Forced Geoheat Extraction from Sheet-Like Fluid Conductors

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Geoheat is now being extracted for electrical power generation from natural hydrothermal resources in thermally active regions on the basis of free flowing boreholes. This type of operation may be termed as free geoheat production. The Reykjavik District Heating System is a low-temperature operation where large scale resource stimulation by borehole pumping is being applied. These free and stimulated production methods are based on the presence of natural fluid conducting openings in the resource formations and on a natural recharge of the withdrawn fluid. One can also envision forced geoheat extraction systems (FGES) with an artificial recharge of the heat ... continued below

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52-60

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Bodvarsson, G. & Hanson, J.M. December 1, 1976.

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Description

Geoheat is now being extracted for electrical power generation from natural hydrothermal resources in thermally active regions on the basis of free flowing boreholes. This type of operation may be termed as free geoheat production. The Reykjavik District Heating System is a low-temperature operation where large scale resource stimulation by borehole pumping is being applied. These free and stimulated production methods are based on the presence of natural fluid conducting openings in the resource formations and on a natural recharge of the withdrawn fluid. One can also envision forced geoheat extraction systems (FGES) with an artificial recharge of the heat extracting fluid which flows to some extent through artificial openings created by hydraulic fracturing or other pressurizing operations. For the operation of such systems to be successful, the openings have to provide adequate contact areas or contact volumes between the fluid and the rock such that a sufficient amount of heat can be extracted from the hot formations. In this paper, we will discuss a number of economical and physical aspects of FGES with emphasis on heat extraction from sheetlike natural fluid conductors in volcanic formations such as sufficiently open (conducting) fault zones, dikes and formation contacts. We envision applications of our results in some regions in the western U. S., the Pacific Northwest, in particular. 5 figs., 2 tabs., 3 refs.

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52-60

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  • Proceedings Second Workshop Geothermal Reservoir Engineering, Stanford University, Stanford, Calif., December 1-3, 1976

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  • Report No.: SGP-TR-20-10
  • Grant Number: E043-326-PA-50
  • Office of Scientific & Technical Information Report Number: 887311
  • Archival Resource Key: ark:/67531/metadc886259

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • December 1, 1976

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  • Sept. 21, 2016, 2:29 a.m.

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  • Nov. 28, 2016, 6 p.m.

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Bodvarsson, G. & Hanson, J.M. Forced Geoheat Extraction from Sheet-Like Fluid Conductors, article, December 1, 1976; United States. (digital.library.unt.edu/ark:/67531/metadc886259/: accessed August 20, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.