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Sample records for notes geothermal fluids

  1. GEOTHERMAL FLUID PROPENE AND PROPANE: INDICATORS OF FLUID | Open...

    Open Energy Info (EERE)

    FLUID PROPENE AND PROPANE: INDICATORS OF FLUID Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference Proceedings: GEOTHERMAL FLUID PROPENE AND PROPANE:...

  2. Tailored Working Fluids for Enhanced Binary Geothermal Power...

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

    Tailored Working Fluids for Enhanced Binary Geothermal Power Plants Tailored Working Fluids for Enhanced Binary Geothermal Power Plants DOE Geothermal Program Peer Review 2010 - ...

  3. Thermodynamics of geothermal fluids

    SciTech Connect (OSTI)

    Rogers, P.S.Z.

    1981-03-01

    A model to predict the thermodynamic properties of geothermal brines, based on a minimum amount of experimental data on a few key systems, is tested. Volumetric properties of aqueous sodium chloride, taken from the literature, are represented by a parametric equation over the range 0 to 300{sup 0}C and 1 bar to 1 kbar. Density measurements at 20 bar needed to complete the volumetric description also are presented. The pressure dependence of activity and thermal properties, derived from the volumetric equation, can be used to complete an equation of state for sodium chloride solutions. A flow calorimeter, used to obtain heat capacity data at high temperatures and pressures, is described. Heat capacity measurements, from 30 to 200{sup 0}C and 1 bar to 200 bar, are used to derive values for the activity coefficient and other thermodynamic properties of sodium sulfate solutions as a function of temperature. Literature data on the solubility of gypsum in mixed electrolyte solutions have been used to evaluate model parameters for calculating gypsum solubility in seawater and natural brines. Predictions of strontium and barium sulfate solubility in seawater also are given.

  4. Working Fluids and Their Effect on Geothermal Turbines

    Broader source: Energy.gov [DOE]

    DOE Geothermal Program Peer Review 2010 - Presentation. Project objective: Identify new working fluids for binary geothermal plants.

  5. Monitoring and Modeling Fluid Flow in a Developing Enhanced Geothermal...

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

    Enhanced Geothermal System (EGS) Reservoir; 2010 Geothermal Technology Program Peer Review Report Monitoring and Modeling Fluid Flow in a Developing Enhanced Geothermal System ...

  6. Fluid Inclusion Analysis At Geysers Geothermal Area (1990) |...

    Open Energy Info (EERE)

    Geothermal Area (1990) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Fluid Inclusion Analysis At Geysers Geothermal Area (1990) Exploration...

  7. Fluid Inclusion Analysis At Chena Geothermal Area (Kolker, 2008...

    Open Energy Info (EERE)

    Chena Geothermal Area (Kolker, 2008) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Fluid Inclusion Analysis At Chena Geothermal Area (Kolker,...

  8. Fluid Inclusion Analysis At Salton Sea Geothermal Area (1990...

    Open Energy Info (EERE)

    Salton Sea Geothermal Area (1990) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Fluid Inclusion Analysis At Salton Sea Geothermal Area (1990)...

  9. Fluid Inclusion Analysis At Valles Caldera Geothermal Region...

    Open Energy Info (EERE)

    Geothermal Region (1990) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Fluid Inclusion Analysis At Valles Caldera Geothermal Region (1990)...

  10. Isotopic Analysis- Fluid At Rose Valley Geothermal Area (1990...

    Open Energy Info (EERE)

    Rose Valley Geothermal Area (1990) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Isotopic Analysis- Fluid At Rose Valley Geothermal Area (1990)...

  11. Fluid Inclusion Analysis At Raft River Geothermal Area (2011...

    Open Energy Info (EERE)

    Raft River Geothermal Area (2011) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Fluid Inclusion Analysis At Raft River Geothermal Area (2011)...

  12. Direct contact, binary fluid geothermal boiler

    DOE Patents [OSTI]

    Rapier, Pascal M.

    1982-01-01

    Energy is extracted from geothermal brines by direct contact with a working fluid such as isobutane which is immiscible with the brine in a geothermal boiler. The geothermal boiler provides a distributor arrangement which efficiently contacts geothermal brine with the isobutane in order to prevent the entrainment of geothermal brine in the isobutane vapor which is directed to a turbine. Accordingly the problem of brine carry-over through the turbine causes corrosion and scaling thereof is eliminated. Additionally the heat exchanger includes straightening vanes for preventing startup and other temporary fluctuations in the transitional zone of the boiler from causing brine carryover into the turbine. Also a screen is provided in the heat exchanger to coalesce the working fluid and to assist in defining the location of the transitional zone where the geothermal brine and the isobutane are initially mixed.

  13. Direct contact, binary fluid geothermal boiler

    DOE Patents [OSTI]

    Rapier, P.M.

    1979-12-27

    Energy is extracted from geothermal brines by direct contact with a working fluid such as isobutane which is immiscible with the brine in a geothermal boiler. The geothermal boiler provides a distributor arrangement which efficiently contacts geothermal brine with the isobutane in order to prevent the entrainment of geothermal brine in the isobutane vapor which is directed to a turbine. Accordingly the problem of brine carryover through the turbine causing corrosion and scaling thereof is eliminated. Additionally the heat exchanger includes straightening vanes for preventing startup and other temporary fluctuations in the transitional zone of the boiler from causing brine carryover into the turbine. Also a screen is provided in the heat exchanger to coalesce the working fluid and to assist in defining the location of the transitional zone where the geothermal brine and the isobutane are initially mixed.

  14. Fluid Inclusion Analysis At International Geothermal Area Mexico...

    Open Energy Info (EERE)

    Notes Our examination of Cerro Prieto gas analyses indicates that the geothermal system structure is changing with time. Gas data routinely measured in most geothermal...

  15. Fluid Inclusion Analysis At Coso Geothermal Area (2002) | Open...

    Open Energy Info (EERE)

    2) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Fluid Inclusion Analysis At Coso Geothermal Area (2002) Exploration Activity Details Location...

  16. Fluid Inclusion Analysis At Coso Geothermal Area (1990) | Open...

    Open Energy Info (EERE)

    0) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Fluid Inclusion Analysis At Coso Geothermal Area (1990) Exploration Activity Details Location...

  17. Fluid Inclusion Analysis At Valles Caldera - Redondo Geothermal...

    Open Energy Info (EERE)

    Redondo Geothermal Area (Sasada, 1988) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Fluid Inclusion Analysis At Valles Caldera - Redondo...

  18. Mineral Recovery from Geothermal Fluids | Open Energy Information

    Open Energy Info (EERE)

    Metals and Compounds from Geothermal Fluids California Simbol Mining Corp. Recovery Act: Enhanced Geothermal Systems Component Research and DevelopmentAnalysis Albuquerque, NM,...

  19. Isotopic Analysis- Fluid At Long Valley Caldera Geothermal Area...

    Open Energy Info (EERE)

    Long Valley Caldera Geothermal Area (Taylor & Gerlach, 1983) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Isotopic Analysis- Fluid At Long...

  20. Isotopic Analysis-Fluid At Raft River Geothermal Area (1982)...

    Open Energy Info (EERE)

    GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Isotopic Analysis-Fluid At Raft River Geothermal Area (1982) Exploration Activity Details Location Raft River...

  1. Isotopic Analysis-Fluid At Raft River Geothermal Area (1977)...

    Open Energy Info (EERE)

    GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Isotopic Analysis-Fluid At Raft River Geothermal Area (1977) Exploration Activity Details Location Raft River...

  2. Geothermal energy production with supercritical fluids

    DOE Patents [OSTI]

    Brown, Donald W.

    2003-12-30

    There has been invented a method for producing geothermal energy using supercritical fluids for creation of the underground reservoir, production of the geothermal energy, and for heat transport. Underground reservoirs are created by pumping a supercritical fluid such as carbon dioxide into a formation to fracture the rock. Once the reservoir is formed, the same supercritical fluid is allowed to heat up and expand, then is pumped out of the reservoir to transfer the heat to a surface power generating plant or other application.

  3. Geothermal fracture stimulation technology. Volume III. Geothermal fracture fluids

    SciTech Connect (OSTI)

    Not Available

    1981-01-01

    A detailed study of all available and experimental frac fluid systems is presented. They have been examined and tested for physical properties that are important in the stimulation of hot water geothermal wells. These fluids consist of water-based systems containing high molecular weight polymers in the uncrosslinked and crosslinked state. The results of fluid testing for many systems are summarized specifically at geothermal conditions or until breakdown occurs. Some of the standard tests are ambient viscosity, static aging, high temperature viscosity, fluid-loss testing, and falling ball viscosity at elevated temperatures and pressures. Results of these tests show that unalterable breakdown of the polymer solutions begins above 300/sup 0/F. This continues at higher temperatures with time even if stabilizers or other high temperature additives are included.

  4. Monitoring and Modeling Fluid Flow in a Developing Enhanced Geothermal

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

    System (EGS) Reservoir; 2010 Geothermal Technology Program Peer Review Report | Department of Energy Enhanced Geothermal System (EGS) Reservoir; 2010 Geothermal Technology Program Peer Review Report Monitoring and Modeling Fluid Flow in a Developing Enhanced Geothermal System (EGS) Reservoir; 2010 Geothermal Technology Program Peer Review Report DOE 2010 Geothermal Technologies Program Peer Review seismic_025_fehler.pdf (195.11 KB) More Documents & Publications Analysis of Geothermal

  5. Tailored Working Fluids for Enhanced Binary Geothermal Power Plants |

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

    Department of Energy Tailored Working Fluids for Enhanced Binary Geothermal Power Plants Tailored Working Fluids for Enhanced Binary Geothermal Power Plants DOE Geothermal Program Peer Review 2010 - Presentation. Project Objective: To improve the utilization of available energy in geothermal resources and increase the energy conversion efficiency of systems employed by a) tailoring the subcritical and/or supercritical glide of enhanced working fluids to best match thermal resources, and b)

  6. Isotopic Analysis- Fluid At Roosevelt Hot Springs Geothermal...

    Open Energy Info (EERE)

    Unknown Exploration Basis Faulder 1991 Conceptual Geological Model compilation and literature review of the Roosevelt Hot Springs Geothermal Area. Notes Stable isotope analysis...

  7. Clay-based geothermal drilling fluids

    SciTech Connect (OSTI)

    Guven, N.; Carney, L.L.; Lee, L.J.; Bernhard, R.P.

    1982-11-01

    The rheological properties of fluids based on fibrous clays such as sepiolite and attapulgite have been systematically examined under conditions similar to those of geothermal wells, i.e. at elevated temperatures and pressures in environments with concentrated brines. Attapulgite- and sepiolite-based fluids have been autoclaved at temperatures in the range from 70 to 800/sup 0/F with the addition of chlorides and hydroxides of Na, K, Ca, and Mg. The rheological properties (apparent and plastic viscosity, fluid loss, gel strength, yield point, and cake thickness) of the autoclaved fluids have been studied and correlated with the chemical and physical changes that occur in the clay minerals during the autoclaving process.

  8. Geothermal Produced Fluids: Characteristics, Treatment Technologies, and Management Options

    SciTech Connect (OSTI)

    Finster, Molly; Clark, Corrie; Schroeder, Jenna; Martino, Louis

    2015-10-01

    Geothermal power plants use geothermal fluids as a resource and create waste residuals as part of the power generation process. Both the geofluid resource and the waste stream are considered produced fluids. The chemical and physical nature of produced fluids can have a major impact on the geothermal power industry and can influence the feasibility of geothermal power development, exploration approaches, power plant design, operating practices, and the reuse or disposal of residuals. In general, produced fluids include anything that comes out of a geothermal field and that subsequently must be managed on the surface. These fluids vary greatly depending on the geothermal reservoir being harnessed, power plant design, and the life cycle stage in which the fluid exists, but generally include water and fluids used to drill geothermal wells, fluids used to stimulate wells in enhanced geothermal systems, and makeup and/or cooling water used during operation of a geothermal power plant. Additional geothermal-related produced fluids include many substances that are similar to waste streams from the oil and gas industry, such as scale, flash tank solids, precipitated solids from brine treatment, hydrogen sulfide, and cooling-tower-related waste. This review paper aims to provide baseline knowledge on specific technologies and technology areas associated with geothermal power production. Specifically, this research focused on the management techniques related to fluids produced and used during the operational stage of a geothermal power plant; the vast majority of which are employed in the generation of electricity. The general characteristics of produced fluids are discussed. Constituents of interest that tend to drive the selection of treatment technologies are described, including total dissolved solids, noncondensable gases, scale and corrosion, silicon dioxide, metal sulfides, calcium carbonate, corrosion, metals, and naturally occurring radioactive material. Management

  9. Isotopic Analysis- Fluid At Fenton Hill HDR Geothermal Area ...

    Open Energy Info (EERE)

    Interactions in the Fenton Hill, New Mexico, Hot Dry Rock Geothermal Systems I. Fluid Mixing and Chemical Geothermometry Additional References Retrieved from "http:...

  10. Isotopic Analysis- Fluid At Coso Geothermal Area (1982) | Open...

    Open Energy Info (EERE)

    Details Location Coso Geothermal Area Exploration Technique Isotopic Analysis- Fluid Activity Date 1982 Usefulness not indicated DOE-funding Unknown Exploration Basis...

  11. Isotopic Analysis- Fluid At Coso Geothermal Area (1990) | Open...

    Open Energy Info (EERE)

    Exploration Activity Details Location Coso Geothermal Area Exploration Technique Isotopic Analysis- Fluid Activity Date 1990 Usefulness not indicated DOE-funding Unknown...

  12. Isotopic Analysis- Fluid At Indian Valley Hot Springs Geothermal...

    Open Energy Info (EERE)

    Details Location Indian Valley Hot Springs Geothermal Area Exploration Technique Isotopic Analysis- Fluid Activity Date 1990 Usefulness not indicated DOE-funding Unknown...

  13. Isotopic Analysis- Fluid At Sierra Valley Geothermal Area (1990...

    Open Energy Info (EERE)

    Activity Details Location Sierra Valley Geothermal Area Exploration Technique Isotopic Analysis- Fluid Activity Date 1990 Usefulness not indicated DOE-funding Unknown...

  14. A Fluid-Inclusion Investigation Of The Tongonan Geothermal Field...

    Open Energy Info (EERE)

    Fluid-Inclusion Investigation Of The Tongonan Geothermal Field, Philippines Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal Article: A Fluid-Inclusion...

  15. FLUID GEOCHEMISTRY AT THE RAFT RIVER GEOTHERMAL FIELD, IDAHO...

    Open Energy Info (EERE)

    the fluid geochemistry in the field is spatially variable and complex, with two distinct deep geothermal fluid types (high vs. low K, Na, Cl, Ca, Li, F concentrations) and two...

  16. Self Potential At Blue Mountain Geothermal Area (Fairbank Engineering...

    Open Energy Info (EERE)

    of this survey was to locate areas of shallow geothermal activity which could be linked to faults that serve as pathways for geothermal fluids. Notes This survey was...

  17. Fluid Inclusion Analysis At Coso Geothermal Area (2005-2006)...

    Open Energy Info (EERE)

    Interpretation of New Wells in the Coso Geothermal Field Dilley, L. M.; Norman, D.I.; Moore, J.; McCulloch, J. (1 January 2006) Fluid Stratigraphy and Permeable Zones of the Coso...

  18. Geothermal Industry Ends 2012 on a High Note | Department of Energy

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

    Ends 2012 on a High Note Geothermal Industry Ends 2012 on a High Note December 18, 2012 - 12:14pm Addthis Year-end highlights include new domestic projects, international development and policy benchmarks Washington, D.C. - The past 12 months saw continued economic challenges for many American industries, including those in the renewable energy field, but the country's geothermal community witnessed a year of growth, both domestically and abroad. The Geothermal Energy Association (GEA) today

  19. Chena Hot Springs Resort - Electric Power Generation Using Geothermal Fluid

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

    Coproduced from Oil and/or Gas Wells | Department of Energy Chena Hot Springs Resort - Electric Power Generation Using Geothermal Fluid Coproduced from Oil and/or Gas Wells Chena Hot Springs Resort - Electric Power Generation Using Geothermal Fluid Coproduced from Oil and/or Gas Wells Chena Hot Springs Resort project presentation at the 2013 peer review meeting in Colorado. chenahotsprings_peerreview2013.pdf (798.26 KB) More Documents & Publications Electrical Power Generation Using

  20. Silica recovery and control in Hawaiian geothermal fluids. Final report

    SciTech Connect (OSTI)

    Thomas, D.M.

    1992-06-01

    A series of experiments was performed to investigate methods of controlling silica in waste geothermal brines produced at the HGP-A Generator Facility. Laboratory testing has shown that the rate of polymerization of silica in the geothermal fluids is highly pH dependent. At brine pH values in excess of 8.5 the suspension of silica polymers flocculated and rapidly precipitated a gelatinous silica mass. Optimum flocculation and precipitation rates were achieved at pH values in the range of 10.5 to 11.5. The addition of transition metal salts to the geothermal fluids similarly increased the rate of polymerization as well as the degree of precipitation of the silica polymer from suspension. A series of experiments performed on the recovered silica solids demonstrated that methanol extraction of the water in the gels followed by critical point drying yielded surface areas in excess of 300 M{sup 2}/g and that treatment of the dried solids with 2 N HCl removed most of the adsorbed impurities in the recovered product. A series of experiments tested the response of the waste brines to mixing with steam condensate and non-condensable gases.The results demonstrated that the addition of condensate and NCG greatly increased the stability of the silica in the geothermal brines. They also indicated that the process could reduce the potential for plugging of reinjection wells receiving waste geothermal fluids from commercial geothermal facilities in Hawaii. Conceptual designs were proposed to apply the gas re-combination approach to the disposal of geothermal waste fluids having a range of chemical compositions. Finally, these designs were applied to the geothermal fluid compositions found at Cerro Prieto, Ahuachapan, and Salton Sea.

  1. Silica recovery and control in Hawaiian geothermal fluids

    SciTech Connect (OSTI)

    Thomas, D.M.

    1992-06-01

    A series of experiments was performed to investigate methods of controlling silica in waste geothermal brines produced at the HGP-A Generator Facility. Laboratory testing has shown that the rate of polymerization of silica in the geothermal fluids is highly pH dependent. At brine pH values in excess of 8.5 the suspension of silica polymers flocculated and rapidly precipitated a gelatinous silica mass. Optimum flocculation and precipitation rates were achieved at pH values in the range of 10.5 to 11.5. The addition of transition metal salts to the geothermal fluids similarly increased the rate of polymerization as well as the degree of precipitation of the silica polymer from suspension. A series of experiments performed on the recovered silica solids demonstrated that methanol extraction of the water in the gels followed by critical point drying yielded surface areas in excess of 300 M{sup 2}/g and that treatment of the dried solids with 2 N HCl removed most of the adsorbed impurities in the recovered product. A series of experiments tested the response of the waste brines to mixing with steam condensate and non-condensable gases.The results demonstrated that the addition of condensate and NCG greatly increased the stability of the silica in the geothermal brines. They also indicated that the process could reduce the potential for plugging of reinjection wells receiving waste geothermal fluids from commercial geothermal facilities in Hawaii. Conceptual designs were proposed to apply the gas re-combination approach to the disposal of geothermal waste fluids having a range of chemical compositions. Finally, these designs were applied to the geothermal fluid compositions found at Cerro Prieto, Ahuachapan, and Salton Sea.

  2. The Latera geothermal system (Italy); Chemical composition of the geothermal fluid and hypotheses on its origin

    SciTech Connect (OSTI)

    Gianelli, G. ); Scandiffio, G. )

    1989-01-01

    The chemistry of the fluid produced in the Latera geothermal field and the petrology of the hydrothermal minerals found in drill cores and cuttings suggest mixing of a hot Na-Cl fluid with fluids circulating in carbonate units. Evidence exists of a deep fluid of a possible magmatic origin. The very high temperature (above 400{sup 0}C) measured in a deep drill hole indicates the presence of a geothermal fluid, decarbonation and dehydration of sedimentary rocks and there may even be at depth a fluid that still has magmatic characteristics. However, this fluid is certainly mixed with Ca-So/sub 4/-HCO/sub 3/ waters coming from the Mesozoic carbonate rocks below the volcanic cover.

  3. High-potential Working Fluids for Next Generation Binary Cycle Geothermal Power Plants

    Broader source: Energy.gov [DOE]

    DOE Geothermal Peer Review 2010 - Presentation. Project objective: Find optimized working fluid/advanced cycle combination for EGS applications.

  4. Fluid Imaging of Enhanced Geothermal Systems

    Broader source: Energy.gov [DOE]

    Project objectives: Attempting to Image EGS Fracture & Fluid Networks; Employing joint Geophysical Imaging Technologies.

  5. Electrical Power Generation Using Geothermal Fluid Co-produced from Oil &

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

    Gas; 2010 Geothermal Technology Program Peer Review Report | Department of Energy Gas; 2010 Geothermal Technology Program Peer Review Report Electrical Power Generation Using Geothermal Fluid Co-produced from Oil & Gas; 2010 Geothermal Technology Program Peer Review Report DOE 2010 Geothermal Technologies Program Peer Review lowtemp_012_karl.pdf (247.08 KB) More Documents & Publications GRED Drilling Award … GRED III Phase II; 2010 Geothermal Technology Program Peer Review Report

  6. Tailored Working Fluids for Enhanced Binary Geothermal Power Plants

    SciTech Connect (OSTI)

    Mahmoud, Ahmad

    2013-01-29

    United Technologies Research Center (UTRC), in collaboration with the Georgia Institute of Technology and the National Institute of Standards and Technology will evaluate and develop fundamental and component level models, conduct experiments and generate data to support the use of mixed or enhanced working fluids for geothermal power generation applications.

  7. Analytical Modeling At Valles Caldera - Redondo Geothermal Area...

    Open Energy Info (EERE)

    fluid data from 10 wells were used to better understand the fluid compostion and thermal history of the Redonodo (Baca) geothermal reservoir. Notes Results indicate the presence...

  8. Isotopic Analysis At Valles Caldera - Redondo Geothermal Area...

    Open Energy Info (EERE)

    fluid data from 10 wells were used to better understand the fluid compostion and thermal history of the Redonodo (Baca) geothermal reservoir. Notes Results indicate the presence...

  9. Isotopic Analysis- Fluid At Long Valley Caldera Geothermal Area...

    Open Energy Info (EERE)

    of water in the wellbore, and identify magmatic gases present in the well fluids. Notes Water samples were collected from the pump discharge line at the surface during each flow...

  10. Isotopic Analysis- Fluid At Dixie Valley Geothermal Area (Kennedy...

    Open Energy Info (EERE)

    suggest that helium isotopes are the best and possibly the only indication of deep permeability where high temperature fluids are masked beneath a cold reservoir. Notes 3He4He...

  11. Use of Geophysical Techniques to Characterize Fluid Flow in a Geothermal

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

    Reservoir; 2010 Geothermal Technology Program Peer Review Report | Department of Energy Reservoir; 2010 Geothermal Technology Program Peer Review Report Use of Geophysical Techniques to Characterize Fluid Flow in a Geothermal Reservoir; 2010 Geothermal Technology Program Peer Review Report DOE 2010 Geothermal Technologies Program Peer Review reservoir_029_revil.pdf (195.46 KB) More Documents & Publications Detection and Characterization of Natural and Induced Fractures for the

  12. Request for Information explores mineral recovery from geothermal fluids

    Broader source: Energy.gov [DOE]

    The DOE Geothermal Technologies Office (GTO) is seeking input on ideas that encourage geothermal development by exploring innovations in extracting critical materials found in geothermal brines....

  13. The feasibility of recovering medium to heavy oil using geopressured- geothermal fluids

    SciTech Connect (OSTI)

    Negus-de Wys, J.; Kimmell, C.E.; Hart, G.F.; Plum, M.M.

    1991-09-01

    The feasibility, economics and environmental concerns of producing more domestic oil using thermal enhanced oil recovery (TEOR) are reviewed and the unique nature of geopressured-geothermal (GPGT) fluids for thermal recovery are outlined. Current methods of TEOR are briefly discussed and it is noted that these methods are presently under scrutiny by both federal and state air quality agencies; and moreover, they often involve costly operational and mechanical problems associated with heating water on the surface for injection into the target reservoir. The characteristics of the GPGT resources as seen through previous Department of Energy (DOE) studies from sites in Louisiana and Texas are discussed. These studies indicate sufficient quantities of GPGT fluids can be produced to sustain a TEOR project. The Alworth Field in the south Texas Mirando Trend is proposed as a TEOR pilot site. The target reservoirs for injection of the GPGT fluids are the Jackson and Yegua sandstones of the upper Eocene Epoch. The reservoirs contain an estimated 4 MMbbls of heavy oil in place (OIP) (18.6{degree}API) of which it is estimated that at least 1 MMbbls could be recovered by TEOR. The problems associated with using the GPGT fluids for TEOR include those normally associated with hot water flooding but in addition the reaction of the brine from the geopressured-geothermal reservoir with the target reservoir is uncertain. Under the elevated temperatures associated with GPGT TEOR, actual increased porosity and permeability are possible. 120 refs., 40 figs., 13 tabs.

  14. Enhanced Geothermal Systems (EGS) with CO2as Heat Transmission Fluid

    Broader source: Energy.gov [DOE]

    The overall objective of the research is to explore the feasibility of operating enhanced geothermal systems (EGS) with CO2as heat transmission fluid.

  15. CO2-based mixtures as working fluids for geothermal turbines.

    SciTech Connect (OSTI)

    Wright, Steven Alan; Conboy, Thomas M.; Ames, David E.

    2012-01-01

    Sandia National Laboratories is investigating advanced Brayton cycles using supercritical working fluids for application to a variety of heat sources, including geothermal, solar, fossil, and nuclear power. This work is centered on the supercritical CO{sub 2} (S-CO{sub 2}) power conversion cycle, which has the potential for high efficiency in the temperature range of interest for these heat sources and is very compact-a feature likely to reduce capital costs. One promising approach is the use of CO{sub 2}-based supercritical fluid mixtures. The introduction of additives to CO{sub 2} alters the equation of state and the critical point of the resultant mixture. A series of tests was carried out using Sandia's supercritical fluid compression loop that confirmed the ability of different additives to increase or lower the critical point of CO{sub 2}. Testing also demonstrated that, above the modified critical point, these mixtures can be compressed in a turbocompressor as a single-phase homogenous mixture. Comparisons of experimental data to the National Institute of Standards and Technology (NIST) Reference Fluid Thermodynamic and Transport Properties (REFPROP) Standard Reference Database predictions varied depending on the fluid. Although the pressure, density, and temperature (p, {rho}, T) data for all tested fluids matched fairly well to REFPROP in most regions, the critical temperature was often inaccurate. In these cases, outside literature was found to provide further insight and to qualitatively confirm the validity of experimental findings for the present investigation.

  16. New Working Fluids Cut a Wider Swath of Geothermal Reserves | Department of

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

    Energy Working Fluids Cut a Wider Swath of Geothermal Reserves New Working Fluids Cut a Wider Swath of Geothermal Reserves December 17, 2013 - 12:00am Addthis Scientists at the Energy Department's Pacific Northwest National Laboratory (PNNL) have made a commercially viable discovery: how to capture substantially more heat from low-temperature resources. In a market where binary working fluids are costly and traditionally inefficient, this advance harnesses a much larger sector of near-term

  17. Stress and Fluid-Flow Interaction for the Coso Geothermal Field...

    Open Energy Info (EERE)

    Fluid-Flow Interaction for the Coso Geothermal Field Derived from 3D Numerical Models Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference Proceedings:...

  18. Geothermal

    Office of Scientific and Technical Information (OSTI)

    Geothermal Geothermal Legacy Collection Search the Geothermal Legacy Collection Search For Terms: Find + Advanced Search Advanced Search All Fields: Title: Full Text: ...

  19. Isotopic Analysis- Fluid At Fenton Hill HDR Geothermal Area ...

    Open Energy Info (EERE)

    (1981) Geology, Water Geochemistry And Geothermal Potential Of The Jemez Springs Area, Canon De San Diego, New Mexico Additional References Retrieved from "http:en.openei.orgw...

  20. Isotopic Analysis- Fluid At Fenton Hill HDR Geothermal Area ...

    Open Energy Info (EERE)

    to other geothermal systems hosted within sedimentary rocks, suggesting that organic carbon and nitrogen in Paleozoic and Miocene strata were depleted during 13 million years...

  1. Electric Power Generation Using Geothermal Fluid Coproduced from...

    Open Energy Info (EERE)

    and PWPS are proving that geothermal energy productioncan coexist alongside current oil development operations.Chena Hot Springs Resort and UTRC have previously...

  2. Isotopic Analysis- Fluid At Lightning Dock Geothermal Area (Witcher...

    Open Energy Info (EERE)

    Usefulness useful DOE-funding Unknown Exploration Basis Part of the Geothermal Resource Evaluation and Definition (GRED) Program administered by DOE-AAO under Cooperative...

  3. Fluid Imaging of Enhanced Geothermal Systems through Joint 3D...

    Open Energy Info (EERE)

    reservoirs that have been created to extract economical amounts of heat from low permeability andor porosity geothermal resources. Critical to the success of EGS is the...

  4. Recent Developments in Geothermal Drilling Fluids Kelsey, J....

    Office of Scientific and Technical Information (OSTI)

    M. J.; Clements, W. R.; Hilscher, L. W.; Remont, L. J.; Matula, G. W.; Balley, D. N. 01 COAL, LIGNITE, AND PEAT; 15 GEOTHERMAL ENERGY; BENTONITE; BROWN COAL; DRILLING; DRILLING...

  5. Gas Analysis Of Geothermal Fluid Inclusions- A New Technology...

    Open Energy Info (EERE)

    6,000, and the turn around time is a few weeks. Authors David I. Norman and Joseph Moore Published Geothermal Technologies Legacy Collection, 2004 DOI Not Provided Check for...

  6. Isotopic Analysis Fluid At Coso Geothermal Area (1997) | Open...

    Open Energy Info (EERE)

    may have recently input into the system from magmatic sources. References Nimz, G. J.; Moore, J. N.; Kasameyer, P. W. (1 July 1997) 36ClCl ratios in geothermal systems-...

  7. Fluid Stratigraphy and Permeable Zones of the Coso Geothermal...

    Open Energy Info (EERE)

    zones can be targeted in the future Authors Dilley, L. M.; Norman, D.I.; Moore, J.; McCulloch and J. Published Geothermal Resource Council Transactions 2006, 112006 DOI...

  8. FLUID STRATIGRAPHY OF THE COSO GEOTHERMAL RESERVOIR | Open Energy...

    Open Energy Info (EERE)

    cross-sections developed using this method. Authors Dilley, L.M.; Norman, D.I.; Moore, J.; McCullouch and J. Published PROCEEDINGS, Thirty-First Workshop on Geothermal Reservoir...

  9. Fluid Inclusion Analysis At Coso Geothermal Area (2004) | Open...

    Open Energy Info (EERE)

    DOE-funding Unknown Exploration Basis 1) To determine if analyses of fluid propene and propane species in fluid inclusions can be used to interpret fluid type, history, or process....

  10. Geothermal

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

    Stationary Power/Energy Conversion Efficiency/Geothermal Geothermal Tara Camacho-Lopez 2016-03-16T19:31:15+00:00 geothermal_leamstest Sandia's work in drilling technology is aimed at reducing the cost and risk associated with drilling in harsh, subterranean environments. The historical focus of the drilling research has been directed at significantly expanding the nation's utilization of geothermal energy. This focus in geothermal related drilling research is the search for practical solutions

  11. Geothermal Energy News

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

    geothermal900546 Geothermal Energy News en EERE Announces Up to 4 Million for Critical Materials Recovery from Geothermal Fluids http:energy.goveerearticles...

  12. Isotopic Analysis-Fluid At Long Valley Caldera Geothermal Area...

    Open Energy Info (EERE)

    Estimate deep reservoir temperature Notes The oxygen isotope compositions of dissolved sulfate and water from hot springs and shallow drillholes have been tested. Methods are...

  13. Isotopic Analysis-Fluid At Yellowstone Caldera Geothermal Region...

    Open Energy Info (EERE)

    Estimate deep reservoir temperature Notes The oxygen isotope compositions of dissolved sulfate and water from hot springs and shallow drillholes have been tested. Methods are...

  14. Trace element and isotope geochemistry of geothermal fluids, East Rift Zone, Kilauea, Hawaii

    SciTech Connect (OSTI)

    West, H.B.; Delanoy, G.A.; Thomas, D.M. . Hawaii Inst. of Geophysics); Gerlach, D.C. ); Chen, B.; Takahashi, P.; Thomas, D.M. Evans and Associates, Redwood City, CA )

    1992-01-01

    A research program has been undertaken in an effort to better characterize the composition and the precipitation characteristic of the geothermal fluids produced by the HGP-A geothermal well located on the Kilauea East Rift Zone on the Island of Hawaii. The results of these studies have shown that the chemical composition of the fluids changed over the production life of the well and that the fluids produced were the result of mixing of at least two, and possibly three, source fluids. These source fluids were recognized as: a sea water composition modified by high temperature water-rock reactions; meteoric recharge; and a hydrothermal fluid that had been equilibrated with high temperature reservoir rocks and magmatic volatiles. Although the major alkali and halide elements show clearly increasing trends with time, only a few of the trace transition metals show a similar trend. The rare earth elements, were typically found at low concentrations and appeared to be highly variable with time. Studies of the precipitation characteristics of silica showed that amorphous silica deposition rates were highly sensitive to fluid pH and that increases in fluid pH above about 8.5 could flocculate more than 80% of the suspended colloidal silica in excess of its solubility. Addition of transition metal salts were also found to enhance the recovery fractions of silica from solution. The amorphous silica precipitate was also found to strongly scavenge the alkaline earth and transition metal ions naturally present in the brines; mild acid treatments were shown to be capable of removing substantial fractions of the scavenged metals from the silica flocs yielding a moderately pure gelatinous by-product. Further work on the silica precipitation process is recommended to improve our ability to control silica scaling from high temperature geothermal fluids or to recover a marketable silica by-product from these fluids prior to reinjection.

  15. ORGANIC SPECIES IN GEOTHERMAL WATERS IN LIGHT OF FLUID INCLUSION...

    Open Energy Info (EERE)

    that indicate H2 concentrations > 0.001 mol % typically have ethane > ethylene, propane > propylene, and butane > butylene. There are three end member fluid compositions:...

  16. Fluid Inclusion Analysis At Coso Geothermal Area (2003) | Open...

    Open Energy Info (EERE)

    that indicate H2 concentrations > 0.001 mol % typically have ethane > ethylene, propane > propylene, and butane > butylene. There are three end member fluid compositions...

  17. Fluid Inclusion Analysis At Coso Geothermal Area (1996) | Open...

    Open Energy Info (EERE)

    that the interior of the system is still undergoing heating. References Lutz, S. J.; Moore, J. N.; Copp, J. F. (24 January 1996) Integrated mineralogical and fluid inclusion...

  18. Isotopic Analysis- Fluid At Coso Geothermal Area (2007) | Open...

    Open Energy Info (EERE)

    of the coso east flank hydrothermal fluids: implications for the location and nature of the heat source Additional References Retrieved from "http:en.openei.orgw...

  19. Isotopic Constraints on the Chemical Evolution of Geothermal Fluids, Long Valley, CA

    SciTech Connect (OSTI)

    Brown, Shaun; Kennedy, Burton; DePaolo, Donald; Evans, William

    2008-08-01

    A spatial survey of the chemical and isotopic composition of fluids from the Long Valley hydrothermal system was conducted. Starting at the presumed hydrothermal upwelling zone in the west moat of the caldera, samples were collected from the Casa Diablo geothermal field and a series of monitoring wells defining a nearly linear, ~;;14 km long, west-to-east trend along the proposed fluid flow path (Sorey et al., 1991). Samples were analyzed for the isotopes of water, Sr, Ca, and noble gases, the concentrations of major cations and anions and total CO2. Our data confirm earlier models in which the variations in water isotopes along the flow path reflect mixing of a single hydrothermal fluid with local groundwater. Variations in Sr data are poorly constrained and reflect fluid mixing, multiple fluid-pathways or water-rock exchange along the flow path as suggested by Goff et al. (1991). Correlated variations among total CO2, noble gases and the concentration and isotopic composition of Ca suggest progressive fluid degassing (loss of CO2, noble gases) driving calcite precipitation as the fluid flows west-to-east across the caldera. This is the first evidence that Ca isotopes may trace and provide definitive evidence of calcite precipitation along fluid flow paths in geothermal systems.

  20. Technologies for Extracting Valuable Metals and Compounds from Geothermal Fluids

    SciTech Connect (OSTI)

    Harrison, Stephen

    2014-04-30

    Executive Summary Simbol Materials studied various methods of extracting valuable minerals from geothermal brines in the Imperial Valley of California, focusing on the extraction of lithium, manganese, zinc and potassium. New methods were explored for managing the potential impact of silica fouling on mineral extraction equipment, and for converting silica management by-products into commercial products.` Studies at the laboratory and bench scale focused on manganese, zinc and potassium extraction and the conversion of silica management by-products into valuable commercial products. The processes for extracting lithium and producing lithium carbonate and lithium hydroxide products were developed at the laboratory scale and scaled up to pilot-scale. Several sorbents designed to extract lithium as lithium chloride from geothermal brine were developed at the laboratory scale and subsequently scaled-up for testing in the lithium extraction pilot plant. Lithium The results of the lithium studies generated the confidence for Simbol to scale its process to commercial operation. The key steps of the process were demonstrated during its development at pilot scale: 1. Silica management. 2. Lithium extraction. 3. Purification. 4. Concentration. 5. Conversion into lithium hydroxide and lithium carbonate products. Results show that greater than 95% of the lithium can be extracted from geothermal brine as lithium chloride, and that the chemical yield in converting lithium chloride to lithium hydroxide and lithium carbonate products is greater than 90%. The product purity produced from the process is consistent with battery grade lithium carbonate and lithium hydroxide. Manganese and zinc Processes for the extraction of zinc and manganese from geothermal brine were developed. It was shown that they could be converted into zinc metal and electrolytic manganese dioxide after purification. These processes were evaluated for their economic potential, and at the present time Simbol

  1. Fluid Inclusion Analysis At Coso Geothermal Area (1999) | Open...

    Open Energy Info (EERE)

    Devil's Kitchen fumarole area and from Coso production wells. References Lutz, S.J.; Moore, J.N.; Adams, M.C.; Norman, D.I. (1 January 1999) TRACING FLUID SOURCES IN THE COSO...

  2. Fluid Inclusion Analysis At Coso Geothermal Area (2004-2005)...

    Open Energy Info (EERE)

    and much fine scale detail when the logs are analyzed in detail. References Dilley, L. M.; Norman, D.I.; Berard, B. (1 January 2004) FLUID INCLUSION STRATIGRAPHY: NEW METHOD...

  3. Fluid Inclusion Analysis At Coso Geothermal Area (Norman & Moore...

    Open Energy Info (EERE)

    done by our CFS (crushfast-scan) method (Norman 1996) show that chips have a high density of homogeneous fluid inclusions. Analyses were averaged and plotted verses depth, and...

  4. Review and evaluation of literature on testing of chemical additives for scale control in geothermal fluids. Final report

    SciTech Connect (OSTI)

    Crane, C.H.; Kenkeremath, D.C.

    1981-01-01

    A selected group of reported tests of chemical additives in actual geothermal fluids are reviewed and evaluated to summarize the status of chemical scale-control testing and identify information and testing needs. The task distinguishes between scale control in the cooling system of a flash plant and elsewhere in the utilization system due to the essentially different operating environments involved. Additives for non-cooling geothermal fluids are discussed by scale type: silica, carbonate, and sulfide.

  5. Joint inversion of electrical and seismic data for Fracture char. and Imaging of Fluid Flow in Geothermal Systems

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

    Joint inversion of electrical and seismic data for Fracture char. and Imaging of Fluid Flow in Geothermal Systems Michael Batzle, PI Colorado School of Mines Track Name: Fluid Imaging Project Officer: Eric Hess Total Project Funding: $1,246, 579 April 22, 2013 This presentation does not contain any proprietary confidential, or otherwise restricted information. 2 | US DOE Geothermal Office eere.energy.gov Relevance/Impact of Research Project objectives * Use combined inversion of geophysical data

  6. Chemical behaviour of geothermal silica after precipitation from geothermal fluids with inorganic flocculating agents at the Hawaii Geothermal Project Well-A (HGP-A)

    SciTech Connect (OSTI)

    De Carlo, E.H.

    1987-01-01

    The report summarizes the results of experiments dealing with the problem of removal of waste-silica from spent fluids at the experimental power generating facility in the Puna District of the island of Hawaii. Geothermal discharges from HGP-A represent a mixture of meteoric and seawaters which has reacted at depth with basalts from the Kilauea East Rift Zone under high pressure and temperature. After separation of the steam phase of the geothermal fluid from the liquid phase and a final flashing stage to 100 degrees Celsius and atmospheric pressure, the concentration of the silica increases to approximately 1100 mg/L. This concentration represents five to six times the solubility of amorphous silica in this temperature range. We have evaluated and successfully developed bench scale techniques utilizing adsorptive bubble flotation for the removal of colloidal silica from the spent brine discharge in the temperature range of 60 to 90 degrees C. The methods employed resulted in recovery of up to 90% of the silica present above its amorphous solubility in the experimental temperature range studied.

  7. Environmentally Friendly, Rheoreversible, Hydraulic-fracturing Fluids for Enhanced Geothermal Systems

    SciTech Connect (OSTI)

    Shao, Hongbo; Kabilan, Senthil; Stephens, Sean A.; Suresh, Niraj; Beck, Anthon NR; Varga, Tamas; Martin, Paul F.; Kuprat, Andrew P.; Jung, Hun Bok; Um, Wooyong; Bonneville, Alain; Heldebrant, David J.; Carroll, KC; Moore, Joseph; Fernandez, Carlos A.

    2015-07-01

    Cost-effective creation of high-permeability reservoirs inside deep crystalline bedrock is the primary challenge for the feasibility of enhanced geothermal systems (EGS). Current reservoir stimulation entails adverse environmental impacts and substantial economic costs due to the utilization of large volumes of water “doped” with chemicals including rheology modifiers, scale and corrosion inhibitors, biocides, friction reducers among others where, typically, little or no information of composition and toxicity is disclosed. An environmentally benign, CO2-activated, rheoreversible fracturing fluid has recently been developed that significantly enhances rock permeability at effective stress significantly lower than current technology. We evaluate the potential of this novel fracturing fluid for application on geothermal sites under different chemical and geomechanical conditions, by performing laboratory-scale fracturing experiments with different rock sources under different confining pressures, temperatures, and pH environments. The results demonstrate that CO2-reactive aqueous solutions of environmentally amenable Polyallylamine (PAA) represent a highly versatile fracturing fluid technology. This fracturing fluid creates/propagates fracture networks through highly impermeable crystalline rock at significantly lower effective stress as compared to control experiments where no PAA was present, and permeability enhancement was significantly increased for PAA compared to conventional hydraulic fracturing controls. This was evident in all experiments, including variable rock source/type, operation pressure and temperature (over the entire range for EGS applications), as well as over a wide range of formation-water pH values. This versatile novel fracturing fluid technology represents a great alternative to industrially available fracturing fluids for cost-effective and competitive geothermal energy production.

  8. Notes

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

    Notes Notes Accomodations at Argonne The Argonne contact person for the NUG Meeting is Mike Minkoff of the Mathematics and Computer Science Division. His phone number is (630) 252-7234. Last edited: 2011-04-01 11:41

  9. Variations in dissolved gas compositions of reservoir fluids from the Coso geothermal field

    SciTech Connect (OSTI)

    Williams, Alan E.; Copp, John F.

    1991-01-01

    Gas concentrations and ratios in 110 analyses of geothermal fluids from 47 wells in the Coso geothermal system illustrate the complexity of this two-phase reservoir in its natural state. Two geographically distinct regions of single-phase (liquid) reservoir are present and possess distinctive gas and liquid compositions. Relationships in soluble and insoluble gases preclude derivation of these waters from a common parent by boiling or condensation alone. These two regions may represent two limbs of fluid migration away from an area of two-phase upwelling. During migration, the upwelling fluids mix with chemically evolved waters of moderately dissimilar composition. CO{sub 2} rich fluids found in the limb in the southeastern portion of the Coso field are chemically distinct from liquids in the northern limb of the field. Steam-rich portions of the reservoir also indicate distinctive gas compositions. Steam sampled from wells in the central and southwestern Coso reservoir is unusually enriched in both H{sub 2}S and H{sub 2}. Such a large enrichment in both a soluble and insoluble gas cannot be produced by boiling of any liquid yet observed in single-phase portions of the field. In accord with an upflow-lateral mixing model for the Coso field, at least three end-member thermal fluids having distinct gas and liquid compositions appear to have interacted (through mixing, boiling and steam migration) to produce the observed natural state of the reservoir.

  10. Stimuli Responsive/Rheoreversible Hydraulic Fracturing Fluids for Enhanced Geothermal Energy Production (Part II)

    SciTech Connect (OSTI)

    Bonneville, Alain; Jung, Hun Bok; Shao, Hongbo; Kabilan, Senthil; Um, Wooyong; Carroll, Kenneth C.; Varga, Tamas; Suresh, Niraj; Stephens, Sean A.; Fernandez, Carlos A.

    2014-12-14

    We have used an environmentally friendly and recyclable hydraulic fracturing fluid - diluted aqueous solutions of polyallylamine or PAA – for reservoir stimulation in Enhanced Geothermal System (EGS). This fluid undergoes a controlled and large volume expansion with a simultaneous increase in viscosity triggered by CO2 at EGS temperatures. We are presenting here the results of laboratory-scale hydraulic fracturing experiment using the fluid on small cylindrical rock cores (1.59 cm in diameter and 5.08 cm in length) from the Coso geothermal field in California. Rock samples consisted of Mesozoic diorite metamorphosed to greenschist facies. The experiments were conducted on 5 samples for realistic ranges of pressures (up to 275 bar) and temperatures (up to 210 °C) for both the rock samples and the injected fluid. After fracturing, cores were subjected to a CO2 leakage test, injection of KI solution, and X-ray microtomography (XMT) scanning to examine the formation and distribution of fractures. The design and conduct of these experiments will be presented and discussed in details. Based on the obtained XMT images, Computational Fluid Dynamics (CFD) simulations were then performed to visualize hydraulic fractures and compute the bulk permeability. OpenFOAM (OpenCFD Ltd., Reading, UK), was used to solve the steady state simulation. The flow predictions, based upon the laminar, 3-D, incompressible Navier-Stokes equations for fluid mass and momentum, show the remarkable stimulation of the permeability in the core samples and demonstrate the efficiency of such a CO2 triggered fluid in EGS.

  11. Notes

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

    Notes Notes ERSUG Meeting Summary Notes, November 15, 1999 Here are some highlights from the discussions (excepting the items contributed by ERSUG Chair, Bas Bramms below): During the state of NERSC presentation by Jim Craw a primary topic of discussion was the issue of the processing capabilities of the PVP cluster. Since the upgrade of the batch system processors to SV1s, some concern has been expressed about the relatively poorer processing capabilities of the J90SE processors on the

  12. Geothermal

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

    Geothermal Louise Vickery, General Manager, Renewable Futures at the Australian Renewable Energy Agency (ARENA). Permalink Gallery Australian Renewable-Energy Official Visits Sandia Concentrating Solar Power, EC, Energy, Geothermal, News, News & Events, Photovoltaic, Renewable Energy, Solar, Water Power, Wind Energy Australian Renewable-Energy Official Visits Sandia Louise Vickery, General Manager, Renewable Futures at the Australian Renewable Energy Agency (ARENA). At the end of June,

  13. Enhanced Geothermal Systems Research and Development: Models of Subsurface Chemical Processes Affecting Fluid Flow

    SciTech Connect (OSTI)

    Moller, Nancy; Weare J. H.

    2008-05-29

    Successful exploitation of the vast amount of heat stored beneath the earth’s surface in hydrothermal and fluid-limited, low permeability geothermal resources would greatly expand the Nation’s domestic energy inventory and thereby promote a more secure energy supply, a stronger economy and a cleaner environment. However, a major factor limiting the expanded development of current hydrothermal resources as well as the production of enhanced geothermal systems (EGS) is insufficient knowledge about the chemical processes controlling subsurface fluid flow. With funding from past grants from the DOE geothermal program and other agencies, we successfully developed advanced equation of state (EOS) and simulation technologies that accurately describe the chemistry of geothermal reservoirs and energy production processes via their free energies for wide XTP ranges. Using the specific interaction equations of Pitzer, we showed that our TEQUIL chemical models can correctly simulate behavior (e.g., mineral scaling and saturation ratios, gas break out, brine mixing effects, down hole temperatures and fluid chemical composition, spent brine incompatibilities) within the compositional range (Na-K-Ca-Cl-SO4-CO3-H2O-SiO2-CO2(g)) and temperature range (T < 350°C) associated with many current geothermal energy production sites that produce brines with temperatures below the critical point of water. The goal of research carried out under DOE grant DE-FG36-04GO14300 (10/1/2004-12/31/2007) was to expand the compositional range of our Pitzer-based TEQUIL fluid/rock interaction models to include the important aluminum and silica interactions (T < 350°C). Aluminum is the third most abundant element in the earth’s crust; and, as a constituent of aluminosilicate minerals, it is found in two thirds of the minerals in the earth’s crust. The ability to accurately characterize effects of temperature, fluid mixing and interactions between major rock-forming minerals and hydrothermal and

  14. Mixtures of SF6 CO2 as working fluids for geothermal power plants

    SciTech Connect (OSTI)

    Yin, Hebi; Sabau, Adrian S; Conklin, Jim; McFarlane, Joanna; Qualls, A L

    2013-01-01

    In this paper, supercritical/transcritical thermodynamic cycles using mixtures of SF6 CO2 as working fluids were investigated for geothermal power plants. The system of equations that described the thermodynamic cycle was solved using a Newton-Raphson method. This approach allows a high computational efficiency even when thermophysical properties of the working fluid depend strongly on the temperature and pressure. The thermophysical properties of the mixtures were obtained from National Institute of Standards and Technology (NIST) REFPROP software and constituent cubic equations. The local heat transfer coefficients in the heat exchangers were calculated based on the local properties of the working fluid, geothermal brine, and cooling water. The heat exchanger areas required were calculated. Numerical simulation results presented for different cycle configurations were used to assess the effects of the SF6 fraction in CO2, brine temperature, and recuperator size on the cycle thermal efficiency, and size of heat exchangers for the evaporator and condenser. Optimal thermodynamic cycle efficiencies were calculated to be approximately 13 and 15% mole content of SF6 in a CO2- SF6 mixture for a Brayton cycle and a Rankine cycle, respectively.

  15. Review and problem definition of water/rock reactions associated with injection of spent geothermal fluids from a geothermal plant into aquifers

    SciTech Connect (OSTI)

    Elders, W.A.

    1986-07-01

    Among the technical problems faced by the burgeoning geothermal industry is the disposal of spent fluids from power plants. Except in unusual circumstances the normal practice, especially in the USA, is to pump these spent fluids into injection wells to prevent contamination of surface waters, and possibly in some cases, to reduce pressure drawdown in the producing aquifers. This report is a survey of experience in geothermal injection, emphasizing geochemical problems, and a discussion of approaches to their possible mitigation. The extraction of enthalpy from geothermal fluid in power plants may cause solutions to be strongly supersaturated in various dissolved components such as silica, carbonates, sulfates, and sulfides. Injection of such supersaturated solutions into disposal wells has the potential to cause scaling in the well bores and plugging of the aquifers, leading to loss of injectivity. Various aspects of the geochemistry of geothermal brines and their potential for mineral formation are discussed, drawing upon a literature survey. Experience of brine treatment and handling, and the economics of mineral extraction are also addressed in this report. Finally suggestions are made on future needs for possible experimental, field and theoretical studies to avoid or control mineral scaling.

  16. Notes

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

    Notes Notes Why the June 1995 ERSUG Meeting is Important Bill McCurdy describes below a competitive process through which a decision will be made by MICS Division (formerly the OSC) in the June, 1995 timeframe to: (1) possibly move NERSC to Lawrence Berkeley National Laboratory, and (2) redefine to some extent the mission of the Center. All of this would be effected within a significantly reduced cost envelope. The LLNL proposal to keep NERSC where it is and the LBL proposal may soon be

  17. Notes

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

    Notes Notes Live Media Streaming via RealPlayer Media streaming of these lectures will be provided via RealPlayer. Users of Windows- or Macintosh-based computers will be able to see and hear the presentation by way of the following procedures. 1. Download and open the slide files onto your computer. 2. Make certain you have the current version of RealPlayer installed. These are available at the Real Free Player Download web site 3. Start the RealPlayer application, and then enter the following

  18. High-potential Working Fluids for Next Generation Binary Cycle Geothermal Power Plants

    SciTech Connect (OSTI)

    Zia, Jalal; Sevincer, Edip; Chen, Huijuan; Hardy, Ajilli; Wickersham, Paul; Kalra, Chiranjeev; Laursen, Anna Lis; Vandeputte, Thomas

    2013-06-29

    A thermo-economic model has been built and validated for prediction of project economics of Enhanced Geothermal Projects. The thermo-economic model calculates and iteratively optimizes the LCOE (levelized cost of electricity) for a prospective EGS (Enhanced Geothermal) site. It takes into account the local subsurface temperature gradient, the cost of drilling and reservoir creation, stimulation and power plant configuration. It calculates and optimizes the power plant configuration vs. well depth. Thus outputs from the model include optimal well depth and power plant configuration for the lowest LCOE. The main focus of this final report was to experimentally validate the thermodynamic properties that formed the basis of the thermo-economic model built in Phase 2, and thus build confidence that the predictions of the model could be used reliably for process downselection and preliminary design at a given set of geothermal (and/or waste heat) boundary conditions. The fluid and cycle downselected was based on a new proprietary fluid from a vendor in a supercritical ORC cycle at a resource condition of 200�C inlet temperature. The team devised and executed a series of experiments to prove the suitability of the new fluid in realistic ORC cycle conditions. Furthermore, the team performed a preliminary design study for a MW-scale turbo expander that would be used for a supercritical ORC cycle with this new fluid. The following summarizes the main findings in the investigative campaign that was undertaken: 1. Chemical compatibility of the new fluid with common seal/gasket/Oring materials was found to be problematic. Neoprene, Viton, and silicone materials were found to be incompatible, suffering chemical decomposition, swelling and/or compression set issues. Of the materials tested, only TEFLON was found to be compatible under actual ORC temperature and pressure conditions. 2. Thermal stability of the new fluid at 200�C and 40 bar was found to be acceptable after 399

  19. Drilling fluids and lost circulation in hot dry rock geothermal wells at Fenton Hill

    SciTech Connect (OSTI)

    Nuckols, E.B.; Miles, D.; Laney, R.; Polk, G.; Friddle, H.; Simpson, G.; Baroid, N.L.

    1981-01-01

    Geothermal hot dry rock drilling activities at Fenton Hill in the Jemez Mountains of northern New Mexico encountered problems in designing drilling fluids that will reduce catastrophic lost circulation. Four wells (GT-2, EE-1, EE-2, and EE-3) penetrated 733 m (2405 ft) of Cenozoic and Paleozoic sediments and Precambrian crystalline rock units to +4572 m (+15,000 ft). The Cenozoic rocks consist of volcanics (rhyolite, tuff, and pumice) and volcaniclastic sediments. Paleozoic strata include Permian red beds (Abo Formation) and the Pennsylvanian Madera and Sandia Formations, which consist of massive limestones and shales. Beneath the Sandia Formation are igneous and metamorphic rocks of Precambrian age. The drilling fluid used for the upper sedimentary formations was a polymeric flocculated bentonite drilling fluid. Severe loss of circulation occurred in the cavernous portions of the Sandia limestones. The resultant loss of hydrostatic head caused sloughing of the Abo and of some beds within the Madera Formation. Stuck pipe, repetitive reaming, poor casing cement jobs and costly damage to the intermediate casing resulted. The Precambrian crystalline portion of the EE-2 and EE-3 wells were directionally drilled at a high angle, and drilled with water as the primary circulating fluid. Due to high temperatures (approximately 320/sup 0/C (608/sup 0/F) BHT) and extreme abrasiveness of the deeper part of the Precambrian crystalline rocks, special problems of corrosion inhibition and of torque friction were incurred.

  20. Project Title: Small Scale Electrical Power Generation from Heat Co-Produced in Geothermal Fluids: Mining Operation

    SciTech Connect (OSTI)

    Clark, Thomas M; Erlach, Celeste

    2014-12-30

    Demonstrate the technical and economic feasibility of small scale power generation from low temperature co-produced fluids. Phase I is to Develop, Design and Test an economically feasible low temperature ORC solution to generate power from lower temperature co-produced geothermal fluids. Phase II &III are to fabricate, test and site a fully operational demonstrator unit on a gold mine working site and operate, remotely monitor and collect data per the DOE recommended data package for one year.

  1. Carbonyl sulphide (COS) in geothermal fluids; An example from the Larderello field (Italy)

    SciTech Connect (OSTI)

    Chiodini, G. ); Cioni, R.; Raco, B. ); Scandiffio, G. )

    1991-01-01

    This paper reports that the carbonyl sulphide (COS) content in the fluids of 12 wells in the Larderello geothermal field ranges from 0.005 to 0.1 {mu}m mol/mol. Measured data are comparable with the theoretical concentrations, considering a homogeneous gas phase at the temperature and pressure conditions of the reservoir. However, the low temperature dependence of equilibrium constants of reactions involving COS prevents us from using them as geothermometers. On the contrary, P{sub CO{sub 2}} estimates in the gas equilibration zone can be inferred from the H{sub 2}S/COS ratio. The calculated CO{sub 2} partial pressures are comparable with those estimated by means of the H{sub 2}/CO ratio.

  2. Numerical studies of fluid-rock interactions in EnhancedGeothermal...

    Office of Scientific and Technical Information (OSTI)

    Subject: 15; CARBON; DISSOLUTION; ENERGY RECOVERY; GEOTHERMAL SYSTEMS; HEAT EXTRACTION; HEAT TRANSFER; POWER GENERATION; PRECIPITATION; RESERVOIR ENGINEERING; STORAGE; TRANSPORT; ...

  3. Fluid Inclusion Analysis | Open Energy Information

    Open Energy Info (EERE)

    Geothermal Area (2004) Coso Geothermal Area 2004 2004 GEOTHERMAL FLUID PROPENE AND PROPANE: INDICATORS OF FLUID GEOLOGY AND MINERAL PARAGENESIS STUDY WITHIN THE COSO-EGS...

  4. geothermal infographic 7.14.2014

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

    ... Geothermal Fluid Loop Working Fluid Loop Binary Power Plant Steam is collected from the geothermal reservoir. Steam drives a turbine, the turbine powers a generator, the generator ...

  5. Thermodynamic properties of a geothermal working fluid; 90% isobutane-10% isopentane: Final report

    SciTech Connect (OSTI)

    Gallagher, J.S.; Linsky, D.; Morrison, G.; Levelt Sengers, J.M.H.

    1987-04-01

    We present tables of thermodynamic properties, and dew and bubble properties, of a mixture of 90 mol % isobutane and 10 mol % isopentane, a working fluid in a binary geothermal power cycle. The tables are generated by a formulation of the Helmholtz free energy, in which the mixture properties are mapped onto the known properties of pure isobutane by means of the principle of generalized corresponding states. The data base for the Helmholtz free energy formulation is new. We report data obtained in three different apparatus: critical-line and isopentane vapor pressure data obtained in a visual cell; vapor-liquid equilibria data obtained in a mercury-operated variable-volume cell; and pressure-volume-temperature data for the 90 mol %-10 mol % mixture obtained in a semi-automated Burnett-isochoric apparatus. The principles of the methods, and estimates of the reliability, are discussed and all experimental data are compared with the surface. The results are tables of specific volume, enthalpy, entropy, specific heat and density and temperature derivatives of the pressure at 10 K temperature increments from 240 to 600 K along isobars from 0.01 to 20 MPa. Separate tables are prepared from the dew and bubble properties of the 90-10 mixture. Estimates of the effects of isomeric impurity of isobutane are given in graphical form.

  6. Use of Geophysical Techniques to Characterize Fluid Flow in a Geothermal Reservoir

    Broader source: Energy.gov [DOE]

    Project objectives: Joint inversion of geophysical data for ground water flow imaging; Reduced the cost in geothermal exploration and monitoring; & Combined passive and active geophysical methods.

  7. Imaging Fluid Flow in Geothermal Wells Using Distributed Thermal Perturbation Sensing

    Broader source: Energy.gov [DOE]

    Project objective: A New Geothermal Well Imaging Tool. 1.To develop a robust and easily deployable DTPS for monitoring in geothermal wells; and 2. Develop the associated analysis methodology for flow imaging; and„when possible by wellbore conditions„to determine in situthermal conductivity and basal heat flux.

  8. Stimuli-Responsive/Rheoreversible Hydraulic Fracturing Fluids as a Greener Alternative to Support Geothermal and Fossil Energy Production

    SciTech Connect (OSTI)

    Jung, Hun Bok; Carroll, KC; Kabilan, Senthil; Heldebrant, David J.; Hoyt, David W.; Zhong, Lirong; Varga, Tamas; Stephens, Sean A.; Adams, Lexor; Bonneville, Alain; Kuprat, Andrew P.; Fernandez, Carlos A.

    2015-01-01

    Cost-effective yet safe creation of high-permeability reservoirs within deep bedrock is the primary challenge for the viability of enhanced geothermal systems (EGS) and unconventional oil/gas recovery. Although fracturing fluids are commonly used for oil/gas, standard fracturing methods are not developed or proven for EGS temperatures and pressures. Furthermore, the environmental impacts of currently used fracturing methods are only recently being determined. Widespread concerns about the environmental contamination have resulted in a number of regulations for fracturing fluids advocating for greener fracturing processes. To enable EGS feasibility and lessen environmental impact of reservoir stimulation, an environmentally benign, CO2-activated, rheoreversible fracturing fluid that enhances permeability through fracturing (at significantly lower effective stress than standard fracturing fluids) due to in situ volume expansion and gel formation is investigated herein. The chemical mechanism, stability, phase-change behavior, and rheology for a novel polyallylamine (PAA)-CO2 fracturing fluid was characterized at EGS temperatures and pressures. Hydrogel is formed upon reaction with CO2 and this process is reversible (via CO2 depressurization or solubilizing with a mild acid) allowing removal from the formation and recycling, decreasing environmental impact. Rock obtained from the Coso geothermal field was fractured in laboratory experiments under various EGS temperatures and pressures with comparison to standard fracturing fluids, and the fractures were characterized with imaging, permeability measurement, and flow modeling. This novel fracturing fluid and process may vastly reduce water usage and the environmental impact of fracturing practices and effectively make EGS production and unconventional oil/gas exploitation cost-effective and cleaner.

  9. Property:ExplorationNotes | Open Energy Information

    Open Energy Info (EERE)

    the property "ExplorationNotes" Showing 1 page using this property. R RAPIDOverviewGeothermalExplorationCalifornia + The Geothermal Resources Prospecting Permit (PRC...

  10. Carbon-13 variations in fluids from the Cerro Prieto geothermal system

    SciTech Connect (OSTI)

    Janik, C.J.; Nehring, N.L.; Huebner, M.A.; Truesdell, A.H.

    1982-08-10

    The carbon isotope compositions of CO/sub 2/ in steam from Cerro Prieto production well have been measured for 1977, 1979, and 1982. Variations in the delta/sup 13/C values are caused by production-related changes in the chemical and physical parameters of the geothermal system. In 1977, most CO/sub 2/ in the reservoir was isotopically light (delta/sup 13/C = -6.4 +/- 0.4). Heavier CO/sub 2/ was produced from wells in the center of the field (M5,M26,M27) due to deposition of isotopically light calcite caused by near-well boiling. In 1979 nearly all well showed relatively heavy CO/sub 2/, probably due to expansion of aquifer boiling and calcite precipitation. In 1982, many wells in the central part of the field were shut in. The amount of drawndown decreased and as temperatures and pressures near the wells increased, the boiling zones collapsed. The CO/sub 2/ in the fluid then exchanged with the precipitated calcite and became isotopically lighter. The sensitivity of carbon isotopes to calcite precipitations caused by aquifer boiling and to reequilibration with this deposited calcite upon decrease of boiling suggests use as an indicator of these aquifer processes. Surficial CO/sub 2/ of thermal origin was collected in 1981. Generally, the carbon-13 contents were close to CO/sub 2/ from production wells except for high-temperature mud pots and fumaroles containing isotopically light CO/sub 2/ derived from near surface alteration of organic matter.

  11. Heat Transfer and Fluid Transport of Supercritical CO2 in Enhanced Geothermal System with Local Thermal Non-equilibrium Model

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Zhang, Le; Luo, Feng; Xu, Ruina; Jiang, Peixue; Liu, Huihai

    2014-12-31

    The heat transfer and fluid transport of supercritical CO2 in enhanced geothermal system (EGS) is studied numerically with local thermal non-equilibrium model, which accounts for the temperature difference between solid matrix and fluid components in porous media and uses two energy equations to describe heat transfer in the solid matrix and in the fluid, respectively. As compared with the previous results of our research group, the effect of local thermal non-equilibrium mainly depends on the volumetric heat transfer coefficient ah, which has a significant effect on the production temperature at reservoir outlet and thermal breakthrough time. The uniformity of volumetricmore » heat transfer coefficient ah has little influence on the thermal breakthrough time, but the temperature difference become more obvious with time after thermal breakthrough with this simulation model. The thermal breakthrough time reduces and the effect of local thermal non-equilibrium becomes significant with decreasing ah.« less

  12. Isotopic evidence for a magmatic contribution to fluids of the geothermal systems of Larderello, Italy, and the Geysers, California

    SciTech Connect (OSTI)

    D'Amore, F.; Bolognesi, L. . Italian National Research Council)

    1994-02-01

    The isotopic composition of steam from the Larderello, Italy, and The Geysers, California, geothermal fields is used to determine the source(s) of the fluid in these two vapor-dominated systems. Previous interpretations suggested the isotopic composition of the two systems was mainly the result of reactions at high temperature between deeply circulating meteoric water and largely sedimentary host rocks. The authors interpret the data for the Larderello and The Geysers fluids as indicating that meteoric water, exchanged with host rocks, mixes with local magnetic water. The isotopic composition of end-member magmatic water at The Geysers is typical of convergent plate boundaries ([delta][sup 18]O = +5 to +11 per mil; [delta]D = [minus]10 to [minus]35 per mil); a local isotopic composition of +11 to +15 per mil [delta][sup 18]O and [minus]15 to [minus]35 per mil [delta]D is suggested for the Larderello magmatic water. The magmatic water derived from the crystallization of underlying magma. Metamorphic waters, derived from dehydration reactions of OH-bearing minerals, may also make a minor contribution to the geothermal fluids.

  13. South Dakota geothermal handbook

    SciTech Connect (OSTI)

    Not Available

    1980-06-01

    The sources of geothermal fluids in South Dakota are described and some of the problems that exist in utilization and materials selection are described. Methods of heat extraction and the environmental concerns that accompany geothermal fluid development are briefly described. Governmental rules, regulations and legislation are explained. The time and steps necessary to bring about the development of the geothermal resource are explained in detail. Some of the federal incentives that encourage the use of geothermal energy are summarized. (MHR)

  14. Electrical Power Generation Using Geothermal Fluid Co-produced from Oil & Gas

    Broader source: Energy.gov [DOE]

    Project objectives: To validate and realize the potential for the production of low temperature resource geothermal production on oil & gas sites. Test and document the reliability of this new technology.; Gain a better understanding of operational costs associated with this equipment.

  15. Chena Hot Springs Resort - Electric Power Generation Using Geothermal...

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

    Generation Using Geothermal Fluid Coproduced from Oil andor Gas Wells Chena Hot Springs Resort - Electric Power Generation Using Geothermal Fluid Coproduced from Oil andor Gas ...

  16. A Revolutionary Hybrid Thermodynamic Cycle for Bianary Geothermal...

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

    PDF icon hybridthermcyclepeer2013.pdf More Documents & Publications Working Fluids and Their Effect on Geothermal Turbines Tailored Working Fluids for Enhanced Binary Geothermal ...

  17. Fluid Inclusion Gas Analysis

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Dilley, Lorie

    Fluid inclusion gas analysis for wells in various geothermal areas. Analyses used in developing fluid inclusion stratigraphy for wells and defining fluids across the geothermal fields. Each sample has mass spectrum counts for 180 chemical species.

  18. Fluid Inclusion Gas Analysis

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Dilley, Lorie

    2013-01-01

    Fluid inclusion gas analysis for wells in various geothermal areas. Analyses used in developing fluid inclusion stratigraphy for wells and defining fluids across the geothermal fields. Each sample has mass spectrum counts for 180 chemical species.

  19. Integrated Chemical Geothermometry System for Geothermal Exploration

    Broader source: Energy.gov [DOE]

    DOE Geothermal Peer Review 2010 - Presentation. Develop practical and reliable system to predict geothermal reservoir temperatures from integrated chemical analyses of spring and well fluids.

  20. Geothermal Energy Production from Low Temperature Resources,...

    Open Energy Info (EERE)

    Geothermal Energy Production from Low Temperature Resources, Coproduced Fluids from Oil and Gas Wells, and Geopressured Resources Jump to: navigation, search Geothermal ARRA Funded...

  1. RAPID/Geothermal/Colorado | Open Energy Information

    Open Energy Info (EERE)

    of Water Resources (CDWR) in order to appropriate groundwater in order to utilize its geothermal energy, otherwise known as an application to appropriate geothermal fluid. CRS...

  2. Property:Geothermal/Impacts | Open Energy Information

    Open Energy Info (EERE)

    fluid pathways in fracture-dominated systems. A Demonstration System for Capturing Geothermal Energy from Mine Waters beneath Butte, MT Geothermal Project + Successful...

  3. Preliminary investigation of the effects of mineralogy and fluid composition on the growth of thermophilic bacteria in geothermal hot springs on the island of Vulcano, Italy

    SciTech Connect (OSTI)

    Amend, J.P.; Helgeson, H.C. . Dept. of Geology and Geophysics); Gurrieri, S.; Valenza, M. ); Clark, D.S. . Dept. of Chemical Engineering)

    1992-01-01

    Hydrothermal experiments were carried out recently on the island of Vulcano to investigate at in situ temperatures the relation of thermophilic bacterial growth to the mineralogy and fluid chemistry of geothermal hot springs. A preheated nutrient medium was inoculated with geothermal fluid and placed in the hydrothermal reactor, together with a sample of the mineralogic matrix through which the fluid flows. The results of the experiments are somewhat equivocal owing to (1) the inability to maintain the pH of the reactor fluid at the in situ pH (2.9 at 98 C), (2) apparent phase separation of what is probably a CO[sub 2]-rich gas leading to abnormally high pressures as the reactor temperature was increased in stages to 125 C, and (3) the fact that (unexpectedly) all of the bacteria were found to occur on the surfaces of mineral grains, which could not be sequentially collected in a representative manner with the apparatus at hand. Nevertheless, it appeared qualitatively that the population of bacteria increased during the experiment. Although this observation requires future confirmation and quantification with a more sophisticated reactor, the experimental results clearly indicate that conventional microbiological growth experiments using thermophilic bacteria that have been removed from their natural nutrient, in situ pH, and mineralogic environment may have little to do with the behavior of such bacteria in geothermal systems. Understanding this behavior requires integrated studies of the organobiogeochemistry of geothermal systems.

  4. Fluid rare earth element anlayses from geothermal wells located on the Reykjanes Peninsula, Iceland and Middle Valley seafloor hydrothermal system on the Juan de Fuca Ridge.

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Andrew Fowler

    2015-05-01

    Results for fluid rare earth element analyses from four Reykjanes peninsula high-temperature geothermal fields. Data for fluids from hydrothermal vents located 2400 m below sea level from Middle Valley on the Juan de Fuca Ridge are also included. Data have been corrected for flashing. Samples preconcentrated using a chelating resin with IDA functional group (InertSep ME-1). Analyzed using an Element magnetic sector inductively coupled plasma mass spectrometry (ICP-MS).

  5. Supercritical binary geothermal cycle experiments with mixed-hydrocarbon working fluids and a vertical, in-tube, counterflow condenser

    SciTech Connect (OSTI)

    Demuth, O.J.; Bliem, C.J.; Mines, G.L.; Swank, W.D.

    1985-12-01

    The objective is improved utilization of moderate temperature geothermal resources. Current testing involves supercritical vaporization and counterflow in-tube condensing in an organic Rankine cycle. This report presents a description of the test facility and results from a part of the program in which the condenser was oriented in a vertical attitude. Results of the experiments for the supercritical heaters and the countercurrent, vertical, in-tube condenser are given for both pure and mixed-hydrocarbon working fluids. The heater and condenser behavior predicted by the Heat Transfer Research, Inc. computer codes used for correlation of the data was in excellent agreement with experimental results. A special series of tests, conducted with propane and up to approximately 40% isopentane concentration, indicated that a close approach to ''integral'' condensation was occurring in the vertically-oriented condenser.

  6. What is an Enhanced Geothermal System (EGS)? Fact Sheet

    SciTech Connect (OSTI)

    U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy

    2012-09-14

    This Geothermal Technologies Office fact sheet explains how engineered geothermal reservoirs called Enhanced Geothermal Systems are used to produce energy from geothermal resources that are otherwise not economical due to a lack of fluid and/or permeability.

  7. Baseline System Costs for 50.0 MW Enhanced Geothermal System -- A Function of: Working Fluid, Technology, and Location, Location, Location

    SciTech Connect (OSTI)

    Dunn, Paul; Selman, Nancy; Volpe, Anthony Della; Moss, Deborah; Mobley, Rick; Dickey, Halley; Unruh, Jeffery; Hitchcock, Chris; Tanguay, Jasmine; Butler, Steven; Stacey, Robert; Robertson-Tait, Ann; Pruess, Karsten; Gutoski, Greg; Fay, Jamie M.; Stitzer, John T.; Oglesby, Ken

    2012-04-30

    Substantial unexploited opportunity exists for the US, and the world, in Enhanced Geothermal Systems (EGS). As a result of US DOE investment, new drilling technology, new power generation equipment and cycles enable meaningful power production, in a compact and modular fashion; at lower and lower top side EGS working fluid temperatures and in a broader range of geologies and geographies. This cost analysis effort supports the expansion of Enhanced Geothermal Systems (EGS), furthering DOE strategic themes of energy security and sub goal of energy diversity; reducing the Nation's dependence on foreign oil while improving the environment.

  8. Low-Temperature Enhanced Geothermal System using Carbon Dioxide as the Heat-Transfer Fluid

    SciTech Connect (OSTI)

    Eastman, Alan D.

    2014-07-24

    This report describes work toward a supercritical CO2-based EGS system at the St. Johns Dome in Eastern Arizona, including a comprehensive literature search on CO2-based geothermal technologies, background seismic study, geological information, and a study of the possible use of metal oxide heat carriers to enhance the heat capacity of sCO2. It also includes cost estimates for the project, and the reasons why the project would probably not be cost effective at the proposed location.

  9. Silica extraction from geothermal water

    DOE Patents [OSTI]

    Bourcier, William L; Bruton, Carol J

    2014-09-23

    A method of producing silica from geothermal fluid containing low concentration of the silica of less than 275 ppm includes the steps of treating the geothermal fluid containing the silica by reverse osmosis treatment thereby producing a concentrated fluid containing the silica, seasoning the concentrated fluid thereby producing a slurry having precipitated colloids containing the silica, and separating the silica from the slurry.

  10. Integrated Chemical Geothermometry System for Geothermal Exploration |

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

    Department of Energy Chemical Geothermometry System for Geothermal Exploration Integrated Chemical Geothermometry System for Geothermal Exploration DOE Geothermal Peer Review 2010 - Presentation. Develop practical and reliable system to predict geothermal reservoir temperatures from integrated chemical analyses of spring and well fluids. tracers_spycher_integrated_chemical.pdf (272.32 KB) More Documents & Publications Integrated Chemical Geothermometry System for Geothermal Exploration

  11. Aerial Photography At Dixie Valley Geothermal Area (Helton, Et...

    Open Energy Info (EERE)

    analyze faults in southern Dixie Valley. The study was done for the Department of the Navy Geothermal Program Office's NAS Fallon Geothermal Exploration Project. Notes High...

  12. Compound and Elemental Analysis At International Geothermal Area...

    Open Energy Info (EERE)

    Notes Our examination of Cerro Prieto gas analyses indicates that the geothermal system structure is changing with time. Gas data routinely measured in most geothermal...

  13. Magnetotellurics At Coso Geothermal Area (2004) | Open Energy...

    Open Energy Info (EERE)

    potential of Coso Geothermal Region Notes A dense grid of magnetotelluric (MT) stations plus contiguous bipole array profiling centered over the east flank of the Coso geothermal...

  14. SMU Geothermal Conference 2011 - Geothermal Technologies Program...

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

    SMU Geothermal Conference 2011 - Geothermal Technologies Program SMU Geothermal Conference 2011 - Geothermal Technologies Program DOE Geothermal Technologies Program presentation ...

  15. GEOTHERM Data Set

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    DeAngelo, Jacob

    GEOTHERM is a comprehensive system of public databases and software used to store, locate, and evaluate information on the geology, geochemistry, and hydrology of geothermal systems. Three main databases address the general characteristics of geothermal wells and fields, and the chemical properties of geothermal fluids; the last database is currently the most active. System tasks are divided into four areas: (1) data acquisition and entry, involving data entry via word processors and magnetic tape; (2) quality assurance, including the criteria and standards handbook and front-end data-screening programs; (3) operation, involving database backups and information extraction; and (4) user assistance, preparation of such items as application programs, and a quarterly newsletter. The principal task of GEOTHERM is to provide information and research support for the conduct of national geothermal-resource assessments. The principal users of GEOTHERM are those involved with the Geothermal Research Program of the U.S. Geological Survey.

  16. GEOTHERM Data Set

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    DeAngelo, Jacob

    1983-01-01

    GEOTHERM is a comprehensive system of public databases and software used to store, locate, and evaluate information on the geology, geochemistry, and hydrology of geothermal systems. Three main databases address the general characteristics of geothermal wells and fields, and the chemical properties of geothermal fluids; the last database is currently the most active. System tasks are divided into four areas: (1) data acquisition and entry, involving data entry via word processors and magnetic tape; (2) quality assurance, including the criteria and standards handbook and front-end data-screening programs; (3) operation, involving database backups and information extraction; and (4) user assistance, preparation of such items as application programs, and a quarterly newsletter. The principal task of GEOTHERM is to provide information and research support for the conduct of national geothermal-resource assessments. The principal users of GEOTHERM are those involved with the Geothermal Research Program of the U.S. Geological Survey.

  17. Chemical relationship between discharging fluids in the Siena-Radicofani Graben and the deep fluids produced by the geothermal fields of Mt Amiata, torre Afina and Latera (Central Italy)

    SciTech Connect (OSTI)

    Duchi, V.; Paolieri, M.; Prati, F ); Minissale, A. Centro di Studio per Mineralogia e la Geochimica dei Sedimenti, Via La Pira 4, 50121 Firenze ); Valori, A )

    1992-06-01

    This paper reports that the thermal springs discharging in the Siena-Radicofani basin and the deep fluids within the geothermal systems of Piancastagnaio (Mt Amiata), Torre Alfina and Latera (Vulsini Mts) have a common origin. The chemical composition and evolution towards the low enthalpy of the springs as compared to the high enthalpy of the geothermal fluids are affected by both the structural setting of the region and the deep hydraulic conditions. Recharge of both the shallow thermal aquifer and the deep geothermal systems takes place in the outcrop areas of Mesozoic carbonate rocks, which constitute the main potential geothermal reservoir in central Italy. The waters of meteoric origin are heated at depth, as a consequence of anomalous heat flow in the region; these waters acquire a CO[sub 2]-rich rising gas phase, equilibrate with the reservoir rocks and, finally, assume their Ca--HCO[sub 3]--SO[sub 4] composition. If these waters discharge rapidly from the border fault systems of the Siena-Radicofani basin they maintain their original composition. If, instead, they emerge from the inner faults of the graben, their temperature and dissolved solids increase so that they become Na--Cl with a high content of NH[sub 4], and H[sub 3]BO[sub 3].

  18. Chena Hot Springs Resort - Electric Power Generation Using Geothermal Fluid Coproduced from Oil and/or Gas Wells

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

    Below are the project presentations and respective peer review results for Chemistry, Reservoir and Integrated Models. Development and Validation of an Advanced Stimulation Prediction Model for Enhanced Geothermal Systems (EGS), Marte Gutierrez and Masami Nakagawa, Colorado School of Mines Development of Advanced Thermal-Hydrological-Mechanical-Chemical (THMC) Modeling Capabilities for Enhanced Geothermal Systems, Yu-Shu Wu, Colorado School of Mines Enhanced Geothermal Systems (EGS) with CO2 as

  19. DOE Awards $20 Million to Develop Geothermal Power Technologies |

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

    Department of Energy Awards $20 Million to Develop Geothermal Power Technologies DOE Awards $20 Million to Develop Geothermal Power Technologies September 22, 2010 - 10:48am Addthis Power of geothermal power units. DOE announced on September 15 its selection of seven projects to research, develop, and demonstrate cutting-edge geothermal energy technologies involving low-temperature fluids, geothermal fluids recovered from oil and gas wells, and highly pressurized geothermal fluids. Today's

  20. Geothermal Power Plants — Minimizing Solid Waste and Recovering Minerals

    Broader source: Energy.gov [DOE]

    Although many geothermal power plants generate no appreciable solid waste, the unique characteristics of some geothermal fluids require special attention to handle entrained solid byproducts.

  1. The United Nations' Approach To Geothermal Resource Assessment...

    Open Energy Info (EERE)

    of United Nations' assisted geothermal projects has been on demonstrating the feasibility of producing geothermal fluids, the potential capacity of individual fields has...

  2. Electric Power Generation from Low-Temperature Geothermal Resources...

    Open Energy Info (EERE)

    1 Recovery Act: Geothermal Technologies Program Project Type Topic 2 Geothermal Energy Production from Low Temperature Resources, Coproduced Fluids from Oil and Gas Wells, and...

  3. Demonstrating the Commercial Feasibility of Geopressured-Geothermal...

    Open Energy Info (EERE)

    1 Recovery Act: Geothermal Technologies Program Project Type Topic 2 Geothermal Energy Production from Low Temperature Resources, Coproduced Fluids from Oil and Gas Wells, and...

  4. Novel Energy Conversion Equipment for Low Temperature Geothermal...

    Open Energy Info (EERE)

    1 Recovery Act: Geothermal Technologies Program Project Type Topic 2 Geothermal Energy Production from Low Temperature Resources, Coproduced Fluids from Oil and Gas Wells, and...

  5. Beowawe Bottoming Binary Project Geothermal Project | Open Energy...

    Open Energy Info (EERE)

    1 Recovery Act: Geothermal Technologies Program Project Type Topic 2 Geothermal Energy Production from Low Temperature Resources, Coproduced Fluids from Oil and Gas Wells, and...

  6. Enhanced Geothermal Systems (EGS) comparing water with CO2 as...

    Office of Scientific and Technical Information (OSTI)

    Enhanced Geothermal Systems (EGS) comparing water with CO2 as heattransmission fluids Citation Details In-Document Search Title: Enhanced Geothermal Systems (EGS) comparing water ...

  7. Development of a plan to implement enhanced geothermal system...

    Open Energy Info (EERE)

    Enhanced Geothermal Systems was proposed. This embraces the idea that the amount of permeability and fluid in geothermal resources varies across a spectrum, with HDR at one end,...

  8. Isotopic Analysis At Fenton Hill Hdr Geothermal Area (Goff, Et...

    Open Energy Info (EERE)

    Isotopic Analysis At Fenton Hill Hdr Geothermal Area (Goff, Et Al., 1981) Redirect page Jump to: navigation, search REDIRECT Isotopic Analysis- Fluid At Fenton Hill Hdr Geothermal...

  9. Unearthing Geothermal's Potential | Department of Energy

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

    Unearthing Geothermal's Potential Unearthing Geothermal's Potential September 16, 2010 - 12:33pm Addthis Niketa Kumar Niketa Kumar Public Affairs Specialist, Office of Public Affairs Our latest geothermal technologies awards are for those who think outside of the box (and below the surface). Secretary of Energy Steven Chu announced $20 million towards the research and development of non-conventional geothermal energy technologies in three areas: low temperatures fluids, geothermal fluids

  10. Enhanced Geothermal System Basics | Department of Energy

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

    Geothermal » Enhanced Geothermal System Basics Enhanced Geothermal System Basics A naturally occurring geothermal system, known as Enhanced Geothermal Systems (EGS), is another form of renewable energy. It is defined by three key elements: heat, fluid, and permeability at depth. Essentially, these are engineered reservoirs that produce energy from geothermal resources in areas that are not usually considered economically viable due to a lack of water and/or the ability of that water to pass

  11. Heat Transfer and Fluid Transport of Supercritical CO2 in Enhanced Geothermal System with Local Thermal Non-equilibrium Model

    SciTech Connect (OSTI)

    Zhang, Le; Luo, Feng; Xu, Ruina; Jiang, Peixue; Liu, Huihai

    2014-12-31

    The heat transfer and fluid transport of supercritical CO2 in enhanced geothermal system (EGS) is studied numerically with local thermal non-equilibrium model, which accounts for the temperature difference between solid matrix and fluid components in porous media and uses two energy equations to describe heat transfer in the solid matrix and in the fluid, respectively. As compared with the previous results of our research group, the effect of local thermal non-equilibrium mainly depends on the volumetric heat transfer coefficient ah, which has a significant effect on the production temperature at reservoir outlet and thermal breakthrough time. The uniformity of volumetric heat transfer coefficient ah has little influence on the thermal breakthrough time, but the temperature difference become more obvious with time after thermal breakthrough with this simulation model. The thermal breakthrough time reduces and the effect of local thermal non-equilibrium becomes significant with decreasing ah.

  12. High-potential Working Fluids for Next Generation Binary Cycle...

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

    High-potential Working Fluids for Next Generation Binary Cycle Geothermal Power Plants High-potential Working Fluids for Next Generation Binary Cycle Geothermal Power Plants DOE ...

  13. Stanford Geothermal Workshop - Geothermal Technologies Office...

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

    - Geothermal Technologies Office Stanford Geothermal Workshop - Geothermal Technologies Office Presentation by Geothermal Technologies Director Doug Hollett at the Stanford ...

  14. Technology for Increasing Geothermal Energy Productivity. Computer Models to Characterize the Chemical Interactions of Goethermal Fluids and Injectates with Reservoir Rocks, Wells, Surface Equiptment

    SciTech Connect (OSTI)

    Nancy Moller Weare

    2006-07-25

    This final report describes the results of a research program we carried out over a five-year (3/1999-9/2004) period with funding from a Department of Energy geothermal FDP grant (DE-FG07-99ID13745) and from other agencies. The goal of research projects in this program were to develop modeling technologies that can increase the understanding of geothermal reservoir chemistry and chemistry-related energy production processes. The ability of computer models to handle many chemical variables and complex interactions makes them an essential tool for building a fundamental understanding of a wide variety of complex geothermal resource and production chemistry. With careful choice of methodology and parameterization, research objectives were to show that chemical models can correctly simulate behavior for the ranges of fluid compositions, formation minerals, temperature and pressure associated with present and near future geothermal systems as well as for the very high PT chemistry of deep resources that is intractable with traditional experimental methods. Our research results successfully met these objectives. We demonstrated that advances in physical chemistry theory can be used to accurately describe the thermodynamics of solid-liquid-gas systems via their free energies for wide ranges of composition (X), temperature and pressure. Eight articles on this work were published in peer-reviewed journals and in conference proceedings. Four are in preparation. Our work has been presented at many workshops and conferences. We also considerably improved our interactive web site (geotherm.ucsd.edu), which was in preliminary form prior to the grant. This site, which includes several model codes treating different XPT conditions, is an effective means to transfer our technologies and is used by the geothermal community and other researchers worldwide. Our models have wide application to many energy related and other important problems (e.g., scaling prediction in petroleum

  15. User's guide of TOUGH2-EGS-MP: A Massively Parallel Simulator with Coupled Geomechanics for Fluid and Heat Flow in Enhanced Geothermal Systems VERSION 1.0

    SciTech Connect (OSTI)

    Xiong, Yi; Fakcharoenphol, Perapon; Wang, Shihao; Winterfeld, Philip H.; Zhang, Keni; Wu, Yu-Shu

    2013-12-01

    TOUGH2-EGS-MP is a parallel numerical simulation program coupling geomechanics with fluid and heat flow in fractured and porous media, and is applicable for simulation of enhanced geothermal systems (EGS). TOUGH2-EGS-MP is based on the TOUGH2-MP code, the massively parallel version of TOUGH2. In TOUGH2-EGS-MP, the fully-coupled flow-geomechanics model is developed from linear elastic theory for thermo-poro-elastic systems and is formulated in terms of mean normal stress as well as pore pressure and temperature. Reservoir rock properties such as porosity and permeability depend on rock deformation, and the relationships between these two, obtained from poro-elasticity theories and empirical correlations, are incorporated into the simulation. This report provides the user with detailed information on the TOUGH2-EGS-MP mathematical model and instructions for using it for Thermal-Hydrological-Mechanical (THM) simulations. The mathematical model includes the fluid and heat flow equations, geomechanical equation, and discretization of those equations. In addition, the parallel aspects of the code, such as domain partitioning and communication between processors, are also included. Although TOUGH2-EGS-MP has the capability for simulating fluid and heat flows coupled with geomechanical effects, it is up to the user to select the specific coupling process, such as THM or only TH, in a simulation. There are several example problems illustrating applications of this program. These example problems are described in detail and their input data are presented. Their results demonstrate that this program can be used for field-scale geothermal reservoir simulation in porous and fractured media with fluid and heat flow coupled with geomechanical effects.

  16. User's Guide of TOUGH2-EGS. A Coupled Geomechanical and Reactive Geochemical Simulator for Fluid and Heat Flow in Enhanced Geothermal Systems Version 1.0

    SciTech Connect (OSTI)

    Fakcharoenphol, Perapon; Xiong, Yi; Hu, Litang; Winterfeld, Philip H.; Xu, Tianfu; Wu, Yu-Shu

    2013-05-01

    TOUGH2-EGS is a numerical simulation program coupling geomechanics and chemical reactions for fluid and heat flows in porous media and fractured reservoirs of enhanced geothermal systems. The simulator includes the fully-coupled geomechanical (THM) module, the fully-coupled geochemical (THC) module, and the sequentially coupled reactive geochemistry (THMC) module. The fully-coupled flow-geomechanics model is developed from the linear elastic theory for the thermo-poro-elastic system and is formulated with the mean normal stress as well as pore pressure and temperature. The chemical reaction is sequentially coupled after solution of flow equations, which provides the flow velocity and phase saturation for the solute transport calculation at each time step. In addition, reservoir rock properties, such as porosity and permeability, are subjected to change due to rock deformation and chemical reactions. The relationships between rock properties and geomechanical and chemical effects from poro-elasticity theories and empirical correlations are incorporated into the simulator. This report provides the user with detailed information on both mathematical models and instructions for using TOUGH2-EGS for THM, THC or THMC simulations. The mathematical models include the fluid and heat flow equations, geomechanical equation, reactive geochemistry equations, and discretization methods. Although TOUGH2-EGS has the capability for simulating fluid and heat flows coupled with both geomechanical and chemical effects, it is up to the users to select the specific coupling process, such as THM, THC, or THMC in a simulation. There are several example problems illustrating the applications of this program. These example problems are described in details and their input data are presented. The results demonstrate that this program can be used for field-scale geothermal reservoir simulation with fluid and heat flow, geomechanical effect, and chemical reaction in porous and fractured media.

  17. LiDAR At Dixie Valley Geothermal Area (Helton, Et Al., 2011)...

    Open Energy Info (EERE)

    analyze faults in southern Dixie Valley. The study was done for the Department of the Navy Geothermal Program Office's NAS Fallon Geothermal Exploration Project. Notes High...

  18. Iceland Geothermal Conference 2013 - Geothermal Policies and...

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

    Iceland Geothermal Conference 2013 - Geothermal Policies and Impacts in the U.S. Iceland Geothermal Conference 2013 - Geothermal Policies and Impacts in the U.S. Iceland Geothermal ...

  19. Paleomagnetic Measurements At Roosevelt Hot Springs Geothermal...

    Open Energy Info (EERE)

    of the Roosevelt Hot Springs Geothermal Area. Notes Paleomagnetic dating performed by Brown (1977) on opal samples in order to date the age of the hydrothermal system. The...

  20. Enhanced Geothermal Systems Technologies

    Broader source: Energy.gov [DOE]

    Geothermal Energy an​d the Enhanced Geothermal Systems Concept The Navy 1 geothermal power plant near Coso Hot Springs, California, is applying EGS technology. Heat is naturally present everywhere in the earth. For all intents and purposes, heat from the earth is inexhaustible. Water is not nearly as ubiquitous in the earth as heat. Most aqueous fluids are derived from surface waters that have percolated into the earth along permeable pathways such as faults. Permeability is a measure of the ease of fluid flow through rock. The permeability of rock results from pores, fractures, joints, faults, and other openings which allow fluids to move. High permeability implies that fluids can flow rapidly through the rock. Permeability and, subsequently, the amount of fluids tend to decrease with depth as openings in the rocks compress from the weight of the overburden.

  1. GETEM Manuals and Revision Notes

    Broader source: Energy.gov [DOE]

    Please refer to these manuals and revision notes prior to downloading and running the Geothermal Electricity Technology Evaluation Model (GETEM). Because this is a beta version, you are urged to...

  2. Geology, hydrothermal petrology, stable isotope geochemistry, and fluid inclusion geothermometry of LASL geothermal test well C/T-1 (Mesa 31-1), East Mesa, Imperial Valley, California, USA

    SciTech Connect (OSTI)

    Miller, K.R.; Elders, W.A.

    1980-08-01

    Borehole Mesa 31-1 (LASL C/T-1) is an 1899-m (6231-ft) deep well located in the northwestern part of the East Mesa Geothermal Field. Mesa 31-1 is the first Calibration/Test Well (C/T-1) in the Los Alamos Scientific Laboratory (LASL), Geothermal Log Interpretation Program. The purpose of this study is to provide a compilation of drillhole data, drill cuttings, well lithology, and formation petrology that will serve to support the use of well LASL C/T-1 as a calibration/test well for geothermal logging. In addition, reviews of fluid chemistry, stable isotope studies, isotopic and fluid inclusion geothermometry, and the temperature log data are presented. This study provides the basic data on the geology and hydrothermal alteration of the rocks in LASL C/T-1 as background for the interpretation of wireline logs.

  3. Geothermal Energy Projects | Department of Energy

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

    Geothermal Energy Projects Geothermal Energy Projects Geothermal Energy Projects Geothermal Energy Projects Geothermal Energy Projects Geothermal Energy Projects Geothermal Energy ...

  4. Mise-A-La-Masse Mapping of the HGP-A Geothermal Reservoir, Hawaii...

    Open Energy Info (EERE)

    confine geothermal fluids at depth. Authors James Kauahikaua, Mark Mattice and Dallas Jackson Conference GRC Annual Meeting; unknown; 19800901 Published Geothermal Resources...

  5. Property:Geothermal/ProjectTypeTopic2Count | Open Energy Information

    Open Energy Info (EERE)

    + 0 + Geothermal Data Development, Collection, and Maintenance + 0 + Geothermal Energy Production from Low Temperature Resources, Coproduced Fluids from Oil and Gas Wells, and...

  6. Property:Geothermal/NumberOfArraProjectTypeTopic2 | Open Energy...

    Open Energy Info (EERE)

    + 7 + Geothermal Data Development, Collection, and Maintenance + 3 + Geothermal Energy Production from Low Temperature Resources, Coproduced Fluids from Oil and Gas Wells, and...

  7. Geothermal Energy Retrofit

    SciTech Connect (OSTI)

    Bachman, Gary

    2015-07-28

    The Cleary University Geothermal Energy Retrofit project involved: 1. A thermal conductivity test; 2. Assessment of alternative horizontal and vertical ground heat exchanger options; 3. System design; 4. Asphalt was stripped from adjacent parking areas and a vertical geothermal ground heat exchanger system installed; 5. the ground heat exchanger was connected to building; 6. a system including 18 heat pumps, control systems, a manifold and pumps, piping for fluid transfer and ductwork for conditioned air were installed throughout the building.

  8. Geothermal Energy News | Department of Energy

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

    University under the direction of Dr. Roland Horne is advancing the application of nanotechnology in determining fluid flow through enhanced geothermal system reservoirs at depth....

  9. Geothermal Technologies Office 2015 Peer Review

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

    address by this project: * Quantify the Rare Earth Element (REE) content in hydrothermal ... high concentrations of interfering elements typical of geothermal fluids. * We have ...

  10. GEOSCIENCES; 15 GEOTHERMAL ENERGY; QUARTZ; DISSOLUTION; QUARTZITES...

    Office of Scientific and Technical Information (OSTI)

    fracture surfaces by dissolution. Part II Johnson, B. 58 GEOSCIENCES; 15 GEOTHERMAL ENERGY; QUARTZ; DISSOLUTION; QUARTZITES; ROCK-FLUID INTERACTIONS; AQUEOUS SOLUTIONS;...

  11. New Geothermal Exploration and Management Tools | Department...

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

    The university developed a method to comprehensively target geothermal drilling by combining geophysical data sets to generate more complete images of the subsurface and fluid flow ...

  12. Chemical logging of geothermal wells

    DOE Patents [OSTI]

    Allen, Charles A.; McAtee, Richard E.

    1981-01-01

    The presence of geothermal aquifers can be detected while drilling in geothermal formations by maintaining a chemical log of the ratio of the concentrations of calcium to carbonate and bicarbonate ions in the return drilling fluid. A continuous increase in the ratio of the concentrations of calcium to carbonate and bicarbonate ions is indicative of the existence of a warm or hot geothermal aquifer at some increased depth.

  13. Chemical logging of geothermal wells

    DOE Patents [OSTI]

    Allen, C.A.; McAtee, R.E.

    The presence of geothermal aquifers can be detected while drilling in geothermal formations by maintaining a chemical log of the ratio of the concentrations of calcium to carbonate and bicarbonate ions in the return drilling fluid. A continuous increase in the ratio of the concentrations of calcium to carbonate and bicarbonate ions is indicative of the existence of a warm or hot geothermal aquifer at some increased depth.

  14. Geothermal Literature Review At International Geothermal Area...

    Open Energy Info (EERE)

    navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Geothermal Literature Review At International Geothermal Area, Iceland (Ranalli & Rybach, 2005)...

  15. Geothermal Literature Review At International Geothermal Area...

    Open Energy Info (EERE)

    navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Geothermal Literature Review At International Geothermal Area, New Zealand (Ranalli & Rybach, 2005)...

  16. Geothermal Literature Review At International Geothermal Area...

    Open Energy Info (EERE)

    navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Geothermal Literature Review At International Geothermal Area, Italy (Ranalli & Rybach, 2005) Exploration...

  17. Geothermal Energy Association Recognizes the National Geothermal...

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

    Geothermal Energy Association Recognizes the National Geothermal Data System Geothermal Energy Association Recognizes the National Geothermal Data System July 29, 2014 - 8:20am...

  18. Technologies for Extracting Valuable Metals and Compounds from Geothermal

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

    Fluids | Department of Energy Technologies for Extracting Valuable Metals and Compounds from Geothermal Fluids Technologies for Extracting Valuable Metals and Compounds from Geothermal Fluids DOE Geothermal Peer Review 2010 - Presentation. Project objectives: Demonstrate geothermal mineral extraction; Demonstrate technical and economic feasibility; Produce products for market development; Generate operational data and scale up data so a commercial scale plant can be designed and built.

  19. Novel Tube-in-Tube System Simplifies Subsurface Fluid Sampling...

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

    Industrial Technologies Geothermal Geothermal Find More Like This Return to Search Novel Tube-in-Tube System Simplifies Subsurface Fluid Sampling Lawrence Berkeley National...

  20. Fluid Inclusion Analysis At Valles Caldera - Sulphur Springs...

    Open Energy Info (EERE)

    Sulphur Springs Geothermal Area (Sasada & Goff, 1995) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Fluid Inclusion Analysis At Valles Caldera...

  1. Image Logs At Coso Geothermal Area (2004) | Open Energy Information

    Open Energy Info (EERE)

    Coso Geothermal Region Notes During the second year of this project, wellbore logs and stress data were acquired in a new production well drilled in the Coso Geothermal Field,...

  2. Imperial County geothermal development annual meeting: summary

    SciTech Connect (OSTI)

    Not Available

    1983-01-01

    All phases of current geothermal development in Imperial County are discussed and future plans for development are reviewed. Topics covered include: Heber status update, Heber binary project, direct geothermal use for high-fructose corn sweetener production, update on county planning activities, Brawley and Salton Sea facility status, status of Imperial County projects, status of South Brawley Prospect 1983, Niland geothermal energy program, recent and pending changes in federal procedures/organizations, plant indicators of geothermal fluid on East Mesa, state lands activities in Imperial County, environmental interests in Imperial County, offshore exploration, strategic metals in geothermal fluids rebuilding of East Mesa Power Plant, direct use geothermal potential for Calipatria industrial Park, the Audubon Society case, status report of the Cerro Prieto geothermal field, East Brawley Prospect, and precision gravity survey at Heber and Cerro Prieto geothermal fields. (MHR)

  3. Hawaii Geothermal Area | Department of Energy

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

    Hawaii Geothermal Area Hawaii Geothermal Area The Hawaii geothermal area includes the Puna Geothermal Venture, which is located about 21 miles south of Hilo on the Big Island of Hawaii. The facility is situated along the Lower East Rift Zone of the Kilauea Volcano. At the Puna Geothermal Venture, geothermal fluid is brought to the surface through production wells, which tap into the resource at a depth of almost a mile. The steam, along with its non-condensable gases, is routed to the power

  4. Energy 101: Geothermal Energy | Department of Energy

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

    Geothermal Energy Energy 101: Geothermal Energy

  5. Materials selection guidelines for geothermal energy utilization systems

    SciTech Connect (OSTI)

    Ellis, P.F. II; Conover, M.F.

    1981-01-01

    This manual includes geothermal fluid chemistry, corrosion test data, and materials operating experience. Systems using geothermal energy in El Salvador, Iceland, Italy, Japan, Mexico, New Zealand, and the United States are described. The manual provides materials selection guidelines for surface equipment of future geothermal energy systems. The key chemical species that are significant in determining corrosiveness of geothermal fluids are identified. The utilization modes of geothermal energy are defined as well as the various physical fluid parameters that affect corrosiveness. Both detailed and summarized results of materials performance tests and applicable operating experiences from forty sites throughout the world are presented. The application of various non-metal materials in geothermal environments are discussed. Included in appendices are: corrosion behavior of specific alloy classes in geothermal fluids, corrosion in seawater desalination plants, worldwide geothermal power production, DOE-sponsored utilization projects, plant availability, relative costs of alloys, and composition of alloys. (MHR)

  6. Surface Indicators of Geothermal Activity at Salt Wells, Nevada...

    Open Energy Info (EERE)

    of geothermal fluids. An example is provided by the Salt Wells geothermal system in Churchill County, Nevada, USA, where surface features define a 9-km-long area that matches the...

  7. Teleseismic-Seismic Monitoring At Coso Geothermal Area (2005...

    Open Energy Info (EERE)

    over a longer period of time Notes The permanent 18-station network of three-component digital seismometers at the seismically active Coso geothermal area, California, provides...

  8. Compound and Elemental Analysis At International Geothermal Area...

    Open Energy Info (EERE)

    Geothermal Area Indonesia Exploration Technique Compound and Elemental Analysis Activity Date Usefulness not indicated DOE-funding Unknown Notes Improving Exploration Models of...

  9. SWIR at Steamboat Springs Geothermal Area (Kruse 2012) | Open...

    Open Energy Info (EERE)

    Springs Geothermal Area Exploration Technique SWIR Activity Date Spectral Imaging Sensor MASTER, ASTER, AVIRIS Usefulness useful DOE-funding none Notes Analysis of the SWIR...

  10. Thermal Gradient Holes At Blue Mountain Geothermal Area (Fairbank...

    Open Energy Info (EERE)

    Exploration Basis Thermal gradient holes were drilled in an effort to determine the feasibility of commercial geothermal energy generation at Blue Mountain Notes Ten temperature...

  11. Radar At Dixie Valley Geothermal Area (Foxall & Vasco, 2008)...

    Open Energy Info (EERE)

    DOE-funding Unknown Exploration Basis This study was conducted to image ground subsidence over the Dixie Valley Geothermal Field Notes An interferometric synthetic aperture...

  12. Thermal Gradient Holes At North Brawley Geothermal Area (Matlick...

    Open Energy Info (EERE)

    DOE-funding Unknown Exploration Basis Thermal gradient wells were drilled for initial exploration and assessment of the North Brawley Geothermal Area. Notes Union Oil Company...

  13. Exploratory Well At Roosevelt Hot Springs Geothermal Area (Faulder...

    Open Energy Info (EERE)

    Unknown Exploration Basis Faulder 1991 Conceptual Geological Model compilation and literature review of the Roosevelt Hot Springs Geothermal Area. Notes Exploratory drilling in...

  14. Aeromagnetic Survey At Roosevelt Hot Springs Geothermal Area...

    Open Energy Info (EERE)

    Unknown Exploration Basis Faulder 1991 Conceptual Geological Model compilation and literature review of the Roosevelt Hot Springs Geothermal Area. Notes Aeromagnetic intensity...

  15. Ground Gravity Survey At Roosevelt Hot Springs Geothermal Area...

    Open Energy Info (EERE)

    Unknown Exploration Basis Faulder 1991 Conceptual Geological Model compilation and literature review of the Roosevelt Hot Springs Geothermal Area. Notes Gravity modeling and...

  16. Micro-Earthquake At Roosevelt Hot Springs Geothermal Area (Faulder...

    Open Energy Info (EERE)

    Unknown Exploration Basis Faulder 1991 Conceptual Geological Model compilation and literature review of the Roosevelt Hot Springs Geothermal Area. Notes P-wave passive seismic...

  17. Pressure Temperature Log At Roosevelt Hot Springs Geothermal...

    Open Energy Info (EERE)

    Unknown Exploration Basis Faulder 1991 Conceptual Geological Model compilation and literature review of the Roosevelt Hot Springs Geothermal Area. Notes Pre-exploitation...

  18. Exploratory Boreholes At Chena Geothermal Area (Kolker, Et Al...

    Open Energy Info (EERE)

    Exploration Basis Exploration program undertaken by the DOE-funded Geothermal Resource Evaluation and Definitions Program Phase I (GRED III Phase I) Notes As of 2006, 10...

  19. Cuttings Analysis At Coso Geothermal Area (1985-1987) | Open...

    Open Energy Info (EERE)

    useful DOE-funding Unknown Exploration Basis Analyze an indicator of high permeability zones within a geothermal field Notes Petrographic and geochemical analyses of...

  20. Field Mapping At Coso Geothermal Area (2006) | Open Energy Information

    Open Energy Info (EERE)

    Basis Determine impact of brittle faulting and seismogenic deformation on permeability in geothermal reservoir Notes New mapping documents a series of late Quaternary...

  1. Core Analysis At Coso Geothermal Area (1979) | Open Energy Information

    Open Energy Info (EERE)

    useful DOE-funding Unknown Exploration Basis Compare microcracks between Coso and Raft River geothermal areas Notes Microcracks were observed in core samples from Coso. Both...

  2. Geothermal Energy Resources of Northwest New Mexico | Open Energy...

    Open Energy Info (EERE)

    Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal Article: Geothermal Energy Resources of Northwest New Mexico Abstract EDITORS NOTE: The material in...

  3. Electromagnetic Soundings At Dixie Valley Geothermal Area (Mallan...

    Open Energy Info (EERE)

    The overall goal of this effort was to provide experience and insight toward future geothermal development and geophysical borehole technologies. Notes Borehole logging and...

  4. Ground Gravity Survey At Lightning Dock Geothermal Area (Swanberg...

    Open Energy Info (EERE)

    Basis Examination of geothermal resources of New Mexico Notes detailed gravity and magnetics survey of Lightning Dock to identify burried structures as a source of the thermal...

  5. Proceedings of a Topical Meeting On Small Scale Geothermal Power Plants and Geothermal Power Plant Projects

    SciTech Connect (OSTI)

    1986-02-12

    These proceedings describe the workshop of the Topical Meeting on Small Scale Geothermal Power Plants and Geothermal Power Plant Projects. The projects covered include binary power plants, rotary separator, screw expander power plants, modular wellhead power plants, inflow turbines, and the EPRI hybrid power system. Active projects versus geothermal power projects were described. In addition, a simple approach to estimating effects of fluid deliverability on geothermal power cost is described starting on page 119. (DJE-2005)

  6. Geothermal Heat Pumps - Cooling Mode | Department of Energy

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

    Cooling Mode Geothermal Heat Pumps - Cooling Mode In summer, the fluid removes heat from the building and transfers it to the relatively cooler ground in order to cool the building. Cooling Mode Animated Slide (PowerPoint 493 KB) Note: To view this animation in PowerPoint use 'Slide Show' mode. Simple illustration showing the removal of heat from a building space and transfer to the ground to provide space cooling. Simple illustration showing the removal of heat from a building space and

  7. Geothermal Heat Pumps - Heating Mode | Department of Energy

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

    Heating Mode Geothermal Heat Pumps - Heating Mode In winter, fluid passing through this vertical, closed loop system is warmed by the heat of the earth; this heat is then transferred to the building. Heating Mode Animated Slide (PowerPoint 493 KB) Note: To view this animation in PowerPoint use 'Slide Show' mode. Simple illustration showing the transfer of heat from the ground to a building space to provide space heating. Simple illustration showing the transfer of heat from the ground to a

  8. A Revolutionary Hybrid Thermodynamic Cycle for Bianary Geothermal Power |

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

    Department of Energy A Revolutionary Hybrid Thermodynamic Cycle for Bianary Geothermal Power A Revolutionary Hybrid Thermodynamic Cycle for Bianary Geothermal Power A Revolutionary Hybrid Thermodynamic Cycle for Bianary Geothermal Power presentation at the April 2013 peer review meeting held in Denver, Colorado. hybrid_therm_cycle_peer2013.pdf (571.03 KB) More Documents & Publications Working Fluids and Their Effect on Geothermal Turbines Tailored Working Fluids for Enhanced Binary

  9. Geothermal Tomorrow

    Office of Energy Efficiency and Renewable Energy (EERE)

    This magazine-format report discusses recent strategies and activities of the DOE Geothermal Technologies Program, as well as an update of technologies and economics of the U.S. geothermal industry.

  10. Geothermal well log interpretation state of the art. Final report

    SciTech Connect (OSTI)

    Sanyal, S.K.; Wells, L.E.; Bickham, R.E.

    1980-01-01

    An in-depth study of the state of the art in Geothermal Well Log Interpretation has been made encompassing case histories, technical papers, computerized literature searches, and actual processing of geothermal wells from New Mexico, Idaho, and California. A classification scheme of geothermal reservoir types was defined which distinguishes fluid phase and temperature, lithology, geologic province, pore geometry, salinity, and fluid chemistry. Major deficiencies of Geothermal Well Log Interpretation are defined and discussed with recommendations of possible solutions or research for solutions. The Geothermal Well Log Interpretation study and report has concentrated primarily on Western US reservoirs. Geopressured geothermal reservoirs are not considered.

  11. Geothermal guidebook

    SciTech Connect (OSTI)

    Not Available

    1981-06-01

    The guidebook contains an overview, a description of the geothermal resource, statutes and regulations, and legislative policy concerns. (MHR)

  12. development Not Available 15 GEOTHERMAL ENERGY; TONGONAN GEOTHERMAL...

    Office of Scientific and Technical Information (OSTI)

    field Leyte, Philippines. Report on exploration and development Not Available 15 GEOTHERMAL ENERGY; TONGONAN GEOTHERMAL FIELD; GEOTHERMAL EXPLORATION; GEOTHERMAL POWER...

  13. Idaho Geothermal Commercialization Program. Idaho geothermal handbook

    SciTech Connect (OSTI)

    Hammer, G.D.; Esposito, L.; Montgomery, M.

    1980-03-01

    The following topics are covered: geothermal resources in Idaho, market assessment, community needs assessment, geothermal leasing procedures for private lands, Idaho state geothermal leasing procedures - state lands, federal geothermal leasing procedures - federal lands, environmental and regulatory processes, local government regulations, geothermal exploration, geothermal drilling, government funding, private funding, state and federal government assistance programs, and geothermal legislation. (MHR)

  14. Recovery Act: Geothermal Data Aggregation: Submission of Information into the National Geothermal Data System, Final Report DOE Project DE-EE0002852 June 24, 2014

    SciTech Connect (OSTI)

    Blackwell, David D.; Chickering Pace, Cathy; Richards, Maria C.

    2014-06-24

    The National Geothermal Data System (NGDS) is a Department of Energy funded effort to create a single cataloged source for a variety of geothermal information through a distributed network of databases made available via web services. The NGDS will help identify regions suitable for potential development and further scientific data collection and analysis of geothermal resources as a source for clean, renewable energy. A key NGDS repository or ‘node’ is located at Southern Methodist University developed by a consortium made up of: • SMU Geothermal Laboratory • Siemens Corporate Technology, a division of Siemens Corporation • Bureau of Economic Geology at the University of Texas at Austin • Cornell Energy Institute, Cornell University • Geothermal Resources Council • MLKay Technologies • Texas Tech University • University of North Dakota. The focus of resources and research encompass the United States with particular emphasis on the Gulf Coast (on and off shore), the Great Plains, and the Eastern U.S. The data collection includes the thermal, geological and geophysical characteristics of these area resources. Types of data include, but are not limited to, temperature, heat flow, thermal conductivity, radiogenic heat production, porosity, permeability, geological structure, core geophysical logs, well tests, estimated reservoir volume, in situ stress, oil and gas well fluid chemistry, oil and gas well information, and conventional and enhanced geothermal system related resources. Libraries of publications and reports are combined into a unified, accessible, catalog with links for downloading non-copyrighted items. Field notes, individual temperature logs, site maps and related resources are included to increase data collection knowledge. Additional research based on legacy data to improve quality increases our understanding of the local and regional geology and geothermal characteristics. The software to enable the integration, analysis, and

  15. Geothermal Energy Summary

    SciTech Connect (OSTI)

    J. L. Renner

    2007-08-01

    Following is complete draft.Geothermal Summary for AAPG Explorer J. L. Renner, Idaho National Laboratory Geothermal energy is used to produce electricity in 24 countries. The United States has the largest capacity (2,544 MWe) followed by Philippines (1,931 MWe), Mexico (953 MWe), Indonesia (797 MWe), and Italy (791 MWe) (Bertani, 2005). When Chevron Corporation purchased Unocal Corporation they became the leading producer of geothermal energy worldwide with projects in Indonesia and the Philippines. The U. S. geothermal industry is booming thanks to increasing energy prices, renewable portfolio standards, and a production tax credit. California (2,244 MWe) is the leading producer, followed by Nevada (243 MWe), Utah (26 MWe) and Hawaii (30 MWe) and Alaska (0.4 MWe) (Bertani, 2005). Alaska joined the producing states with two 0.4 KWe power plants placed on line at Chena Hot Springs during 2006. The plant uses 30 liters per second of 75C water from shallow wells. Power production is assisted by the availability of gravity fed, 7C cooling water (http://www.yourownpower.com/) A 13 MWe binary power plant is expected to begin production in the fall of 2007 at Raft River in southeastern Idaho. Idaho also is a leader in direct use of geothermal energy with the state capital building and several other state and Boise City buildings as well as commercial and residential space heated using fluids from several, interconnected geothermal systems. The Energy Policy Act of 2005 modified leasing provisions and royalty rates for both geothermal electrical production and direct use. Pursuant to the legislation the Bureau of Land management and Minerals Management Service published final regulations for continued geothermal leasing, operations and royalty collection in the Federal Register (Vol. 72, No. 84 Wednesday May 2, 2007, BLM p. 24358-24446, MMS p. 24448-24469). Existing U. S. plants focus on high-grade geothermal systems located in the west. However, interest in non

  16. Geothermal Energy | Open Energy Information

    Open Energy Info (EERE)

    Geothermal Energy (Redirected from Geothermal) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Overview Technologies Resources Market Data Geothermal Topics Data...

  17. Environmental Assessment Lakeview Geothermal Project

    SciTech Connect (OSTI)

    Treis, Tania

    2012-04-30

    The Town of Lakeview is proposing to construct and operate a geothermal direct use district heating system in Lakeview, Oregon. The proposed project would be in Lake County, Oregon, within the Lakeview Known Geothermal Resources Area (KGRA). The proposed project includes the following elements: Drilling, testing, and completion of a new production well and geothermal water injection well; construction and operation of a geothermal production fluid pipeline from the well pad to various Town buildings (i.e., local schools, hospital, and Lake County Industrial Park) and back to a geothermal water injection well. This EA describes the proposed project, the alternatives considered, and presents the environmental analysis pursuant to the National Environmental Policy Act. The project would not result in adverse effects to the environment with the implementation of environmental protection measures.

  18. Electric Power Generation from Co-Produced Fluids from Oil and...

    Open Energy Info (EERE)

    1 Recovery Act: Geothermal Technologies Program Project Type Topic 2 Geothermal Energy Production from Low Temperature Resources, Coproduced Fluids from Oil and Gas Wells, and...

  19. Research Initiative Will Demonstrate Low Temperature Geothermal Electrical

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

    Power Generation Systems Using Oilfield Fluids | Department of Energy Research Initiative Will Demonstrate Low Temperature Geothermal Electrical Power Generation Systems Using Oilfield Fluids Research Initiative Will Demonstrate Low Temperature Geothermal Electrical Power Generation Systems Using Oilfield Fluids October 6, 2009 - 1:51pm Addthis The U.S. Department of Energy's (DOE) Geothermal Technologies Office (GTO) is announcing a new collaboration with the Office of Fossil Energy (FE) to

  20. Stanford Geothermal Workshop- Geothermal Technologies Office

    Broader source: Energy.gov [DOE]

    Presentation by Geothermal Technologies Director Doug Hollett at the Stanford Geothermal Workshop on February 11-13, 2013.

  1. Geothermal Reservoir Dynamics - TOUGHREACT

    SciTech Connect (OSTI)

    Pruess, Karsten; Xu, Tianfu; Shan, Chao; Zhang, Yingqi; Wu,Yu-Shu; Sonnenthal, Eric; Spycher, Nicolas; Rutqvist, Jonny; Zhang,Guoxiang; Kennedy, Mack

    2005-03-15

    This project has been active for several years and has focused on developing, enhancing and applying mathematical modeling capabilities for fractured geothermal systems. The emphasis of our work has recently shifted towards enhanced geothermal systems (EGS) and hot dry rock (HDR), and FY05 is the first year that the DOE-AOP actually lists this project under Enhanced Geothermal Systems. Our overall purpose is to develop new engineering tools and a better understanding of the coupling between fluid flow, heat transfer, chemical reactions, and rock-mechanical deformation, to demonstrate new EGS technology through field applications, and to make technical information and computer programs available for field applications. The objectives of this project are to: (1) Improve fundamental understanding and engineering methods for geothermal systems, primarily focusing on EGS and HDR systems and on critical issues in geothermal systems that are difficult to produce. (2) Improve techniques for characterizing reservoir conditions and processes through new modeling and monitoring techniques based on ''active'' tracers and coupled processes. (3) Improve techniques for targeting injection towards specific engineering objectives, including maintaining and controlling injectivity, controlling non-condensable and corrosive gases, avoiding scale formation, and optimizing energy recovery. Seek opportunities for field testing and applying new technologies, and work with industrial partners and other research organizations.

  2. EERE Success Story-New Geothermal Exploration and Management...

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

    The university developed a method to comprehensively target geothermal drilling by combining geophysical data sets to generate more complete images of the subsurface and fluid flow ...

  3. Recovery Act: Geothermal Data Aggregation: Submission of Information...

    Office of Scientific and Technical Information (OSTI)

    reservoir volume,more in situ stress, oil and gas well fluid chemistry, oil and gas well information, and conventional and enhanced geothermal system related resources. ...

  4. Isotopic Analysis- Gas At Long Valley Caldera Geothermal Area...

    Open Energy Info (EERE)

    Through 30 September Activity T. Winnett, Cathy J. Janik (1986) Isotopic Composition of Carbon in Fluids from the Long Valley Geothermal System, California, In- Proceedings of...

  5. Compound and Elemental Analysis At Fenton Hill HDR Geothermal...

    Open Energy Info (EERE)

    Interactions in the Fenton Hill, New Mexico, Hot Dry Rock Geothermal Systems I. Fluid Mixing and Chemical Geothermometry Additional References Retrieved from "http:...

  6. Isotopic Analysis- Gas At Dixie Valley Geothermal Area (Kennedy...

    Open Energy Info (EERE)

    purpose of this research activity was to determine the fluid and heat source, Identify flow paths, and evaluate the possibility of a more extensive deep geothermal reservoir...

  7. Indian Valley Hot Springs Geothermal Area | Open Energy Information

    Open Energy Info (EERE)

    Exploration Activity Page Technique Activity Start Date Activity End Date Reference Material Isotopic Analysis- Fluid At Indian Valley Hot Springs Geothermal Area (1990) Isotopic...

  8. Advanced 3D Geophysical Imaging Technologies for Geothermal Resource Characterization

    Broader source: Energy.gov [DOE]

    DOE Geothermal Peer Review 2010 - Presentation. This project aims to develop improved geophysical imaging method for characterizing subsurface structure, identify fluid locations, and characterize fractures.

  9. Kelkar, S. 15 GEOTHERMAL ENERGY; 99 GENERAL AND MISCELLANEOUS...

    Office of Scientific and Technical Information (OSTI)

    SYSTEMS; FINITE ELEMENT METHOD; HEAT TRANSFER; MASS TRANSFER; MULTIPHASE FLOW; POROUS MATERIALS; COMPUTER CODES; ENERGY SYSTEMS; ENERGY TRANSFER; FLUID FLOW; GEOTHERMAL...

  10. Exploration Guides For Active High-Temperature Geothermal Systems...

    Open Energy Info (EERE)

    field (or ore deposit), iv) hydrothermal fluids and their surface expression, and v) geothermal reservoirs as against epithermal orebodies, have enabled us to formulate...

  11. Enhanced Geothermal Systems (EGS) with CO2 as Heat Transmission...

    Open Energy Info (EERE)

    Fluid Project Type Topic 1 Laboratory Call for Submission of Applications for Research, Development and Analysis of Geothermal Technologies Project Type Topic 2 Supercritical...

  12. A Structural Model Guide For Geothermal Exploration In Ancestral...

    Open Energy Info (EERE)

    traverse the base of the AMB volcano. This master fault induced fracture-controlled permeability where fluids in the Tongonan Geothermal Field circulate. The structural model...

  13. Application of thermal depletion model to geothermal reservoirs...

    Open Energy Info (EERE)

    method are presented, and possible application to the Salton Sea Geothermal Field, the Raft River System, and to reinjection of supersaturated fluids is discussed. Authors...

  14. High-Temperature-High-Volume Lifting for Enhanced Geothermal Systems

    Broader source: Energy.gov [DOE]

    Project objective: Advance the technology for well fluids lifting systems to meet the foreseeable pressure; temperature; and longevity needs of the Enhanced Geothermal Systems (EGS) industry.

  15. A Geothermal District-Heating System and Alternative Energy Research...

    Open Energy Info (EERE)

    2 Geothermal Energy Production from Low Temperature Resources, Coproduced Fluids from Oil and Gas Wells, and Geopressured Resources Project Type Topic 3 Low Temperature...

  16. Geothermal Energy | Open Energy Information

    Open Energy Info (EERE)

    Energy (Redirected from Geothermal Power) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Print PDF Geothermal Energy RSF GeothermalPowerStation.jpg Geothermal energy...

  17. OIT geothermal system improvements

    SciTech Connect (OSTI)

    Lienau, P.J.

    1996-08-01

    Three geothermal wells drilled during the original campus construction vary from 396 m (1,300 ft) to 550 m (1,800 ft). These wells supply all of the heating and part of the cooling needs of the 11-building, 62,200 m{sup 2} (670,000 ft{sup 2}) campus. The combined capacity of the well pumps is 62 L/s(980 gpm) of 89{degrees}C (192{degrees}F) geothermal fluids. Swimming pool and domestic hot water heating impose a small but nearly constant year-round flow requirement. In addition to heating, a portion of the campus is also cooled using the geothermal resource. This is accomplished through the use of an absorption chiller. The chiller, which operates on the same principle as a gas refrigerator, requires a flow of 38 L/s (600 gpm) of geothermal fluid and produces 541 kW (154 tons) of cooling capacity (Rafferty, 1989). The annual operating costs for the system is about $35,000 including maintenance salary, equipment replacement and cost of pumping. This amounts to about $0.05 per square foot per year.

  18. Geothermal Technologies Office 2015 Peer Review

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

    #› | US DOE Geothermal Office eere.energy.gov Geothermal Technologies Office 2015 Peer Review Sustainability of Shear-Induced Permeability for EGS Reservoirs - A Laboratory Study Tim Kneafsey Lawrence Berkeley National Laboratory Reservoir Fracture Characterization & Fluid Imaging Project Officer: Lauren Boyd FY15 Project Funding: $350K May 2015 This presentation does not contain any proprietary confidential, or otherwise restricted information. ‹#› | US DOE Geothermal Office

  19. Geothermal Basics

    Broader source: Energy.gov [DOE]

    Geothermal energy is thermal energy generated and stored in the Earth. Geothermal energy can manifest on the surface of the Earth, or near the surface of the Earth, where humankind may harness it to serve our energy needs. Geothermal resources are reservoirs of hot water that exist at varying temperatures and depths below the Earth's surface. Wells can be drilled into these underground reservoirs to tap steam and very hot water that can be brought to the surface for a variety of uses.

  20. Geothermal hydrothermal

    SciTech Connect (OSTI)

    None, None

    2009-01-18

    The geothermal hydrothermal section of the Renewable Energy Technology Characterizations describes the technical and economic status of this emerging renewable energy option for electricity supply.

  1. Geothermal Publications

    Broader source: Energy.gov [DOE]

    Here you'll find the Department of Energy's most recent publications about enhanced geothermal systems (EGS) technologies and research and development activities.

  2. Near-surface groundwater responses to injection of geothermal wastes

    SciTech Connect (OSTI)

    Arnold, S.C.

    1984-06-01

    This report assesses the feasibility of injection as an alternative for geothermal wastewater disposal and analyzes hydrologic controls governing the upward migration of injected fluids. Injection experiences at several geothermal developments are presented including the following: Raft River Valley, Salton Sea, East Mesa, Otake, Hatchobaru, and Ahuachapan geothermal fields.

  3. Analysis of Low-Temperature Utilization of Geothermal Resources

    Broader source: Energy.gov [DOE]

    Project objectives: Techno-economic analysis of the potential of low-temperature (90-150°C) geothermal sources. Perform process optimizations and economic analyses of processes that can utilize low-temperature geothermal fluids. Develop a regionalized model of the utilization of low-temperature geothermal resources.

  4. Geothermal Well Stimulation

    SciTech Connect (OSTI)

    Campbell, D. A.; Morris, C. W.; Sinclair, A. R.; Hanold, R. J.; Vetter, O. J.

    1981-03-01

    The stimulation of geothermal wells presents some new and challenging problems. Formation temperatures in the 300-600 F range can be expected. The behavior of stimulation fluids, frac proppants, and equipment at these temperatures in a hostile brine environment must be carefully evaluated before performance expectations can be determined. In order to avoid possible damage to the producing horizon of the formation, high temperature chemical compatibility between the in situ materials and the stimulation materials must be verified. Perhaps most significant of all, in geothermal wells the required techniques must be capable of bringing about the production of very large amounts of fluid. This necessity for high flow rates represents a significant departure from conventional petroleum well stimulation and demands the creation of very high near-wellbore permeability and/or fractures with very high flow conductivity.

  5. Category:Fluid Lab Analysis | Open Energy Information

    Open Energy Info (EERE)

    Fluid Lab Analysis Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Geothermalpower.jpg Looking for the Fluid Lab Analysis page? For detailed information on exploration...

  6. Volatiles in hydrothermal fluids- A mass spectrometric study...

    Open Energy Info (EERE)

    Volatiles in hydrothermal fluids- A mass spectrometric study of fluid inclusions from active geothermal systems Jump to: navigation, search OpenEI Reference LibraryAdd to library...

  7. Geothermal power development in Hawaii. Volume I. Review and analysis

    SciTech Connect (OSTI)

    Not Available

    1982-06-01

    The history of geothermal exploration in Hawaii is reviewed briefly. The nature and occurrences of geothermal resources are presented island by island. An overview of geothermal markets is presented. Other topies covered are: potential markets of the identified geothermal areas, well drilling technology, hydrothermal fluid transport, overland and submarine electrical transmission, community aspects of geothermal development, legal and policy issues associated with mineral and land ownership, logistics and infrastructure, legislation and permitting, land use controls, Regulation 8, Public Utilities Commission, political climate and environment, state plans, county plans, geothermal development risks, and business planning guidelines.

  8. Geothermal Energy

    SciTech Connect (OSTI)

    Steele, B.C.; Pichiarella, L.S.; Kane, L.S.; Henline, D.M.

    1995-01-01

    Geothermal Energy (GET) announces on a bimonthly basis the current worldwide information available on the technologies required for economic recovery of geothermal energy and its use as direct heat or for electric power production. This publication contains the abstracts of DOE reports, journal articles, conference papers, patents, theses, and monographs added to the Energy Science and Technology Database during the past two months.

  9. SMU Geothermal Conference 2011 - Geothermal Technologies Program |

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

    Department of Energy SMU Geothermal Conference 2011 - Geothermal Technologies Program SMU Geothermal Conference 2011 - Geothermal Technologies Program DOE Geothermal Technologies Program presentation at the SMU Geothermal Conference in June 2011. gtp_smu_conference_reinhardt_2011.pdf (1.4 MB) More Documents & Publications Low Temperature/Coproduced/Geopressured Subprogram Overview AAPG Low-Temperature Webinar Geothermal Technologies Program Peer Review Program June 6 - 10, 2011

  10. DOE Announces Geothermal Research Initiative | Department of Energy

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

    Geothermal Research Initiative DOE Announces Geothermal Research Initiative October 2, 2009 - 1:58pm Addthis The U.S. Department of Energy (DOE) announces a new collaboration between the Office of Fossil Energy (FE) and the Office of Energy Efficiency and Renewable Energy's (EERE) Geothermal Technologies Office (GTO) to demonstrate low temperature geothermal electrical power generation systems using oilfield fluids produced at the Rocky Mountain Oilfield Testing Center (RMOTC). The objective of

  11. About / FAQ | Geothermal

    Office of Scientific and Technical Information (OSTI)

    About About Geothermal The Geothermal Technologies Legacy Collection is available to the geothermal community and interested members of the public who may use this site and its ...

  12. Site Map | Geothermal

    Office of Scientific and Technical Information (OSTI)

    Site Map Site Map Home Basic Search Advanced Search Geothermal FAQ About Geothermal Site Map Geothermal Feedback Website PoliciesImportant Links

  13. Geothermal Energy (5 Activities) | Department of Energy

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

    rock to water? How does energy transferred between fluids in a binary geothermal power plant work? How does salinity affect the boiling point of water? How do the emissions...

  14. Chena Geothermal Area | Open Energy Information

    Open Energy Info (EERE)

    the winter, and is maintained using a 15 ton (53 kW) absorption chiller designed by Energy Concepts Co., which utilizes geothermal fluids.6 Forbes magazine voted the Aurora...

  15. Workshop on geothermal drilling fluids

    SciTech Connect (OSTI)

    Not Available

    1980-01-01

    Thirteen papers and abstracts are included. Seven papers were abstracted and six abstracts were listed by title. (MHR)

  16. Geothermal well stimulation program

    SciTech Connect (OSTI)

    Hanold, R.J.

    1982-01-01

    The stimulation of geothermal production wells presents some new and challenging problems. Formation temperatures in the 275 to 550/sup 0/F range can be expected and the behavior of fracturing fluids and fracture proppants at these temperatures in a hostile brine environment must be carefully evaluated in laboratory tests. To avoid possible damage to the producing horizon of the formation, the high-temperature chemical compatibility between the in situ materials and the fracturing fluids, fluid loss additives, and proppants must be verified. In geothermal wells, the necessary stimulation techniques are required to be capable of initiating and maintaining the flow of very large amounts of fluid. This necessity for high flow rates represents a significant departure from conventional oil field stimulation. The objective of well stimulation is to initiate and maintain additional fluid production from existing wells at a lower cost than either drilling new replacement wells or multiply redrilling existing wells. The economics of well stimulation will be vastly enhanced when proven stimulation techniques can be implemented as part of the well completion (while the drilling rig is still over the hole) on all new wells exhibiting some form of flow impairment. Results from 7 stimulation tests are presented and planned tests are described.

  17. New Ways to Produce Geothermal Power at Lower Temperatures | Department of

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

    Energy Ways to Produce Geothermal Power at Lower Temperatures New Ways to Produce Geothermal Power at Lower Temperatures April 15, 2013 - 2:13pm Addthis Note: This article appeared in the April 2013 issue of Power Engineering magazine. By Tim Reinhardt, physical scientist, DOE's Geothermal Technologies Office Investments by the U.S. Department of Energy (DOE) are helping to produce geothermal power at increasingly lower temperatures. While traditional geothermal energy relies on geologically

  18. Baseline System Costs for 50.0 MW Enhanced Geothermal System--A Function of: Working Fluid, Technology, and Location, Location, Location

    Broader source: Energy.gov [DOE]

    Project objectives: Develop a baseline cost model of a 50.0 MW Enhanced Geothermal System, including all aspects of the project, from finding the resource through to operation, for a particularly challenging scenario: the deep, radioactively decaying granitic rock of the Pioneer Valley in Western Massachusetts.

  19. EERE Success Story-Geothermal Technology Breakthrough in Alaska...

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

    A binary process mixes geothermal brine with a working fluid that has a lower boiling point than water. This fluid is compressed into steam to turn a turbine and generate ...

  20. Enhanced Geothermal Systems: Comparing Water and CO2 as Heat...

    Office of Scientific and Technical Information (OSTI)

    ENHANCED GEOTHERMAL SYSTEMS (EGS): COMPARING WATER AND CO 2 AS HEAT TRANSMISSION FLUIDS ... with supercritical CO 2 instead of water as heat transmission fluid (D.W. Brown, 2000). ...

  1. Neutron imaging for geothermal energy systems

    SciTech Connect (OSTI)

    Bingham, Philip R; Anovitz, Lawrence {Larry} M; Polsky, Yarom

    2013-01-01

    Geothermal systems extract heat energy from the interior of the earth using a working fluid, typically water. Three components are required for a commercially viable geothermal system: heat, fluid, and permeability. Current commercial electricity production using geothermal energy occurs where the three main components exist naturally. These are called hydrothermal systems. In the US, there is an estimated 30 GW of base load electrical power potential for hydrothermal sites. Next generation geothermal systems, named Enhanced Geothermal Systems (EGS), have an estimated potential of 4500 GW. EGSs lack in-situ fluid, permeability or both. As such, the heat exchange system must be developed or engineered within the rock. The envisioned method for producing permeability in the EGS reservoir is hydraulic fracturing, which is rarely practiced in the geothermal industry, and not well understood for the rocks typically present in geothermal reservoirs. High costs associated with trial and error learning in the field have led to an effort to characterize fluid flow and fracturing mechanisms in the laboratory to better understand how to design and manage EGS reservoirs. Neutron radiography has been investigated for potential use in this characterization. An environmental chamber has been developed that is suitable for reproduction of EGS pressures and temperatures and has been tested for both flow and precipitations studies with success for air/liquid interface imaging and 3D reconstruction of precipitation within the core.

  2. NREL: Geothermal Technologies - News

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

    Geothermal News Below are news stories involving geothermal research. May 16, 2016 NREL Helping the Bureau of Land Management Dive Further into Hot Water Geothermal program boosted by greater access to data. March 10, 2016 NREL's Geothermal Experts Present at the 41st Annual Stanford Geothermal Workshop NREL geothermal experts attend the 41st Annual Stanford Geothermal Workshop--one of the world's longest-running technical meetings on the topic of geothermal energy. March 2, 2016 U.S. Bureau of

  3. National Geothermal Summit

    Broader source: Energy.gov [DOE]

    The Geothermal Energy Association hosts its annual National Geothermal Summit in Reno, Nevada, June 3-4, 2015.

  4. Geothermal Literature Review At Long Valley Caldera Geothermal...

    Open Energy Info (EERE)

    navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Geothermal Literature Review At Long Valley Caldera Geothermal Area (Goldstein & Flexser, 1984)...

  5. Geothermal Literature Review At Lightning Dock Geothermal Area...

    Open Energy Info (EERE)

    navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Geothermal Literature Review At Lightning Dock Geothermal Area (Witcher, 2008) Exploration Activity...

  6. Geothermal Literature Review At Lightning Dock Geothermal Area...

    Open Energy Info (EERE)

    navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Geothermal Literature Review At Lightning Dock Geothermal Area (Spiegel, 1957) Exploration Activity...

  7. Geothermal Literature Review At Roosevelt Hot Springs Geothermal...

    Open Energy Info (EERE)

    navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Geothermal Literature Review At Roosevelt Hot Springs Geothermal Area (Faulder, 1991) Exploration Activity...

  8. Geothermal Literature Review At Coso Geothermal Area (1985) ...

    Open Energy Info (EERE)

    navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Geothermal Literature Review At Coso Geothermal Area (1985) Exploration Activity Details Location Coso...

  9. Geothermal Literature Review At Lightning Dock Geothermal Area...

    Open Energy Info (EERE)

    navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Geothermal Literature Review At Lightning Dock Geothermal Area (Farhar, 2002) Exploration Activity Details...

  10. Geothermal Literature Review At Geysers Geothermal Area (1984...

    Open Energy Info (EERE)

    navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Geothermal Literature Review At Geysers Geothermal Area (1984) Exploration Activity Details Location...

  11. Geothermal Literature Review At Lightning Dock Geothermal Area...

    Open Energy Info (EERE)

    navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Geothermal Literature Review At Lightning Dock Geothermal Area (Fleischman, 2006) Exploration Activity...

  12. Geothermal Literature Review At Lightning Dock Geothermal Area...

    Open Energy Info (EERE)

    navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Geothermal Literature Review At Lightning Dock Geothermal Area (Grant, 1978) Exploration Activity Details...

  13. Geothermal Literature Review At Lightning Dock Geothermal Area...

    Open Energy Info (EERE)

    navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Geothermal Literature Review At Lightning Dock Geothermal Area (Summers, 1976) Exploration Activity...

  14. Geothermal Literature Review At Lightning Dock Geothermal Area...

    Open Energy Info (EERE)

    navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Geothermal Literature Review At Lightning Dock Geothermal Area (Clemons, Et Al., 1988) Exploration...

  15. Geothermal Literature Review At Salton Trough Geothermal Area...

    Open Energy Info (EERE)

    navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Geothermal Literature Review At Salton Trough Geothermal Area (1984) Exploration Activity Details Location...

  16. Geothermal Literature Review At Lightning Dock Geothermal Area...

    Open Energy Info (EERE)

    navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Geothermal Literature Review At Lightning Dock Geothermal Area (Lienau, 1990) Exploration Activity Details...

  17. Geothermal Literature Review At Medicine Lake Geothermal Area...

    Open Energy Info (EERE)

    navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Geothermal Literature Review At Medicine Lake Geothermal Area (1984) Exploration Activity Details Location...

  18. Geothermal Literature Review At Coso Geothermal Area (1984) ...

    Open Energy Info (EERE)

    navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Geothermal Literature Review At Coso Geothermal Area (1984) Exploration Activity Details Location Coso...

  19. Geothermal Literature Review At Lightning Dock Geothermal Area...

    Open Energy Info (EERE)

    navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Geothermal Literature Review At Lightning Dock Geothermal Area (Schochet, Et Al., 2001) Exploration...

  20. Geothermal Literature Review At Roosevelt Hot Springs Geothermal...

    Open Energy Info (EERE)

    navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Geothermal Literature Review At Roosevelt Hot Springs Geothermal Area (Petersen, 1975) Exploration...

  1. Geothermal Literature Review At Lightning Dock Geothermal Area...

    Open Energy Info (EERE)

    navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Geothermal Literature Review At Lightning Dock Geothermal Area (Callender, 1981) Exploration Activity...

  2. Geothermal Data Systems

    Broader source: Energy.gov [DOE]

    The U.S. Department of Energy (DOE) Geothermal Technologies Office (GTO) has designed and tested a comprehensive, federated information system that will make geothermal data widely available. This new National Geothermal Data System (NGDS) will provide access to all types of geothermal data to enable geothermal analysis and widespread public use, thereby reducing the risk of geothermal energy development.

  3. Geothermal/Solar Hybrid Designs: Use of Geothermal Energy for...

    Office of Scientific and Technical Information (OSTI)

    GeothermalSolar Hybrid Designs: Use of Geothermal Energy for CSP Feedwater Heating Citation Details In-Document Search Title: GeothermalSolar Hybrid Designs: Use of Geothermal ...

  4. National Geothermal Data System - DOE Geothermal Data Repository...

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

    - DOE Geothermal Data Repository Presentation National Geothermal Data System - DOE Geothermal Data Repository Presentation Overview of the National Geothermal Data System (NGDS) ...

  5. Geothermal Energy | Open Energy Information

    Open Energy Info (EERE)

    Geothermal Energy Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Overview Technologies Resources Market Data Geothermal Topics Data Resources Financing Permitting &...

  6. Geothermal Brine Brings Low-Cost Power with Big Potential | Department...

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

    Thanks to a 1 million Geothermal Technologies Office investment, heat from geothermal fluids--a byproduct of gold mining--is generating electricity this year for less than 6 a ...

  7. Nevada: basic data for thermal springs and wells as recorded in GEOTHERM. Part A

    SciTech Connect (OSTI)

    Bliss, J.D.

    1983-06-01

    All chemical data for geothermal fluids in Nevada available as of December 1981 are maintained on GEOTHERM, a computerized information system. This report presents summaries and sources of records for Nevada. 7 refs. (ACR)

  8. Conceptual Model At Coso Geothermal Area (2005-2007) | Open Energy...

    Open Energy Info (EERE)

    Unknown Exploration Basis Determine most productive areas of geothermal field using stress and faulting analysis to develop a geomechanical model Notes New geologic mapping and...

  9. Thermal And-Or Near Infrared At Coso Geothermal Area (2007) ...

    Open Energy Info (EERE)

    and field data is effective for determining geothermal areas Notes Thermal infrared (TIR) data from the spaceborne ASTER instrument was used to detect surface temperature...

  10. Geothermal Progress Monitor 12

    SciTech Connect (OSTI)

    1990-12-01

    Some of the more interesting articles in this GPM are: DOE supporting research on problems at The Geysers; Long-term flow test of Hot Dry Rock system (at Fenton Hill, NM) to begin in Fiscal Year 1992; Significant milestones reached in prediction of behavior of injected fluids; Geopressured power generation experiment yields good results. A number of industry-oriented events and successes are reported, and in that regard it is noteworthy that this report comes near the end of the most active decade of geothermal power development in the U.S. There is a table of all operating U.S. geothermal power projects. The bibliography of research reports at the end of this GPM is useful. (DJE 2005)

  11. Assessing geothermal energy potential in upstate New York. Final report

    SciTech Connect (OSTI)

    Hodge, D.S.

    1996-08-01

    The potential of geothermal energy for future electric power generation in New York State is evaluated using estimates of temperatures of geothermal reservoir rocks. Bottom hole temperatures from over 2000 oil and gas wells in the region were integrated into subsurface maps of the temperatures for specific geothermal reservoirs. The Theresa/Potsdam formation provides the best potential for extraction of high volumes of geothermal fluids. The evaluation of the Theresa/Potsdam geothermal reservoir in upstate New York suggests that an area 30 miles east of Elmira, New York has the highest temperatures in the reservoir rock. The Theresa/Potsdam reservoir rock should have temperatures about 136 {degrees}C and may have as much as 450 feet of porosity in excess of 8%. Estimates of the volumes of geothermal fluids that can be extracted are provided and environmental considerations for production from a geothermal well is discussed.

  12. NREL: Geothermal Technologies - Webmaster

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

    Webmaster Please enter your name and email address in the boxes provided, then type your message below. When you are finished, click "Send Message." NOTE: If you enter your e-mail address incorrectly, we will be unable to reply. Your name: Your email address: Your message: Send Message Printable Version Geothermal Technologies Home Capabilities Projects Publications Data & Resources Research Staff Working with Us News Did you find what you needed? Yes 1 No 0 Thank you for your

  13. Burgett Geothermal Greenhouses Greenhouse Low Temperature Geothermal...

    Open Energy Info (EERE)

    Burgett Geothermal Greenhouses Sector Geothermal energy Type Greenhouse Location Cotton City, New Mexico Coordinates Show Map Loading map... "minzoom":false,"mappingservice"...

  14. The IEA's role in advanced geothermal drilling.

    SciTech Connect (OSTI)

    Hoover, Eddie Ross; Jelacic, Allan; Finger, John Travis; Tyner, Craig E.

    2004-06-01

    This paper describes an 'Annex', or task, that is part of the International Energy Agency's Geothermal Implementing Agreement. Annex 7 is aimed at improving the state of the art in geothermal drilling, and has three subtasks: an international database on drilling cost and performance, a 'best practices' drilling handbook, and collaborative testing among participating countries. Drilling is an essential and expensive part of geothermal exploration, production, and maintenance. High temperature, corrosive fluids, and hard, fractured formations increase the cost of drilling, logging, and completing geothermal wells, compared to oil and gas. Cost reductions are critical because drilling and completing the production and injection well field can account for approximately half the capital cost for a geothermal power project. Geothermal drilling cost reduction can take many forms, e.g., faster drilling rates, increased bit or tool life, less trouble (twist-offs, stuck pipe, etc.), higher per-well production through multilaterals, and others. Annex 7 addresses all aspects of geothermal well construction, including developing a detailed understanding of worldwide geothermal drilling costs, understanding geothermal drilling practices and how they vary across the globe, and development of improved drilling technology. Objectives for Annex 7 include: (1) Quantitatively understand geothermal drilling costs and performance from around the world and identify ways to improve costs, performance, and productivity. (2) Identify and develop new and improved technologies for significantly reducing the cost of geothermal well construction. (3) Inform the international geothermal community about these drilling technologies. (4) Provide a vehicle for international cooperation, collaborative field tests, and data sharing toward the development and demonstration of improved geothermal drilling technology.

  15. Geothermal Technologies | Open Energy Information

    Open Energy Info (EERE)

    Geothermal Technologies Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Print PDF Geothermal Technologies Geothermal energy can be utilized for electricity or heating...

  16. CE Geothermal | Open Energy Information

    Open Energy Info (EERE)

    Geothermal Jump to: navigation, search Name: CE Geothermal Place: California Sector: Geothermal energy Product: CE Geothermal previously owned the assets of Western States...

  17. Geothermal Energy | Open Energy Information

    Open Energy Info (EERE)

    Geothermal Energy (Redirected from Geothermal power) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Overview Technologies Resources Market Data Geothermal Topics Data...

  18. Geothermal energy geopressure subprogram

    SciTech Connect (OSTI)

    Not Available

    1981-02-01

    The proposed action will consist of drilling one geopressured-geothermal resource fluid well for intermittent production testing over the first year of the test. During the next two years, long-term testing of 40,000 BPD will be flowed. A number of scenarios may be implemented, but it is felt that the total fluid production will approximate 50 million barrels. The test well will be drilled with a 22 cm (8.75 in.) borehole to a total depth of approximately 5185 m (17,000 ft). Up to four disposal wells will provide disposal of the fluid from the designated 40,000 BPD test rate. The following are included in this assessment: the existing environment; probable environmental impacts-direct and indirect; probable cumulative and long-term environmental impacts; accidents; coordination with federal, state, regional, and local agencies; and alternative actions. (MHR)

  19. Using geothermal energy to heat a portion of a formation for an in situ heat treatment process

    DOE Patents [OSTI]

    Pieterson, Roelof; Boyles, Joseph Michael; Diebold, Peter Ulrich

    2010-06-08

    Methods of using geothermal energy to treat subsurface formations are described herein. Methods for using geothermal energy to treat a subsurface treatment area containing or proximate to hydrocarbons may include producing geothermally heated fluid from at least one subsurface region. Heat from at least a portion of the geothermally heated fluid may be transferred to the subsurface treatment area to heat the subsurface treatment area. At least some hydrocarbon fluids may be produced from the formation.

  20. OTS NOTE

    Office of Legacy Management (LM)

    c3 Alexander Williams FROM: Ed Mitchellcm SUBJECT: Babcock and Wilcox Elimination Recommendation The purpose of this note is to provide you with certain inf regarding the ...

  1. OTS NOTE

    Office of Legacy Management (LM)

    941 OTS NOTE DATE: July 2, 1990 TO: W. Alexander Williams FROM : Don Mackenzie d%? SUBJECT: Elimination of 3 Facilities from NSRAP . + 9 Enclosed are elimination recommendations...

  2. Energy Department Announces $3 Million to Identify New Geothermal Resources

    Broader source: Energy.gov [DOE]

    The U.S. Department of Energy today announced $3 million to spur geothermal energy development using play fairway analysis. This technique identifies prospective geothermal resources in areas with no obvious surface expression by mapping the most favorable intersections of heat, permeability, and fluid. While commonly used in oil and gas exploration, play fairway analysis is not yet widely used in the geothermal industry. By improving success rates for exploration drilling, this data-mapping tool could help attract investment in geothermal energy projects and significantly lower the costs of geothermal energy.

  3. Geothermal Energy Basics | NREL

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

    Information Resources » Geothermal Basics Geothermal Basics Geothermal heat is most prevalent in the western United States, where the heat resource can sometimes be spotted from the earth's surface. Geothermal heat is most prevalent in the western United States, where the heat resource can sometimes be spotted from the earth's surface. Geothermal energy-geo (earth) + thermal (heat)-is heat energy from the earth. What is a geothermal resource? Geothermal resources are reservoirs of hot water

  4. Session: Geopressured-Geothermal

    SciTech Connect (OSTI)

    Jelacic, Allan J.; Eaton, Ben A.; Shook, G. Michael; Birkinshaw, Kelly; Negus-de Wys, Jane

    1992-01-01

    This session at the Geothermal Energy Program Review X: Geothermal Energy and the Utility Market consisted of five presentations: ''Overview of Geopressured-Geothermal'' by Allan J. Jelacic; ''Geothermal Well Operations and Automation in a Competitive Market'' by Ben A. Eaton; ''Reservoir Modeling and Prediction at Pleasant Bayou Geopressured-Geothermal Reservoir'' by G. Michael Shook; ''Survey of California Geopressured-Geothermal'' by Kelly Birkinshaw; and ''Technology Transfer, Reaching the Market for Geopressured-Geothermal Resources'' by Jane Negus-de Wys.

  5. Geothermal Technologies Program Overview Presentation at Stanford...

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

    Overview Presentation at Stanford Geothermal Workshop Geothermal Technologies Program Overview Presentation at Stanford Geothermal Workshop General overview of Geothermal ...

  6. Geothermal Technologies Office - Webmaster | Department of Energy

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

    - Webmaster Geothermal Technologies Office - Webmaster

  7. Okeanskaya Geothermal Power Plant | Open Energy Information

    Open Energy Info (EERE)

    Okeanskaya Geothermal Power Plant Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Okeanskaya Geothermal Power Plant General Information Name Okeanskaya Geothermal...

  8. Resource assessment for geothermal direct use applications

    SciTech Connect (OSTI)

    Beer, C.; Hederman, W.F. Jr.; Dolenc, M.R.; Allman, D.W.

    1984-04-01

    This report discusses the topic geothermal resource assessment and its importance to laymen and investors for finding geothermal resources for direct-use applications. These are applications where the heat from lower-temperature geothermal fluids, 120 to 200/sup 0/F, are used directly rather than for generating electricity. The temperatures required for various applications are listed and the various types of geothermal resources are described. Sources of existing resource data are indicated, and the types and suitability of tests to develop more data are described. Potential development problems are indicated and guidance is given on how to decrease technical and financial risk and how to use technical consultants effectively. The objectives of this report are to provide: (1) an introduction low-temperature geothermal resource assessment; (2) experience from a series of recent direct-use projects; and (3) references to additional information.

  9. Chemical Logging At North Brawley Geothermal Area (Department...

    Open Energy Info (EERE)

    Chemical logs were made from well fluids for analysis when designing the first experimental power plant Notes Detailed logs of well fluids were recorded. Non-condensable gases...

  10. Numerical Modeling At Coso Geothermal Area (2006) | Open Energy...

    Open Energy Info (EERE)

    transport and exchange analysis Notes Finite element models of single-phase, variable-density fluid flow, conductive- convective heat transfer, fluid-rock isotope exchange, and...

  11. Enhanced Geothermal Systems Demonstration Projects

    SciTech Connect (OSTI)

    Geothermal Technologies Office

    2013-08-06

    Several Enhanced Geothermal Systems (EGS) demonstration projects are highlighted on this Geothermal Technologies Office Web page.

  12. Ground Magnetics At Kilauea East Rift Geothermal Area (FURUMOTO...

    Open Energy Info (EERE)

    potential as part of the coordinated exploration program for geothermal sources on the Big Island of Hawaii. Notes A large amount of magnetic data was recovered in this survey;...

  13. Micro-Earthquake At Kilauea East Rift Geothermal Area (FURUMOTO...

    Open Energy Info (EERE)

    potential as part of the coordinated exploration program for geothermal sources on the Big Island of Hawaii. Notes A two week micro-seismic study in the Puna district was...

  14. Thermal Gradient Holes At Chena Geothermal Area (EERE, 2010)...

    Open Energy Info (EERE)

    Exploration program undertaken during Phase II of the DOE-funded Geothermal Resource Evaluation and Definitions Program Phase I (GRED III Phase II) Notes A deeper well, TG-12,...

  15. Hot Dry Rock; Geothermal Energy

    SciTech Connect (OSTI)

    1990-01-01

    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

  16. Geothermal Testing Facilities in an Oil Field

    Broader source: Energy.gov [DOE]

    Engineered Geothermal Systems, Low Temp, Exploration Demonstration. The proposed project is to develop a long term testing facility and test geothermal power units for the evaluation of electrical power generation from low-temperature and co-produced fluids. The facility will provide the ability to conduct both long and short term testing of different power generation configurations to determine reliability, efficiency and to provide economic evaluation data.

  17. Enhanced Geothermal Systems | Department of Energy

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

    Enhanced Geothermal Systems Enhanced Geothermal Systems EGS-2-pager8-1 1.17.28 PM.jpg Steps to Develop Power Production at an EGS Site Step 1: Identify/Characterize a Site Develop a geologic model of a potential site via surface, geologic, geophysical, and remote sensing exploration. Assess the temperature gradient, permeability, in-situ stress directions of the resource, rock mechanical properties, and whether fluid is present. Determine if the necessary characteristics to create an EGS

  18. Blue Note

    ScienceCinema (OSTI)

    Murray Gibson

    2010-01-08

    Argonne's Murray Gibson is a physicist whose life's work includes finding patterns among atoms. The love of distinguishing patterns also drives Gibson as a musician and Blues enthusiast."Blue" notes are very harmonic notes that are missing from the equal temperament scale.The techniques of piano blues and jazz represent the melding of African and Western music into something totally new and exciting.

  19. Blue Note

    SciTech Connect (OSTI)

    Murray Gibson

    2007-04-27

    Argonne's Murray Gibson is a physicist whose life's work includes finding patterns among atoms. The love of distinguishing patterns also drives Gibson as a musician and Blues enthusiast."Blue" notes are very harmonic notes that are missing from the equal temperament scale.The techniques of piano blues and jazz represent the melding of African and Western music into something totally new and exciting.

  20. Geothermal tomorrow 2008

    SciTech Connect (OSTI)

    None, None

    2009-01-18

    Contributors from the Geothermal Technologies Program and the geothermal community highlight the current status and activities of the Program and the development of the global resource of geothermal energy.

  1. National Geothermal Summit

    Broader source: Energy.gov [DOE]

    The Geothermal Energy Association (GEA) will be holding it’s fifth annual National Geothermal Summit on June 3-4 at the Grand Sierra Resort and Casino in Reno, NV. The National Geothermal Summit is...

  2. Geothermal FAQs | Department of Energy

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

    Basics » Geothermal FAQs Geothermal FAQs Read our frequently asked questions and their answers to learn more about the use of geothermal energy. What are the benefits of using geothermal energy? Why is geothermal energy a renewable resource? Where is geothermal energy available? What are the environmental impacts of using geothermal energy? What is the visual impact of geothermal technologies? Is it possible to deplete geothermal reservoirs? How much does geothermal energy cost per

  3. Texas: basic data for thermal springs and wells as recorded in GEOTHERM

    SciTech Connect (OSTI)

    Bliss, J.D.

    1983-07-01

    This compilation identities all locations of potential source of geothermal fluids in Texas available as of December 1981. 7 refs. (ACR)

  4. Finite-Element Simulation Of Hot-Water-Type Geothermal Reservoirs...

    Open Energy Info (EERE)

    differential equations are based upon constant physical parameters (except fluid density) and formulated for hot-water-type geothermal reservoirs. A simultaneous solution...

  5. Steamboat Springs Geothermal Area | Open Energy Information

    Open Energy Info (EERE)

    Facility Steamboat Hills Geothermal Facility Steamboat I Geothermal Facility Steamboat IA Geothermal Facility Steamboat II Geothermal Facility Steamboat III Geothermal Facility...

  6. Nagqu Geothermal Power Plant | Open Energy Information

    Open Energy Info (EERE)

    Name Nagqu Geothermal Power Plant Facility Geothermal Power Plant Sector Geothermal energy Location Information Geothermal Resource Area Geothermal Region Plant Information...

  7. Geothermal probabilistic cost study

    SciTech Connect (OSTI)

    Orren, L.H.; Ziman, G.M.; Jones, S.C.; Lee, T.K.; Noll, R.; Wilde, L.; Sadanand, V.

    1981-08-01

    A tool is presented to quantify the risks of geothermal projects, the Geothermal Probabilistic Cost Model (GPCM). The GPCM model is used to evaluate a geothermal reservoir for a binary-cycle electric plant at Heber, California. Three institutional aspects of the geothermal risk which can shift the risk among different agents are analyzed. The leasing of geothermal land, contracting between the producer and the user of the geothermal heat, and insurance against faulty performance are examined. (MHR)

  8. Klamath and Lake Counties Agricultural Industrial Park; 2010 Geothermal

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

    Technology Program Peer Review Report | Department of Energy Park; 2010 Geothermal Technology Program Peer Review Report Klamath and Lake Counties Agricultural Industrial Park; 2010 Geothermal Technology Program Peer Review Report DOE 2010 Geothermal Technologies Program Peer Review lowtemp_013_riley.pdf (222.49 KB) More Documents & Publications Microseismic Study with LBNL - Monitoring the Effect of Injection of Fluids from the Lake County Pipeline on Seismicity at The Geysers,

  9. Note on one-fluid modeling of low-frequency Alfvénic fluctuations in a solar wind plasma with multi-ion components

    SciTech Connect (OSTI)

    Nariyuki, Y.; Umeda, T.; Suzuki, T. K.; Hada, T.

    2015-12-15

    A simple point of view that non-zero Alfvén ratio (residual energy) appears as a consequence of one-fluid modeling of uni-directional Alfvén waves in a solar wind plasma is presented. Since relative speeds among ions are incorporated into the one-fluid model as a pressure anisotropy, the Alfvén ratio can be finite due to the decrease in the phase velocity. It is shown that a proton beam component typically found in the solar wind plasma can contribute to generating non-zero Alfvén ratio observed in the solar wind plasma. Local equilibrium velocity distribution functions of each ion component are also discussed by using maximum entropy principle.

  10. Geothermal Resources Council's ...

    Office of Scientific and Technical Information (OSTI)

    Enhanced Geothermal Systems (EGS) applications recommend lifting 300C geothermal water ... Therefore artificial lift techniques must be employed to return the high temperature water ...

  11. Director, Geothermal Technologies Office

    Broader source: Energy.gov [DOE]

    The mission of the Geothermal Technologies Office (GTO) is to accelerate the development and deployment of clean, domestic geothermal resources that will promote a stronger, more productive economy...

  12. Geothermal Technologies Office March

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

    ... supplying new applications for geothermal power, some geothermal brines are turning up relatively high concentrations of rare earth elements (REEs) and other valu- able materials. ...

  13. Geothermal Data Repository

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

    About DOE's Geothermal Data Repository The GDR is the submission point for all data collected from researchers funded by the U.S. Department of Energy's Geothermal Technologies...

  14. Geothermal | Department of Energy

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

    Geothermal energy plant at The Geysers near Santa Rosa in Northern California, the world's largest electricity-generating geothermal development. | Photo courtesy of the National...

  15. Imperial Valley Geothermal Area

    Broader source: Energy.gov [DOE]

    The Imperial Valley Geothermal project consists of 10 generating plants in the Salton Sea Known Geothermal Resource Area in Southern California's Imperial Valley. The combined capacity at Imperial...

  16. Estimate of Geothermal Energy Resource in Major U.S. Sedimentary Basins (Presentation), NREL (National Renewable Energy Laboratory)

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

    ESTIMATE OF GEOTHERMAL ENERGY RESOURCE IN MAJOR U.S. SEDIMENTARY BASINS Colleen Porro and Chad Augustine April 24, 2012 National Renewable Energy Lab, Golden, CO NREL/PR-6A20-55017 NATIONAL RENEWABLE ENERGY LABORATORY Sedimentary Basin Geothermal WHAT IS SEDIMENTARY BASIN GEOTHERMAL? 2 Geothermal Energy from Sedimentary Rock - Using hot" geothermal fluids (>100 o C) produced from sedimentary basins to generate electricity - Advantages: * Reservoirs are porous, permeable, and well

  17. Heating the New Mexico Tech Campus with geothermal energy. Final report, July 1, 1978-October 31, 1979

    SciTech Connect (OSTI)

    LeFebre, V.; Miller, A.

    1980-01-01

    An area between the base of Socorro Peak and the New Mexico Tech Campus (located in central New Mexico) has been proposed as a site for geothermal exploratory drilling. The existing site environment is summarized, a program for site monitoring is proposed, impacts of geothermal production and reinjection are listed, and problems associated with geothermal development are examined. The most critical environmental impact is the increased seismic activity that may be associated with geothermal fluid migration resulting from geothermal production and reinjection.

  18. Nuova Sasso Geothermal Power Station | Open Energy Information

    Open Energy Info (EERE)

    General Information Name Nuova Sasso Geothermal Power Station Sector Geothermal energy Location Information Geothermal Resource Area Larderello Geothermal Area Geothermal...

  19. Geothermal research at the Puna Facility. Technical report

    SciTech Connect (OSTI)

    Chen, B.

    1986-04-01

    This report consists of a summary of the experiments performed to date at the Puna Geothermal Research Facility on silica in the geothermal fluid from the HGP-A well. Also presented are some results of investigations in commercial applications of the precipitated silica. (ACR)

  20. Geothermal Today: 2005 Geothermal Technologies Program Highlights

    SciTech Connect (OSTI)

    Not Available

    2005-09-01

    This DOE/EERE Geothermal Technologies Program publication highlights accomplishments and activities of the program during the last two years.

  1. Geothermal Literature Review At Lightning Dock Geothermal Area...

    Open Energy Info (EERE)

    Smith, 1978) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Geothermal Literature Review At Lightning Dock Geothermal Area (Smith, 1978)...

  2. Geothermal Literature Review At Lightning Dock Geothermal Area...

    Open Energy Info (EERE)

    navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Geothermal Literature Review At Lightning Dock Geothermal Area (Elston, Et Al., 1983) Exploration Activity...

  3. Geothermal Literature Review At Lightning Dock Geothermal Area...

    Open Energy Info (EERE)

    navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Geothermal Literature Review At Lightning Dock Geothermal Area (Dahal, Et Al., 2012) Exploration Activity...

  4. Geothermal Literature Review At Lightning Dock Geothermal Area...

    Open Energy Info (EERE)

    navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Geothermal Literature Review At Lightning Dock Geothermal Area (Stone, Et Al., 1977) Exploration Activity...

  5. Geothermal Literature Review At Fenton Hill HDR Geothermal Area...

    Open Energy Info (EERE)

    navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Geothermal Literature Review At Fenton Hill HDR Geothermal Area (Goff & Decker, 1983) Exploration Activity...

  6. Geothermal br Resource br Area Geothermal br Resource br Area...

    Open Energy Info (EERE)

    Aluto Langano Geothermal Area Aluto Langano Geothermal Area East African Rift System Ethiopian Rift Valley Major Normal Fault Basalt MW K Amatitlan Geothermal Area Amatitlan...

  7. Geothermal Literature Review At Lightning Dock Geothermal Area...

    Open Energy Info (EERE)

    Lightning Dock Geothermal Area (Witcher, Et Al., 2002) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Geothermal Literature Review At Lightning...

  8. Geothermal Literature Review At Lightning Dock Geothermal Area...

    Open Energy Info (EERE)

    Witcher, 2002) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Geothermal Literature Review At Lightning Dock Geothermal Area (Witcher, 2002)...

  9. Geothermal Literature Review At Lightning Dock Geothermal Area...

    Open Energy Info (EERE)

    Parker & Icerman, 1988) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Geothermal Literature Review At Lightning Dock Geothermal Area (Parker &...

  10. Geothermal Literature Review At Lightning Dock Geothermal Area...

    Open Energy Info (EERE)

    Sammel, 1978) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Geothermal Literature Review At Lightning Dock Geothermal Area (Sammel, 1978)...

  11. Geothermal Literature Review At Lightning Dock Geothermal Area...

    Open Energy Info (EERE)

    Rafferty, 1997) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Geothermal Literature Review At Lightning Dock Geothermal Area (Rafferty, 1997)...

  12. Geothermal Literature Review At Coso Geothermal Area (1987) ...

    Open Energy Info (EERE)

    7) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Geothermal Literature Review At Coso Geothermal Area (1987) Exploration Activity Details...

  13. National Geothermal Data System (NGDS) Geothermal Data Domain...

    Open Energy Info (EERE)

    Geothermal Data System (NGDS) Geothermal Data Domain: Assessment of Geothermal Community Data Needs Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference...

  14. Klamath Falls geothermal field, Oregon

    SciTech Connect (OSTI)

    Lienau, P.J.; Culver, G.; Lund, J.W.

    1989-09-01

    Klamath Falls, Oregon, is located in a Known Geothermal Resource Area which has been used by residents, principally to obtain geothermal fluids for space heating, at least since the turn of the century. Over 500 shallow-depth wells ranging from 90 to 2,000 ft (27 to 610 m) in depth are used to heat (35 MWt) over 600 structures. This utilization includes the heating of homes, apartments, schools, commercial buildings, hospital, county jail, YMCA, and swimming pools by individual wells and three district heating systems. Geothermal well temperatures range from 100 to 230{degree}F (38 to 110{degree}C) and the most common practice is to use downhole heat exchangers with city water as the circulating fluid. Larger facilities and district heating systems use lineshaft vertical turbine pumps and plate heat exchangers. Well water chemistry indicates approximately 800 ppM dissolved solids, with sodium sulfate having the highest concentration. Some scaling and corrosion does occur on the downhole heat exchangers (black iron pipe) and on heating systems where the geo-fluid is used directly. 73 refs., 49 figs., 6 tabs.

  15. Renewable Energy Technologies - Geothermal Energy

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

    Technologies Geothermal Energy Geothermal Energy Bruce Green, 303-275-3621, bruce_green@nrel.gov Geothermal Energy is Heat Geothermal Energy is Heat from the Earth. from the Earth. How Geothermal Energy is Used: *Electricity Generation *Direct Thermal Use *Geothermal Heat Pumps, also called Geoexchange Units or Ground-Coupled Heat Pumps. Courtesy of Geothermal Education Association Tectonic Plate Boundaries Tectonic Plate Boundaries Hottest Known Geothermal Hottest Known Geothermal Regions

  16. Isotopic Analysis- Fluid At Salt Wells Area (Shevenell & Garside...

    Open Energy Info (EERE)

    At Salt Wells Area (Shevenell & Garside, 2003) Exploration Activity Details Location Salt Wells Geothermal Area Exploration Technique Isotopic Analysis- Fluid Activity Date 2002 -...

  17. Fluid Inclusion Stratigraphy Interpretation of New Wells in the...

    Open Energy Info (EERE)

    Stratigraphy Interpretation of New Wells in the Coso Geothermal Field Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference Paper: Fluid Inclusion...

  18. Fluid Inclusion Analysis At Lightning Dock Area (Norman & Moore...

    Open Energy Info (EERE)

    Lightning Dock Area (Norman & Moore, 2004) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Fluid Inclusion Analysis At Lightning Dock Area...

  19. Fluid Inclusion Analysis At Geysers Area (Moore, Et Al., 2001...

    Open Energy Info (EERE)

    Area (Moore, Et Al., 2001) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Fluid Inclusion Analysis At Geysers Area (Moore, Et Al., 2001)...

  20. Fluid Inclusion Analysis At Yellowstone Region (Sturchio, Et...

    Open Energy Info (EERE)

    Yellowstone Region (Sturchio, Et Al., 1990) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Fluid Inclusion Analysis At Yellowstone Region...

  1. Isotopic Analysis- Fluid At Valles Caldera - Sulphur Springs...

    Open Energy Info (EERE)

    Activity: Isotopic Analysis- Fluid At Valles Caldera - Sulphur Springs Geothermal Area (Goff, Et Al., 1982) Exploration Activity Details Location Valles Caldera - Sulphur Springs...

  2. Isotopic Analysis- Fluid At Valles Caldera - Sulphur Springs...

    Open Energy Info (EERE)

    Activity: Isotopic Analysis- Fluid At Valles Caldera - Sulphur Springs Geothermal Area (Goff, Et Al., 1985) Exploration Activity Details Location Valles Caldera - Sulphur Springs...

  3. Geothermal reservoirs in hydrothermal convection systems

    SciTech Connect (OSTI)

    Sorey, M.L.

    1982-01-01

    Geothermal reservoirs commonly exist in hydrothermal convection systems involving fluid circulation downward in areas of recharge and upwards in areas of discharge. Because such reservoirs are not isolated from their surroundings, the nature of thermal and hydrologic connections with the rest of the system may have significant effects on the natural state of the reservoir and on its response to development. Conditions observed at numerous developed and undeveloped geothermal fields are discussed with respect to a basic model of the discharge portion of an active hydrothermal convection system. Effects of reservoir development on surficial discharge of thermal fluid are also delineated.

  4. Geothermal Tomorrow 2008

    SciTech Connect (OSTI)

    Not Available

    2008-09-01

    Brochure describing the recent activities and future research direction of the DOE Geothermal Program.

  5. Geothermal Prospects in Colorado

    Broader source: Energy.gov [DOE]

    Geothermal Prospects in Colorado presentation at the April 2013 peer review meeting held in Denver, Colorado.

  6. Geothermal Technologies Newsletter

    Broader source: Energy.gov [DOE]

    The U.S. Department of Energy's (DOE) Geothermal Technologies Newsletter features the latest information about its geothermal research and development efforts. The Geothermal Resources Council (GRC)— a tax-exempt, non-profit, geothermal educational association — publishes quarterly as an insert in its GRC Bulletin.

  7. Alaska geothermal bibliography

    SciTech Connect (OSTI)

    Liss, S.A.; Motyka, R.J.; Nye, C.J.

    1987-05-01

    The Alaska geothermal bibliography lists all publications, through 1986, that discuss any facet of geothermal energy in Alaska. In addition, selected publications about geology, geophysics, hydrology, volcanology, etc., which discuss areas where geothermal resources are located are included, though the geothermal resource itself may not be mentioned. The bibliography contains 748 entries.

  8. Geothermal Technologies Program - Washington

    SciTech Connect (OSTI)

    2005-02-01

    This fact sheets provides a summary of geothermal potential, issues, and current development in Washington State.

  9. Video Resources on Geothermal Technologies

    Broader source: Energy.gov [DOE]

    Geothermal video offerings at the Department of Energy include simple interactive illustrations of geothermal power technologies and interviews on initiatives in the Geothermal Technologies Office.

  10. Geothermal Heat Pump Manufacturing Activities

    Annual Energy Outlook [U.S. Energy Information Administration (EIA)]

    Type of Activity 2008 2009 Geothermal Heat Pump or System Design 17 17 Prototype Geothermal Heat Pump Development 12 13 Prototype Systems Geothermal Development 5 7 Wholesale ...

  11. OHm Geothermal | Open Energy Information

    Open Energy Info (EERE)

    to: navigation, search Name: OHm Geothermal Place: Fernley, Nevada Zip: 89408 Sector: Geothermal energy Product: A Nevada-based geothermal energy development company....

  12. Geothermal Generation | Open Energy Information

    Open Energy Info (EERE)

    Geothermal Generation This article is a stub. You can help OpenEI by expanding it. Global Geothermal Energy Generation Global Geothermal Electricity Generation in 2007 (in millions...

  13. Geothermal Technologies | Open Energy Information

    Open Energy Info (EERE)

    to: navigation, search GEOTHERMAL ENERGYGeothermal Home Print PDF Geothermal Technologies Geothermal energy can be utilized for electricity or heating in more than one way....

  14. Geothermal energy | Open Energy Information

    Open Energy Info (EERE)

    Geothermal energy Jump to: navigation, search Dictionary.png Geothermal energy: Geothermal energy is heat extracted from the Earth ( Geo (Earth) + thermal (heat) ) Other...

  15. Exploratory Well At Dixie Valley Geothermal Area (Allis, Et Al...

    Open Energy Info (EERE)

    An approximate discharge of hot geothermal fluid of about 5 ls is estimated from the models, this equates to a loss of about 56 MW. References R. G. Allis, Stuart D. Johnson,...

  16. Seismic Velocity And Attenuation Structure Of The Geysers Geothermal...

    Open Energy Info (EERE)

    of the world's largest producers of electricity from geothermal energy. A key resource management issue at this field is the distribution of fluid in the matrix of the reservoir...

  17. Stepout-Deepening Wells At Coso Geothermal Area (1986) | Open...

    Open Energy Info (EERE)

    fluids with a temperature greater than 640 F. References Austin, C.F.; Bishop, B.P.; Moore, J. (1 May 1987) Structural interpretation of Coso Geothermal field, Inyo County,...

  18. Conceptual Model At Coso Geothermal Area (2006) | Open Energy...

    Open Energy Info (EERE)

    created using cross-sections and fence diagrams. References Dilley, L.M.; Norman, D.I.; Moore, J.; McCullouch, J. (1 January 2006) FLUID STRATIGRAPHY OF THE COSO GEOTHERMAL...

  19. Groundwater Sampling At Raft River Geothermal Area (2004-2011...

    Open Energy Info (EERE)

    limited the degree of mixing between them. References Ayling, B.; Molling, P.; Nye, R.; Moore, J. (1 January 2011) FLUID GEOCHEMISTRY AT THE RAFT RIVER GEOTHERMAL FIELD, IDAHO- NEW...

  20. Tracer Testing At Coso Geothermal Area (2006) | Open Energy Informatio...

    Open Energy Info (EERE)

    and two-phase tracers in fluid-depleted geothermal fields. References Mella, M.; Rose, P.; McCulloch, J.; Buck, C. (1 January 2006) A Tracer Test Using Ethanol as a...

  1. A Hydro-Thermo-Mechanical Numerical Model For Hdr Geothermal...

    Open Energy Info (EERE)

    on the fluid flow distribution in an HDR geothermal reservoir. Authors T. W. Hicks, R. J. Pine, J. Willis-Richards, S. Xu, A. J. Jupe and N. E. V. Rodrigues Published Journal...

  2. Fault-related CO2 degassing, geothermics, and fluid flow in southern California basins---Physiochemical evidence and modeling

    SciTech Connect (OSTI)

    Boles, James R.; Garven, Grant

    2015-08-04

    Our studies have had an important impact on societal issues. Experimental and field observations show that CO2 degassing, such as might occur from stored CO2 reservoir gas, can result in significant stable isotopic disequilibrium. In the offshore South Ellwood field of the Santa Barbara channel, we show how oil production has reduced natural seep rates in the area, thereby reducing greenhouse gases. Permeability is calculated to be ~20-30 millidarcys for km-scale fault-focused fluid flow, using changes in natural gas seepage rates from well production, and poroelastic changes in formation pore-water pressure. In the Los Angeles (LA) basin, our characterization of formation water chemistry, including stable isotopic studies, allows the distinction between deep and shallow formations waters. Our multiphase computational-based modeling of petroleum migration demonstrates the important role of major faults on geological-scale fluid migration in the LA basin, and show how petroleum was dammed up against the Newport-Inglewood fault zone in a “geologically fast” interval of time (less than 0.5 million years). Furthermore, these fluid studies also will allow evaluation of potential cross-formational mixing of formation fluids. Lastly, our new study of helium isotopes in the LA basin shows a significant leakage of mantle helium along the Newport Inglewood fault zone (NIFZ), at flow rates up to 2 cm/yr. Crustal-scale fault permeability (~60 microdarcys) and advective versus conductive heat transport rates have been estimated using the observed helium isotopic data. The NIFZ is an important deep-seated fault that may crosscut a proposed basin decollement fault in this heavily populated area, and appears to allow seepage of helium from the mantle sources about 30 km beneath Los Angeles. The helium study has been widely cited in recent weeks by the news media, both in radio and on numerous web sites.

  3. NREL: Geothermal Technologies - Capabilities

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

    Capabilities The NREL geothermal team leverages its capabilities in several different areas to enhance the visibility of geothermal technologies. These areas include low-temperature resources; enhanced geothermal systems; strategic planning, analysis, and modeling; and project assessment. Low-Temperature Geothermal Resources NREL works to develop and deploy innovative new technologies that will help the geothermal community achieve widespread adoption of under-utilized low-temperature resources

  4. NREL: Geothermal Technologies - Projects

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

    Projects The NREL geothermal team is involved in various projects to help accelerate the development and deployment of clean, renewable geothermal technologies, including low-temperature resources; enhanced geothermal systems; strategic planning, analysis, and modeling; and project assessment. Low-Temperature Geothermal Resources NREL supports the U.S. Department of Energy's (DOE) Geothermal Technologies Office (GTO) through various collaborations that evaluate the levelized cost of electricity

  5. Geothermal Technologies Office April

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

    Annual Report Geothermal Technologies Office April 2016 1 2015 Annual Report | Geothermal Technologies Office Director's Message Geothermal Technologies Office FY 2016 Budget at a Glance Enhanced Geothermal Systems Hydrothermal Program Low-Temperature and Coproduced Resources Systems Analysis Events and Highlights People Acronyms Resources Table of Contents 2 2 3 7 13 17 19 23 26 28 2015 Achievements Geothermal Technologies Office Steam, West Flank of Coso, NV The 2015 Annual Report of the

  6. Geothermal direct use engineering and design guidebook

    SciTech Connect (OSTI)

    Bloomquist, R.G.; Culver, G.; Ellis, P.F.; Higbee, C.; Kindle, C.; Lienau, P.J.; Lunis, B.C.; Rafferty, K.; Stiger, S.; Wright, P.M.

    1989-03-01

    The Geothermal Direct Use Engineering and Design Guidebook is designed to be a comprehensive, thoroughly practical reference guide for engineers and designers of direct heat projects. These projects could include the conversion of geothermal energy into space heating cooling of buildings, district heating, greenhouse heating, aquaculture and industrial processing. The Guidebook is directed at understanding the nature of geothermal resources and the exploration of these resources, fluid sampling techniques, drilling, and completion of geothermal wells through well testing, and reservoir evaluation. It presents information useful to engineers on the specification of equipment including well pumps, piping, heat exchangers, space heating equipment, heat pumps and absorption refrigeration. A compilation of current information about greenhouse, aquaculture and industrial applications is included together with a discussion of engineering cost analysis, regulation requirements, and environmental considerations. The purpose of the Guidebook is to provide an integrated view for the development of direct use projects for which there is a very potential in the United States.

  7. Geothermal direct use engineering and design guidebook

    SciTech Connect (OSTI)

    Lienau, P.J.; Lunis, B.C.

    1991-01-01

    The Geothermal Direct Use Engineering and Design Guidebook is designed to be a comprehensive, thoroughly practical reference guide for engineers and designers of direct heat projects. These projects could include the conversion of geothermal energy into space heating and cooling of buildings, district heating, greenhouse heating, aquaculture and industrial processing. The Guidebook is directed at understanding the nature of geothermal resources and the exploration of the resources, fluid sampling techniques, drilling, and completion of geothermal wells through well testing, and reservoir evaluation. It presents information useful to engineers on the specification of equipment including well pumps, piping, heat exchangers, space heating equipment, heat pumps and absorption refrigeration. A compilation of current information about greenhouse aquaculture and industrial applications is included together with a discussion of engineering cost analysis, regulation requirements, and environmental consideration. The purpose of the Guidebook is to provide an integrated view for the development of direct use projects for which there is a very large potential in the United States.

  8. NREL: Geothermal Technologies - NREL's Geothermal Experts Present at the

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

    41st Annual Stanford Geothermal Workshop NREL's Geothermal Experts Present at the 41st Annual Stanford Geothermal Workshop March 10, 2016 Six members of our geothermal community, accompanied by Bud Johnston, NREL's new geothermal laboratory program manager, attended the 41st Annual Stanford Geothermal Workshop--one of the world's longest-running technical meetings on the topic of geothermal energy. The Stanford Geothermal Workshop brings together engineers, scientists, and managers involved

  9. Iceland Geothermal Conference 2013 - Geothermal Policies and Impacts in the

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

    U.S. | Department of Energy Iceland Geothermal Conference 2013 - Geothermal Policies and Impacts in the U.S. Iceland Geothermal Conference 2013 - Geothermal Policies and Impacts in the U.S. Iceland Geothermal Conference presentation on March 7, 2013 by Chief Engineer Jay Nathwani of the U.S. Department of Energys Geothermal Technologies Office. iceland_geothermal_conf2013_nathwani.pdf (2.48 MB) More Documents & Publications Geothermal Technologies Program Overview Presentation at

  10. A Roadmap for Strategic Development of Geothermal Exploration Technologies

    SciTech Connect (OSTI)

    Phillips, Benjamin R.; Ziagos, John; Thorsteinsson, Hildigunnur; Hass, Eric

    2013-02-13

    Characterizing productive geothermal systems is challenging yet critical to identify and develop an estimated 30 gigawatts electric (GWe) of undiscovered hydrothermal resources in the western U.S. This paper, undertaken by the U.S. Department of Energy’s Geothermal Technologies Office (GTO), summarizes needs and technical pathways that target the key geothermal signatures of temperature, permeability, and fluid content, and develops the time evolution of these pathways, tying in past and current GTO exploration Research and Development (R&D) projects. Beginning on a five-year timescale and projecting out to 2030, the paper assesses technologies that could accelerate the confirmation of 30 GWe. The resulting structure forms the basis for a Geothermal Exploration Technologies Roadmap, a strategic development plan to help guide GTO R&D investments that will lower the risk and cost of geothermal prospect identification. This roadmap is currently open for public comment. Send your comments to geothermal@ee.doe.gov.

  11. Energy geothermal; San Emidio Geothermal Area; 3D Model geothermal...

    Office of Scientific and Technical Information (OSTI)

    description: Trainor-Guitton, Hoversten,Nordquist, Intani, Value of information analysis using geothermal field data: accounting for multiple interpretations & determining...

  12. Chemical Signatures of and Precursors to Fractures Using Fluid Inclusion

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

    Stratigraphy; 2010 Geothermal Technology Program Peer Review Report | Department of Energy Stratigraphy; 2010 Geothermal Technology Program Peer Review Report Chemical Signatures of and Precursors to Fractures Using Fluid Inclusion Stratigraphy; 2010 Geothermal Technology Program Peer Review Report DOE 2010 Geothermal Technologies Program Peer Review reservoir_035_dilley.pdf (217.42 KB) More Documents & Publications The Role of Geochemistry and Stress on Fracture Development and Proppant

  13. IN SITU STRESS, FRACTURE, AND FLUID FLOW ANALYSIS IN WELL 38C...

    Open Energy Info (EERE)

    FRACTURE, AND FLUID FLOW ANALYSIS IN WELL 38C-9:AN ENHANCED GEOTHERMAL SYSTEM IN THE COSO GEOTHERMAL FIELD Jump to: navigation, search OpenEI Reference LibraryAdd to library...

  14. Guidebook to Geothermal Finance

    SciTech Connect (OSTI)

    Salmon, J. P.; Meurice, J.; Wobus, N.; Stern, F.; Duaime, M.

    2011-03-01

    This guidebook is intended to facilitate further investment in conventional geothermal projects in the United States. It includes a brief primer on geothermal technology and the most relevant policies related to geothermal project development. The trends in geothermal project finance are the focus of this tool, relying heavily on interviews with leaders in the field of geothermal project finance. Using the information provided, developers and investors may innovate in new ways, developing partnerships that match investors' risk tolerance with the capital requirements of geothermal projects in this dynamic and evolving marketplace.

  15. Geothermal progress monitor: Report No. 17

    SciTech Connect (OSTI)

    1995-12-01

    DOE is particularly concerned with reducing the costs of geothermal power generation, especially with the abundant moderate to low-temperature resources in the US. This concern is reflected in DOE`s support of a number of energy conversion projects. Projects which focus on the costs and performance of binary cycle technology include a commercial demonstration of supersaturated turbine expansions, which earlier studies have indicated could increase the power produced per pound of fluid. Other binary cycle projects include evaluations of the performance of various working fluid mixtures and the development and testing of advanced heat rejection systems which are desperately needed in water-short geothermal areas. DOE is also investigating the applicability of flash steam technology to low-temperature resources, as an economic alternative to binary cycle systems. A low-cost, low-pressure steam turbine, selected for a grant, will be constructed to utilize fluid discharged from a flash steam plant in Nevada. Another project addresses the efficiency of high-temperature flash plants with a demonstration of the performance of the Biphase turbine which may increase the power output of such installations with no increase in fluid flow. Perhaps the most noteworthy feature of this issue of the GPM, the 17th since its inception in 1980, is the high degree of industry participation in federally-sponsored geothermal research and development. This report describes geothermal development activities.

  16. Baltazor Springs Geothermal Project | Open Energy Information

    Open Energy Info (EERE)

    Baltazor Springs Geothermal Project Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Development Project: Baltazor Springs Geothermal Project Project Location...

  17. Silver State Geothermal Project | Open Energy Information

    Open Energy Info (EERE)

    State Geothermal Project Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Development Project: Silver State Geothermal Project Project Location Information Coordinates...

  18. Panther Canyon Geothermal Project | Open Energy Information

    Open Energy Info (EERE)

    Canyon Geothermal Project Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Development Project: Panther Canyon Geothermal Project Project Location Information...

  19. Kelsey North Geothermal Project | Open Energy Information

    Open Energy Info (EERE)

    North Geothermal Project Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Development Project: Kelsey North Geothermal Project Project Location Information...

  20. Devil's Canyon Geothermal Project | Open Energy Information

    Open Energy Info (EERE)

    Canyon Geothermal Project Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Development Project: Devil's Canyon Geothermal Project Project Location Information...

  1. Dead Horse Geothermal Project | Open Energy Information

    Open Energy Info (EERE)

    Horse Geothermal Project Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Development Project: Dead Horse Geothermal Project Project Location Information...

  2. Delcer Butte Geothermal Project | Open Energy Information

    Open Energy Info (EERE)

    Butte Geothermal Project Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Development Project: Delcer Butte Geothermal Project Project Location Information...

  3. Drum Mountain Geothermal Project | Open Energy Information

    Open Energy Info (EERE)

    Mountain Geothermal Project Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Development Project: Drum Mountain Geothermal Project Project Location Information...

  4. Puna Geothermal Project | Open Energy Information

    Open Energy Info (EERE)

    Puna Geothermal Project Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Development Project: Puna Geothermal Project Project Location Information Coordinates...

  5. Puna Geothermal Project | Open Energy Information

    Open Energy Info (EERE)

    Puna Geothermal Venture) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Development Project: Puna Geothermal Project Project Location Information Coordinates...

  6. Reese River Geothermal Project | Open Energy Information

    Open Energy Info (EERE)

    River Geothermal Project Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Development Project: Reese River Geothermal Project Project Location Information...

  7. Pauzhetskaya Geothermal Power Plant | Open Energy Information

    Open Energy Info (EERE)

    Pauzhetskaya Geothermal Power Plant Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Pauzhetskaya Geothermal Power Plant General Information Name Pauzhetskaya...

  8. Rancia Geothermal Power Station | Open Energy Information

    Open Energy Info (EERE)

    Station General Information Name Rancia Geothermal Power Station Sector Geothermal energy Location Information Location Tuscany, Italy Geothermal Resource Area...

  9. Sesta Geothermal Power Station | Open Energy Information

    Open Energy Info (EERE)

    Station General Information Name Sesta Geothermal Power Station Sector Geothermal energy Location Information Location Tuscany, Italy Geothermal Resource Area Larderello...

  10. Farinello Geothermal Power Station | Open Energy Information

    Open Energy Info (EERE)

    Station General Information Name Farinello Geothermal Power Station Sector Geothermal energy Location Information Location Tuscany, Italy Geothermal Resource Area Larderello...

  11. Pianacce Geothermal Power Station | Open Energy Information

    Open Energy Info (EERE)

    Station General Information Name Pianacce Geothermal Power Station Sector Geothermal energy Location Information Location Tuscany, Italy Geothermal Resource Area...

  12. Ulumbu Geothermal Power Plant | Open Energy Information

    Open Energy Info (EERE)

    Information Name Ulumbu Geothermal Power Plant Facility Geothermal Power Plant Sector Geothermal energy Location Information Address Kupang Location Indonesia Coordinates...

  13. Orita 3 Geothermal Project | Open Energy Information

    Open Energy Info (EERE)

    3 Geothermal Project Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Development Project: Orita 3 Geothermal Project Project Location Information Coordinates...

  14. Near-surface groundwater responses to injection of geothermal wastes

    SciTech Connect (OSTI)

    Arnold, S.C.

    1984-06-01

    Experiences with injecting geothermal fluids have identified technical problems associated with geothermal waste disposal. This report assesses the feasibility of injection as an alternative for geothermal wastewater disposal and analyzes hydrologic controls governing the upward migration of injected fluids. Injection experiences at several geothermal developments are presented, including: Raft River, Salton Sea, East Mesa, Otake and Hatchobaru in Japan, and Ahuachapan in El Salvador. Hydrogeologic and design/operational factors affecting the success of an injection program are identified. Hydrogeologic factors include subsidence, near-surface effects of injected fluids, and seismicity. Design/operational factors include hydrodynamic breakthrough, condition of the injection system and reservoir maintenance. Existing and potential effects of production/injection on these factors are assessed.

  15. Geothermal Water Use: Life Cycle Water Consumption, Water Resource Assessment, and Water Policy Framework

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Schroeder, Jenna N.

    This report examines life cycle water consumption for various geothermal technologies to better understand factors that affect water consumption across the life cycle (e.g., power plant cooling, belowground fluid losses) and to assess the potential water challenges that future geothermal power generation projects may face. Previous reports in this series quantified the life cycle freshwater requirements of geothermal power-generating systems, explored operational and environmental concerns related to the geochemical composition of geothermal fluids, and assessed future water demand by geothermal power plants according to growth projections for the industry. This report seeks to extend those analyses by including EGS flash, both as part of the life cycle analysis and water resource assessment. A regional water resource assessment based upon the life cycle results is also presented. Finally, the legal framework of water with respect to geothermal resources in the states with active geothermal development is also analyzed.

  16. Geothermal Water Use: Life Cycle Water Consumption, Water Resource Assessment, and Water Policy Framework

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Schroeder, Jenna N.

    2014-06-10

    This report examines life cycle water consumption for various geothermal technologies to better understand factors that affect water consumption across the life cycle (e.g., power plant cooling, belowground fluid losses) and to assess the potential water challenges that future geothermal power generation projects may face. Previous reports in this series quantified the life cycle freshwater requirements of geothermal power-generating systems, explored operational and environmental concerns related to the geochemical composition of geothermal fluids, and assessed future water demand by geothermal power plants according to growth projections for the industry. This report seeks to extend those analyses by including EGS flash, both as part of the life cycle analysis and water resource assessment. A regional water resource assessment based upon the life cycle results is also presented. Finally, the legal framework of water with respect to geothermal resources in the states with active geothermal development is also analyzed.

  17. Heber II Geothermal Facility | Open Energy Information

    Open Energy Info (EERE)

    Heber II Geothermal Facility Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Heber II Geothermal Facility General Information Name Heber II Geothermal Facility...

  18. Steamboat IA Geothermal Facility | Open Energy Information

    Open Energy Info (EERE)

    IA Geothermal Facility Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Steamboat IA Geothermal Facility General Information Name Steamboat IA Geothermal Facility...

  19. Transition Zone Geothermal Region | Open Energy Information

    Open Energy Info (EERE)

    Unknown Planned Capacity 1 Geothermal Areas within the Transition Zone Geothermal Region Energy Generation Facilities within the Transition Zone Geothermal Region Geothermal Power...

  20. Lightning Dock Geothermal Area | Open Energy Information

    Open Energy Info (EERE)

    Review At Lightning Dock Geothermal Area (Rafferty, 1997) Geothermal Literature Review Fossil Fuel-fired Peak Heating for Geothermal Greenhouses Geothermal Literature Review At...

  1. Eburru Geothermal Power Plant | Open Energy Information

    Open Energy Info (EERE)

    Eburru Geothermal Power Plant Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Eburru Geothermal Power Plant General Information Name Eburru Geothermal Power Plant...

  2. Ndunga Geothermal Power Plant | Open Energy Information

    Open Energy Info (EERE)

    Ndunga Geothermal Power Plant Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Ndunga Geothermal Power Plant General Information Name Ndunga Geothermal Power Plant...

  3. Irem Geothermal Power Plant | Open Energy Information

    Open Energy Info (EERE)

    Irem Geothermal Power Plant Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Irem Geothermal Power Plant General Information Name Irem Geothermal Power Plant Facility...

  4. Tuzla Geothermal Power Plant | Open Energy Information

    Open Energy Info (EERE)

    Tuzla Geothermal Power Plant Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Tuzla Geothermal Power Plant General Information Name Tuzla Geothermal Power Plant...

  5. Sibayak Geothermal Power Plant | Open Energy Information

    Open Energy Info (EERE)

    Sibayak Geothermal Power Plant Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Sibayak Geothermal Power Plant General Information Name Sibayak Geothermal Power Plant...

  6. Lahendong Geothermal Area | Open Energy Information

    Open Energy Info (EERE)

    World Geothermal Power Generation 2001-2005. Proceedings of World Geothermal Congress; Turkey: World Geothermal Congress. List of existing Geothermal Resource Areas. Print PDF...

  7. Mindanao Geothermal Area | Open Energy Information

    Open Energy Info (EERE)

    World Geothermal Power Generation 2001-2005. Proceedings of World Geothermal Congress; Turkey: World Geothermal Congress. List of existing Geothermal Resource Areas. Print PDF...

  8. Mount Amiata Geothermal Area | Open Energy Information

    Open Energy Info (EERE)

    World Geothermal Power Generation 2001-2005. Proceedings of World Geothermal Congress; Turkey: World Geothermal Congress. List of existing Geothermal Resource Areas. Print PDF...

  9. Amatitlan Geothermal Area | Open Energy Information

    Open Energy Info (EERE)

    World Geothermal Power Generation 2001-2005. Proceedings of World Geothermal Congress; Turkey: World Geothermal Congress. List of existing Geothermal Resource Areas. Print PDF...

  10. Mori Geothermal Area | Open Energy Information

    Open Energy Info (EERE)

    World Geothermal Power Generation 2001-2005. Proceedings of World Geothermal Congress; Turkey: World Geothermal Congress. List of existing Geothermal Resource Areas. Print PDF...

  11. Fukushima Geothermal Area | Open Energy Information

    Open Energy Info (EERE)

    World Geothermal Power Generation 2001-2005. Proceedings of World Geothermal Congress; Turkey: World Geothermal Congress. List of existing Geothermal Resource Areas. Print PDF...

  12. Rotokawa Geothermal Area | Open Energy Information

    Open Energy Info (EERE)

    World Geothermal Power Generation 2001-2005. Proceedings of World Geothermal Congress; Turkey: World Geothermal Congress. List of existing Geothermal Resource Areas. Print PDF...

  13. Pauzhetskaya Geothermal Area | Open Energy Information

    Open Energy Info (EERE)

    World Geothermal Power Generation 2001-2005. Proceedings of World Geothermal Congress; Turkey: World Geothermal Congress. List of existing Geothermal Resource Areas. Print PDF...

  14. Miyagi Geothermal Area | Open Energy Information

    Open Energy Info (EERE)

    World Geothermal Power Generation 2001-2005. Proceedings of World Geothermal Congress; Turkey: World Geothermal Congress. List of existing Geothermal Resource Areas. Print PDF...

  15. Kagoshima Geothermal Area | Open Energy Information

    Open Energy Info (EERE)

    World Geothermal Power Generation 2001-2005. Proceedings of World Geothermal Congress; Turkey: World Geothermal Congress. List of existing Geothermal Resource Areas. Print PDF...

  16. San Jacinto Geothermal Area | Open Energy Information

    Open Energy Info (EERE)

    World Geothermal Power Generation 2001-2005. Proceedings of World Geothermal Congress; Turkey: World Geothermal Congress. Benjamin Matek. Geo-energy Internet. Geothermal...

  17. Tiwi / Albay Geothermal Area | Open Energy Information

    Open Energy Info (EERE)

    World Geothermal Power Generation 2001-2005. Proceedings of World Geothermal Congress; Turkey: World Geothermal Congress. List of existing Geothermal Resource Areas. Print PDF...

  18. Ogiri Geothermal Area | Open Energy Information

    Open Energy Info (EERE)

    World Geothermal Power Generation 2001-2005. Proceedings of World Geothermal Congress; Turkey: World Geothermal Congress. List of existing Geothermal Resource Areas. Print PDF...

  19. North Negros Geothermal Area | Open Energy Information

    Open Energy Info (EERE)

    World Geothermal Power Generation 2001-2005. Proceedings of World Geothermal Congress; Turkey: World Geothermal Congress. Benjamin Matek. Geo-energy Internet. Geothermal...

  20. Ngawha Geothermal Area | Open Energy Information

    Open Energy Info (EERE)

    World Geothermal Power Generation 2001-2005. Proceedings of World Geothermal Congress; Turkey: World Geothermal Congress. List of existing Geothermal Resource Areas. Print PDF...

  1. Bouillante Geothermal Area | Open Energy Information

    Open Energy Info (EERE)

    World Geothermal Power Generation 2001-2005. Proceedings of World Geothermal Congress; Turkey: World Geothermal Congress. List of existing Geothermal Resource Areas. Print PDF...

  2. Leyte Geothermal Area | Open Energy Information

    Open Energy Info (EERE)

    World Geothermal Power Generation 2001-2005. Proceedings of World Geothermal Congress; Turkey: World Geothermal Congress. List of existing Geothermal Resource Areas. Print PDF...

  3. Svartsengi Geothermal Area | Open Energy Information

    Open Energy Info (EERE)

    World Geothermal Power Generation 2001-2005. Proceedings of World Geothermal Congress; Turkey: World Geothermal Congress. List of existing Geothermal Resource Areas. Print PDF...

  4. South Negros Geothermal Area | Open Energy Information

    Open Energy Info (EERE)

    World Geothermal Power Generation 2001-2005. Proceedings of World Geothermal Congress; Turkey: World Geothermal Congress. List of existing Geothermal Resource Areas. Print PDF...

  5. Property:GeothermalArea | Open Energy Information

    Open Energy Info (EERE)

    Area + Babadere Geothermal Project + Tuzla Geothermal Area + Bacman 1 GEPP + Bac-Man Laguna Geothermal Area + Bacman 2 GEPP + Bac-Man Laguna Geothermal Area + Bacman...

  6. Takigami Geothermal Power Plant | Open Energy Information

    Open Energy Info (EERE)

    Hide Map Geothermal Resource Area Oita Geothermal Area Geothermal Region Ryuku Arc Plant Information Facility Type Single Flash Owner Idemitsu Oita Geothermal CoKyushu...

  7. Category:Geothermal Regions | Open Energy Information

    Open Energy Info (EERE)

    Geothermal Regions Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Geothermalpower.jpg Looking for the Geothermal Regions page? For detailed information on Geothermal...

  8. Blind Geothermal System | Open Energy Information

    Open Energy Info (EERE)

    Blind Geothermal System Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Print PDF Blind Geothermal System Dictionary.png Blind Geothermal System: An area with a...

  9. Cove Fort Geothermal Area | Open Energy Information

    Open Energy Info (EERE)

    Cove Fort Geothermal Area (Redirected from Cove Fort Geothermal Area - Vapor) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Cove Fort Geothermal Area Contents 1 Area...

  10. Alaska Geothermal Region | Open Energy Information

    Open Energy Info (EERE)

    Springs Geothermal Area Sitka Hot Spring Geothermal Area South Geothermal Area Tolovana Geothermal Area ... further results Energy Generation Facilities within the Alaska...

  11. Italy Geothermal Region | Open Energy Information

    Open Energy Info (EERE)

    Region Larderello Geothermal Area Mount Amiata Geothermal Area Travale-Radicondoli Geothermal Area Energy Generation Facilities within the Italy Geothermal Region Bagnore 3...

  12. Hawaii Geothermal Region | Open Energy Information

    Open Energy Info (EERE)

    Area Mokapu Penninsula Geothermal Area Molokai Geothermal Area Olowalu-Ukumehame Canyon Geothermal Area Energy Generation Facilities within the Hawaii Geothermal Region Puna...

  13. Microseismic Study with LBNL - Monitoring the Effect of Injection of Fluids

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

    from the Lake County Pipeline on Seismicity at The Geysers, California, Geothermal Field; 2010 Geothermal Technology Program Peer Review Report | Department of Energy Microseismic Study with LBNL - Monitoring the Effect of Injection of Fluids from the Lake County Pipeline on Seismicity at The Geysers, California, Geothermal Field; 2010 Geothermal Technology Program Peer Review Report Microseismic Study with LBNL - Monitoring the Effect of Injection of Fluids from the Lake County Pipeline on

  14. Stanford Geothermal Workshop

    Broader source: Energy.gov [DOE]

    Now in its 40th year, the Stanford Geothermal Workshop is one of the world's longest running technical meetings on geothermal energy. The conference brings together engineers, scientists and...

  15. Geothermal Technologies Newsletter Archives

    Broader source: Energy.gov [DOE]

    Here you'll find past issues of the U.S. Department of Energy's (DOE) Geothermal Technologies program newsletter, which features information about its geothermal research and development efforts....

  16. Geothermal Data Repository

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

    U.S. Department of Energy the GDR logo, a blue wave opposed over an orange flame Geothermal Data Repository The Geothermal Data Repository (GDR) is the submission point for all...

  17. 1992--1993 low-temperature geothermal assessment program, Colorada

    SciTech Connect (OSTI)

    Cappa, J.A.; Hemborg, H.T.

    1995-01-01

    Previous assessments of Colorado`s low-temperature geothermal resources were completed by the Colorado Geological Survey in 1920 and in the mid- to late-1970s. The purpose of the 1992--1993 low-temperature geothermal resource assessment is to update the earlier physical, geochemical, and utilization data and compile computerized databases of the location, chemistry, and general information of the low-temperature geothermal resources in Colorado. The main sources of the data included published data from the Colorado Geological Survey, the US Geological Survey WATSTOR database, and the files of the State Division of Water Resources. The staff of the Colorado Geological Survey in 1992 and 1993 visited most of the known geothermal sources that were recorded as having temperatures greater than 30{degrees}C. Physical measurements of the conductivity, pH, temperature, flow rate, and notes on the current geothermal source utilization were taken. Ten new geochemical analyses were completed on selected geothermal sites. The results of the compilation and field investigations are compiled into the four enclosed Quattro Pro 4 databases. For the purposes of this report a geothermal area is defined as a broad area, usually less than 3 sq mi in size, that may have several wells or springs. A geothermal site is an individual well or spring within a geothermal area. The 1992-1993 assessment reports that there are 93 geothermal areas in the Colorado, up from the 56 reported in 1978; there are 157 geothermal sites up from the 125 reported in 1978; and a total of 382 geochemical analyses are compiled, up from the 236 reported in 1978. Six geothermal areas are recommended for further investigation: Trimble Hot Springs, Orvis Hot Springs, an area southeast of Pagosa Springs, the eastern San Luis Valley, Rico and Dunton area, and Cottonwood Hot Springs.

  18. National Geothermal Student Competition; 2010 Geothermal Technology Program

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

    Peer Review Report | Department of Energy Competition; 2010 Geothermal Technology Program Peer Review Report National Geothermal Student Competition; 2010 Geothermal Technology Program Peer Review Report DOE 2010 Geothermal Technologies Program Peer Review adse_002_visser.pdf (242 KB) More Documents & Publications Geothermal Power Generation Plant; 2010 Geothermal Technology Program Peer Review Report Concept Testing and Development at the Raft River Geothermal Field, Idaho Feasibility

  19. Geothermal Industry Partnership Opportunities

    Broader source: Energy.gov [DOE]

    Here you'll find links to information about partnership opportunities and programs for the geothermal industry.

  20. NREL: Geothermal Technologies - Publications

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

    Publications NREL's geothermal team develops publications, including technical reports and conference papers, about geothermal resource assessments, market and policy analysis, and geothermal research and development (R&D) activities. In addition to the selected documents available below, you can find resources on the U.S. Department of Energy (DOE) Geothermal Technologies Office website or search the NREL Publications Database. Learn more about how research at NREL is accelerating

  1. Geothermal Government Programs

    Office of Energy Efficiency and Renewable Energy (EERE)

    Here you'll find links to federal, state, and local government programs promoting geothermal energy development.

  2. Geothermal Photo Gallery

    Broader source: Energy.gov [DOE]

    The Geothermal Technologies Office invests in 150 projects nationwide, leveraging more than $500 million in combined investments.

  3. Geothermal Maps | Department of Energy

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

    Maps Geothermal Maps The Geothermal Technologies Office (GTO) carries out R&D and demonstration efforts to deploy 12 GWe of clean geothermal energy by 2020 and expand geothermal into new U.S. regions. Locating and developing resources is an important part of that mission. GTO works with national laboratories to develop maps and data that identify renewable, geothermal resources, possible locations for implementation of various geothermal technologies, and actual and potential geothermal

  4. Structural investigations of Great Basin geothermal fields: Applications and implications

    SciTech Connect (OSTI)

    Faulds, James E; Hinz, Nicholas H.; Coolbaugh, Mark F

    2010-11-01

    Because fractures and faults are commonly the primary pathway for deeply circulating hydrothermal fluids, structural studies are critical to assessing geothermal systems and selecting drilling targets for geothermal wells. Important tools for structural analysis include detailed geologic mapping, kinematic analysis of faults, and estimations of stress orientations. Structural assessments are especially useful for evaluating geothermal fields in the Great Basin of the western USA, where regional extension and transtension combine with high heat flow to generate abundant geothermal activity in regions having little recent volcanic activity. The northwestern Great Basin is one of the most geothermally active areas in the USA. The prolific geothermal activity is probably due to enhanced dilation on N- to NNE-striking normal faults induced by a transfer of NW-directed dextral shear from the Walker Lane to NW-directed extension. Analysis of several geothermal fields suggests that most systems occupy discrete steps in normal fault zones or lie in belts of intersecting, overlapping, and/or terminating faults. Most fields are associated with steeply dipping faults and, in many cases, with Quaternary faults. The structural settings favoring geothermal activity are characterized by subvertical conduits of highly fractured rock along fault zones oriented approximately perpendicular to the WNW-trending least principal stress. Features indicative of these settings that may be helpful in guiding exploration for geothermal resources include major steps in normal faults, interbasinal highs, groups of relatively low discontinuous ridges, and lateral jogs or terminations of mountain ranges.

  5. EA-1893: Canby Cascaded Geothermal Development System, Canby, California

    Broader source: Energy.gov [DOE]

    This EA will evaluate the environmental impacts of a proposal by Modoc Contracting Company to use DOE grant funds to fulfill its plan to expand its reliance on geothermal resources by producing more hot water and using it to produce power as well as thermal energy. The goal of the project is to complete a cascaded geothermal system that generates green power for the local community, provides thermal energy to support greenhouse and aquaculture operation, provide sustainable thermal energy for residential units, and eliminate the existing geothermal discharge to a local river. NOTE: This EA has been cancelled.

  6. Environmental assessment for a geothermal direct utilization project in Reno, Nevada

    SciTech Connect (OSTI)

    Perino, J.V.; McCloskey, M.H.; Wolterink, T.J.; Wallace, R.C.; Baker, D.W.; Harper, D.L.; Anderson, D.T.; Siteman, J.V.; Sherrill, K.T.

    1980-08-20

    The proposed action involves the development of geothermal wells to provide hot water and heat for five users in Reno, Nevada. Data from nearby wells indicate the sufficient hot water is available from the Moana Known Geothermal Resource Area for this action. Construction activities have been planned to minimize or eliminate problems with noise, runoff, and disturbance of biota as well as other potential environmental effects. Disposal of the geothermal fluids via surface water or injection will be determined based on water quality of the geothermal fluids and geologic effects of injection. The affected environment is described by this document and needed mitigation procedures discussed.

  7. Hawaiian direct-heat grants encourage geothermal creativity

    SciTech Connect (OSTI)

    Beck, A.G. )

    1988-12-01

    The Hawaiian Community Geothermal Technology Program is unique. Under its auspices, heat and other by-products of Hawaii's high-temperature HGP-A geothermal well and power plant are not wasted. Instead, they form the backbone of a direct-heat grant program that reaches into the local community and encourages community members to develop creative uses for geothermal energy. A by-product of this approach is a broadened local base of support for geothermal energy development. With the experimental and precommercial work completed, most of the original grantees are looking for ways to continue their projects on a commercial scale by studying the economics of using geothermal heat in a full-scale business and researching potential markets. A geothermal mini-park may be built near the research center. In 1988, a second round of projects was funded under the program. The five new projects are: Geothermal Aquaculture Project - an experiment with low-cost propagation of catfish species in geothermally heated tanks with a biofilter; Media Steam Sterilization and Drying - an application of raw geothermal steam to shredded, locally-available materials such as coconut husks, which would be used as certified nursery growing media; Bottom-Heating System Using Geothermal Power for Propagation - a continuation of Leilani Foliage's project from the first round of grants, focusing on new species of ornamental palms; Silica Bronze - the use of geothermal silica as a refractory material in casting bronze artwork; and Electro-deposition of Minerals in Geothermal Brine - the nature and possible utility of minerals deposited from the hot fluid.

  8. Three-Dimensional Geothermal Fairway Mapping: Examples From the Western Great Basin, USA

    SciTech Connect (OSTI)

    Siler, Drew L; Faulds, James E

    2013-09-29

    Elevated permeability along fault systems provides pathways for circulation of geothermal fluids. Accurate location of such fluid flow pathways in the subsurface is crucial to future geothermal development in order to both accurately assess resource potential and mitigate drilling costs by increasing drilling success rates. Employing a variety of surface and subsurface data sets, we present detailed 3D geologic analyses of two Great Basin geothermal systems, the actively producing Brady’s geothermal system and a ‘greenfield’ geothermal prospect at Astor Pass, Nevada. 3D modeling provides the framework for quantitative structural analyses. We combine 3D slip and dilation tendency analysis along fault zones and calculations of fault intersection density in the two geothermal systems with the locations of lithologies capable of supporting dense, interconnected fracture networks. The collocation of these permeability promoting characteristics with elevated heat represent geothermal ‘fairways’, areas with ideal conditions for geothermal fluid flow. Location of geothermal fairways at high resolution in 3D space can help to mitigate the costs of geothermal exploration by providing discrete drilling targets and data-based evaluations of reservoir potential.

  9. Seventeenth workshop on geothermal reservoir engineering: Proceedings

    SciTech Connect (OSTI)

    Ramey, H.J. Jr.; Kruger, P.; Miller, F.G.; Horne, R.N.; Brigham, W.E.; Cook, J.W.

    1992-01-31

    PREFACE The Seventeenth Workshop on Geothermal Reservoir Engineering was held at Stanford University on January 29-31, 1992. There were one hundred sixteen registered participants which equaled the attendance last year. Participants were from seven foreign countries: Italy, Japan, United Kingdom, France, Belgium, Mexico and New Zealand. Performance of many geothermal fields outside the United States was described in the papers. The Workshop Banquet Speaker was Dr. Raffaele Cataldi. Dr. Cataldi gave a talk on the highlights of his geothermal career. The Stanford Geothermal Program Reservoir Engineering Award for Excellence in Development of Geothermal Energy was awarded to Dr. Cataldi. Dr. Frank Miller presented the award at the banquet. Thirty-eight papers were presented at the Workshop with two papers submitted for publication only. Dr. Roland Horne opened the meeting and the key note speaker was J.E. ''Ted'' Mock who discussed the DOE Geothermal R. & D. Program. The talk focused on aiding long-term, cost effective private resource development. Technical papers were organized in twelve sessions concerning: geochemistry, hot dry rock, injection, geysers, modeling, and reservoir mechanics. Session chairmen were major contributors to the program and we thank: Sabodh Garg., Jim Lovekin, Jim Combs, Ben Barker, Marcel Lippmann, Glenn Horton, Steve Enedy, and John Counsil. The Workshop was organized by the Stanford Geothermal Program faculty, staff, and graduate students. We wish to thank Pat Ota, Ted Sumida, and Terri A. Ramey who also produces the Proceedings Volumes for publication. We owe a great deal of thanks to our students who operate audiovisual equipment and to Francois Groff who coordinated the meeting arrangements for the Workshop. Henry J. Ramey, Jr. Roland N. Horne Frank G. Miller Paul Kruger William E. Brigham Jean W. Cook -vii

  10. National Geothermal Data System (NGDS) Fact Sheet

    Office of Energy Efficiency and Renewable Energy (EERE)

    Overview of the National Geothermal Data System (NGDS), a platform for sharing geothermal technical data.

  11. Geothermal Loop Experimental Facility. Final report

    SciTech Connect (OSTI)

    Not Available

    1980-04-01

    Research at the Geothermal Loop Experimental Facility was successfully concluded in September 1979. In 13,000 hours of operation over a three and one half year period, the nominal 10 megawatt electrical equivalent GLEF provided the opportunity to identify problems in working with highly saline geothermal fluids and to develop solutions that could be applied to a commercial geothermal power plant producing electricity. A seven and one half year period beginning in April 1972, with early well flow testing and ending in September 1979, with the completion of extensive facility and reservoir operations is covered. During this period, the facility was designed, constructed and operated in several configurations. A comprehensive reference document, addressing or referencing documentation of all the key areas investigated is presented.

  12. Nevada Geothermal Area | Department of Energy

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

    Nevada Geothermal Area Nevada Geothermal Area The extensive Steamboat Springs geothermal area contains three geothermal power-generating plants. The plants provide approximately 30% of the total Nevada geothermal power output. Photo of Nevada power plant

  13. Reference book on geothermal direct use

    SciTech Connect (OSTI)

    Lienau, P.J.; Lund, J.W.; Rafferty, K.; Culver, G.

    1994-08-01

    This report presents the direct uses of geothermal energy in the United States. Topics discussed include: low-temperature geothermal energy resources; energy reserves; geothermal heat pumps; geothermal energy for residential buildings; and geothermal energy for industrial usage.

  14. Geothermometry At Coso Geothermal Area (1980) | Open Energy Informatio...

    Open Energy Info (EERE)

    DOE-funding Unknown Exploration Basis Fluid temperature of feed water Notes Cation and sulfate isotope geothermometers indicate that the reservoir feeding water to the Coso Hot...

  15. Life-cycle Analysis of Geothermal Technologies; 2010 Geothermal Technology

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

    Program Peer Review Report | Department of Energy cycle Analysis of Geothermal Technologies; 2010 Geothermal Technology Program Peer Review Report Life-cycle Analysis of Geothermal Technologies; 2010 Geothermal Technology Program Peer Review Report DOE 2010 Geothermal Technologies Program Peer Review adse_005_wang.pdf (192.84 KB) More Documents & Publications Detecting Fractures Using Technology at High Temperatures and Depths - Geothermal Ultrasonic Fracture Imager (GUFI); 2010

  16. track 4: enhanced geothermal systems (EGS) | geothermal 2015 peer review |

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

    Department of Energy 4: enhanced geothermal systems (EGS) | geothermal 2015 peer review track 4: enhanced geothermal systems (EGS) | geothermal 2015 peer review The Energy Department pursues research in transformative science and engineering that the private sector is not financially or technically equipped to undertake. At the 2015 Peer Review, awardees in the Geothermal Technologies Office portfolio presented fifty three technical project presentations on enhanced geothermal systems

  17. Seismic Fracture Characterization Methods for Enhanced Geothermal Systems |

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

    Department of Energy Systems Seismic Fracture Characterization Methods for Enhanced Geothermal Systems Project objective: Make Seismic Work in Geothermal Areas; Characterize Fractures/Faults. seismic_queen_seismic_fracture.pdf (1.38 MB) More Documents & Publications Imaging, Characterizing, and Modeling of Fracture Networks and Fluid Flow in EGS Reservoirs; II: Full-Waveform Inversion of 3D-9C VSP data from Bradys EGS Site and Update of the Brady Reservoir Scale Model Imaging,

  18. Use of Downhole Motors in Geothermal Drilling in the Philippines

    SciTech Connect (OSTI)

    Pyle, D. E.

    1981-01-01

    This paper describes the use of downhole motors in the Tiwi geothermal field in the Philippines, The discussion includes the application Of a Dyna-Drill with insert-type bits for drilling through surface alluvium. The economics of this type of drilling are compared to those of conventional rotary drilling. The paper also describes the use of a turbodrill that drills out scale as the well produces geothermal fluids.

  19. Power Plays: Geothermal Energy In Oil and Gas Fields

    Office of Energy Efficiency and Renewable Energy (EERE)

    The SMU Geothermal Lab is hosting their 7th international energy conference and workshop Power Plays: Geothermal Energy in Oil and Gas Fields May 18-20, 2015 on the SMU Campus in Dallas, Texas. The two-day conference brings together leaders from the geothermal, oil and gas communities along with experts in finance, law, technology, and government agencies to discuss generating electricity from oil and gas well fluids, using the flare gas for waste heat applications, and desalinization of the water for project development in Europe, China, Indonesia, Mexico, Peru and the US. Other relevant topics include seismicity, thermal maturation, and improved drilling operations.

  20. Next generation geothermal power plants. Draft final report

    SciTech Connect (OSTI)

    Brugman, John; Hattar, John; Nichols, Kenneth; Esaki, Yuri

    1994-12-01

    The goal of this project is to develop concepts for the next generation geothermal power plant(s) (NGGPP). This plant, compared to existing plants, will generate power for a lower levelized cost and will be more competitive with fossil fuel fired power plants. The NGGPP will utilize geothermal resources efficiently and will be equipped with contingencies to mitigate the risk of reservoir performance. The NGGPP design will attempt to minimize emission of pollutants and consumption of surface water and/or geothermal fluids for cooling service.

  1. Role of Fluid Pressure in the Production Behavior of EnhancedGeotherma...

    Office of Scientific and Technical Information (OSTI)

    Country of Publication: United States Language: English Subject: 54; GEOTHERMAL SYSTEMS; HEAT EXTRACTION; HEAT TRANSFER; PRODUCTION; SIMULATION; WATER; WORKING FLUIDS Word Cloud ...

  2. GEA International Geothermal Energy Showcase

    Broader source: Energy.gov [DOE]

    What are the building blocks for successful geothermal projects? Find out March 17, 2016 at the Geothermal Energy Association's 2016 U.S. and International Geothermal Energy Showcase at the Ronald...

  3. Geothermal Outreach and Project Financing

    SciTech Connect (OSTI)

    Elizabeth Battocletti

    2006-04-06

    The ?Geothermal Outreach and Project Financing? project substantially added to the understanding of geothermal resources, technology, and small business development by both the general public as well as those in the geothermal community.

  4. National Geothermal Data System - DOE Geothermal Data Repository...

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

    National Geothermal Data System (NGDS) and DOE's node on the NGDS. ngdsgdrgeneralpresentation.pdf More Documents & Publications How to Utilize the National Geothermal Data...

  5. Geothermal Progress Monitor. Report No. 18

    SciTech Connect (OSTI)

    1996-12-31

    The near-term challenges of the US geothermal industry and its long-range potential are dominant themes in this issue of the US Department of Energy (DOE) Geothermal Progress Monitor which summarizes calendar-year 1996 events in geothermal development. Competition is seen as an antidote to current problems and a cornerstone of the future. Thus, industry's cost-cutting strategies needed to increase the competitiveness of geothermal energy in world markets are examined. For example, a major challenge facing the US industry today is that the sales contracts of independent producers have reached, or soon will, the critical stage when the prices utilities must pay them drop precipitously, aptly called the cliff. However, Thomas R. Mason, President and CEO of CalEnergy told the DOE 1996 Geothermal Program Review XIV audience that while some of his company's plants have ''gone over the cliff, the world is not coming to an end.'' With the imposition of severe cost-cutting strategies, he said, ''these plants remain profitable... although they have to be run with fewer people and less availability.'' The Technology Development section of the newsletter discusses enhancements to TOUGH2, the general purpose fluid and heat flow simulator and the analysis of drill cores from The Geysers, but the emphasis is on advanced drilling technologies.

  6. Retrospective examination of geothermal environmental assessments

    SciTech Connect (OSTI)

    Webb, J.W.; Eddlemon, G.K.; Reed, A.W.

    1984-03-01

    Since 1976, the Department of Energy (DOE) has supported a variety of programs and projects dealing with the exploration, development, and utilization of geothermal energy. This report presents an overview of the environmental impacts associated with these efforts. Impacts that were predicted in the environmental analyses prepared for the programs and projects are reviewed and summarized, along with measures that were recommended to mitigate these impacts. Also, for those projects that have gone forward, actual impacts and implemented mitigation measures are reported, based on telephone interviews with DOE and project personnel. An accident involving spills of geothermal fluids was the major environmental concern associated with geothermal development. Other important considerations included noise from drilling and production, emissions of H/sub 2/S and cooling tower drift, disposal of solid waste (e.g., from H/sub 2/S control), and the cumulative effects of geothermal development on land use and ecosystems. Mitigation measures were frequently recommended and implemented in conjunction with noise reduction; drift elimination; reduction of fugitive dust, erosion, and sedimentation; blowout prevention; and retention of wastes and spills. Monitoring to resolve uncertainties was often implemented to detect induced seismicity and subsidence, noise, drift deposition, concentrations of air and water pollutants, and effects on groundwater. The document contains an appendix, based on these findings, which outlines major environmental concerns, mitigation measures, and monitoring requirements associated with geothermal energy. Sources of information on various potential impacts are also listed.

  7. Northern Basin and Range Geothermal Region | Open Energy Information

    Open Energy Info (EERE)

    Hot Springs Geothermal Area Raft River Geothermal Area Railroad Valley Geothermal Area Red River Hot Springs Geothermal Area Roosevelt Hot Springs Geothermal Area Sharkey Hot...

  8. Valle Secolo Geothermal Power Station | Open Energy Information

    Open Energy Info (EERE)

    Station General Information Name Valle Secolo Geothermal Power Station Sector Geothermal energy Location Information Geothermal Resource Area Larderello Geothermal Area Geothermal...

  9. Bouillante 2 Geothermal Power Plant | Open Energy Information

    Open Energy Info (EERE)

    Plant General Information Name Bouillante 2 Geothermal Power Plant Sector Geothermal energy Location Information Geothermal Resource Area Bouillante Geothermal Area Geothermal...

  10. Bouillante 1 Geothermal Power Plant | Open Energy Information

    Open Energy Info (EERE)

    Plant General Information Name Bouillante 1 Geothermal Power Plant Sector Geothermal energy Location Information Geothermal Resource Area Bouillante Geothermal Area Geothermal...

  11. Geothermal Technologies Program: Enhanced Geothermal Systems

    SciTech Connect (OSTI)

    Not Available

    2004-08-01

    This general publication describes enhanced geothermal systems (EGS) and the principles of operation. It also describes the DOE program R&D efforts in this area, and summarizes several projects using EGS technology.

  12. Recent Developments in Geothermal Drilling Fluids (Conference...

    Office of Scientific and Technical Information (OSTI)

    A high-temperature mud consisting primarily of sepiolite, bentonite, and brown coal has ... Country of Publication: United States Language: English Subject: 01 COAL, LIGNITE, AND ...

  13. Geothermal Energy Program Summary Document, FY 1982

    SciTech Connect (OSTI)

    1981-01-01

    Geothermal energy is derived from the internal heat of the earth. Much of it is recoverable with current or near current technology. Geothermal energy can be used for electric power production, residential and commercial space heating and cooling, industrial process heat, and agricultural applications. Three principal types of geothermal resources are exploitable through the year 2000. In order of technology readiness, these resources are: hydrothermal; geopressured (including dissolved natural gas); and hot dry rock. In hydrothermal systems, natural water circulation moves heat from deep internal sources toward the earth's surface. Geothermal fluids (water and steam) tapped by drilling can be used to generate electricity or provide direct heat. Geopressured resources, located primarily in sedimentary basins along the Gulf Coast of Texas and of Louisiana, consist of water and dissolved methane at high pressure and at moderately high temperature. In addition to recoverable methane, geopressured resources provide thermal energy and mechanical energy derived from high fluid pressures, although methane offers the greatest immediate value. Commercial development of geopressured energy may begin in the mid-1980s. Economic feasibility depends on the amount of methane that a given well can produce, a highly uncertain factor at present.

  14. Colorado Potential Geothermal Pathways

    SciTech Connect (OSTI)

    Zehner, Richard E.

    2012-02-01

    Citation Information: Originator: Earth Science &Observation Center (ESOC), CIRES, University of Colorado at Boulder Publication Date: 2012 Title: Colorado PRS Cool Fairways Edition: First Publication Information: Publication Place: Earth Science & Observation Center, Cooperative Institute for Research in Environmental Science (CIRES), University of Colorado, Boulder Publisher: Earth Science &Observation Center (ESOC), CIRES, University of Colorado at Boulder Description: This layer contains the weakened basement rocks. Isostatic gravity was utilized to identify structural basin areas, characterized by gravity low values reflecting weakened basement rocks. Together interpreted regional fault zones and basin outlines define geothermal "exploration fairways", where the potential exists for deep, superheated fluid flow in the absence of Pliocene or younger volcanic units Spatial Domain: Extent: Top: 4544698.569273 m Left: 144918.141004 m Right: 763728.391299 m Bottom: 4094070.397932 m Contact Information: Contact Organization: Earth Science &Observation Center (ESOC), CIRES, University of Colorado at Boulder Contact Person: Khalid Hussein Address: CIRES, Ekeley Building Earth Science & Observation Center (ESOC) 216 UCB City: Boulder State: CO Postal Code: 80309-0216 Country: USA Contact Telephone: 303-492-6782 Spatial Reference Information: Coordinate System: Universal Transverse Mercator (UTM) WGS’1984 Zone 13N False Easting: 500000.00000000 False Northing: 0.00000000 Central Meridian: -105.00000000 Scale Factor: 0.99960000 Latitude of Origin: 0.00000000 Linear Unit: Meter Datum: World Geodetic System ’1984 (WGS ’1984) Prime Meridian: Greenwich Angular Unit: Degree Digital Form: Format Name: Shape file

  15. Federal Interagency Geothermal Activities 2011

    Broader source: Energy.gov [DOE]

    This document is the federal interagency geothermal activities document for 2011, which includes incoporation of public comments from the Draft National Geothermal Action Plan.

  16. Geothermal Technologies - Energy Innovation Portal

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

    Geothermal Marketing Summaries (11) Hydrogen and Fuel Cell Hydropower, Wave and Tidal Industrial ... Drilling costs amount to over half of the total cost of geothermal energy ...

  17. Newberry Geothermal | Open Energy Information

    Open Energy Info (EERE)

    named Northwest Geothermal Company) started to develop a 120MW geothermal project on its leases in 2006. As of 62012, Davenport Newberry is still in the exploration phase...

  18. Geothermal Heat Pump Manufacturing Activities

    Annual Energy Outlook [U.S. Energy Information Administration (EIA)]

    8 Geothermal heat pump shipments by origin, 2008 and 2009 (rated capacity in tons) Origin ... Administration (EIA), Form EIA-902, "Annual Geothermal Heat Pump Manufacturers Survey

  19. Geothermal Heat Pump Manufacturing Activities

    Annual Energy Outlook [U.S. Energy Information Administration (EIA)]

    0 Geothermal heat pump domestic shipments by customer type, 2008 and 2009 (rated capacity ... Administration (EIA), Form EIA-902, "Annual Geothermal Heat Pump Manufacturers Survey

  20. Geothermal Heat Pump Manufacturing Activities

    Gasoline and Diesel Fuel Update (EIA)

    1 Geothermal heat pump domestic shipments by sector and model type, 2009 (rated capacity ... Administration (EIA), Form EIA-902, "Annual Geothermal Heat Pump Manufacturers Survey