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A history of hot dry rock geothermal energy systems
Journal of Volcanology and Geothermal Research, 1983Abstract This is a short history, so far as it can now be assembled, of early speculations and observations concerning the existence and origin of natural heat in the earth's crust; of some of the many methods proposed to extract and use it; and of recent investigations designed to develop and demonstrate such methods. It is probably only the preface
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Monitoring and interpretation of seismic observations in hot dry rock geothermal energy systems
Geothermics, 1987Abstract As the value of microseismic monitoring during development of HDR reservoirs is already proven, the discussion group concentrated on assessing what further improvements might be made. They suggested improvements both to the receivers and to the methods of analysis, with particular reference to the derivation of different source mechanisms ...
J Wohlenberg, H Keppler
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Hot dry rock geothermal systems: Geochemical applications of transient field experiments
Geothermics, 1987Abstract Although geochemical investigations of Hot Dry Rock geothermal reservoirs may be useful to both their short and long term operation, most applications of geochemistry require a knowledge of the chemical processes occurring in the various parts of the reservoir during circulation.
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Journal of Geophysical Research: Solid Earth, 1979
Because the lifetime of and heat extraction rate from a hot dry rock (HDR) geothermal reservoir can be substantially controlled by the in situ rock thermal conductivity, information concerning the dependence of thermal conductivity on moisture content and temperature is important for proper design and management of the reservoir.
W. L. Sibbitt +2 more
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Because the lifetime of and heat extraction rate from a hot dry rock (HDR) geothermal reservoir can be substantially controlled by the in situ rock thermal conductivity, information concerning the dependence of thermal conductivity on moisture content and temperature is important for proper design and management of the reservoir.
W. L. Sibbitt +2 more
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Journal of Volcanology and Geothermal Research, 1983
Abstract Two hot dry rock (HDR) geothermal energy reservoirs have been created by hydraulic fracturing of Precambrian granitic rock between two wells on the west flank of the Valles Caldera in the Jemez Mountains of northern New Mexico. Heat is extracted by injecting water into one well, flowing it through the fractured region and recovering the ...
C.O. Grigsby +6 more
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Abstract Two hot dry rock (HDR) geothermal energy reservoirs have been created by hydraulic fracturing of Precambrian granitic rock between two wells on the west flank of the Valles Caldera in the Jemez Mountains of northern New Mexico. Heat is extracted by injecting water into one well, flowing it through the fractured region and recovering the ...
C.O. Grigsby +6 more
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International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, 1989
Abstract Monitoring microseismic emissions during fracturing and circulation experiments at the Camborne School of Mines 2 km deep hot dry rock geothermal project has been carried out over the past 5 yr. These microseismic locations provide the only information on the position of the stimulated region within the granite rock mass.
A.S.P. Green, R. Baria, R. Jones
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Abstract Monitoring microseismic emissions during fracturing and circulation experiments at the Camborne School of Mines 2 km deep hot dry rock geothermal project has been carried out over the past 5 yr. These microseismic locations provide the only information on the position of the stimulated region within the granite rock mass.
A.S.P. Green, R. Baria, R. Jones
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Heat transfer by water flow in rock fractures and the application to hot dry rock geothermal systems
International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, 1993The heat transfer coefficient is an important fundamental parameter which is essential for numerical analysis of hot dry geothermal energy extraction systems. An investigation on joint rock-water heat transfer was successfully carried out using a test set-up for hydro-thermo-mechanical experiments on rock samples from the Carnmenellis granite.
J. Zhao, C.P. Tso
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Physics of Fluids
A deeper understanding of interaction dynamics between hydraulic and natural fractures remains essential, especially for finite-scale natural fractures. In this paper, a three-dimensional hydraulic fracturing model is developed by using the discrete lattice method, which can simulate meticulously the dynamic evolution of both hydraulic and natural ...
Liuke Huang +6 more
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A deeper understanding of interaction dynamics between hydraulic and natural fractures remains essential, especially for finite-scale natural fractures. In this paper, a three-dimensional hydraulic fracturing model is developed by using the discrete lattice method, which can simulate meticulously the dynamic evolution of both hydraulic and natural ...
Liuke Huang +6 more
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Changes in P wave velocity during operation of a hot dry rock geothermal system
Journal of Geophysical Research: Solid Earth, 1981P wave arrival times have been picked on seismograms recorded during two dual well seismic experiments, separated in time by one year, that were carried out in the Los Alamos Scientific Laboratory Hot Dry Rock Geothermal Energy Reservoir. Average in situ P wave velocity is computed from arrival times measured along segments of the borehole.
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