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U.S. Department of Energy
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Method of extracting heat from dry geothermal reservoirs

Patent ·
OSTI ID:4304847
Hydraulic fracturing is used to interconnect two or more holes that penetrate a previously dry geothermal reservoir, and to produce within the reservoir a sufficiently large heat-transfer surface so that heat can be extracted from the reservoir at a usefully high rate by a fluid entering it through one hole and leaving it through another. Introduction of a fluid into the reservoir to remove heat from it and establishment of natural (unpumped) convective circulation through the reservoir to accomplish continuous heat removal are important and novel features of the method. (auth)
Research Organization:
Originating Research Org. not identified
NSA Number:
NSA-29-031498
Assignee:
to United States Atomic Energy Commission
Patent Number(s):
US 3786858
OSTI ID:
4304847
Country of Publication:
United States
Language:
English

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