Improved energy recovery from geothermal reservoirs

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Numerical simulation methods are used to study how the exploitation of different horizons affects the behavior of a liquid-dominated geothermal reservoir. The reservoir model is a schematic representation of the Olkaria field in Kenya. The model consists of a two-phase vapor-dominated zone overlying the main liquid dominated reservoir. Four different cases were studied, with fluid produced from: 1) the vapor zone only, 2) the liquid zone only, 3) both zones and 4) both zones, but assuming lower values for vertical permeability and porosity. The results indicate that production from the shallow two-phase zone, although resulting in higher enthalpy fluids, may ... continued below

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Pages: 26

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Boedvarsson, G.S.; Pruess, K.; Lippmann, M. & Bjoernsson, S. June 1, 1981.

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Description

Numerical simulation methods are used to study how the exploitation of different horizons affects the behavior of a liquid-dominated geothermal reservoir. The reservoir model is a schematic representation of the Olkaria field in Kenya. The model consists of a two-phase vapor-dominated zone overlying the main liquid dominated reservoir. Four different cases were studied, with fluid produced from: 1) the vapor zone only, 2) the liquid zone only, 3) both zones and 4) both zones, but assuming lower values for vertical permeability and porosity. The results indicate that production from the shallow two-phase zone, although resulting in higher enthalpy fluids, may not be advantageous in the long run. Shallow production gives rise to a rather localized depletion of the reservoir, whereas production from deeper horizons may yield a more uniform depletion proces, if vertical permeability is sufficiently large.

Physical Description

Pages: 26

Notes

NTIS, PC A03/MF A01.

Source

  • 1981 SPE annual technical conference and exhibition, San Antonio, TX, USA, 4 Oct 1981

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  • Other: DE82001007
  • Report No.: LBL-12341
  • Report No.: CONF-811023-5
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 5988097
  • Archival Resource Key: ark:/67531/metadc1099402

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Office of Scientific & Technical Information Technical Reports

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

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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Creation Date

  • June 1, 1981

Added to The UNT Digital Library

  • Feb. 18, 2018, 3:59 p.m.

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  • March 29, 2018, 12:54 p.m.

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Boedvarsson, G.S.; Pruess, K.; Lippmann, M. & Bjoernsson, S. Improved energy recovery from geothermal reservoirs, article, June 1, 1981; United States. (digital.library.unt.edu/ark:/67531/metadc1099402/: accessed April 24, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.