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An extensive literature search was made to locate technical publications and computer programs relating to wellbore temperatures during drilling operations. The search confirmed the need for knowledge ...
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It is possible to design a canister to cool a borehole gravimeter for use in geothermal and high-temperature (up to 350/sup 0/C) gas wells. Repeat surveys with such a gravimeter could (1) help estimate ...
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This Open-File Report consists of fluid temperature logs compiled during studies of the geohydrology and low temperature geothermal resources of eastern Washington. The fluid temperature logs are divided ...
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Low temperature geothermal fluid is defined in OAR Chapter 690, Division 65 as any ground water used for its thermal characteristics that is encountered in a well with a bottom hole temperature less than ...
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An oil and gas exploration well, located near Jesup in Wayne County, Georgia (lat. 31/sup 0/32' N, long. 81/sup 0/43' W), was deepened and used for geothermal temperature-gradient measurements. The well ...
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6. [Image] The Cody Hydrothermal System
The hot springs of Colter's Hell are the surface manifestations of a much larger hydrothermal system. That system has been studied to define its extent, maximum temperature, and mechanism of operation. ...Citation -
7. [Image] Interactive Fracture Design Model
A computer program is described that can be used to design a fracture stimulation treatment for a geothermal reservoir. The program uses state-of-the-art methods to calculate the temperature of the fracture ...Citation -
Feasibility studies of nuclear techniques applicable to the determination of geothermal formation temperature and two-phase brine flow downhole have been performed. The formation temperature gauging technique ...
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An assessment of the geothermal resources of Caliente, Nevada was made to provide information on resource characteristics and to site 2 (two) 500 ft (152 m) test wells to confirm the resource. The strategy ...
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Multielement geochemical analysis of drill cuttings from 18 shallow and 2 intermediate-depth temperature gradient holes outlines an area of anomalous geochemistry related to the fluid flow and temperature ...
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11. [Image] Static Downhole Characteristics of Well CGEH-1 at Coso Hot Springs, China Lake, California
A series of measurements was made in the exploratory well CGEH-1 at Coso Hot Springs. The temperature measurements provide estimates for the thermal equilibration of the well and indicate that the fractures ...Citation -
The present status of the formation temperature gauge feasibility study is reported. It also demonstrates the feasibility of the technique in the simplified situations examined to date both analytically ...
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13. [Image] Low-Temperature Geothermal Potential of the Ojo Caliente Warm Springs Area, Northern New Mexico
A detailed geochemical investigation of 17 waters (thermal and cold, mineralized and dilute) was performed in the Ojo Caliente-La Madera area. Two types of thermomineral waters have separate and distinctive ...Citation -
The Utah Geological and Mineral Survey (UGMS) has been conducting research to identify low-temperature geothermal resources in Utah as per U.S. Department of Energy (DOE) Contract OE-AS07-77ET28393. This ...
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15. [Image] Drilling fluid/formation interaction at simulated in situ geothermal conditions. Final report
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 ...Citation -
16. [Image] Annual Report on the Project to Design and Experimentally Test an Improved Geothermal Drill Bit
Progress is reported in a research and development program to design, build, and test an improved geothermal drill bit. The major tasks of the Phase I effort are entitled: failure mechanisms of existing ...Citation -
17. [Image] Geothermal District Heating Projects
The geothermal energy stored within the interior of the earth amounts to a significant quantity which, if fully exploited, could supply the energy needs of man for a millennia. Low temperature hydrothermal ...Citation -
18. [Image] Geotechnical Studies of Geothermal Reservoirs
Maximum temperatures found in the reservoir were approximately 700°F in the Imperial Valley, California, but drill bit temperatures may be considerably higher in the Geysers geothermal area. Temperatures ...Citation -
California laws for the conservation of geothermal resources. This covers rules for drilling geothermal wells
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California laws for the conservation of geothermal resources. This covers rules for drilling geothermal wells
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The development and testing of seals and lubricants for journal-type roller-cone rock bits for drilling into geothermal reservoirs at temperatures over 260/sup 0/C (500/sup 0/F) are described. The conditions ...
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22. [Image] A Geological and Geophysical Study of the Geothermal Energy Potential of Pilgrim Springs, Alaska
The Pilgrim Springs geothermal area, located about 75 km north of Nome, was the subject of an intensive, reconnaissance-level geophysical and geological study during a 90-day period in the summer of 1979. ...Citation -
This program was written to be used as a subroutine. The program determines the thermodynamics of Freon refrigerants. The following refrigerants can be analyzed F-ll, F-12, F-13, F-14, F-21, F-22, F-23, ...
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To calculate heat extraction and thermal recovery in hot dry rock geothermal reservoirs, a computer code was written to solve the differential equations for rock-water heat conduction and convection by ...
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A theoretical model of the hydrolysis of microcline by a hydrothermal solution has been determined for a closed system at constant temperature. Hypothetical solution compositions and temperatures were ...
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The Coso Geothermal Exploration Hole number one (CGEH-1) was drilled in the Coso Hot Springs KGRA, California from September 2 to December 2, 1977. Chip samples were collected at ten foot intervals and ...
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The Kingman-Williams region, Arizona, possesses few thermal waters of deep origin. Evaluation of 33 waters (8 thermal) reveals that thermal waters are restricted to the Basin and Range tectonic province; ...
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28. [Image] Klamath Christian Center Heating System
On December 6, 1983, Dave South well contacted the Geo-Heat Center requesting information and possible assistance in analyzing problems with the geothermal wells and heating system. About a week later, ...Citation -
29. [Image] Geothermal Direct-Heat Utilization Assistance, Final Report: September 26, 1990 to March 31, 1999
The objectives of the use of the money awarded to the Geo-Heat Center were to obtain increased utilization of the large low-to-moderate temperature geothermal resource base by providing users with: (1) ...Citation -
Since 1978, the Division of Geology and Earth Resources of the Washington Department of Natural Resources has participated in the U.S. Department of Energy's (USDOE) StateCoupled Geothermal Resource Program. ...
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A preliminary feasibility study of utilizing low temperature geothermal sources in Colorado to heat buildings has been completed. It is concluded that the technology for using geothermal sources to heat ...
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32. [Image] Heat Flow of Oregon
An extensive new heat flow and geothermal gradient data set for the State of Oregon is presented on a contour map of heat flow at a scale of 1:1,000,000 and is summarized in several figures and tables. ...Citation -
33. [Image] Potential of Low-Temperature Geothermal Resources in Northern California. Report No. TR13
Economically feasible uses for geothermal heat at temperatures too low for conventional electrical power generation at present are delineated. Several geothermal resource areas in northern California that ...Citation -
The results of a study to determine the engineering and economic feasibility of using the Wasatch Hot Spring resource for space heating of the Children's Library building are presented. The Wasatch Hot ...
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The ultimate goal of the project was to produce a geothermal resource map of Nevada that provided detailed information on low- to moderate-temperature geothermal systems, and that also evaluated their ...
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The oxidation-reduction (known as redox) electrode was studied in a pH range corresponding to that found in a CO/sub 2/-silicate buffered system at temperatures ranging from 100 to 250/sup 0/C. Oxidizing ...
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This report presents results of a Workshop on Geophysical Measurements in Geothermal Wells, hosted in Albuquerque, September 17-19, by Sandia Laboratories and jointly sponsored by the United States Geological ...
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A seven-week pumping and injection test in the geothermal aquifer at Klamath Falls, Oregon, in 1983 provided new information on hydraulic properties of the aquifer. The Open-File Data Report on the tests ...
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39. [Image] Analysis and Interpretation of Data obtained in Tests of the Geothermal Aquifer at Klamath Falls, Oregon
A study of the geothermal resource at Klamath Falls, Oregon, has shown that thermal water occurs in an extensive, heterogeneous aquifer at depths of a few hundred to nearly 2,000 feet over an area of nearly ...Citation -
40. [Image] Determination of the 5 MW Gross Nominal Design Case Binary Cycle for Power Generation at Raft River, Idaho
This report documents a series of Rankine Cycle studies for power generation utilizing geothermal fluid as the heat source and isobutane as the working fluid. To find the plant configuration which would ...Citation -
The Department of Energy, Division of Geothermal Energy, has charged the Bureau of Geology and Mineral Technology, Geological Survey Branch with development of a cost-effective exploration program for ...
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42. [Image] Geothermal Resource Exploration in Boise, Idaho
Exploratory drilling in Boise, Idaho, in the vicinity of the Boise Front Fault has confirmed the presence of a 170/sup 0/F (77/sup 0/C) geothermal resource below about 800 ft (244 m) near the Veterans ...Citation -
43. [Image] Development of the Groundwater Heat Source
The air-to-air heat pump has long been used for extracting heat from a cool source and supplying heat at a much higher temperature. The water source heat pump applies the same principal (sic). In the case ...Citation -
This paper describes the costs and performance of nine operational geothermal direct heat demonstration projects. The projects analyzed include three individual user-owned space and water heating systems ...
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The Coso Geothermal Exploration Hole number one (CGEH-1) was drilled in the Coso Hot Springs KGRA, California, from September 2 to December 2, 1977. Chip samples were collected at ten foot intervals and ...
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Progress in an experimental and analytical research program to evaluate and improve the design of downhole heat exchangers (DHEs) for direct applications of geothermal energy is reported. Significant progress ...
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47. [Image] Field Electrochemical Measurements of Corrosion Characteristics of Materials in Hypersaline Geothermal Brine
A flow cell (with appropriate accessories) was developed for use in short-term testing of the corrosion behavior of materials in approximately 100{sup 0}C, hypersaline geothermal brine. The apparatus was ...Citation -
Permeabilities of 10.2 cm in length, 2.5 cm in diameter Kayenta (porosity, 20.7, +- 1.66%) and St. Peter (porosity, 13.6, +- 0.13%) sandstones to Magmamax No. 1 brine containing suspended solids were determined ...
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Two separate studies, involving advanced design and economic considerations for commercial geothermal power plants using liquid-dominated hydrothermal resources, are presented. In the first study, the ...
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50. [Image] Research on the Physical Properties of Geothermal Reservoir Rock. Quarterly Report, March 1978
A laboratory study of the P-wave velocity and electric Resistivity was undertaken on Cenozoic Volcanic Rocks collected from the Columbia Plateau Volcanic basin (C) and the Jemez Volcanic field (NM). Electric ...Citation