Well Test Analysis in Naturally Fissured, Geothermal Reservoirs with Fracture Skin

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Mineral deposition or alteration is commonly found at fracture-block interfaces is fissured, geothermal reservoirs. In response to pressure reduction in the fissures such mineralization, if less permeable than the matrix rock, will retard the flow of fluid from the blocks to the fissures and is termed fracture skin in this paper. The problem of fluid flow to a production well in a double-porosity reservoir with fracture skin was analyzed theoretically. One of the findings of the analysis was that fully transient block-to-fissure flow can be approximated by pseudo-steady state flow if fracture skin permeability is sufficiently low. Type curves generated ... continued below

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175-180

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Moench, A.F. December 15, 1983.

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Mineral deposition or alteration is commonly found at fracture-block interfaces is fissured, geothermal reservoirs. In response to pressure reduction in the fissures such mineralization, if less permeable than the matrix rock, will retard the flow of fluid from the blocks to the fissures and is termed fracture skin in this paper. The problem of fluid flow to a production well in a double-porosity reservoir with fracture skin was analyzed theoretically. One of the findings of the analysis was that fully transient block-to-fissure flow can be approximated by pseudo-steady state flow if fracture skin permeability is sufficiently low. Type curves generated by numerical inversion of Laplace transform solutions are used to cooroborate the results of a finite-difference model of steam transport to a well in a naturally fissured, geothermal reservoir with fracture skin.

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175-180

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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-74-20
  • Grant Number: AT03-80SF11459
  • Office of Scientific & Technical Information Report Number: 889583
  • Archival Resource Key: ark:/67531/metadc873384

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  • December 15, 1983

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  • Sept. 21, 2016, 2:29 a.m.

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  • Jan. 11, 2018, 2:01 p.m.

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Moench, A.F. Well Test Analysis in Naturally Fissured, Geothermal Reservoirs with Fracture Skin, article, December 15, 1983; Menlo Park, California. (digital.library.unt.edu/ark:/67531/metadc873384/: accessed September 23, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.