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• 1. [Image] Geothermal Progress Monitor Report No. 11, December 1989

  	This issue of the Geothermal Progress Monitor (GPM) is the 11th since the inception of the publication in 1980. It continues to synthesize information on all aspects of geothermal development in this country ...
  	Citation × Citation Citation Abstract Copy Title: Geothermal Progress Monitor Report No. 11, December 1989 Author: Assistant Secretary for Conservation and Renewable Energy, Geothermal Teahnology Division Year: 1989 This issue of the Geothermal Progress Monitor (GPM) is the 11th since the inception of the publication in 1980. It continues to synthesize information on all aspects of geothermal development in this country and abroad to permit identification and quantification of trends in the use of this energy technology. In addition, the GPM is a mechanism for transferring current information on geothermal technology development to the private sector, and, over time, provides a historical record for those interested in the development pathway of the resource. In sum, the Department of Energy makes the GPM available to the many diverse interests that make up the geothermal community for the multiple uses it may serve. This issue of the GPM points up very clearly how closely knit many of those diverse interests have become. It might well be called an international issue'' since many of its pages are devoted to news of geothermal development abroad, to the efforts of the US industry to participate in overseas development, to the support given those efforts by federal and state agencies, and to the formation of the International Geothermal Association (IGA). All of these events indicate that the geothermal community has become truly international in character, an occurrence that can only enhance the future of geothermal energy as a major source of energy supply worldwide. 15 figs. Title: Geothermal Progress Monitor Report No. 11, December 1989 Author: Assistant Secretary for Conservation and Renewable Energy, Geothermal Teahnology Division Year: 1989 This issue of the Geothermal Progress Monitor (GPM) is the 11th since the inception of the publication in 1980. It continues to synthesize information on all aspects of geothermal development in this country and abroad to permit identification and quantification of trends in the use of this energy technology. In addition, the GPM is a mechanism for transferring current information on geothermal technology development to the private sector, and, over time, provides a historical record for those interested in the development pathway of the resource. In sum, the Department of Energy makes the GPM available to the many diverse interests that make up the geothermal community for the multiple uses it may serve. This issue of the GPM points up very clearly how closely knit many of those diverse interests have become. It might well be called an international issue'' since many of its pages are devoted to news of geothermal development abroad, to the efforts of the US industry to participate in overseas development, to the support given those efforts by federal and state agencies, and to the formation of the International Geothermal Association (IGA). All of these events indicate that the geothermal community has become truly international in character, an occurrence that can only enhance the future of geothermal energy as a major source of energy supply worldwide. 15 figs. Close

• 2. [Image] Geothermal Progress Monitor: Report No. 18, December 1996

  	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 ...
  	Citation × Citation Citation Abstract Copy Title: Geothermal Progress Monitor: Report No. 18, December 1996 Author: Assistant Secretary for Energy and Efficiency and Renewable Energy, Geothermal Division Year: 1996 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 Title: Geothermal Progress Monitor: Report No. 18, December 1996 Author: Assistant Secretary for Energy and Efficiency and Renewable Energy, Geothermal Division Year: 1996 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 Close

• 3. [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

• 4. [Image] Geothermal Progress Monitor: Report No. 19, December 1997

  	Short articles are presented related to activities in the federal government and the geothermal industry, international developments, state and local government activities, technology development, and ...
  	Citation × Citation Citation Abstract Copy Title: Geothermal Progress Monitor: Report No. 19, December 1997 Author: Assistant Secretary for Energy and Efficiency and Renewable Energy, Office of Geothermal Technologies Year: 1997 Short articles are presented related to activities in the federal government and the geothermal industry, international developments, state and local government activities, technology development, and technology transfer. Power plant tables and a directory of organizations involved in geothermal resource development are included Title: Geothermal Progress Monitor: Report No. 19, December 1997 Author: Assistant Secretary for Energy and Efficiency and Renewable Energy, Office of Geothermal Technologies Year: 1997 Short articles are presented related to activities in the federal government and the geothermal industry, international developments, state and local government activities, technology development, and technology transfer. Power plant tables and a directory of organizations involved in geothermal resource development are included Close

• 5. [Image] Hot Dry Rock Geothermal Energy Development Program. Annual Report, Fiscal Year 1983

  	Emphasis was on hydraulic-fracturing experiments at depths around 3.5 km (11,473 ft) in the two inclined wells of the Phase II system at Fenton Hill, New Mexico; on improved facilities and techniques for ...
  	Citation × Citation Citation Abstract Copy Title: Hot Dry Rock Geothermal Energy Development Program. Annual Report, Fiscal Year 1983 Author: Smith, M.C. (comp.) Year: 1985 Emphasis was on hydraulic-fracturing experiments at depths around 3.5 km (11,473 ft) in the two inclined wells of the Phase II system at Fenton Hill, New Mexico; on improved facilities and techniques for mapping the source locations of acoustic signals generated by the fracturing events; on mathematical modeling of the fracture systems produced in these and earlier experiments; and on development of a family of slimline high-temperature downhole instruments that can be used within or through relatively small-diameter pressure tubing. Hydraulic fracturing at a vertical depth of approximately 3500 m (11,500 ft) in well EE-2, the deeper well, produced fractures that, in acoustic maps, appear to occupy a large, roughly ellipsoidal volume whose major axis is directed to the north of the other well, EE-3. Hydraulic fracturing from EE-3 at a similar depth produced another set of fractures that appear to be approximately parallel to and centered about 180 m (600 ft) east of the earlier set. Subsequent fluid injections reduced the distance between the two sets, but no hydraulic connection between them was established. Modeling the silica concentrations of fluid circulated through the earlier Phase I system indicates that this type of permeation also contributes significantly to heat extraction during system operation. The precision and accuracy of locating the sources of acoustic signals detected during hydraulic-fracturing operations have been increased by improvements in equipment, drilling of another deep hole for geophone emplacement, and additional station calibrations. Analysis of the signals has also been improved and broadened. Development of slimline downhole instruments has included a detonator tool, a geophone package, and final design of a high-temperature borehole acoustic televiewer. A crosswell acoustic transceiver has also been developed for investigating rock type and structure between wellbores. 32 refs., 35 figs. Title: Hot Dry Rock Geothermal Energy Development Program. Annual Report, Fiscal Year 1983 Author: Smith, M.C. (comp.) Year: 1985 Emphasis was on hydraulic-fracturing experiments at depths around 3.5 km (11,473 ft) in the two inclined wells of the Phase II system at Fenton Hill, New Mexico; on improved facilities and techniques for mapping the source locations of acoustic signals generated by the fracturing events; on mathematical modeling of the fracture systems produced in these and earlier experiments; and on development of a family of slimline high-temperature downhole instruments that can be used within or through relatively small-diameter pressure tubing. Hydraulic fracturing at a vertical depth of approximately 3500 m (11,500 ft) in well EE-2, the deeper well, produced fractures that, in acoustic maps, appear to occupy a large, roughly ellipsoidal volume whose major axis is directed to the north of the other well, EE-3. Hydraulic fracturing from EE-3 at a similar depth produced another set of fractures that appear to be approximately parallel to and centered about 180 m (600 ft) east of the earlier set. Subsequent fluid injections reduced the distance between the two sets, but no hydraulic connection between them was established. Modeling the silica concentrations of fluid circulated through the earlier Phase I system indicates that this type of permeation also contributes significantly to heat extraction during system operation. The precision and accuracy of locating the sources of acoustic signals detected during hydraulic-fracturing operations have been increased by improvements in equipment, drilling of another deep hole for geophone emplacement, and additional station calibrations. Analysis of the signals has also been improved and broadened. Development of slimline downhole instruments has included a detonator tool, a geophone package, and final design of a high-temperature borehole acoustic televiewer. A crosswell acoustic transceiver has also been developed for investigating rock type and structure between wellbores. 32 refs., 35 figs. Close

• 6. [Image] Geothermal Progress Monitor, Report No. 13, February 1992

  	Geothermal Progress Monitor (GPM) Issue No. 13 documents that most related factors favor the growth and geographic expansion of the US geothermal industry and that the industry is being technologically ...
  	Citation × Citation Citation Abstract Copy Title: Geothermal Progress Monitor, Report No. 13, February 1992 Author: Assistant Secretary for Conservation and Renewable Energy, Geothermal Division Year: 1992 Geothermal Progress Monitor (GPM) Issue No. 13 documents that most related factors favor the growth and geographic expansion of the US geothermal industry and that the industry is being technologically prepared to meet those challenges into the next century. It is the function of GPM to identify trends in the use of this resource and to provide a historical record of its development pathway. The information assembled for this issue of GPM indicates that trends in the use of geothermal energy in this country and abroad continue to be very positive. Favorable sentiments as well as pertinent actions on the part of both government and industry are documented in almost every section. The FEDERAL BEAT points up that the National Energy Strategy (NES) developed at the highest levels of the US government recognizes the environmental and energy security advantages of renewable energy, including geothermal, and makes a commitment to substantial diversification'' of US sources of energy. With the announcement of the construction of several new plants and plant expansions, the INDUSTRY SCENE illustrates industry's continued expectation that the use of geothermal energy will prove profitable to investors. In DEVELOPMENT STATUS, spokesmen for both an investor-owned utility and a major geothermal developer express strong support for geothermal power, particularly emphasizing its environmental advantages. DEVELOPMENT STATUS also reports that early successes have been achieved by joint DOE/industry R D at The Geysers which will have important impacts on the future management of this mature field. Also there is increasing interest in hot dry rock. Analyses conducted in support of the NES indicate that if all the postulated technology developments occur in this field, the price of energy derived from hot dry rock in the US could drop Title: Geothermal Progress Monitor, Report No. 13, February 1992 Author: Assistant Secretary for Conservation and Renewable Energy, Geothermal Division Year: 1992 Geothermal Progress Monitor (GPM) Issue No. 13 documents that most related factors favor the growth and geographic expansion of the US geothermal industry and that the industry is being technologically prepared to meet those challenges into the next century. It is the function of GPM to identify trends in the use of this resource and to provide a historical record of its development pathway. The information assembled for this issue of GPM indicates that trends in the use of geothermal energy in this country and abroad continue to be very positive. Favorable sentiments as well as pertinent actions on the part of both government and industry are documented in almost every section. The FEDERAL BEAT points up that the National Energy Strategy (NES) developed at the highest levels of the US government recognizes the environmental and energy security advantages of renewable energy, including geothermal, and makes a commitment to substantial diversification'' of US sources of energy. With the announcement of the construction of several new plants and plant expansions, the INDUSTRY SCENE illustrates industry's continued expectation that the use of geothermal energy will prove profitable to investors. In DEVELOPMENT STATUS, spokesmen for both an investor-owned utility and a major geothermal developer express strong support for geothermal power, particularly emphasizing its environmental advantages. DEVELOPMENT STATUS also reports that early successes have been achieved by joint DOE/industry R D at The Geysers which will have important impacts on the future management of this mature field. Also there is increasing interest in hot dry rock. Analyses conducted in support of the NES indicate that if all the postulated technology developments occur in this field, the price of energy derived from hot dry rock in the US could drop Close

• 7. [Image] Evaluation of Geothermal Energy Exploration and Resource Assessment. Final Report. Volume I. A Review of Geothermal Subsidence Modeling

  	The present status of the numerical modeling of subsidence phenomena associated with the production of fluid from geothermal reservoirs is evaluated. This evaluation includes a comparative analysis of ...
  	Citation × Citation Citation Abstract Copy Title: Evaluation of Geothermal Energy Exploration and Resource Assessment. Final Report. Volume I. A Review of Geothermal Subsidence Modeling Author: Grover, M.K. Year: 1977 The present status of the numerical modeling of subsidence phenomena associated with the production of fluid from geothermal reservoirs is evaluated. This evaluation includes a comparative analysis of present numerical modeling codes including an evaluation of their potential for application to specific geologic environments where the subsidence may occur. In addition, this report provides preparation guidelines for subsidence modeling application to assist program managers responsible for the supervision of subsidence monitoring and control measures associated with geothermal development. Also included are sections on data acquisition and management and a proposed method for qualitatively ranking the subsidence risks of a known geothermal reservoir. The subject of data uncertainties management is introduced and briefly discussed Title: Evaluation of Geothermal Energy Exploration and Resource Assessment. Final Report. Volume I. A Review of Geothermal Subsidence Modeling Author: Grover, M.K. Year: 1977 The present status of the numerical modeling of subsidence phenomena associated with the production of fluid from geothermal reservoirs is evaluated. This evaluation includes a comparative analysis of present numerical modeling codes including an evaluation of their potential for application to specific geologic environments where the subsidence may occur. In addition, this report provides preparation guidelines for subsidence modeling application to assist program managers responsible for the supervision of subsidence monitoring and control measures associated with geothermal development. Also included are sections on data acquisition and management and a proposed method for qualitatively ranking the subsidence risks of a known geothermal reservoir. The subject of data uncertainties management is introduced and briefly discussed Close

• 8. [Image] Systems of Geothermal Exploration with Applications in Utah

  	Personnel of the Department of Geology and Geophysics of the University of Utah are conducting research directed toward the design of exploration systems suited to detection, delineation, and evaluation ...
  	Citation × Citation Citation Abstract Copy Title: Systems of Geothermal Exploration with Applications in Utah Author: Ward, S. H. Year: 1974 Personnel of the Department of Geology and Geophysics of the University of Utah are conducting research directed toward the design of exploration systems suited to detection, delineation, and evaluation of potential geothermal resources in the State of Utah. These systems will be tested An areas of known hot springs, late Tertiary or Quaternary volcanic activity, current microearthquake activity and in areas of known high heat flow. Photo-interpretation, geologic mapping, structural analysis, petrologic study, hydrothermal alteration studies, geochemical analyses, geothermometry, geochronology, microearthquake and seismic noise monitoring, heat flow measurement, self-potential surveying, resistivity/induced polarization surveying, electromagnetic sounding, magnetic surveying, and gravity surveying may be combined to maximize scientific yield while maintaining low costs in order to optimize the cost-effectiveness of each system. Other ingredients of exploration architecture shall be incorporated if considered desirable. It is anticipated that not all ingredients shall be used on any one prospect Title: Systems of Geothermal Exploration with Applications in Utah Author: Ward, S. H. Year: 1974 Personnel of the Department of Geology and Geophysics of the University of Utah are conducting research directed toward the design of exploration systems suited to detection, delineation, and evaluation of potential geothermal resources in the State of Utah. These systems will be tested An areas of known hot springs, late Tertiary or Quaternary volcanic activity, current microearthquake activity and in areas of known high heat flow. Photo-interpretation, geologic mapping, structural analysis, petrologic study, hydrothermal alteration studies, geochemical analyses, geothermometry, geochronology, microearthquake and seismic noise monitoring, heat flow measurement, self-potential surveying, resistivity/induced polarization surveying, electromagnetic sounding, magnetic surveying, and gravity surveying may be combined to maximize scientific yield while maintaining low costs in order to optimize the cost-effectiveness of each system. Other ingredients of exploration architecture shall be incorporated if considered desirable. It is anticipated that not all ingredients shall be used on any one prospect Close

• 9. [Image] Geothermal Energy, Research, Development and Demonstration Program. Second Annual Report

  	The discussion is presented under the following section headings: Executive Summary; National geothermal utilization estimates; Federal Geothermal Energy Program objective; Federal Geothermal Energy strategy; ...
  	Citation × Citation Citation Abstract Copy Title: Geothermal Energy, Research, Development and Demonstration Program. Second Annual Report Author: Interagency Geothermal Coordinating Council Year: 1978 The discussion is presented under the following section headings: Executive Summary; National geothermal utilization estimates; Federal Geothermal Energy Program objective; Federal Geothermal Energy strategy; Federal Program planning, implementation, and progress monitoring; organization of the Report; National progress and achievements; regional progress and accomplishments; fiscal year 1978 activities; federal program activities in fiscal year 1979 and beyond; Appendix A--interagency coordination and program management Interagency Geothermal Coordinating Council (IGCC); and appendix B--interNational activities Title: Geothermal Energy, Research, Development and Demonstration Program. Second Annual Report Author: Interagency Geothermal Coordinating Council Year: 1978 The discussion is presented under the following section headings: Executive Summary; National geothermal utilization estimates; Federal Geothermal Energy Program objective; Federal Geothermal Energy strategy; Federal Program planning, implementation, and progress monitoring; organization of the Report; National progress and achievements; regional progress and accomplishments; fiscal year 1978 activities; federal program activities in fiscal year 1979 and beyond; Appendix A--interagency coordination and program management Interagency Geothermal Coordinating Council (IGCC); and appendix B--interNational activities Close