Interpretation of Interference Data from the Klamath Falls, Oregon Geothermal Resource

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Data from a seven week pressure interference test in the Klamath Falls, Oregon geothermal resource have been analyzed. The data indicate that productive wells are fed by a highly permeable fracture network and that the less permeable matrix blocks contribute significantly to the reservoir storage capacity. Detailed analysis of data from two wells is presented. Data from both of the wells yield a reservoir permeability-thickness (kh) of approximately 1.3x10{sup 6} md-ft and a storativity of 6.8x10{sup -3} ft/psi. The parameters ({lamda} and {omega}), which are determined by the distribution of permeability and storativity between the matrix and fractures, vary by ... continued below

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187-192

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Benson, S.M. December 15, 1983.

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Description

Data from a seven week pressure interference test in the Klamath Falls, Oregon geothermal resource have been analyzed. The data indicate that productive wells are fed by a highly permeable fracture network and that the less permeable matrix blocks contribute significantly to the reservoir storage capacity. Detailed analysis of data from two wells is presented. Data from both of the wells yield a reservoir permeability-thickness (kh) of approximately 1.3x10{sup 6} md-ft and a storativity of 6.8x10{sup -3} ft/psi. The parameters ({lamda} and {omega}), which are determined by the distribution of permeability and storativity between the matrix and fractures, vary by more than an order of magnitude. A sensitivity study shows that for these wells, the pressure transients are not very sensitive to the distribution of permeability and storativity between the fractures and matrix blocks. No hydrologic boundaries were detected during the test. This indicates that the fault which supplies hot water to the shallow hydrothermal system does not behave according to the cassical model of either a barrier or constant potential boundary.

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187-192

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  • Proceedings, Ninth Workshop Geothermal Reservoir Engineering, Stanford University, Stanford Calif., December 13-15, 1983

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  • Report No.: SGP-TR-74-22
  • Grant Number: AT03-80SF11459
  • Office of Scientific & Technical Information Report Number: 889587
  • Archival Resource Key: ark:/67531/metadc884503

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  • December 15, 1983

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  • Sept. 21, 2016, 2:29 a.m.

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  • Feb. 16, 2017, 7:01 p.m.

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Benson, S.M. Interpretation of Interference Data from the Klamath Falls, Oregon Geothermal Resource, article, December 15, 1983; Berkeley, California. (digital.library.unt.edu/ark:/67531/metadc884503/: accessed August 17, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.