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• 11. [Image] Reservoir simulation studies: Wairakei Geothermal Field, New Zealand. Final report

  	Numerical reservoir simulation techniques were used to perform a history-match of the Wairakei geothermal system in New Zealand. First, a one-dimensional (vertical) model was chosen; realistic stratigraphy ...
  	Citation × Citation Citation Abstract Copy Title: Reservoir simulation studies: Wairakei Geothermal Field, New Zealand. Final report Author: Pritchett, J.W Year: 1980 Numerical reservoir simulation techniques were used to perform a history-match of the Wairakei geothermal system in New Zealand. First, a one-dimensional (vertical) model was chosen; realistic stratigraphy was incorporated and the known production history was imposed. The effects of surface and deep recharge were included. Good matches were obtained, both for the reservoir pressure decline history and changes in average discharge enthalpy with time. Next, multidimensional effects were incorporated by treating with a two-dimensional vertical section. Again, good history matches were obtained, although computed late-time discharge enthalpies were slightly high. It is believed that this disparity arises from inherently three-dimensional effects. Predictive calculations using the two-dimensional model suggest that continued future production will cause little additional reservoir pressure drop, but that thermal degradation will occur. Finally, ground subsidence data at Wairakei was examined. It was concluded that traditional elastic pore-collapse models based on classical soil-mechanics concepts are inadequate to explain the observed surface deformation. It is speculated that the measured subsidence may be due to structural effects such as aseismic slippage of a buried reservoir boundary fault.; LBL-11497; GREMP-11; SSS-R-80-4313 Title: Reservoir simulation studies: Wairakei Geothermal Field, New Zealand. Final report Author: Pritchett, J.W Year: 1980 Numerical reservoir simulation techniques were used to perform a history-match of the Wairakei geothermal system in New Zealand. First, a one-dimensional (vertical) model was chosen; realistic stratigraphy was incorporated and the known production history was imposed. The effects of surface and deep recharge were included. Good matches were obtained, both for the reservoir pressure decline history and changes in average discharge enthalpy with time. Next, multidimensional effects were incorporated by treating with a two-dimensional vertical section. Again, good history matches were obtained, although computed late-time discharge enthalpies were slightly high. It is believed that this disparity arises from inherently three-dimensional effects. Predictive calculations using the two-dimensional model suggest that continued future production will cause little additional reservoir pressure drop, but that thermal degradation will occur. Finally, ground subsidence data at Wairakei was examined. It was concluded that traditional elastic pore-collapse models based on classical soil-mechanics concepts are inadequate to explain the observed surface deformation. It is speculated that the measured subsidence may be due to structural effects such as aseismic slippage of a buried reservoir boundary fault.; LBL-11497; GREMP-11; SSS-R-80-4313 Close

• 12. [Image] Subsurface Geological and Geophysical Study of the Cerro Prieto Geothermal Field, Baja California, Mexico

  	The subsurface investigation of the Cerro Prieto field and surrounding area is described including the stratigraphy, structure, hydrothermal alteration, and reservoir properties for use in designing reservoir ...
  	Citation × Citation Citation Abstract Copy Title: Subsurface Geological and Geophysical Study of the Cerro Prieto Geothermal Field, Baja California, Mexico Author: Lyons, D.J. Year: 1980 The subsurface investigation of the Cerro Prieto field and surrounding area is described including the stratigraphy, structure, hydrothermal alteration, and reservoir properties for use in designing reservoir simulation models and planning development of the field. Insights into the depositional, tectonic, and thermal history of the area are presented. The following types of data were used: well sample descriptions and analyses, well logs, geophysical surveys; physiography, and regional geology. (MHR) Title: Subsurface Geological and Geophysical Study of the Cerro Prieto Geothermal Field, Baja California, Mexico Author: Lyons, D.J. Year: 1980 The subsurface investigation of the Cerro Prieto field and surrounding area is described including the stratigraphy, structure, hydrothermal alteration, and reservoir properties for use in designing reservoir simulation models and planning development of the field. Insights into the depositional, tectonic, and thermal history of the area are presented. The following types of data were used: well sample descriptions and analyses, well logs, geophysical surveys; physiography, and regional geology. (MHR) Close

• 13. [Image] Case History Report on East Mesa and Cerro Prieto Geothermal Fields

  	The geothermal resource has become an increasingly important alternate energy source in recent years. This has led to increased emphasis on developing and refining the technology involved in the development ...
  	Citation × Citation Citation Abstract Copy Title: Case History Report on East Mesa and Cerro Prieto Geothermal Fields Author: Davis, D. G. Year: 1979 The geothermal resource has become an increasingly important alternate energy source in recent years. This has led to increased emphasis on developing and refining the technology involved in the development and production of geothermal energy. Well log analysis as applied to the geothermal industry is one of the areas of technology in great need of further development. One means of improving log analysis technology is to study case histories of the past uses of log analysis as applied to specific fields. The project described in this report involved case history studies on two well-known geothermal areas in North America: The East Mesa field in California and the Cerro Prieto field in Mexico. Since there was considerably more pertinent material available on East Mesa, a major part of the effort on this project was devoted to studying the East Mesa field Title: Case History Report on East Mesa and Cerro Prieto Geothermal Fields Author: Davis, D. G. Year: 1979 The geothermal resource has become an increasingly important alternate energy source in recent years. This has led to increased emphasis on developing and refining the technology involved in the development and production of geothermal energy. Well log analysis as applied to the geothermal industry is one of the areas of technology in great need of further development. One means of improving log analysis technology is to study case histories of the past uses of log analysis as applied to specific fields. The project described in this report involved case history studies on two well-known geothermal areas in North America: The East Mesa field in California and the Cerro Prieto field in Mexico. Since there was considerably more pertinent material available on East Mesa, a major part of the effort on this project was devoted to studying the East Mesa field Close

• 14. [Image] Geothermal Progress Monitor Report No. 2, January/February 1980

  	Progress is reviewed in the following aspects of the program: electrical uses; direct-heat uses; leases; outreach and technical assistance; general activities; legal, institutional, and regulatory activities; ...
  	Citation × Citation Citation Abstract Copy Title: Geothermal Progress Monitor Report No. 2, January/February 1980 Author: Assistant Secretary for Resource Applications, Division of Geothermal Resource Management Year: 1980 Progress is reviewed in the following aspects of the program: electrical uses; direct-heat uses; leases; outreach and technical assistance; general activities; legal, institutional, and regulatory activities; and reports and publications (MHR) Title: Geothermal Progress Monitor Report No. 2, January/February 1980 Author: Assistant Secretary for Resource Applications, Division of Geothermal Resource Management Year: 1980 Progress is reviewed in the following aspects of the program: electrical uses; direct-heat uses; leases; outreach and technical assistance; general activities; legal, institutional, and regulatory activities; and reports and publications (MHR) Close

• 15. [Image] Montana Geothermal Handbook: A Guide to Agencies, Regulations, Permits and Financial Aids for Geothermal Development

  	The handbook is divided into three parts: a list of the permits required for various thermal projects, and an estimate of time needed to obtain them; a brief discussion of the statutes and regulations ...
  	Citation × Citation Citation Abstract Copy Title: Montana Geothermal Handbook: A Guide to Agencies, Regulations, Permits and Financial Aids for Geothermal Development Author: Perlmutter, S. Year: 1980 The handbook is divided into three parts: a list of the permits required for various thermal projects, and an estimate of time needed to obtain them; a brief discussion of the statutes and regulations referred to in Part 1; this information was gathered in a survey of state and federal regulations, as well as in conversations with numerous state and federal officials; and a description of the state and federal grant and loan funding available to a prospective geothermal developer. The names and addresses of the relevant state and federal agencies and legal citations are listed in appendices Title: Montana Geothermal Handbook: A Guide to Agencies, Regulations, Permits and Financial Aids for Geothermal Development Author: Perlmutter, S. Year: 1980 The handbook is divided into three parts: a list of the permits required for various thermal projects, and an estimate of time needed to obtain them; a brief discussion of the statutes and regulations referred to in Part 1; this information was gathered in a survey of state and federal regulations, as well as in conversations with numerous state and federal officials; and a description of the state and federal grant and loan funding available to a prospective geothermal developer. The names and addresses of the relevant state and federal agencies and legal citations are listed in appendices Close

• 16. [Image] Utilization of geothermal energy for methane production for J. A. Albertson Land and Cattle Company

  	To utilize the geothermal energy in the area of its 30,000-head cattle feedlot, J.A. Albertson Land and Cattle Co. is considering the development of an integrated geothermal/bioconversion system that would ...
  	Citation × Citation Citation Abstract Copy Title: Utilization of geothermal energy for methane production for J. A. Albertson Land and Cattle Company Author: Bissell, R.R. Year: 1980 To utilize the geothermal energy in the area of its 30,000-head cattle feedlot, J.A. Albertson Land and Cattle Co. is considering the development of an integrated geothermal/bioconversion system that would use the cattle manure as a feedstock for an anaerobic-digestion plant to produce methane plus a digester-residue cattle-feed supplement. The feedlot lies within a high-temperature gradient and heat-flow area associated with the Western Snake River basin in Malheur Co., Oregon. The three digesters designed for the process will operate mesophilically (at 98/sup 0/F) with a 20-day retention time. To make up the digesters' heat losses, the geothermal water source will need to be about 135/sup 0/F and have a flow rate of 120-240 gpm, depending on the size ultimately selected for the facility. If the digester residue replaces alfalfa hay in the cattle's current rations, its value will amount to $1.15 million/yr. Burning the methane in engine/generator sets would produce 985-1970 kW of electric power that could be either sold or used as a day-to-day substitute for the geothermal heat. An economic analysis of the system is presented; DOE/ET/27230-T2 Title: Utilization of geothermal energy for methane production for J. A. Albertson Land and Cattle Company Author: Bissell, R.R. Year: 1980 To utilize the geothermal energy in the area of its 30,000-head cattle feedlot, J.A. Albertson Land and Cattle Co. is considering the development of an integrated geothermal/bioconversion system that would use the cattle manure as a feedstock for an anaerobic-digestion plant to produce methane plus a digester-residue cattle-feed supplement. The feedlot lies within a high-temperature gradient and heat-flow area associated with the Western Snake River basin in Malheur Co., Oregon. The three digesters designed for the process will operate mesophilically (at 98/sup 0/F) with a 20-day retention time. To make up the digesters' heat losses, the geothermal water source will need to be about 135/sup 0/F and have a flow rate of 120-240 gpm, depending on the size ultimately selected for the facility. If the digester residue replaces alfalfa hay in the cattle's current rations, its value will amount to $1.15 million/yr. Burning the methane in engine/generator sets would produce 985-1970 kW of electric power that could be either sold or used as a day-to-day substitute for the geothermal heat. An economic analysis of the system is presented; DOE/ET/27230-T2 Close

• 17. [Image] Geothermal Demonstration Program 50 MW Power Plant, Baca Ranch, Sandoval and Rio Arriba Counties New Mexico, Final Environmental Impact Statement

  	In pursuit of the Federal Geothermal Program objective to accelerate the commercialization of geothermal energy in an environmentally sound manner, the DOE issued a program opportunity notice (paN) on ...
  	Citation × Citation Citation Abstract Copy Title: Geothermal Demonstration Program 50 MW Power Plant, Baca Ranch, Sandoval and Rio Arriba Counties New Mexico, Final Environmental Impact Statement Author: U.S. Department of Energy (USDOE) Year: 1980 In pursuit of the Federal Geothermal Program objective to accelerate the commercialization of geothermal energy in an environmentally sound manner, the DOE issued a program opportunity notice (paN) on September 30, 1977, inviting organizations to submit proposals for the design, construction, and operation of a geothermal electric power plant. The pan specified that the power plant must (1) Use a liquid-dominated geothermal reservoir, and (2) be located in the United States. The objectives of the paN were chosen to provide the maximum stimulus to non-Federal Development of the widest spectrum of hydrothermal resources that can be Used for electricity production Title: Geothermal Demonstration Program 50 MW Power Plant, Baca Ranch, Sandoval and Rio Arriba Counties New Mexico, Final Environmental Impact Statement Author: U.S. Department of Energy (USDOE) Year: 1980 In pursuit of the Federal Geothermal Program objective to accelerate the commercialization of geothermal energy in an environmentally sound manner, the DOE issued a program opportunity notice (paN) on September 30, 1977, inviting organizations to submit proposals for the design, construction, and operation of a geothermal electric power plant. The pan specified that the power plant must (1) Use a liquid-dominated geothermal reservoir, and (2) be located in the United States. The objectives of the paN were chosen to provide the maximum stimulus to non-Federal Development of the widest spectrum of hydrothermal resources that can be Used for electricity production Close

• 18. [Image] Utilization of geothermal energy in the mining and processing of tungsten ore: Final report

  	The engineering, economic, and environmental feasibility of the use of low and moderate temperature geothermal heat in the mining and processing of tungsten ore is explored. The following are covered: ...
  	Citation × Citation Citation Abstract Copy Title: Utilization of geothermal energy in the mining and processing of tungsten ore: Final report Author: Erickson, M.V. Year: 1981 The engineering, economic, and environmental feasibility of the use of low and moderate temperature geothermal heat in the mining and processing of tungsten ore is explored. The following are covered: general engineering evaluation, design of a geothermal energy system, economics, the geothermal resource, the institutional barriers assessment, environmental factors, an alternate geothermal energy source, and alternates to geothermal development. (MHR); DOE/ET/27232-T5 Title: Utilization of geothermal energy in the mining and processing of tungsten ore: Final report Author: Erickson, M.V. Year: 1981 The engineering, economic, and environmental feasibility of the use of low and moderate temperature geothermal heat in the mining and processing of tungsten ore is explored. The following are covered: general engineering evaluation, design of a geothermal energy system, economics, the geothermal resource, the institutional barriers assessment, environmental factors, an alternate geothermal energy source, and alternates to geothermal development. (MHR); DOE/ET/27232-T5 Close

• 19. [Image] Heatplan User Manual 2.0

  	Heat plan 2.0 is a microcomputer program designed to provide a neighborhood-level inventory of heat demands by type of land use, and a preliminary assessment of district heating favorabilities for the ...
  	Citation × Citation Citation Abstract Copy Title: Heatplan User Manual 2.0 Author: Eliot Allen & Associates Year: 1984 Heat plan 2.0 is a microcomputer program designed to provide a neighborhood-level inventory of heat demands by type of land use, and a preliminary assessment of district heating favorabilities for the neighborhoods Title: Heatplan User Manual 2.0 Author: Eliot Allen & Associates Year: 1984 Heat plan 2.0 is a microcomputer program designed to provide a neighborhood-level inventory of heat demands by type of land use, and a preliminary assessment of district heating favorabilities for the neighborhoods Close

• 20. [Image] Idaho Geothermal Report: A Review of Institutional Factors Affecting Geothermal Resource Development in Idaho

  	This report is an analysis of the role of government regarding geothermal resource development in Idaho. The influence of local, state and Federal government activities on geothermal development were examined ...
  	Citation × Citation Citation Abstract Copy Title: Idaho Geothermal Report: A Review of Institutional Factors Affecting Geothermal Resource Development in Idaho Author: McClain, D.W. Year: 1979 This report is an analysis of the role of government regarding geothermal resource development in Idaho. The influence of local, state and Federal government activities on geothermal development were examined for institutional steps, barriers, and current status. Local government activities were inventoried regarding local land use planning, zoning and building ordinances Title: Idaho Geothermal Report: A Review of Institutional Factors Affecting Geothermal Resource Development in Idaho Author: McClain, D.W. Year: 1979 This report is an analysis of the role of government regarding geothermal resource development in Idaho. The influence of local, state and Federal government activities on geothermal development were examined for institutional steps, barriers, and current status. Local government activities were inventoried regarding local land use planning, zoning and building ordinances Close