Development of a dual-porosity model for vapor-dominated fractured geothermal reservoirs using a semi-analytical fracture/matrix interaction term Metadata

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Title

  • Main Title Development of a dual-porosity model for vapor-dominated fractured geothermal reservoirs using a semi-analytical fracture/matrix interaction term

Creator

  • Author: Zimmerman, Robert W.
    Creator Type: Personal
  • Author: Hadgu, Teklu
    Creator Type: Personal
  • Author: Bodvarsson, Gudmundur S.
    Creator Type: Personal

Contributor

  • Sponsor: United States. Department of Energy.
    Contributor Type: Organization

Publisher

  • Name: Lawrence Berkeley National Laboratory
    Place of Publication: Berkeley, California
    Additional Info: Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA
  • Name: University of California, Berkeley
    Place of Publication: Berkeley, California

Date

  • Creation: 1993-01-28

Language

  • English

Description

  • Content Description: A new type of dual-porosity model is being developed to simulate two-phase flow processes in fractured geothermal reservoirs. At this time it is assumed that the liquid phase in the matrix blocks remains immobile. By utilizing the effective compressibility of a two-phase water/steam mixture in a porous rock, flow within the matrix blocks can be modeled by a single diffusion equation. This equation in turn is replaced by a nonlinear ordinary differential equation that utilizes the mean pressure and mean saturation in the matrix blocks to calculate the rate of fluid flow between the matrix blocks and fractures. This equation has been incorporated into the numerical simulator TOUGH to serve as a source/sink term for computational gridblocks that represent the fracture system. The new method has been compared with solutions obtained using fully-discretized matrix blocks, on a problem involving a three-dimensional vapor-dominated reservoir containing an injection and a production well, and has been found to be quite accurate.
  • Physical Description: 279-284

Subject

  • Keyword: Geothermal Legacy

Source

  • Conference: Proceedings, eighteenth workshop on geothermal reservoir engineering, Stanford University, Stanford, CA, January 26-28, 1993

Collection

  • Name: Office of Scientific & Technical Information Technical Reports
    Code: OSTI

Institution

  • Name: UNT Libraries Government Documents Department
    Code: UNTGD

Resource Type

  • Article

Format

  • Text

Identifier

  • Report No.: SGP-TR-145-39
  • Grant Number: AC03-76SF00098
  • Office of Scientific & Technical Information Report Number: 888956
  • Archival Resource Key: ark:/67531/metadc885358