Development of a geothermal resource in a fractured volcanic formation: Case study of the Sumikawa Geothermal Field, Japan. Final report, May 1, 1995--November 30, 1997

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The principal purpose of this case study of the Sumikawa Geothermal Field is to document and to evaluate the use of drilling logs, surface and downhole geophysical measurements, chemical analyses and pressure transient data for the assessment of a high temperature volcanic geothermal field. This comprehensive report describes the work accomplished during FY 1993-1996. A brief review of the geological and geophysical surveys at the Sumikawa Geothermal Field is presented (Section 2). Chemical data, consisting of analyses of steam and water from Sumikawa wells, are described and interpreted to indicate compositions and temperatures of reservoir fluids (Section 3). The drilling ... continued below

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452 p.

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Garg, S.K.; Combs, J. & Pritchett, J.W. July 1, 1997.

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Description

The principal purpose of this case study of the Sumikawa Geothermal Field is to document and to evaluate the use of drilling logs, surface and downhole geophysical measurements, chemical analyses and pressure transient data for the assessment of a high temperature volcanic geothermal field. This comprehensive report describes the work accomplished during FY 1993-1996. A brief review of the geological and geophysical surveys at the Sumikawa Geothermal Field is presented (Section 2). Chemical data, consisting of analyses of steam and water from Sumikawa wells, are described and interpreted to indicate compositions and temperatures of reservoir fluids (Section 3). The drilling information and downhole pressure, temperature and spinner surveys are used to determine feedzone locations, pressures and temperatures (Section 4). Available injection and production data from both slim holes and large-diameter wells are analyzed to evaluate injectivity/productivity indices and to investigate the variation of discharge rate with borehole diameter (Section 5). New interpretations of pressure transient data from several wells are discussed (Section 6). The available data have been synthesized to formulate a conceptual model for the Sumikawa Geothermal Field (Section 7).

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452 p.

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OSTI as DE98005563

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  • Other Information: PBD: Jul 1997

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  • Other: DE98005563
  • Report No.: DOE/ID/13407--T1
  • Report No.: MTFD-DTR--97-15806
  • Grant Number: AC07-94ID13407
  • DOI: 10.2172/615653 | External Link
  • Office of Scientific & Technical Information Report Number: 615653
  • Archival Resource Key: ark:/67531/metadc698013

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  • July 1, 1997

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  • Aug. 14, 2015, 8:43 a.m.

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  • May 16, 2016, 2:09 p.m.

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Garg, S.K.; Combs, J. & Pritchett, J.W. Development of a geothermal resource in a fractured volcanic formation: Case study of the Sumikawa Geothermal Field, Japan. Final report, May 1, 1995--November 30, 1997, report, July 1, 1997; United States. (digital.library.unt.edu/ark:/67531/metadc698013/: accessed December 12, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.