Reservoir-scale fracture permeability in the Dixie Valley, Nevada, geothermal field

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Wellbore image data recorded in six wells penetrating a geothermal reservoir associated with an active normal fault at Dixie Valley, Nevada, were used in conjunction with hydrologic tests and in situ stress measurements to investigate the relationship between reservoir productivity and the contemporary in situ stress field. The analysis of data from wells drilled into productive and non-productive segments of the Stillwater fault zone indicates that fractures must be both optimally oriented and critically stressed to have high measured permeabilities. Fracture permeability in all wells is dominated by a relatively small number of fractures oriented parallel to the local trend ... continued below

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8 p.

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Barton, C.A.; Zoback, M.D.; Hickman, S.; Morin, R. & Benoit, D. August 1, 1998.

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Wellbore image data recorded in six wells penetrating a geothermal reservoir associated with an active normal fault at Dixie Valley, Nevada, were used in conjunction with hydrologic tests and in situ stress measurements to investigate the relationship between reservoir productivity and the contemporary in situ stress field. The analysis of data from wells drilled into productive and non-productive segments of the Stillwater fault zone indicates that fractures must be both optimally oriented and critically stressed to have high measured permeabilities. Fracture permeability in all wells is dominated by a relatively small number of fractures oriented parallel to the local trend of the Stillwater Fault. Fracture geometry may also play a significant role in reservoir productivity. The well-developed populations of low angle fractures present in wells drilled into the producing segment of the fault are not present in the zone where production is not commercially viable.

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8 p.

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OSTI as DE98007211

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  • 23. Stanford workshop on geothermal reservoir engineering, Stanford, CA (United States), 26-28 Jan 1998

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  • Other: DE98007211
  • Report No.: DOE/ID/13463--T1-Pt.3
  • Report No.: CONF-980111--
  • Grant Number: FG07-96ID13463
  • Office of Scientific & Technical Information Report Number: 656554
  • Archival Resource Key: ark:/67531/metadc706981

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

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  • August 1, 1998

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  • Sept. 12, 2015, 6:31 a.m.

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  • Nov. 13, 2015, 10:59 p.m.

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Barton, C.A.; Zoback, M.D.; Hickman, S.; Morin, R. & Benoit, D. Reservoir-scale fracture permeability in the Dixie Valley, Nevada, geothermal field, article, August 1, 1998; United States. (digital.library.unt.edu/ark:/67531/metadc706981/: accessed April 25, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.