Experimental Study on Physical Phenomena in Methane Hydrate Reservoir and Its Gas Production Behavior during Hot Water Injection Process-Estimation of Permeability in Methane Hydrate Reservoir, Part2-

DOI Web Site 5 Citations 8 References
  • SAKAMOTO Yasuhide
    National Institute of Advanced Industrial Science and Technology (AIST), Institute for Geo-Resources and Environment, Geo-Environment Analysis and Evaluation Group
  • KOMAI Takeshi
    National Institute of Advanced Industrial Science and Technology (AIST), Institute for Geo-Resources and Environment, Geo-Environment Analysis and Evaluation Group
  • KAWABE Yoshishige
    National Institute of Advanced Industrial Science and Technology (AIST), Institute for Geo-Resources and Environment, Geo-Environment Analysis and Evaluation Group
  • KAWAMURA Taro
    National Institute of Advanced Industrial Science and Technology (AIST), Energy Technology Research Institute
  • TENMA Norio
    National Institute of Advanced Industrial Science and Technology (AIST), Institute for Geo-Resources and Environment, Geo-Energy and Environment Research Group
  • YAMAGUCHI Tsutomu
    National Institute of Advanced Industrial Science and Technology (AIST), Institute for Geo-Resources and Environment

Bibliographic Information

Other Title
  • 熱水圧入法における貯留層内現象ならびにガス産出挙動に関する室内実験研究　ＩＩ　　メタンハイドレート貯留層の浸透率評価に関する研究
  • 熱水圧入法における貯留層内現象ならびにガス産出挙動に関する室内実験研究--メタンハイドレート貯留層の浸透率評価に関する研究(第2報)
  • ネッスイ アツニュウホウ ニ オケル チョリュウソウ ナイ ゲンショウ ナラビニ ガス サンシュツ キョドウ ニ カンスル シツナイ ジッケン ケンキュウ メタンハイドレート チョリュウソウ ノ シントウリツ ヒョウカ ニ カンスル ケンキュウ ダイ2ホウ
  • -Estimation of Permeability in Methane Hydrate Reservoir, Part2-
  • －メタンハイドレート貯留層の浸透率評価に関する研究（第2報）－

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Description

Methane hydrate is one of the potential resources of natural gas in the near future, because a large amount of reservoir exists in marine sediments and permafrost regions worldwide. It is very important to investigate physical phenomena in hydrate reservoirs, especially for developing an extraction system for gas hydrates, and in considering the environmental impacts by the development.<BR>In this study, we carried out an experimental research on hot water injection process as one of the thermal stimulation methods, using a special-type apparatus designed for simulating hydrate reservoir. As a result of the experiments, it was found that the dissociation process by hot water injection consisted of the following four stages, such as (1) displacement of free methane gas due to water injection, (2) additional hydrate formation at downstream zone due to migration of dissociated gas and water, (3) actual dissociation, (4) completion of dissociation. In addition, the permeability of the hydrate reservoir was observed as a function of time that, tended to decrease during the additional hydrate formation period and increase during the actual hydrate dissociation period. Based on experimental data of temperature distribution during dissociation, the reservoir could be divided into three zones from upstream edge, and dissociation zone was extremely narrow area depending on the dissociation rate. Furthermore, we discussed the effect of injected water temperature, reservoir pressure and hydrate saturation on the movement of dissociation front and gas production behavior.

Journal

  • Shigen-to-Sozai

    Shigen-to-Sozai 121 (2/3), 44-50, 2005

    The Mining and Materials Processing Institute of Japan

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