Modification of permeability model and history matching of laboratory-scale experiment for dissociation process of methane hydrate: Part 2 - Numerical study for estimation of permeability in methane hydrate reservoir

Yasuhide Sakamoto, Takeshi Komai, Taro Kawamura, Hideki Minagawa, Norio Tenma, Tsutomu Yamaguchi

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

In this study, for the purpose of history matching a laboratory-scale experiment dissociation of methane hydrate (MH) by hot-water injection, we introduced the MH growth rate into the simulator and modified the numerical model. In addition, we extended the MH phase in the numerical model to a 2-component system by modeling the pore space occupied by MH. Absolute permeability was formulated for an MH 2-component system, and the relative permeability model was also modified as a function of sand grain diam and temperature in addition to MH saturation. As a result, the calculated temperature distribution and gas production behavior during MH dissociation sufficiently agreed with the experimental results. Further, it was found that this developed simulator could reproduce permeability characteristics, associated with both MH formation and dissociation.

Original languageEnglish
Pages (from-to)57-66
Number of pages10
JournalInternational Journal of Offshore and Polar Engineering
Volume17
Issue number1
Publication statusPublished - 2007 Mar 1
Externally publishedYes

Keywords

  • Hot-water injection
  • Marine sediments dissociation
  • Methane hydrate
  • Permeability
  • Simulation
  • Thermal stimulation method

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Mechanical Engineering
  • Ocean Engineering

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