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in creator/contributor: "Hendron, R.H."

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Hot dry rock energy project

A proof-of-concept experimental project by the Los Alamos Scientific Laboratory endeavors to establish the feasibility of exploitation of the thermal energy contained in the earth's crust where such energy and a transporting fluid have not been juxtaposed in nature. A region of high heat flow and apparently unfaulted basement rock formation was selected. Two boreholes, drilled to a total depth of about 3 km (10,000 ft) and penetrating about 2.5 km (7500 ft) into the Precambrian formation, to a … more

Date: January 1, 1977

Creator: Hendron, R.H.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Energy extraction operations: some preliminary results

An experimental project being conducted by the Los Alamos Scientific Laboratory (LASL) has extracted thermal energy from Precambrian granitic rock by injection and circulating water through fractured zones or reservoirs. Two boreholes were drilled to depths of about 3 km (10,000 ft) in a location selected for high heat flow and an apparent lack of faulting. Bottom-hole temperature was 205/sup 0/C (400/sup 0/F). The holes were connected at depth by hydraulic fracturing to form a flow path and he… more

Date: January 1, 1979

Creator: Hendron, R.H.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Energy from hot dry rock

The Hot Dry Rock Geothermal Energy Program is described. The system, operation, results, development program, environmental implications, resource, economics, and future plans are discussed. (MHR)

Date: January 1, 1979

Creator: Hendron, R.H.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Hot Dry Rock at Fenton Hill, USA

The Hot Dry Rock Geothermal Energy Project began in the early 1970's with the objective of developing a technology to make economically available the large ubiquitous thermal energy of the upper earth crust. The program, operated by the Los Alamos National Laboratory, has been funded by the Department of Energy (and its predecessors) and for a few years with participation by West Germany and Japan. An energy reservoir was accessed by drilling and hydraulically fracturing in the Precambrian base… more

Date: January 1, 1988

Creator: Hendron, R.H.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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The US Hot Dry Rock project

The Hot Dry Rock geothermal energy project began in the early 1970's with the objective of developing a technology to make economically available the large ubiquitous thermal energy of the upper earth crust. The program has been funded by the Department of Energy (and its predecessors) and for a few years with participation by West Germany and Japan. An energy reservoir was accessed by drilling and hydraulically fracturing in the precambrian basement rock outside the Valles Caldera of north-cen… more

Date: January 1, 1987

Creator: Hendron, R. H.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Hot dry rock energy extraction operations

Progress in the establishment of a two-hole and connecting-fracture system on the southwest flank of the Valles Caldera in north-central New Mexico is summarized. Piping and equipment to complete the energy extraction system, the initial operation, and some brief and early interpretations of results are reported. To date the loop has run 52 days with several minor interruptions of short duration and 3 longer ones of up to 14 h. (JGB)

Date: January 1, 1978

Creator: Hendron, R.H.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Power from the hot-dry-rock geothermal resource

The history of the development of the first HDR reservoir at the Fenton Hill site is presented. Particulars on the surface piping and data collection system are described, as well as a brief historical account of the individual experiments. Field research results at Fenton Hill are described. From the research, it has been learned that the geothermal reservoir growth is due in large part to pressurization and thermophysical effects. The impedance to flow along the fractures within the reservoir… more

Date: January 1, 1981

Creator: Becker, N. M.; Pettitt, R. A. & Hendron, R. H.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Hot dry rock geothermal energy development program: Annual operating plan, fiscal year 1989

With completion of the repairs of EE-2 wellbore in FY88, the major effort in FY89 will be directed toward the remaining preparations for the Long-Term Flow Test (LTFT) now scheduled to begin in September 1990. Procurement of components and equipment and installation of the surface system will continue through this and the next fiscal year to be ready for the LTFT in September 1990. Reservoir experiments will consist of pressurization and flow tests to establish further characteristics of the Ph… more

Date: September 1, 1988

Creator: Franke, P.R.; Hendron, R.H. & Murphy, H.D.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Fracturing operations in a dry geothermal reservoir

Fracturing operations at the Fenton Hill, New Mexico, Hot Dry Rock (HDR) Geothermal Test Site initiated unique developments necessary to solve problems caused by an extremely harsh downhole environment. Two deep wells were drilled to approximately 15,000 ft (4.6 km); formation temperatures are in excess of 600/sup 0/F (315/sup 0/C). The wells were drilled during 1979 to 1981, inclined at 35 degrees, one above the other, and directionally drilled in an azimuthal direction orthogonal to the least… more

Date: January 1, 1983

Creator: Rowley, J. C.; Pettitt, R. A.; Hendron, R. H.; Sinclair, A. R. & Nicholson, R. W.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Hot Dry Rock Geothermal Energy Development Program

During Fiscal Year 1987, emphasis in the Hot Dry Rock Geothermal Energy Development Program was on preparations for a Long-Term Flow Test'' of the Phase II'' or Engineering'' hot dry rock energy system at Fenton Hill, New Mexico. A successful 30-day flow test of the system during FY86 indicated that such a system would produce heat at a temperature and rate that could support operation of a commercial electrical power plant. However, it did not answer certain questions basic to the economics of… more

Date: December 1, 1989

Creator: Smith, M. C.; Hendron, R. H.; Murphy, H. D. & Wilson, M. G.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

ICFT: An initial closed-loop flow test of the Fenton Hill Phase II HDR reservoir

A 30-day closed-loop circulation test of the Phase II Hot Dry Rock reservoir at Fenton Hill, New Mexico, was conducted to determine the thermal, hydraulic, chemical, and seismic characteristics of the reservoir in preparation for a long-term energy-extraction test. The Phase II heat-extraction loop was successfully tested with the injection of 37,000 m/sup 3/ of cold water and production of 23,300 m/sup 3/ of hot water. Up to 10 MW/sub t/ was extracted when the production flow rate reached 0.01… more

Date: February 1, 1989

Creator: Dash, Z. V.; Aguilar, R. G.; Dennis, B. R.; Dreesen, D. S.; Fehler, M. C.; Hendron, R. H. et al.

Item Type: Report

Partner: UNT Libraries Government Documents Department