1,072 Matching Results

Search Results

Advanced search parameters have been applied.
in subjects: "Geothermal Fields"  
Results: 1 - 24 next
open access

Quantitative analysis of the hydrothermal system in Lassen Volcanic National Park and Lassen Known Geothermal Resource Area

Description: The Lassen hydrothermal system is in the southern Cascade Range, approximately 70 kilometers east-southeast of Redding, California. The conceptual model of the Lassen system is termed a liquid-dominated hydrothermal system with a parasitic vapor-dominated zone. The essential feature of this model is that steam and steam-heated discharge at relatively high elevations in Lassen Volcanic National Park (LVNP) and liquid discharge with high chloride concentrations at relatively low elevations outsid… more
Date: January 1, 1984
Creator: Sorey, M.L. & Ingebritsen, S.E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Geothermal resources in California: the problems and the potential

Description: The report is presented under the following section headings: introduction; conclusions and recommendations; legislative activity in 1973; United Nations Geothermal Conference; International Geothermal Conference--1975; National Conference on Geothermal Energy, May 10--11, Palm Springs, Calif.; Imperial Valley field trip and joint interim hearing October 16--17, 1973 (Senate Committee on Natural Resources and Wildlife on Senate Bill 577 in San Diego); hearing of the Subcommittee on Geothermal R… more
Date: January 1, 1973
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Retrospective examination of geothermal environmental assessments

Description: 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 gon… more
Date: March 1, 1984
Creator: Webb, J. W.; Eddlemon, G. K. & Reed, A. W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Geothermal Materials Development, Annual Report FY 1991

Description: Advances in the development of new materials, the commercial availabilities of which are essential for the attainment of Hydrothermal Category Level I and II Objectives, continue to be made in the Geothermal Materials Development Project. Many successes have already been accrued and the results used commercially. In FY 1991, utility company sponsored full cost'' recovery programs based upon materials technology developed in this project were initiated on topics such as condensing heat exchanger… more
Date: December 1, 1991
Creator: Kukacka, L. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Controlled-source electromagnetic survey at Soda Lakes geothermal area, Nevada

Description: The EM-60 system, a large-moment frequency-domain electromagnetic loop prospecting system, was operated in the Soda Lakes geothermal area, Nevada. Thirteen stations were occupied at distances ranging from 0.5-3.0 km from two transmitter sites. These yielded four sounding curves--the normalized amplitudes and phases of the vertical and radial magnetic fields as a function of frequency--at each station. In addition, two polarization ellipse parameters, ellipticity and tilt angle, were calculated … more
Date: July 1, 1980
Creator: Stark, M.; Wilt, M.; Haught, J. R. & Goldstein, N.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Inspection of the Heber binary-cycle geothermal project

Description: We concluded that DOE had effective management control procedures to monitor project costs and the design, construction and demonstration activities. Lessons learned from previous DOE geothermal projects were applied and technical information generated from the Heber plant will be transferred to the public and private sectors by the project participants. We also identified the following issues that concerned us: Revenue Sharing: under existing revenue sharing provisions in the Cooperative Agree… more
Date: March 28, 1984
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Resource, technology, and environment at the geysers

Description: A general review, description, and history of geothermal development at the Geysers is presented. Particular emphasis is placed on environmental impacts of development of the area. The discussion is presented under the following chapter titles: introduction; energy, enthalpy and the First Law; vapor-producing geothermal reservoirs--review and models; geothermal; entropy and the Second Law; power plants--basics; H/sub 2/S emissions; hydrogen sulfide--possible health effects and odor; other emiss… more
Date: June 1, 1977
Creator: Weres, O.; Tsao, K. & Wood, B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Microfaunal evidence of age and depositional environments of the Cerro Prieto section (Plio-Pleistocene), Baja California, Mexico

Description: Microfossils including benthic and planktic foraminifera, ostracodes, calcareous algae, fish skeletal material, and fragments of pelecypods were found in 14 core samples from depths of 185 to 1952 m in the Cerro Prieto geothermal field, providing evidence of both the age and depositional history of sediments comprising the 3000-m-thick Pliocene and Pleistocene section in this area. Ostracodes of brackish water and marine origin constitute the most common microfossils present in this sequence oc… more
Date: January 1, 1982
Creator: Ingle, J.C. Jr.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Cumulative impacts study of The Geysers KGRA: public-service impacts of geothermal development

Description: Geothermal development in The Geysers KGRA has affected local public services and fiscal resources in Sonoma, Lake, Mendocino, and Napa counties. Each of these counties underwent rapid population growth between 1970 and 1980, some of which can be attributed to geothermal development. The number of workers currently involved in the various aspects of geothermal development in The Geysers is identified. Using three different development scenarios, projections are made for the number of power plan… more
Date: May 1, 1982
Creator: Matthews, K.M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Water assessment report, section 13(b)

Description: An assessment is presented of water requirements and water supply availability for a proposed Geothermal Binary Demonstration Electric Generation Project near Heber, California. The following topics are discussed: principal findings, project description, water supply and availability, and effects of the project. (MHR)
Date: September 1, 1980
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

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

Description: 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 l… more
Date: August 1, 1980
Creator: Miller, K. R. & Elders, W. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Alternate materials of construction for geothermal applications. Progress report No. 14, July--September 1977

Description: A program to determine if non-metallic materials such as polymers, concrete polymer composites, and refractory cements can be utilized as materials of construction in geothermal processes is in progress. To date, several high temperature polymer concrete systems have been formulated, laboratory and field tests performed in brine, flashing brine, and steam at temperatures up to 260/sup 0/C (500/sup 0/F), and economic studies started. Laboratory data for exposure times > 2 years are available. Re… more
Date: September 1, 1977
Creator: Kukacka, L. E.; Fontana, J.; Zeldin, A.; Sugama, T.; Horn, W.; Carciello, N. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Drilling fluid/formation interaction at simulated in situ geothermal conditions. Final report

Description: Interaction of drilling fluids with a geothermal reservoir formation can result in significant permeability impairment and therefore reduced well productivity. This interaction is studied under simulated in situ geothermal conditions of overburden stress, pore fluid pressure, temperature, and pore fluid chemistry. Permeability impairment of an East Mesa KGRA reservoir material is evaluated as a function of stagnation time, drilling fluid, and temperature. Results indicate that all of these para… more
Date: July 1, 1980
Creator: Enniss, D. O.; Bergosh, J. L.; Butters, S. W. & Jones, A. H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Environmental impact report (draft)

Description: The three projects as proposed by Pacific Gas and Electric Company and the environmental analysis of the projects are discussed. Sections on the natural and social environments of the proposed projects and their surrounding areas consist of descriptions of the setting, discussions of the adverse and beneficial consequences of the project, and potential mitigation measures to reduce the effects of adverse impacts. The Environmental Impact Report includes discussions of unavoidable adverse effect… more
Date: May 1, 1980
Item Type: Refine your search to only Book
Partner: UNT Libraries Government Documents Department
open access

Energy related studies utilizing microcline thermochronology: Progress report, May 1, 1987-April 30, 1988

Description: Rock samples from the Salton Sea Geothermal Field (sandstone, tuff, granite) and from accretionary prism sediments along the convergent margins in southeast Alaska and southwest Japan have been dated by the /sup 40/Ar/sup 39/Ar method. Paleotemperatures have been calculated. (ACR
Date: April 30, 1988
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Lack of immediate effects from the 1979-80 Imperial and Victoria earthquakes on the exploited Cerro Prieto geothermal reservoir

Description: In 1979-1980 two large earthquakes of local magnitude (M/sub L/) greater than 6.0 occurred near the Cerro Prieto geothermal field. It has been suggested that related to these seismic events there was an abrupt temperature increase in the wells completed in the shallow (alpha) reservoir. A careful study of the geochemistry of the produced fluids, as well as a cursory reservoir engineering analysis, cannot confirm either the data or the hypothesis of a massive influx of hot water into the system … more
Date: June 1, 1986
Creator: Truesdell, A.H. & Lippmann, M.J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Identification of fluid-flow paths in the Cerro Prieto geothermal field

Description: A hydrogeologic model of the Cerro Prieto geothermal field has been developed based on geophysical and lithologic well logs, downhole temperature, and well completion data from about 90 deep wells. The hot brines seem to originate in the eastern part of the field, flowing in a westward direction and rising through gaps in the shaly layers which otherwise act as partial caprocks to the geothermal resource.
Date: May 1, 1982
Creator: Halfman, S. E.; Lippmann, M. J.; Zelwer, R. & Howard, J. H.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Shallow hydrothermal regime of the East Brawley and Glamis known geothermal resource areas, Salton Trough, California

Description: Thermal gradients and thermal conductivities were obtained in real time using an in situ heat-flow technique in 15 shallow (90 to 150 m) wells drilled between Brawley and Glamis in the Imperial Valley, Southern California. The in situ measurements were supplemented by follow-up conventional temperature logs in seven of the wells and by laboratory measurements of thermal conductivity on drill cuttings. The deltaic sedimentary material comprising the upper approx. 100 m of the Salton Trough gener… more
Date: January 1, 1981
Creator: Mase, C. W.; Sass, J. H.; Brook, C. A. & Munroe, R. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Review of water resource potential for developing geothermal resource sites in the western United States

Description: Water resources at 28 known geothermal resource areas (KGRAs) in the western United States are reviewed. Primary emphasis is placed upon examination of the waer resources, both surface and ground, that exist in the vicinity of the KGRAs located in the southwestern states of California, Arizona, Utah, Nevada, and New Mexico. In most of these regions water has been in short supply for many years and consequently a discussion of competing demands is included to provide an appropriate perspective o… more
Date: July 1, 1980
Creator: Sonnichsen, J.C. Jr.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Seismological investigation of crack formation in hydraulic rock fracturing experiments and in natural geothermal environments. Progress report, September 1, 1979-August 31, 1980

Description: Progress is reported in the following research areas: a synthesis of seismic experiments at the Fenton Hill Hot-Dry-Rock System; attenuation of high-frequency shear waves in the lithosphere; a new kinematic source model for deep volcanic tremors; ground motion in the near-field of a fluid-driven crack and its interpretation in the study of shallow volcanic tremor; low-velocity bodies under geothermal areas; and operation of event recorders in Mt. St. Helens and Newberry Peak with preliminary re… more
Date: September 1, 1980
Creator: Aki, K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Preferred methods of analysis for chemical tracers in moderate- and high-temperature geothermal environments

Description: This report describes the sampling and analytical techniques used for tracer analysis in the Raft River and East Mesa field tests. The collection procedures and sample preservation techniques, analytical methods and possible sources of contamination or error are discussed in detail. 6 refs.
Date: December 1, 1984
Creator: Kroneman, R.L.; Yorgason, K.R. & Moore, J.N.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
Back to Top of Screen