ν-X-type relative permeability curves for steam-water two-phase flows in fractured geothermal reservoirs

Noriaki Watanabe, Takuma Kikuchi, Takuya Ishibashi, Noriyoshi Tsuchiya

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

We explored appropriate relative permeability curves for steam-water two-phase flows in fractured geothermal reservoirs through steam-water and nitrogen gas-water two-phase flow experiments and simulations on a single fracture and multiple fractures in granite under confining stress. Based on our analysis, we proposed new relative permeability curves, which consist of ν- and X-type curves for single fractures. The ν-X-type relative permeability curves appear to reproduce Icelandic field data for steam and water relative permeabilities, which are difficult to reproduce by porous-rock-type relative permeability curves, indicating that the ν-X-type relative permeability curves are appropriate for steam-water two-phase flows in fractured geothermal reservoirs.

Original languageEnglish
Pages (from-to)269-279
Number of pages11
JournalGeothermics
Volume65
DOIs
Publication statusPublished - 2017 Jan 1

Keywords

  • Capillary pressure curve
  • Fractured geothermal reservoir
  • Relative permeability curve
  • Steam-water two-phase flow

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Geotechnical Engineering and Engineering Geology
  • Geology

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