A Study of Production/Injection Data from Slim Holes and Large-Diameter Wells at the Okuaizu Geothermal Field, Tohoku, Japan

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Discharge from the Okuaizu boreholes is accompanied by in situ boiling. Analysis of cold-water injection and discharge data from the Okuaizu boreholes indicates that the two-phase productivity index is about an order of magnitude smaller than the injectivity index. The latter conclusion is in agreement with analyses of similar data from Oguni, Sumikawa, and Kirishima geothermal fields. A wellbore simulator was used to examine the effect of borehole diameter on the discharge capacity of geothermal boreholes with two-phase feedzones. Based on these analyses, it appears that it should be possible to deduce the discharge characteristics of largediameter wells using test ... continued below

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Renner, Joel Lawrence; Garg, Sabodh K. & Combs, Jim June 1, 2002.

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Discharge from the Okuaizu boreholes is accompanied by in situ boiling. Analysis of cold-water injection and discharge data from the Okuaizu boreholes indicates that the two-phase productivity index is about an order of magnitude smaller than the injectivity index. The latter conclusion is in agreement with analyses of similar data from Oguni, Sumikawa, and Kirishima geothermal fields. A wellbore simulator was used to examine the effect of borehole diameter on the discharge capacity of geothermal boreholes with two-phase feedzones. Based on these analyses, it appears that it should be possible to deduce the discharge characteristics of largediameter wells using test data from slim holes with two-phase feeds.

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  • Report No.: INEEL/EXT-02-01429
  • Grant Number: DE-AC07-99ID-13727
  • DOI: 10.2172/910749 | External Link
  • Office of Scientific & Technical Information Report Number: 910749
  • Archival Resource Key: ark:/67531/metadc882155

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Office of Scientific & Technical Information Technical Reports

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  • June 1, 2002

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  • Sept. 22, 2016, 2:13 a.m.

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  • Dec. 15, 2016, 3:03 p.m.

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Renner, Joel Lawrence; Garg, Sabodh K. & Combs, Jim. A Study of Production/Injection Data from Slim Holes and Large-Diameter Wells at the Okuaizu Geothermal Field, Tohoku, Japan, report, June 1, 2002; [Idaho Falls, Idaho]. (digital.library.unt.edu/ark:/67531/metadc882155/: accessed October 18, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.