Results 161 to 170 of about 316,691 (205)

Drilling for hot dry rock reservoirs

Geothermics, 1987
Abstract The drilling group evaluated techniques suitable for drilling inclined boreholes, of controlled geometry, to reach temperatures of 200–250°C in crystalline rock. They concluded that there is no fundamental reason why holes for HDR projects cannot be drilled and completed successfully using techniques already available, and that further ...
AJ Beswick, G Baron, JD Garnish
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The U.S. hot dry rock project

Geothermics, 1987
Abstract Early attempts to hydraulically fracture and connect two wells drilled at the Hot Dry Rock (HDR) site at Fenton Hill in New Mexico produced a large volume of fractured rock, but no connection. Microearthquakes triggered by fracturing indicated that the stimulated rock zones grew in unexpected directions.
John T Whetten, Bert R Dennis, Donald S Dreesen, Leigh S House, Hugh D Murphy, Bruce A Robinson, Morton C Smith   +6 more
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Geothermal reservoirs and hot dry rock systems

1999
Most geothermal reservoirs and hot dry rock (HDR) systems are located in fractured low porosity geological formations. In such settings, fractures provide conduits for fluid flow through such rocks. Therefore fractures, either natural or those artificially created, are important for the successful operation of geothermal reservoirs and HDR systems.
B. B. S. Singhal, R. P. Gupta
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Heat extraction from hot, dry, crustal rock

pure and applied geophysics, 1978
Natural heat stored in the earth’s interior represents an essentially inexhaustible energy supply which, at usefully high temperatures, is accessible at practical drilling depths from almost anywhere on the earth’s land surface. The problems of extracting and using this heat are those of engineering and economics, and can be expected to vary with the ...
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Mining Geothermal Energy From Hot Dry Rock

Journal of Technical Topics in Civil Engineering, 1984
Geothermal energy is commonly considered to be available only in areas characterized by hot springs and geysers. However, the rock of the earth is hot at accessible depths everywhere, and this energy source is present beneath the surface in almost any location.
Roland A. Pettitt, Naomi M. Becker
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COMPLETION OF HOT DRY ROCK GEOTHERMAL WELL SYSTEMS

Proceedings of SPE Annual Technical Conference and Exhibition, 1979
Abstract In the hot dry rock (HDR) concept of extracting geothermal energy, as developed by the Los Alamos Scientific Laboratory (LASL), a manmade geothermal reservoir is created by drilling a deep hole into relatively impermeable hot rocks, creating a large surface area for heat transfer by hydraulic fracturing ...
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Hot dry rock research experiments at Fjällbacka, Sweden

Geothermics, 1999
A number of in-situ experiments, aimed at investigating geological, hydrogeological and hydromechanical aspects of HDR reservoir development were carried out at the Fjallbacka test site in western Sweden between 1984 and 1995. By means of hydraulic stimulations, a roughly horizontal reservoir that connects two 500 m deep wells was created. An open-loop
Thomas Wallroth, Thomas Eliasson, Ulf Sundquist   +2 more
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High-Temperature Slurry System for Dry Hot Rock

Chemistry and Technology of Fuels and Oils, 2017
Dry hot rock (DHR) is a kind of rock without water or steam lying 2-6 km underground with a temperature of 150-650°C. Domestic DHR at 3.5-7.5 km depth had a temperature of 150-250°C with a total energy of 6.3· 1024J, which was 1320 times the total energy consumption of China in 2010 assuming 2% of available exploration volume. Mixing of H2S, H2SO3, etc.
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Hot dry rock: a new geothermal energy source

Energy, 1978
Abstract A project being conducted by the Los Alamos Scientific Laboratory is attempting to demonstrate the technical and economic feasibility of extracting energy from the hot, dry rock geothermal resource. The system being tested is composed of two deep boreholes drilled into hot, impermeable rock and connected by a hydraulically produced fracture.
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The Future of Hot Dry Rock Geothermal Energy

2012
As detailed in preceding chapters, the technical feasibility of HDR geothermal energy was clearly demonstrated at Fenton Hill, with the testing of two separate confined reservoirs. The major task now in view is moving this revolutionary new technology to its appropriate place in the world’s energy supply mix.
Donald W. Brown, David V. Duchane, Grant Heiken, Vivi Thomas Hriscu   +3 more
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