Gas recovery from gas hydrate bearing sediments by inhibitor or steam injection combined with depressurization

T. Kawamura, M. Ohtake, Y. Sakamoto, Y. Yamamoto, H. Haneda, T. Komai, S. Higuchi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

It is noted that natural gas hydrate exists in geological formations and constitutes a potentially large natural gas resource for the future. To make recovery of natural gas from hydrates commercially viable, hydrates must be dissociated in-situ. At the present stage, depressurization method is expected to be a main dissociation procedure because of its high energy profit ratio and so on. Whereas, there is a worry that some interruptions for gas production i.e. plugging by hydrate formation will occur. Also there is a demand to enhance the recovery ratio of natural gas. In this study, inhibitor injection method or steam injection method combined with depressurization have been examined using laboratory made methane hydrate bearing sediment. As a result, it becomes clear that the combined method contributed the fastest gas production rate compared to the other methods. The advantages of combined method become remarkable as higher pressure condition (smaller depressurization from initial pressure). The production rate of combined method become faster as the pressure is lower.

Original languageEnglish
Title of host publicationThe Proceedings of the 19th (2009) International OFFSHORE AND POLAR ENGINEERING CONFERENCE
Pages54-58
Number of pages5
Publication statusPublished - 2009 Dec 1
Externally publishedYes
Event19th (2009) International OFFSHORE AND POLAR ENGINEERING CONFERENCE - Osaka, Japan
Duration: 2009 Jun 212009 Jun 26

Publication series

NameProceedings of the International Offshore and Polar Engineering Conference
ISSN (Print)1098-6189
ISSN (Electronic)1555-1792

Other

Other19th (2009) International OFFSHORE AND POLAR ENGINEERING CONFERENCE
CountryJapan
CityOsaka
Period09/6/2109/6/26

Keywords

  • Core sample
  • Dissociation
  • Exploitation
  • Hydrate
  • Inhibitor
  • Natural gas
  • Steam

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Ocean Engineering
  • Mechanical Engineering

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  • Cite this

    Kawamura, T., Ohtake, M., Sakamoto, Y., Yamamoto, Y., Haneda, H., Komai, T., & Higuchi, S. (2009). Gas recovery from gas hydrate bearing sediments by inhibitor or steam injection combined with depressurization. In The Proceedings of the 19th (2009) International OFFSHORE AND POLAR ENGINEERING CONFERENCE (pp. 54-58). (Proceedings of the International Offshore and Polar Engineering Conference).