 , M., Quesnel2*

    E-Print Network [OSTI]

    Boyer, Edmond

    Rock magnetic investigation of possible sources of the Bangui magnetic anomaly1 2 Ouabego1,2 , M slices of such28 metamorphic rocks, or by an iron-rich mafic source, or by a combination of these two29 source using constraints19 from satellite and ground magnetic field measurements, as well as from surface

  5. alternative is rock or other noncombustible material; avoid bark or wood chip mulch in

    E-Print Network [OSTI]

    alternative is rock or other noncombustible material; avoid bark or wood chip mulch in this area. 6 needles and leaves to eliminate an ignition source for firebrands, especially during the hot, dry weather escape drill. Know where safety areas are within your subdivision. Meadows, rock outcrops, and wide roads

  6. SOURCES AND EFFECTS OF MINING-RELATED AND NATURAL ACID ROCK DRAINAGE QUANTIFIED USING TRACER

    E-Print Network [OSTI]

    Ryan, Joe

    SOURCES AND EFFECTS OF MINING-RELATED AND NATURAL ACID ROCK DRAINAGE QUANTIFIED USING TRACER, and Architectural Engineering 2006 #12;ii This thesis entitled: Sources and Effects of Mining-Related and Natural Acid Rock Drainage Quantified Using Tracer Dilution, Coal Creek Watershed, Gunnison County, Colorado

  7. Expressing Realtime Properties in VSE-II Werner Stephan Andreas Nonnengart Georg Rock

    E-Print Network [OSTI]

    Nonnengart, Andreas

    Expressing Realtime Properties in VSE-II Werner Stephan Andreas Nonnengart Georg Rock German stephan,nonnengart,rock¡ @dfki.de 1 INTRODUCTION It is well known that in many cases severe errors occur system properties. However, specialized description techniques are needed to treat certain aspects

  8. Category: Subsurface Hydrology Theoretical prediction of poroelastic properties of argillaceous rocks

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    have to be measured with accuracy. Index terms: Physical properties of rocks: 5199 GeneralCategory: Subsurface Hydrology Theoretical prediction of poroelastic properties of argillaceous rocks from in situ specific storage coefficient Ph. Cosenza1 '2 , M. Ghoreychi3 , G. de Marsily \\ G

  9. Analysis of a mesoscale infiltration and water seepage test in unsaturated fractured rock: Spatial variabilities

    E-Print Network [OSTI]

    Zhou, Quanlin

    Analysis of a mesoscale infiltration and water seepage test in unsaturated fractured rock: Spatial 2006 Abstract A mesoscale (21 m in flow distance) infiltration and seepage test was recently conducted flow in fractured rock at mesoscale or a larger scale is not necessarily conditional explicitly

  10. Pore fluid effects on seismic velocity in anisotropic rocks

    SciTech Connect (OSTI)

    Mukerji, T.; Mavko, G. (Stanford Univ., CA (United States). Dept. of Geophysics)

    1994-02-01T23:59:59.000Z

    A simple new technique predicts the high- and low-frequency saturated velocities in anisotropic rocks entirely in terms of measurable dry rock properties without the need for idealized crack geometries. Measurements of dry velocity versus pressure and porosity versus pressure contain all of the necessary information for predicting the frequency-dependent effects of fluid saturation. Furthermore, these measurements automatically incorporate all pore interaction, so there is no limitation to low crack density. The velocities are found to depend on five key interrelated variables: frequency, the distribution of compliant crack-like porosity, the intrinsic or noncrack anisotropy, fluid viscosity and compressibility, and effective pressure. The sensitivity of velocities to saturation is generally greater at high frequencies than low frequencies. The magnitude of the differences from dry to saturated and from low frequency to high frequency is determined by the compliant or crack-like porosity. Predictions of saturated velocities based on dry data for sandstone and granite show that compressional velocities generally increase with saturation and with frequency. However, the degree of compressional wave anisotropy may either increase or decrease upon saturation depending on the crack distribution, the effective pressure, and the frequency at which the measurements are made. Shear-wave velocities can either increase or decrease with saturation, and the degree of anisotropy depends on the microstructure, pressure, and frequency. Consequently great care must be taken when interpreting observed velocity anisotropy for measurements at low frequencies, typical of in situ observations, will generally be different from those at high frequencies, typical of the laboratory.

  11. Spatial statistics for predicting flow through a rock fracture

    SciTech Connect (OSTI)

    Coakley, K.J.

    1989-03-01T23:59:59.000Z

    Fluid flow through a single rock fracture depends on the shape of the space between the upper and lower pieces of rock which define the fracture. In this thesis, the normalized flow through a fracture, i.e. the equivalent permeability of a fracture, is predicted in terms of spatial statistics computed from the arrangement of voids, i.e. open spaces, and contact areas within the fracture. Patterns of voids and contact areas, with complexity typical of experimental data, are simulated by clipping a correlated Gaussian process defined on a N by N pixel square region. The voids have constant aperture; the distance between the upper and lower surfaces which define the fracture is either zero or a constant. Local flow is assumed to be proportional to local aperture cubed times local pressure gradient. The flow through a pattern of voids and contact areas is solved using a finite-difference method. After solving for the flow through simulated 10 by 10 by 30 pixel patterns of voids and contact areas, a model to predict equivalent permeability is developed. The first model is for patterns with 80% voids where all voids have the same aperture. The equivalent permeability of a pattern is predicted in terms of spatial statistics computed from the arrangement of voids and contact areas within the pattern. Four spatial statistics are examined. The change point statistic measures how often adjacent pixel alternate from void to contact area (or vice versa ) in the rows of the patterns which are parallel to the overall flow direction. 37 refs., 66 figs., 41 tabs.

  12. Hot Dry Rock energy annual report fiscal year 1992

    SciTech Connect (OSTI)

    Winchester, W.W. [ed.; Duchane, D.V.

    1993-04-01T23:59:59.000Z

    Hot Dry Rock technology took a giant leap forward this year as the long-awaited long-term flow test (LTFT) of the Phase 2 HDR reservoir at Fenton Hill got underway. Energy was produced on a twenty-four hour a day basis for a continuous period of nearly four months of steady-state testing. Hot water was brought to the surface at 90--100 gallons per minute (gpm) with temperatures of 180{degrees}C (356{degrees}F) and higher. During that time, the HDR plant achieved an on-line record of 98.8%. Surface temperature measurements and temperature logging deep within the wellbore confirmed that no decline in the average temperature of fluid produced from the reservoir occurred. Tracer experiments indicated that flow paths within the reservoir were undergoing continuous change during the test. Remarkably, it appeared that longer flow paths carried a larger proportion of the flow as the test proceeded, while more direct fluid pathways disappeared or carried a significantly reduced flow. In sum, access to hot rock appeared to improve over the span of the test. Water losses during the test averaged 10--12% and showed a slow long-term decline. These results confirmed what had been previously discovered in static pressurization testing: Water consumption declines significantly during extended operation of an HDR reservoir. In combination with a recent demonstration by the Japanese that water losses can be greatly reduced by the proper placement of multiple production wells, the recent results at Fenton Hill have effectively demonstrated that excessive water consumption should not be an issue for a properly engineered HDR facility at a well chosen site.

  13. Hot Dry Rock energy annual report fiscal year 1992

    SciTech Connect (OSTI)

    Duchane, D.V.; Winchester, W.W.

    1993-04-01T23:59:59.000Z

    Hot Dry Rock technology took a giant leap forward this year as the long-awaited long-term flow test (LTFT) of the Phase II HDR reservoir at Fenton Hill got underway. Energy was produced on a twenty-four hour a day basis for a continuous period of nearly four months of steady-state testing. Hot water was brought to the surface at 90-100 gallons per minute (gpm) with temperatures of 180[degrees]C (356[degrees]F) and higher. During that time, the HDR plant achieved an on-line record of 98.8%. Surface temperature measurements and temperature logging deep within the wellbore confirmed that no decline in the average temperature of fluid produced from the reservoir occurred. Tracer experiments indicated that flow paths within the reservoir were undergoing continuous change during the test. Remarkably, it appeared that longer flow paths carried a larger proportion of the flow as the test proceeded, while more direct fluid pathways disappeared or carried a significantly reduced flow. In sum, access to hot rock appeared to improve over the span of the test. Water losses during the test averaged 10-12% and showed a slow long-term decline. These results confirmed what had been previously discovered in static pressurization testing: Water consumption declines significantly during extended operation of an HDR reservoir. In combination with a recent demonstration by the Japanese that water losses can be greatly reduced by the proper placement of multiple production wells, the recent results at Fenton Hill have effectively demonstrated that excessive water consumption should not be an issue for a properly engineered HDR facility at a well chosen site.

  14. Permeability and Dispersion Coefficients in Rocks with Fracture Network - 12140

    SciTech Connect (OSTI)

    Lee, C.K.; Htway, M.Z. [Handong Global University, 3 Namsong-ri, Heunghae-eub, Buk-gu, Pohang, Kyungbuk, 791-708 (Korea, Republic of); Yim, S.P. [Korea Atomic Energy Research Institute, P.O.Box 150, Yusong, Daejon, 305-600 (Korea, Republic of)

    2012-07-01T23:59:59.000Z

    Fluid flow and solute transport are considered for a rock medium with a fracture network with regard to the effective permeability and the dispersion coefficients. To investigate the effects of individual fractures a three-fracture system is chosen in which two are parallel and the third one connects the two at different angles. Specifically the micro-cell boundary-value problems(defined through multiple scale analysis) are solved numerically by using finite elements to calculate the permeability and dispersion coefficients. It is shown that the permeability depends significantly on the pattern of the fracture distribution and the dispersion coefficient is influenced by both the externally imposed pressure gradient (which also reflects the flow field) and the direction of the gradient of solute concentration on the macro-scale. From the calculations of the permeability and dispersion coefficients for solute in a rock medium with a fracture network the following conclusions are drawn. 1. The permeability of fractured medium depends on the primary orientation of the fracture network and is influenced by the connecting fractures in the medium. 2. The cross permeability, e.g., permeability in the direction normal to the direction of the external pressure gradient is rather insensitive to the orientation of the fracture network. 3. Calculation of permeability is most efficiently achieved with optimal discretization across individual fractures and is rather insensitive to the discretization along the fracture.. 4. The longitudinal dispersion coefficient Dxx of a fractured medium depends on both the macro-scale concentration gradient and the direction of the flow (pressure gradient). Hence both features must be considered when investigating solute transport in a fractured medium. (authors)

  15. Organic solvent alteration of hydraulic properties of sedimentary rocks of low permeability: a review

    SciTech Connect (OSTI)

    Sklarew, D.S.

    1985-05-01T23:59:59.000Z

    A review of the current literature on hydrophysical interactions of organic solutes with sedimentary rocks of low permeability is presented. The motivation was the premise that low permeability rocks may act as secondary (aquifer) barriers for the containment of hazardous organic wastes, thus preventing these wastes from contaminating the groundwater. However, this premise may be incorrect if organic wastes can affect the hydraulic conductivity of these rocks. The results indicate that very little work has been done concerning interactions of organics with consolidated subsurface materials. Available information on three related topics was summarized: the effect of organic compounds on the hydrophysical properties of clays, case studies concerning the interactions of organic compounds with clays and sedimentary rocks, and the effect of shales on inorganic transport. These studies give an indication of some research areas that need to be explored with regard to the effect of organic compounds on the hydrophysical properties of sedimentary rocks; these research needs are briefly summarized. 42 refs.

  16. Laser rock drilling by a super-pulsed CO{sub 2} laser beam.

    SciTech Connect (OSTI)

    Xu, Z.; Reed, C. B.; Parker, R. A.; Gahan, B. C.; Graves, R. M.; Figueroa, H.

    2002-08-12T23:59:59.000Z

    High power carbon dioxide lasers have successfully been used in drilling or cutting engineering materials such as metals, polymers and ceramics over the years. Can a carbon dioxide laser be used to efficiently drill different rocks in a deep gas well? Research sponsored by US Department of Energy has been carried out to answer this question. This paper will report the study results of using a super-pulsed CO{sub 2} laser beam to drill rocks. A 6 kW CO{sub 2} laser operated at superpulse mode was used to carry out the tests. Both linear tracks and deep holes were produced on the rocks. The energy required to remove a unit volume of rock, specific energy, was determined. Test results show that superpulsed CO{sub 2} laser beam can be efficiently used to drill deep, large diameter holes in petroleum rocks with the assistance of purging gas.

  17. Use of ``rock-typing`` to characterize carbonate reservoir heterogeneity. Final report

    SciTech Connect (OSTI)

    Ikwuakor, K.C.

    1994-03-01T23:59:59.000Z

    The objective of the project was to apply techniques of ``rock-typing`` and quantitative formation evaluation to borehole measurements in order to identify reservoir and non-reservoir rock-types and their properties within the ``C`` zone of the Ordovician Red River carbonates in the northeast Montana and northwest North Dakota areas of the Williston Basin. Rock-typing discriminates rock units according to their pore-size distribution. Formation evaluation estimates porosities and pore fluid saturation. Rock-types were discriminated using crossplots involving three rock-typing criteria: (1) linear relationship between bulk density and porosity, (2) linear relationship between acoustic interval transit-time and porosity, and (3) linear relationship between acoustic interval transit-time and bulk density. Each rock-type was quantitatively characterized by the slopes and intercepts established for different crossplots involving the above variables, as well as porosities and fluid saturations associated with the rock-types. All the existing production was confirmed through quantitative formation evaluation. Highly porous dolomites and anhydritic dolomites contribute most of the production, and constitute the best reservoir rock-types. The results of this study can be applied in field development and in-fill drilling. Potential targets would be areas of porosity pinchouts and those areas where highly porous zones are downdip from non-porous and tight dolomites. Such areas are abundant. In order to model reservoirs for enhanced oil recovery (EOR) operations, a more localized (e.g. field scale) study, expanded to involve other rock-typing criteria, is necessary.

  18. Szczepanik, Z., Milne, D., Kostakis, K., Eberhardt, E. Long Term Laboratory Strength Tests in Hard Rock. ISRM 2003Technology roadmap for rock mechanics, South African Institute of Mining and Metallurgy, 2003.

    E-Print Network [OSTI]

    and Metallurgy, 2003. Long Term Laboratory Strength Tests in Hard Rock Z. Szczepanik* , D. Milne* , K. Kostakis

  19. Fluid origins, paths, and fluid-rock reactions at convergent margins, using halogens, Cl stable isotopes, and alkali metals as geochemical tracers

    E-Print Network [OSTI]

    Wei, Wei

    2007-01-01T23:59:59.000Z

    range kg/yr Cl sources and sinks Water or rock mass mol/kgtemperature at the source of fluid-rock reactions, asto identify the fluid-rock reactions at source. In addition,

  20. Effectiveness of rock wall terraces on soil conservation and crop performance in a southern Honduras steepland farming system

    E-Print Network [OSTI]

    Sierra, Hector Enrique

    1996-01-01T23:59:59.000Z

    The effect that rock wall terraces have on soil and water conservation and crop production was studied on a steepland farm in southern Honduras during the 1995 growing season. The research compared a site with 10 year old rock terraces...

  1. Modeling of coupled thermodynamic and geomechanical performance of underground compressed air energy storage (CAES) in lined rock caverns

    E-Print Network [OSTI]

    Rutqvist, J.

    2013-01-01T23:59:59.000Z

    reservoir storage project in Sesta, Italy [1]; as well as two pilot tests in rock caverns associated with abandoned

  2. Rock-glacier dynamics and magnitudefrequency relations of debris flows in a high-elevation watershed: Ritigraben, Swiss Alps

    E-Print Network [OSTI]

    Stoffel, Markus

    Rock-glacier dynamics and magnitude­frequency relations of debris flows in a high rock glacier (Valais, Swiss Alps) with magnitude­frequency (M­F) relationships of debris flows recorded in the Ritigraben torrent originating at the rock-glacier front. Debris production and volumetric changes

  3. Isotopic evidence of a near surface history for the source rocks of the central Coast Plutonic Complex, British Columbia, Canada

    E-Print Network [OSTI]

    Wetmore, Paul H.

    Isotopic evidence of a near surface history for the source rocks of the central Coast Plutonic portion of the source rocks resided at near surface levels at some time prior to burial and partial an evolved crustal source. We argue that these data indicate that the rocks that formed the source region

  4. A LARGE ROCK AVALANCHE ONTO MORSRJKULL GLACIER, SOUTH-EAST ICELAND. ITS IMPLICATIONS FOR ICE-SURFACE EVOLUTION

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    , indicating a rapid process. Photogrammetric studies of the source-area estimates the volume of the rock1 A LARGE ROCK AVALANCHE ONTO MORSÁRJÖKULL GLACIER, SOUTH-EAST ICELAND. ITS IMPLICATIONS FOR ICE, IS-600 Akureyri, Iceland Abstract In spring 2007, a large rock avalanche descended onto

  5. Isotopic Evidence of a Near Surface History for the Source Rocks of the Central Coast Mountains Batholith, British

    E-Print Network [OSTI]

    Wetmore, Paul H.

    Isotopic Evidence of a Near Surface History for the Source Rocks of the Central Coast Mountains from 322 Ma to ~50 Ma indicate that the source regions for these rocks were relatively uniform and typical for island arcs around the Pacific. Initial whole-rock 87 Sr/86 Sr range from 0.7032 up to 0

  6. Geochemical evidence of a near-surface history for source rocks of the central Coast Mountains Batholith, British Columbia

    E-Print Network [OSTI]

    Wetmore, Paul H.

    Geochemical evidence of a near-surface history for source rocks of the central Coast Mountains to ,50 Ma, indicate that the source regions for these rocks were relatively uniform and typical abundance of deep crustal or upper-mantle source rocks (DePaolo 1981; Kistler 1990; Chen and Tilton 1991; De

  7. The application of multidimensional wavelets to unveiling multi-phase diagrams and in situ physical properties of rocks

    E-Print Network [OSTI]

    Vasilyev, Oleg V.

    properties of rocks Oleg V. Vasilyeva,*, Taras V. Geryab,c , David A. Yuend a Department of Mechanical of complicated realistic multi-phase diagrams and related in situ physical properties of rocks by using calculation of equilibrium phase assemblages and prediction of in situ physical properties of rocks [15

  8. Specific Methods for the Evaluation of Hydraulic Properties in Fractured Hard-rock J.C. Marchala,*

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    1 Specific Methods for the Evaluation of Hydraulic Properties in Fractured Hard-rock Aquifers J, marechal@ngri.res.in Abstract: Blocs underlined by fractures networks mainly compose hard-rock aquifers of hydraulic tests. Four different methods, well adapted to the complexity of groundwater flows in hard-rock

  9. The influence of crenulation cleavage development on the bulk elastic and seismic properties of phyllosilicate-rich rocks

    E-Print Network [OSTI]

    Vel, Senthil

    -rich, crustal rocks. We calculated the bulk elastic properties and resulting wave velocities for rock samplesThe influence of crenulation cleavage development on the bulk elastic and seismic properties of phyllosilicate-rich rocks Félice M.J. Naus-Thijssen a, , Andrew J. Goupee b , Scott E. Johnson a , Senthil S. Vel

  10. Crystallographic Preferred Orientations and Seismic Properties of Gabbroic Rocks Benot ILDEFONSE, David MAINPRICE & Cristina Maria GUSMO de BURGOS

    E-Print Network [OSTI]

    Demouchy, Sylvie

    Crystallographic Preferred Orientations and Seismic Properties of Gabbroic Rocks Benoît ILDEFONSE rocks are a key component of our understanding of the physical properties (rheology, seismic velocities of crystallographic fabrics in gabbroic rocks from the Oman ophiolite and from the lower crust at the South

  11. High resolution quantitative seismic imaging of a strike-slip fault with small vertical offset in clay-rocks from

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    modify the rock confining properties. In the Tournemire Experimental Platform (TEP, France), fault zones, 2005). However, long term confining properties of the clay-rock layers might be affected of argillaceous rocks and the draining properties of tectonic structures are key parameters for the safety

  12. Evaluation of Used Fuel Disposition in Clay-Bearing Rock

    SciTech Connect (OSTI)

    Jové Colón, Carlos F.; Weck, Philippe F.; Sassani, David H.; Zheng, Liange; Rutqvist, Jonny; Steefel, Carl I.; Kim, Kunhwi; Nakagawa, Seiji; Houseworth, James; Birkholzer, Jens; Caporuscio, Florie A.; Cheshire, Michael; Rearick, Michael S.; McCarney, Mary K.; Zavarin, Mavrik; Benedicto, Ana; Kersting, Annie B.; Sutton, Mark; Jerden, James; Frey, Kurt E.; Copple, Jacqueline M.; Ebert, William

    2014-08-29T23:59:59.000Z

    Radioactive waste disposal in shale/argillite rock formations has been widely considered given its desirable isolation properties (low permeability), geochemically reduced conditions, anomalous groundwater pressures, and widespread geologic occurrence. Clay/shale rock formations are characterized by their high content of clay minerals such as smectites and illites where diffusive transport and chemisorption phenomena predominate. These, in addition to low permeability, are key attributes of shale to impede radionuclide mobility. Shale host-media has been comprehensively studied in international nuclear waste repository programs as part of underground research laboratories (URLs) programs in Switzerland, France, Belgium, and Japan. These investigations, in some cases a decade or more long, have produced a large but fundamental body of information spanning from site characterization data (geological, hydrogeological, geochemical, geomechanical) to controlled experiments on the engineered barrier system (EBS) (barrier clay and seals materials). Evaluation of nuclear waste disposal in shale formations in the USA was conducted in the late 70’s and mid 80’s. Most of these studies evaluated the potential for shale to host a nuclear waste repository but not at the programmatic level of URLs in international repository programs. This report covers various R&D work and capabilities relevant to disposal of heat-generating nuclear waste in shale/argillite media. Integration and cross-fertilization of these capabilities will be utilized in the development and implementation of the shale/argillite reference case planned for FY15. Disposal R&D activities under the UFDC in the past few years have produced state-of-the-art modeling capabilities for coupled Thermal-Hydrological-Mechanical-Chemical (THMC), used fuel degradation (source term), and thermodynamic modeling and database development to evaluate generic disposal concepts. The THMC models have been developed for shale repository leveraging in large part on the information garnered in URLs and laboratory data to test and demonstrate model prediction capability and to accurately represent behavior of the EBS and the natural (barrier) system (NS). In addition, experimental work to improve our understanding of clay barrier interactions and TM couplings at high temperatures are key to evaluate thermal effects as a result of relatively high heat loads from waste and the extent of sacrificial zones in the EBS. To assess the latter, experiments and modeling approaches have provided important information on the stability and fate of barrier materials under high heat loads. This information is central to the assessment of thermal limits and the implementation of the reference case when constraining EBS properties and the repository layout (e.g., waste package and drift spacing). This report is comprised of various parts, each one describing various R&D activities applicable to shale/argillite media. For example, progress made on modeling and experimental approaches to analyze physical and chemical interactions affecting clay in the EBS, NS, and used nuclear fuel (source term) in support of R&D objectives. It also describes the development of a reference case for shale/argillite media. The accomplishments of these activities are summarized as follows: ? Development of a reference case for shale/argillite; ? Investigation of Reactive Transport and Coupled THM Processes in EBS: FY14; ? Update on Experimental Activities on Buffer/Backfill Interactions at elevated Pressure and Temperature; ? Thermodynamic Database Development: Evaluation Strategy, Modeling Tools, First-Principles Modeling of Clay, and Sorption Database Assessment; ? ANL Mixed Potential Model For Used Fuel Degradation: Application to Argillite and Crystalline Rock Environments.

  13. Hot dry rock geothermal energy. Draft final report

    SciTech Connect (OSTI)

    Not Available

    1994-09-01T23:59:59.000Z

    This second EPRI workshop on hot dry rock (HDR) geothermal energy, held in May 1994, focused on the status of worldwide HDR research and development and used that status review as the starting point for discussions of what could and should be done next: by U.S. federal government, by U.S. industry, by U.S. state governments, and by international organizations or through international agreements. The papers presented and the discussion that took place indicate that there is a community of researchers and industrial partners that could join forces, with government support, to begin a new effort on hot dry rock geothermal development. This new heat mining effort would start with site selection and confirmatory studies, done concurrently. The confirmatory studies would test past evaluations against the most current results (from the U.S. site at Fenton Hill, New Mexico, and from the two sites in Japan, the one in Russia, and the two in western Europe) and the best models of relevant physical and economic aspects. Site selection would be done in the light of the confirmatory studies and would be influenced by the need to find a site where success is probable and which is representative enough of other sites so that its success would imply good prospects for success at numerous other sites. The test of success would be circulation between a pair of wells, or more wells, in a way that confirmed, with the help of flow modeling, that a multi-well system would yield temperatures, flows and lifetimes that support economically feasible power generation. The flow modeling would have to have previously achieved its own confirmation from relevant data taken from both heat mining and conventional hydrothermal geothermal experience. There may be very relevant experience from the enhancement of ''hot wet rock'' sites, i.e., sites where hydrothermal reservoirs lack, or have come to lack, enough natural water or steam and are helped by water injected cold and produced hot. The new site would have to be selected in parallel with the confirmatory studies because it would have to be modeled as part of the studies and because its similarity to other candidate sites must be known well enough to assure that results at the selected site are relevant to many others. Also, the industry partners in the joint effort at the new site must be part of the confirmatory studies, because they must be convinced of the economic feasibility. This meeting may have brought together the core of people who can make such a joint effort take place. EPRI sponsored the organization of this meeting in order to provide utilities with an update on the prospects for power generation via heat mining. Although the emerging rules for electric utilities competing in power generation make it very unlikely that the rate-payers of any one utility (or small group of utilities) can pay the differential to support this new heat mining research and development effort, the community represented at this meeting may be able to make the case for national or international support of a new heat mining effort, based on the potential size and economics of this resource as a benefit for the nation as a whole and as a contribution to reduced emissions of fossil CO{sub 2} worldwide.

  14. Fracture and Healing of Rock Salt Related to Salt Caverns

    SciTech Connect (OSTI)

    Chan, K.S.; Fossum, A.F.; Munson, D.E.

    1999-03-01T23:59:59.000Z

    In recent years, serious investigations of potential extension of the useful life of older caverns or of the use of abandoned caverns for waste disposal have been of interest to the technical community. All of the potential applications depend upon understanding the reamer in which older caverns and sealing systems can fail. Such an understanding will require a more detailed knowledge of the fracture of salt than has been necessary to date. Fortunately, the knowledge of the fracture and healing of salt has made significant advances in the last decade, and is in a position to yield meaningful insights to older cavern behavior. In particular, micromechanical mechanisms of fracture and the concept of a fracture mechanism map have been essential guides, as has the utilization of continuum damage mechanics. The Multimechanism Deformation Coupled Fracture (MDCF) model, which is summarized extensively in this work was developed specifically to treat both the creep and fracture of salt, and was later extended to incorporate the fracture healing process known to occur in rock salt. Fracture in salt is based on the formation and evolution of microfractures, which may take the form of wing tip cracks, either in the body or the boundary of the grain. This type of crack deforms under shear to produce a strain, and furthermore, the opening of the wing cracks produce volume strain or dilatancy. In the presence of a confining pressure, microcrack formation may be suppressed, as is often the case for triaxial compression tests or natural underground stress situations. However, if the confining pressure is insufficient to suppress fracture, then the fractures will evolve with time to give the characteristic tertiary creep response. Two first order kinetics processes, closure of cracks and healing of cracks, control the healing process. Significantly, volume strain produced by microfractures may lead to changes in the permeability of the salt, which can become a major concern in cavern sealing and operation. The MDCF model is used in three simulations of field experiments in which indirect measures were obtained of the generation of damage. The results of the simulations help to verify the model and suggest that the model captures the correct fracture behavior of rock salt. The model is used in this work to estimate the generation and location of damage around a cylindrical storage cavern. The results are interesting because stress conditions around the cylindrical cavern do not lead to large amounts of damage. Moreover, the damage is such that general failure can not readily occur, nor does the extent of the damage suggest possible increased permeation when the surrounding salt is impermeable.

  15. Improved microstructure of cement-based composites through the addition of rock wool particles

    SciTech Connect (OSTI)

    Lin, Wei-Ting [Dept. of Civil Engineering, National Ilan University, Ilan 26047, Taiwan (China); Institute of Nuclear Energy Research, Atomic Energy Council, Taoyuan 32546, Taiwan (China); Cheng, An, E-mail: ancheng@niu.edu.tw [Dept. of Civil Engineering, National Ilan University, Ilan 26047, Taiwan (China); Huang, Ran; Zou, Si-Yu [Dept. of Harbor and River Engineering, National Taiwan Ocean University, Keelung 20224, Taiwan (China)

    2013-10-15T23:59:59.000Z

    Rock wool is an inorganic fibrous substance produced by steam blasting and cooling molten glass. As with other industrial by-products, rock wool particles can be used as cementitious materials or ultra fine fillers in cement-based composites. This study investigated the microstructure of mortar specimens produced with cement-based composites that include various forms of rock wool particles. It conducted compressive strength testing, rapid chloride penetration tests, X-ray diffraction analysis, thermo-gravimetric analysis, and scanning electronic microscopy to evaluate the macro- and micro-properties of the cement-based composites. Test results indicate that inclusion of rock wool particles in composites improved compressive strength and reduced chloride ion penetration at the age of 91 days due to the reduction of calcium hydroxide content. Microscopic analysis confirms that the use of rock wool particles contributed to the formation of a denser, more compact microstructure within the hardened paste. In addition, X-ray diffraction analysis shows few changes in formation of pozzolanic reaction products and no new hydrations are formed with incorporating rock wool particles. - Highlights: • We report the microstructural characterization of cement-based composites. • Different mixes produced with various rock wool particles have been tested. • The influence of different mixes on macro and micro properties has been discussed. • The macro properties are included compressive strength and permeability. • XRD and SEM observations confirm the pozzolanic reaction in the resulting pastes.

  16. On the Relationship between Stress and Elastic Strain for Porous and Fractured Rock

    SciTech Connect (OSTI)

    Liu, Hui-Hai; Rutqvist, Jonny; Berryman, James G.

    2008-02-25T23:59:59.000Z

    Modeling the mechanical deformations of porous and fractured rocks requires a stress-strain relationship. Experience with inherently heterogeneous earth materials suggests that different varieties of Hook's law should be applied within regions of the rock having significantly different stress-strain behavior, e.g., such as solid phase and various void geometries. We apply this idea by dividing a rock body conceptually into two distinct parts. The natural strain (volume change divided by rock volume at the current stress state), rather than the engineering strain (volume change divided by the unstressed rock volume), should be used in Hooke's law for accurate modeling of the elastic deformation of that part of the pore volume subject to a relatively large degree of relative deformation (i.e., cracks or fractures). This approach permits the derivation of constitutive relations between stress and a variety of mechanical and/or hydraulic rock properties. We show that the theoretical predictions of this method are generally consistent with empirical expressions (from field data) and also laboratory rock experimental data.

  17. Preliminary validation of rock mass models by comparison to laboratory frictional sliding experiments

    SciTech Connect (OSTI)

    Sobolik, S.R.; Miller, J.D.

    1996-09-01T23:59:59.000Z

    The U.S. Department of Energy`s (DOE) Yucca Mountain Site Characterization Project (YMP) is studying Yucca Mountain in southwestern Nevada as a potential site for a high-level nuclear waste repository. Site characterization will be facilitated by the construction of an Exploratory Studies Facility (ESF). The ESF and potential repository will be excavated from both nonwelded and welded ashflow tuff with varying rock quality (degree of welding, rock mass strength, etc.) and fault and fracture characteristics. Design concerns for the construction of these facilities include the integrity of the structure during underground testing operations and, if it occurs, the emplacement and storage of high-level nuclear waste which could increase the local temperatures in the underground rock mass to as high as 300{degrees}C. Because of the associated issues regarding personnel and long-term environmental safety, sophisticated jointed rock mass models will be required to provide a high degree of confidence for decisions regarding the design, site characterization, and licensing of such facilities. The objective of the work documented in this report is to perform code validation calculations for three rock-mass computer models. The three rock-mass computer models used for this report are the discrete element code UDEC, Version 1.82; and the finite element continuum joint models JAC2D Version 5.10 and JAS3D Version 1.1. The rock mass behavior predicted by the models are compared to the results of laboratory experiments on layered polycarbonate (Lexan) and granite plate experiments. These experiments examine the rock mass behavior of well-defined jointed rock structures or models of jointed structures under uniaxial and biaxial loading. The laboratory environment allows control over the boundary conditions, material properties, and quality and quantity of the data obtained.

  18. The thermal conductivity of rock under hydrothermal conditions: measurements and applications

    SciTech Connect (OSTI)

    Williams, Colin F.; Sass, John H.

    1996-01-24T23:59:59.000Z

    The thermal conductivities of most major rock-forming minerals vary with both temperature and confining pressure, leading to substantial changes in the thermal properties of some rocks at the high temperatures characteristic of geothermal systems. In areas with large geothermal gradients, the successful use of near-surface heat flow measurements to predict temperatures at depth depends upon accurate corrections for varying thermal conductivity. Previous measurements of the thermal conductivity of dry rock samples as a function of temperature were inadequate for porous rocks and susceptible to thermal cracking effects in nonporous rocks. We have developed an instrument for measuring the thermal conductivity of water-saturated rocks at temperatures from 20 to 350 °C and confining pressures up to 100 MPa. A transient line-source of heat is applied through a needle probe centered within the rock sample, which in turn is enclosed within a heated pressure vessel with independent controls on pore and confining pressure. Application of this technique to samples of Franciscan graywacke from The Geysers reveals a significant change in thermal conductivity with temperature. At reservoir-equivalent temperatures of 250 °C, the conductivity of the graywacke decreases by approximately 25% relative to the room temperature value. Where heat flow is constant with depth within the caprock overlying the reservoir, this reduction in conductivity with temperature leads to a corresponding increase in the geothermal gradient. Consequently, reservoir temperature are encountered at depths significantly shallower than those predicted by assuming a constant temperature gradient with depth. We have derived general equations for estimating the thermal conductivity of most metamorphic and igneous rocks and some sedimentary rocks at elevated temperature from knowledge of the room temperature thermal conductivity. Application of these equations to geothermal exploration should improve estimates of subsurface temperatures derived from heat flow measurements.

  19. Strontium-85 and plutonium-239 sorption in rock samples from the Semipalatinsk Test Site, Kazakhstan

    SciTech Connect (OSTI)

    Mason, C.F.V.; Lu, N.; Marusak, N.L.; Scheber, B.; Chipera, S. [Los Alamos National Lab., NM (United States); Daukeyev, D.; Khromushin, I. [National Nuclear Center of the Republic of Kazakhstan, Almaty (Kazakhstan)

    1999-03-01T23:59:59.000Z

    The adsorption and desorption of strontium and plutonium were studied as a function of rock type and simulated ground waters from the Semipalatinsk Test Site (STS). Seven different rock types were obtained from the Balapan Region of the STS and were subjected to x-ray diffraction analyses. Two different ground waters were simulated using data supplied by the National Nuclear Center. The results indicate the sorption of strontium is strongly dependent on the minerals present in the rock species and on the total ionic strength of the ground water whereas, in all cases, plutonium was strongly irreversibly sorbed.

  20. Experimental Control of Transport and Current Reversals in a Deterministic Optical Rocking Ratchet

    E-Print Network [OSTI]

    Alejandro V. Arzola; Karen Volke-Sepúlveda; José L. Mateos

    2011-04-27T23:59:59.000Z

    We present an experimental demonstration of a deterministic optical rocking ratchet. A periodic and asymmetric light pattern is created to interact with dielectric microparticles in water, giving rise to a ratchet potential. The sample is moved with respect to the pattern with an unbiased time-periodic rocking function, which tilts the potential in alternating opposite directions. We obtain a current of particles whose direction can be controlled in real time and show that particles of different sizes may experience opposite currents. Moreover, we observed current reversals as a function of the magnitude and period of the rocking force.

  1. Hydrological and water quality characteristics of three rock glaciers: Blanca Massif, Colorado, USA

    E-Print Network [OSTI]

    DeMorett, Joseph Lawrence

    1989-01-01T23:59:59.000Z

    interstitially or as discrete lenses. The geometry of a rock glacier is conducive not only to the formation and growth of ice, but also to the entrapment of water in the fluid state. It is the ice and the trapped water that are important in providing a source... and the trapped water that are important in providing a source for maintaining flow of many alpine streams during the summer. In many alpine areas of the world, streams flow from the frontal slopes of rock glaciers. Although rock glaciers have been studied...

  2. Assessment of industrial minerals and rocks in the controlled area

    SciTech Connect (OSTI)

    Castor, S.B. [Nevada Bureau of Mines and Geology, Reno, NV (United States); Lock, D.E. [Mackay School of Mines, Reno, NV (United States)

    1996-08-01T23:59:59.000Z

    Yucca Mountain in Nye County, Nevada, is a potential site for a permanent repository for high-level nuclear waste in Miocene ash flow tuff. The Yucca Mountain controlled area occupies approximately 98 km{sup 2} that includes the potential repository site. The Yucca Mountain controlled area is located within the southwestern Nevada volcanic field, a large area of Miocene volcanism that includes at least four major calderas or cauldrons. It is sited on a remnant of a Neogene volcanic plateau that was centered around the Timber Mountain caldera complex. The Yucca Mountain region contains many occurrences of valuable or potentially valuable industrial minerals, including deposits with past or current production of construction aggregate, borate minerals, clay, building stone, fluorspar, silicate, and zeolites. The existence of these deposits in the region and the occurrence of certain mineral materials at Yucca Mountain, indicate that the controlled area may have potential for industrial mineral and rock deposits. Consideration of the industrial mineral potential within the Yucca Mountain controlled area is mainly based on petrographic and lithologic studies of samples from drill holes in Yucca Mountain. Clay minerals, zeolites, fluorite, and barite, as minerals that are produced economically in Nevada, have been identified in samples from drill holes in Yucca Mountain.

  3. Prospects for hot dry rock in the future

    SciTech Connect (OSTI)

    Berger, M.E.; Murphy, H.D.

    1988-01-01T23:59:59.000Z

    The Hot Dry Rock (HDR) geothermal energy program is a renewable energy program that can contribute significantly to the nation's balanced and diversified energy mix. The program was reviewed five times in the past three years. Three of these reviews were done by the US Department of Energy (DOE) and a fourth was conducted by the National Research Council at the request of DOE. In addition, HDR was evaluated in the Energy Research Advisory Board's Solid Earth Sciences Report. Recent economic studies for HDR have been performed by Bechtel National, Inc., the Electric Power Research Institute, and the United Kingdom. These studies are reviewed in light of recent progress at Fenton Hill in reducing drilling costs, and mapping and in identifying drilling targets. All of the attention focused on HDR has resulted in evaluating the way in which HDR fits within the nation's energy mix and in estimating when HDR will contribute to energy security. To establish a framework for evaluating the future of HDR, the status and progress of HDR are reviewed and the remaining Fenton Hill program is outlined. Recommendations are also made for follow-on activities that will lead to achieving full development of HDR technologies in the appropriate time frame.

  4. Fluid-Rock Characterization and Interactions in NMR Well Logging

    SciTech Connect (OSTI)

    Hirasaki, George J.; Mohanty, Kishore K.

    2001-07-13T23:59:59.000Z

    This semi-annual report briefly summarizes the progress since the 1st Annual Report issued September, 2000 and the next annual report. More detailed results will be in the annual reports. The main emphasis on fluid properties was on measurements of the relaxation time and self-diffusion coefficient of ethane and propane. Ethane is similar to methane while propane is more similar to the higher alkanes. The ratio of T1 and T2 is demonstrated to be a function of both viscosity and the NMR frequency. The diffusion-induced T2 in a uniform magnetic gradient was simulated in one dimension to seek improved understanding NMR diffusion in restricted geometry. Analytical solutions can be found for this system if the correct region of validity is used. Estimation of permeability of vuggy carbonates has been problematic because the pore body size does not correlate well with pore throat size. CT scans and CPMG NMR measurements were made on a set of vuggy carbonate rocks.

  5. Ghabezloo S., Sulem J. (2009) Stress dependent thermal pressurization of a fluid-saturated rock, Rock Mech Rock Eng 42, 1-24 Stress dependent thermal pressurization of a

    E-Print Network [OSTI]

    Boyer, Edmond

    2009-01-01T23:59:59.000Z

    of the effective mean stress and can lead to shear failure or hydraulic fracturing. The equations governing or hydraulic fracturing. This phenomenon is important in petroleum engineering where the reservoir rock et al. 2007). Important theoretical advances have been proposed in the study of thermal weakening

  6. Environmental assessment of remedial action at the Slick Rock uranium mill tailings sites, Slick Rock, Colorado. Revision 1

    SciTech Connect (OSTI)

    Not Available

    1994-09-01T23:59:59.000Z

    The Uranium Mill Tailings Radiation Control Act of 1978 (42 USC {section}7901 et seq.), hereafter referred to as the UMTRCA, authorized the US Department of Energy (DOE) to clean up two uranium mill tailings processing sites near Slick Rock, Colorado, in San Miquel County. Contaminated materials cover an estimated 63 acres of the Union Carbide (UC) processing site and 15 ac of the North Continent (NC) processing site. The sites are within 1 mile of each other and are adjacent to the Dolores River. The sites contain concrete foundations of mill buildings, tailings piles, and areas contaminated by windblown and waterborne radioactive tailings materials. The total estimated volume of contaminated materials is approximately 621,300 cubic yards (yd{sup 3}). In addition to the contamination in the two processing site areas, four VPs were found to contain contamination. As a result of the tailings being exposed to the environment, contamination associated with the UC and NC sites has leached into shallow ground water. Surface water has not been affected. The closest residence is approximately 0.3 air mi from either site. The proposed action is to remediate the UC and NC sites by removing all contaminated materials within the designing site boundaries or otherwise associated with the sites, and relocating them to, and stabilizing them at, a location approximately 5 road mi northeast of the sites on land administered by the Bureau of Land Management (BLM).

  7. Richard A. Schultz Geomechanics-Rock Fracture Group, Department of Geological

    E-Print Network [OSTI]

    AUTHORS Richard A. Schultz Geomechanics-Rock Fracture Group, Department of Geological Sciences University (1982), and his Ph.D. in geomechanics from Purdue University (1987). He has worked at the Lunar

  8. REGIONAL THERMOHYDROLOGICAL EFFECTS OF AN UNDERGROUND REPOSITORY FOR NUCLEAR WASTES IN HARD ROCK

    E-Print Network [OSTI]

    Wang, J.S.Y.

    2014-01-01T23:59:59.000Z

    underground repository for nuclear waste in hard rock, LBL-and Vath, J.E. , Nuclear waste projections and source-termthe Scientific Basis for Nuclear Waste Management, Material

  9. Synchrotron X-ray Studies of Super-critical Carbon Dioxide / Reservoir Rock Interfaces

    Broader source: Energy.gov [DOE]

    Project obectives: Utilize synchrotron X-ray measurements, to monitor all aspects of atomic to nanoscale structural changes resulting from chemical interactions of scCO2-H2O binary fluids with rocks under environments directly relevant to EGS.

  10. Helium and lead isotope geochemistry of oceanic volcanic rocks from the East Pacific and South Atlantic

    E-Print Network [OSTI]

    Graham, David W. (David William)

    1987-01-01T23:59:59.000Z

    The isotopic evolution of helium and lead in the Earth is coupled by virtue of their common radioactive parents uranium and thorium. The isotopic signatures in oceanic volcanic rocks provide constraints on the temporal ...

  11. Rock creek multiple coal streams project. Final report, July 1984-November 1994

    SciTech Connect (OSTI)

    Saulsberry, J.L.; Lambert, S.W.; Wallace, J.A.; Spafford, S.D.; Steidl, P.F.

    1995-12-01T23:59:59.000Z

    The report summarizes the research conducted at the Rock Creek Project from 1984 to 1994. The Rock Creek Project was a field laboratory with the purpose of determining the best methods to produce methane from multiple coal seams. The site is located in the Oak Grove field of the Black Warrior Basin approximately 15 miles west of Birmingham, Alabama. The research performed under the Rock Creek Project involved: resource evaluation, reservoir testing, completion techniques, stimulation design and evaluation, operational methods, production forecasting, and remedial stimulations. Offsite cooperative research with other operators was also performed as part of the project. In addition to developing new technology, the work at Rock Creek demonstrated how existing technology from mining, groundwater hydrology, and the petroleum industry could be applied to coalbed methane production. The work also highlighted the pitfalls associated with some of the technology that was being used by certain operators.

  12. A STATISTICAL FRACTURE MECHANICS APPROACH TO THE STRENGTH OF BRITTLE ROCK

    E-Print Network [OSTI]

    Ratigan, J.L.

    2010-01-01T23:59:59.000Z

    strength-size relation of granite", International Journal ofsample size for Bohus granite", Rock Mechanics, 10, pp201·Point Bending-Sierra White Granite 6.3 Four Point Bending-

  13. Probabilistic Seismic Demand Model and Fragility Estimates for Symmetric Rigid Blocks Subject to Rocking Motions

    E-Print Network [OSTI]

    Bakhtiary, Esmaeel

    2013-01-15T23:59:59.000Z

    This thesis presents a probability model to predict the maximum rotation of rocking bodies exposed to seismic excitations given specific earthquake intensity measures. After obtaining the nonlinear equations of motion and clarification...

  14. Coincident P and Sh reflections from basement rocks at Coso geothermal...

    Open Energy Info (EERE)

    Coincident P and Sh reflections from basement rocks at Coso geothermal field Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal Article: Coincident P and Sh...

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

    E-Print Network [OSTI]

    Mammadova, Elnara

    2012-10-19T23:59:59.000Z

    ) 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...

  16. Rock art boundaries: considering geographically limited elements within the Pecos River Style

    E-Print Network [OSTI]

    Harrison, James Burr

    2004-09-30T23:59:59.000Z

    This thesis examines six prominent Pecos River Style rock art anthropomorph attributes to determine if they are found in limited geographic districts of the Lower Pecos Region. Both Boyd (2003) and Turpin (2004) have suggested that spatially...

  17. Who are Climbing the Walls? An Exploration of the Social World of Indoor Rock Climbing

    E-Print Network [OSTI]

    Kurten, Jason Henry

    2011-02-22T23:59:59.000Z

    , and share values, goals and language. For years, non-academics involved in the indoor climbing industry have recognized the social component of indoor rock climbing. A recent issue of Recreation Management magazine quoted Adam Koberna, the vice...

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

    E-Print Network [OSTI]

    Mammadova, Elnara

    2012-10-19T23:59:59.000Z

    ) 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...

  19. The nature of fire-cracked rock: new insights from ethnoarchaeological and laboratory experiments

    E-Print Network [OSTI]

    Jackson, Michael A

    1998-01-01T23:59:59.000Z

    thermal weathering better than metamorphic or sedimentary rock types. Ethnoarchaeological results are applied to six archaeological FCR features, and provide new insights on the use-history of five of the features. Microscopic observations...

  20. Rock Physics Characterization of Organic-Rich Shale Formations to Predict Organic Properties

    E-Print Network [OSTI]

    Bush, Brandon

    2013-07-29T23:59:59.000Z

    rely on to assess the economic potential of these formations are: total organic carbon (TOC), thermal maturity, hydrocarbon saturation, porosity, mineralogy and brittleness. In this thesis, I investigate rock physics models and methods for the possible...

  1. Multidisciplinary Imaging of Rock Properties in Carbonate Reservoirs for Flow-Unit Targeting

    SciTech Connect (OSTI)

    Ruppel, Stephen C.

    2002-10-08T23:59:59.000Z

    During the period major accomplishments were in (1) characterization of facies and cyclicity in subsurface cores and in outcrop, (2) construction of a preliminary stratigraphic framework, (3) definition of rock fabrics, and (4) correlation of 3-D seismic data.

  2. Effects of burial history, rock ductility and recovery magnitude on inversion of normal faulted strata

    E-Print Network [OSTI]

    Kuhle, Nathan John

    2001-01-01T23:59:59.000Z

    Inversion of normal faults at different burial depths is studied using physical models constructed with rock and deformed at confining pressure. Models consist of a 1 cm thick limestone layer above a fault dipping 70° in a rigid medium...

  3. EXPERIMENTAL APPROACHES TO DATING PETROGLYPHS AND GEOGLYPHS WITH ROCK VARNISH IN THE CALIFORNIA DESERTS

    E-Print Network [OSTI]

    Dorn, Ron

    between the rock in the lower right and the layered varnish. RIGHT: transmission electron microscope image), much in the same way that cars roll off a transport truck and move into a nearby parking space

  4. Experimental Validation of Pore-Level Calculations of Static and Dynamic Petrophysical Properties of Clastic Rocks

    E-Print Network [OSTI]

    Torres-Verdín, Carlos

    . The calculations are based on high-resolution three-dimensional (3D) digital images of actual clastic rocks of Petroleum Engineers is prohibited. Permission to reproduce in print is restricted to an ab- stract

  5. acid volcano-plutonic rocks: Topics by E-print Network

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

    mining. Operations gave rise to approximately 12.410 6 m 3 of waste rock, while the mill process generated a volume of approximately 2.3910 6 m 3 of tailings. Regardless the...

  6. Application Of Fluid Inclusion And Rock-Gas Analysis In Mineral...

    Open Energy Info (EERE)

    Gas Analysis In Mineral Exploration Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal Article: Application Of Fluid Inclusion And Rock-Gas Analysis In...

  7. From Gondwanaland, with love : the tale of how Boston got its rocks

    E-Print Network [OSTI]

    Cull, Selby (Selby C.)

    2006-01-01T23:59:59.000Z

    The rocks on which the city of Boston was built did not form as part of North America. They formed about 600 million years ago, at the South Pole, as the northern coast of a supercontinent called Gondwanaland. Boston's ...

  8. Subsurface Geology of the Fenton Hill Hot Dry Rock Geothermal Energy Site

    SciTech Connect (OSTI)

    Levey, Schon S.

    2010-12-01T23:59:59.000Z

    The Precambrian rock penetrated by wells EE-2A and -3A belongs to one or more granitic to granodioritic plutons. The plutonic rock contains two major xenolith zones of amphibolite, locally surrounded by fine-grained mafic rock of hybrid igneous origin. The granodiorite is cut by numerous leucogranite dikes that diminish in abundance with depth. The most prominent structural feature is the main breccia zone, in which the rock is highly fractured and moderately altered. This zone is at least 75 m thick and is of uncertain but near-horizontal orientation. Fracture abundance decreases with increasing depth below the main breccia zone, and fractures tend to be associated with leucogranite dikes. This association suggests that at least some of the fractures making up the geothermal reservoir are of Precambrian age or have long-range orientations controlled by the presence of Precambrian-age granitic dikes.

  9. Rock-water interactions of the Madison Aquifer, Mission Canyon Formation, Williston Basin, North Dakota 

    E-Print Network [OSTI]

    Spicer, James Frank

    1994-01-01T23:59:59.000Z

    and provide an excellent framework in which to study rockwater interactions in highly saline aquifers. Geochemical speciation was coupled with data visualization interpretations in order to understand specific rock-water interactions that occur...

  10. Properties of CO2-Rich Pore Fluids and Their Effect on Porosity Evolution in EGS Rocks

    Broader source: Energy.gov [DOE]

    Project objective: Quantify key parameters critically needed for developing and validating numerical modeling of chemical interactions between EGS reservoir rocks and supercritical CO2and CO2-rich aqueous fluids.

  11. ForPeerReview Interpretation of hydraulic rock types with resistivity logs in

    E-Print Network [OSTI]

    Torres-Verdín, Carlos

    Subject Areas: Borehole and log interpretation, Integrated workflows and best practices (with broad hydraulic rock types. Core data and well logs acquired from a deep-drilling exploration well penetrating

  12. Numerical and analytical modeling of heat transfer between fluid and fractured rocks

    E-Print Network [OSTI]

    Li, Wei, S.M. Massachusetts Institute of Technology

    2014-01-01T23:59:59.000Z

    Modeling of heat transfer between fluid and fractured rocks is of particular importance for energy extraction analysis in EGS, and therefore represents a critical component of EGS design and performance evaluation. In ...

  13. Uranium occurrence in igneous rocks of the central Davis Mountains, west Texas

    E-Print Network [OSTI]

    Schaftenaar, Wendy Elizabeth

    1982-01-01T23:59:59.000Z

    of MASTER OF SCIENCE December 1982 Major Subject: Geology URANIUM OCCURRENCE IN IGNEOUS ROCKS OF THE CENTRAl DAVIS MOUNTAINS, WEST TEXAS A Thesis WENDY EI. IZABETH SCHAFTENAAR Approved as to style and content by: Chairman of Committee) (Member...) (Member) (Member) (He d f epar ent) December 1962 ABSTRACT Uranium Occurrence in Igneous Rocks of the Central Davis Mountains, West Texas. (December 1982) Wendy Elizabeth Schaftenaar, B. A. , Hope College Chairman of Advisory Cosooittee: Dr. Thomas...

  14. Proceedings of the International Symposium on Dynamics of Fluids in Fractured Rocks: Concepts and Recent Advances

    SciTech Connect (OSTI)

    Faybishenko, B. (ed.)

    1999-02-01T23:59:59.000Z

    This publication contains extended abstracts of papers presented at the International Symposium ''Dynamics of Fluids in Fractured Rocks: Concepts and Recent Advances'' held at Ernest Orlando Lawrence Berkeley National Laboratory on February 10-12, 1999. This Symposium is organized in Honor of the 80th Birthday of Paul A. Witherspoon, who initiated some of the early investigations on flow and transport in fractured rocks at the University of California, Berkeley, and at Lawrence Berkeley National Laboratory. He is a key figure in the development of basic concepts, modeling, and field measurements of fluid flow and contaminant transport in fractured rock systems. The technical problems of assessing fluid flow, radionuclide transport, site characterization, modeling, and performance assessment in fractured rocks remain the most challenging aspects of subsurface flow and transport investigations. An understanding of these important aspects of hydrogeology is needed to assess disposal of nu clear wastes, development of geothermal resources, production of oil and gas resources, and remediation of contaminated sites. These Proceedings of more than 100 papers from 12 countries discuss recent scientific and practical developments and the status of our understanding of fluid flow and radionuclide transport in fractured rocks. The main topics of the papers are: Theoretical studies of fluid flow in fractured rocks; Multi-phase flow and reactive chemical transport in fractured rocks; Fracture/matrix interactions; Hydrogeological and transport testing; Fracture flow models; Vadose zone studies; Isotopic studies of flow in fractured systems; Fractures in geothermal systems; Remediation and colloid transport in fractured systems; and Nuclear waste disposal in fractured rocks.

  15. The development and utilization of a high-speed laboratory rock drilling apparatus

    E-Print Network [OSTI]

    Day, Jeffrey Dale

    1988-01-01T23:59:59.000Z

    THE DEVELOPMENT AND UTILIZATION OF A HIGH-SPEED LABORATORY ROCK DRILLING APPARATUS A Thesis by JEFFREY DALE DAY Submitted to the Graduate College of Texas AGM University in partial fulfillment of the requirements for the degree of MASTER... OF SCIENCE May 1988 Major Subject: Petroleum Engineering THE DEVELOPMENT AND UTILIZATION OF A HIGH-SPEED LABORATORY ROCK DRILLING APPARATUS A Thesis by JEFFREY DALE DAY Approved as to style and content by: Hans C. Juvkam-Wold (Chair of Committee...

  16. Depositional and diagenetic history of some Jurassic carbonates, Indian Rock-Gilmer Field, Upshur County, Texas

    E-Print Network [OSTI]

    Fall, Steven Anthony

    1974-01-01T23:59:59.000Z

    that the origin of the paleostructure which pro- duced the shallow marine environments during Cotton Valley/Haynesvi lie deposition was a Paleozoic high. The Indian Rock-Gilmer Field was a shallow area in the Jurassic Cotton Valley/Haynesville sea situated...~ ~ ~ 0 '''j DEPOSITIONAL AND DIAGENETIC HISTORY OF SOME JURASSIC CARBONATES, INDIAN ROCK-GILMER FIELD, UPSHUR COUNTY, TEXAS A Thesis by STEVEN ANTHONY FALL Submitted to the Graduate College of Texas ASM University in partial fulfillment...

  17. Relationship between meteorological variables and total suspended and heavy metal particulates in Little Rock, Arkansas

    E-Print Network [OSTI]

    Avery, Mary Gwendolyn

    1985-01-01T23:59:59.000Z

    RELATIONSHIP BETWEEN METEOROLOGICAL VARIABLES AND TOTAL SUSPENDED AND HEAVY NFXAL PARTICULATES IN LITTLE ROCK, ARKANSAS A Thesis MARY GWENDOLl'N AVERY Submitted to the Graduate College of Texas ALM University in partial fulfillment... of the requirements for the degree of MASTER OF SCIENCE May 1985 Major Subject: Meteorology RELATIONSHIP BETWEEN METEOROLOGICAL VARIABLES AND TOTAL SUSPENDED AND HEAVY METAL PARTICULATES IN LITTLE ROCK, ARKANSAS A Thesis MARY GWENDOLYN AVERY Approved...

  18. Hydrogeologic and topographic factors influencing well yields in fractured crystalline rocks - Seoul, Republic of Korea

    E-Print Network [OSTI]

    Kim, Sang-Il

    1990-01-01T23:59:59.000Z

    , it is necessary to evaluate the factors affecting specific capacity. Siddiqui and Parizek (1971) state that the specific capacity of' a well may be affected by the well radiils, srdilrated thickness of rock penetrated by the well and several other factors.... (Siegel, 1956). In the present study, it was applied to evaluate the significance of differences in the effects of topographic setting, rock type, and distance from the Han River on the productivity of wells (Table 2). The statistic, V, used...

  19. Estimating rock properties in two phase petroleum reservoirs: an error analysis

    E-Print Network [OSTI]

    Paul, Anthony Ian

    1983-01-01T23:59:59.000Z

    ESTIMATING ROCK PROPERTIES IN TWO PHASE PETROLEUM RESERVOIRS: AN ERROR ANALYSIS A Thesis by ANTHONY IAN PAUL Submitted to the Graduate College of Texas AE:M University in partial fulfillment of the requirements for the degree of MASTER... OF SCIENCE December 1983 Maior Subjecu Chemical Engineering ESTIMATING ROCK PROPERTIES IN TWO PHASE PETROLEUM RESERVOIRS: AN ERROR ANALYSIS A Thesis by ANTHONY IAN PAUL Approved as to style and content by: A. T. Watson (Chairman of Commiuee) C. J...

  20. On grouting using a suspension of ultrafine clay on artificially cracked rock samples

    SciTech Connect (OSTI)

    Ito, Y.; Sakaguchi, T.; Nishiyama, K. [Kumagai Gumi Co., Ltd., Tokyo (Japan). Nuclear and Energy Dept.; Fujiwara, A. [Radioactive Waste Management Center, Tokyo (Japan). Second Research Div.

    1993-12-31T23:59:59.000Z

    Recently there has been increasing social interest in the effective disposal of low-level radioactive wastes. The use of underground rock caverns is considered as a possible repository space. This paper presents a new grouting method which uses a suspension of liquefied ultrafine clay in fractured rock masses. In order to demonstrate the effect to block open cracks, two experiments were carried out on large-sized granite samples with open cracks. The experiments proved the method to be highly effective.

  1. Laboratory measurements on reservoir rocks from The Geysers geothermal field

    SciTech Connect (OSTI)

    Boitnott, G.N.

    1995-01-26T23:59:59.000Z

    A suite of laboratory measurements have been conducted on Geysers metagraywacke and metashale recovered from a drilled depth of 2599 to 2602 meters in NEGU-17. The tests have been designed to constrain the mechanical and water-storage properties of the matrix material. Various measurements have been made at a variety of pressures and at varying degrees of saturation. Both compressional and shear velocities exhibit relatively little change with effective confining pressure. In all of the samples, water saturation causes an increase in the compressional velocity. In some samples, saturation results in a moderate decrease in shear velocity greater in magnitude than would be expected based on the slight increase in bulk density. It is found that the effect of saturation on the velocities can be quantitatively modeled through a modification of Biot-Gassmann theory to include weakening of the shear modulus with saturation. The decrease is attributed to chemo-mechanical weakening caused by the presence of water. The degree of frame weakening of the shear modulus is variable between samples, and appears correlated with petrographic features of the cores. Two related models are presented through which we can study the importance of saturation effects on field-scale velocity variations. The model results indicate that the saturation effects within the matrix are significant and may contribute to previously observed field anomalies. The results help to define ways in which we may be able to separate the effects of variations in rock properties, caused by phenomena such as degree of fracturing, from similar effects caused by variations in matrix saturation. The need for both compressional and shear velocity data in order to interpret field anomalies is illustrated through comparisons of model results with the field observations.

  2. Groundwater chemistry and water-rock interactions at Stripa

    SciTech Connect (OSTI)

    Nordstrom, D.K.; Ball, J.W. (Geological Survey, Menlo Park, CA (USA)); Donahoe, R.J. (Univ. of Alabama, Tuscaloosa (USA)); Whittemore, D. (Univ. of Kansas, Lawrence (USA))

    1989-08-01T23:59:59.000Z

    Ground waters from near surface to a depth of 1,232 m in the Stripa granite have been sampled and analyzed for major and trace constituents. The groundwater composition consists of two general types: a typical recharge water of Ca-HCO{sub 3} type (<300 m depth) and a deeper Na-Ca-Cl type (>700 m depth) of high pH (8-10) that reaches a maximum of 1,250 mg/L in total dissolved solids (TDS). Intermediate depths show mixtures of the two types that are highly fracture-dependent rather than depth-dependent. Any borehole can vary significantly and erratically in TDS for either a horizontal or vertical direction. The general transition from Ca-HCO{sub 3} type to Na-Ca-Cl type correlates with the depth profile for hydraulic conductivity that drops from 10{sup {minus}8} m/s to 10{sup {minus}11} m/s or lower. Thermomechanical stress (from heater experiments) clearly shows an effect on the groundwater composition that could be caused by changing flow paths, leakage of fluid inclusions or both. Dissolution and precipitation of calcite, fluorite and barite, aluminosilicate hydrolysis, and addition of a saline source (possibly fluid inclusion leakage) play the major roles in defining the groundwater composition. The low permeability of the Stripa granite has produced a groundwater composition that appears intermediate between the dilute, shallow ground waters typical of recharge in a crystalline rock terrain and the saline waters and brines typical of cratonic shield areas at depth.

  3. Rock Mechanics in Civil and Environmental Engineering Zhao, Labiouse, Dudt & Mathier (eds) 2010 Taylor & Francis Group, London, ISBN 978-0-415-58654-2

    E-Print Network [OSTI]

    Merguerian, Charles

    properties such as strength and brittleness are crucial parameters for performance analysis of hard rock TBMs of the experiences and datasets obtained from these projects indicates that even though intact rock properties researches have been conducted to investi- gate the affect of intact rock properties, geological and rock

  4. areva nc cadarache: Topics by E-print Network

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

    Index 261 Link between the Potentially Hazardous Asteroid (86039) 1999 NC43 and the Chelyabinsk meteoroid tenuous CERN Preprints Summary: We explored the statistical and...

  5. areva nc bu: Topics by E-print Network

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

    DC 392 Link between the Potentially Hazardous Asteroid (86039) 1999 NC43 and the Chelyabinsk meteoroid tenuous CERN Preprints Summary: We explored the statistical and...

  6. areva nc recycling: Topics by E-print Network

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

    the IEA R&D Wind's Topical expert meeting on Material recycling and life cycle analysis (LCA) of wind turbines 329 The Randomness Recycler Approach to Perfect James Allen Fill...

  7. areva fuel solutions: Topics by E-print Network

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

    gamma ray upon decay. We find that pressurized light-water-reactors fueled with LEU-thorium fuel at high burnup (70 MWdkg) produce U-233 with U-232 contamination levels of...

  8. areva advanced mox: Topics by E-print Network

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

    . . . . 18 3.4.1 Heat Exchanger - Code description . . . . . . . . . . . . . . . 18 3.4.2 Simulation ResultsADVANCED POWER PLANT MODELING WITH APPLICATIONS TO THE ADVANCED BOILING...

  9. areva global database: Topics by E-print Network

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

    sensitive data. The security of the data depends on physical security, OS security and DBMS security. Database security can be compromised by obtaining sensitive data, changing...

  10. Microsoft Word - AREVA Benchmarking Site Visit and Interview...

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

    reserves were depleted, their hydro capabilities had been fully developed and they had no oil or gas reserves. The country decided to embrace nuclear power at that time, and all of...

  11. areva sustainable development: Topics by E-print Network

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

    rays is used. Photovoltaics currently relies on three technologies. Monocrystalline and polycrystalline cells are silicon-based. Thin-film cells use semi-conductor materials....

  12. areva technical days: Topics by E-print Network

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

    Around the World Watson, Craig A. 23 Technical Brief CiteSeer Summary: ii iiiFOREWARD The Depleted Uranium Technical Brief is designed to convey available information and knowledge...

  13. areva group facilities: Topics by E-print Network

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

    2 Omega Laser Facility Users Group Workshop (April 25 -27, 2012) Plasma Physics and Fusion Websites Summary: the largest users group in the world in the field of high-energy...

  14. Overview of AREVA Logistics Business Unit Capabilities and Expertise

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33Frequently Asked QuestionsDepartmentGas and OilGeothermal and SolarOvertimeBatteries

  15. PRIVACY IMPACT ASSESSMENT: Shaw Areva MOX Services, LLC MOX

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onYouTube YouTube Note: Since the.pdfBreaking ofOilNEWResponse(Expired) | DepartmentINL E-IDROCCUPATIONALOffice ofSPRO -.

  16. Washington Post Energy Conference Presented by Areva | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742Energy China 2015ofDepartment of Energy MicrosoftVOLUMEWORKFORCE DIVERSITY

  17. Washington Post Energy Conference Presented by Areva | Department of Energy

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33Frequently20,000 Russian Nuclear Warheads| DepartmentVictorDepartmentMarksWalk-InWasWashington

  18. Overview of AREVA Logistics Business Unit Capabilities and Expertise |

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 1112011 Strategic2 OPAM615_CostNSAR - T en Y earEnergy T HK-12OtherOverseas CorpsOverview

  19. Areva University of Idaho JV | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual Siteof EnergyInnovation in Carbon Capture andsoftware and hardware orIndexes LLC

  20. Porosity and surface area evolution during weathering of two igneous rocks

    SciTech Connect (OSTI)

    Navarre-Sitchler, Alexis [Colorado School of Mines, Golden; Cole, David [Ohio State University; Rother, Gernot [ORNL; Jin, Lixin [University of Texas, El Paso; Buss, Heather [University of Bristol, UK; Brantley, S. L. [Pennsylvania State University, University Park, PA

    2013-01-01T23:59:59.000Z

    During weathering, rocks release nutrients and storewater vital for growth ofmicrobial and plant life. Thus, the growth of porosity as weathering advances into bedrock is a life-sustaining process for terrestrial ecosystems. Here, we use small-angle and ultra small-angle neutron scattering to show how porosity develops during initial weathering under tropical conditions of two igneous rock compositions, basaltic andesite and quartz diorite. The quartz diorite weathers spheroidally while the basaltic andesite does not. The weathering advance rates of the two systems also differ, perhaps due to this difference in mechanism, from 0.24 to 100 mm kyr1, respectively. The scattering data document how surfaces inside the feldspar-dominated rocks change as weathering advances into the protolith. In the unaltered rocks, neutrons scatter fromtwo types of featureswhose dimensions vary from6 nmto 40 lm: pores and bumps on pore grain surfaces. These features result in scattering data for both unaltered rocks that document multi-fractal behavior: scattering is best described by amass fractal dimension (Dm) and a surface fractal dimension (Ds) for features of length scales greater than and less than 1 lm, respectively. In the basaltic andesite, Dm is approximately 2.9 and Ds is approximately 2.7. The mechanism of solute transport during weathering of this rock is diffusion. Porosity and surface area increase from 1.5%to 8.5%and 3 to 23 m2 g1 respectively in a relatively consistent trend across themm-thick plagioclase reaction front. Across this front, both fractal dimensions decrease, consistentwith development of amoremonodisperse pore networkwith smoother pore surfaces. Both changes are consistent largely with increasing connectivity of pores without significant surface roughening, as expected for transport-limited weathering. In contrast, porosity and surface area increase from 1.3% to 9.5% and 1.5 to 13 m2 g1 respectively across a many cm-thick reaction front in the spheroidally weathering quartz diorite. In that rock, Dm is approximately 2.8 andDs is approximately 2.5 prior to weathering. These two fractals transform during weathering to multiple surface fractals as micro-cracking reduces the size of diffusion-limited subzones of thematrix.Across the reaction front of plagioclase in the quartz diorite, the specific surface area and porosity change very little until the pointwhere the rock disaggregates into saprolite. The different patterns in porosity development of the two rocks are attributed to advective infiltration plus diffusion in the rock that spheroidally fractures versus diffusion-only in the rock that does not. Fracturing apparently diminishes the size of the diffusion-limited parts of the spheroidally weathering rock system to promote infiltration of meteoric fluids, thereforeexplaining the faster weathering advance rate into that rock.