Investigation for high concentration inhibitor injection into artificial methane hydrate bearing sediment

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

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

1 Citation (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 with, higher methanol concentration has been examined using laboratory made methane hydrate bearing sediment. As a result, it becomes clear that the higher concentration effectively contribute to the faster gas production rate. Whereas, dilution of methanol by pure water from hydrate dissociation were observed significantly, compared to the case of lower concentration.

Original languageEnglish
Title of host publicationProceedings of the 8th 2009 ISOPE Ocean Mining and Gas Hydrates Symposium, ISOPE OMS-2009
Pages119-123
Number of pages5
Publication statusPublished - 2009 Dec 1
Externally publishedYes
Event8th 2009 ISOPE Ocean Mining and Gas Hydrates Symposium, ISOPE OMS-2009 - Chennai, India
Duration: 2009 Sep 202009 Sep 24

Other

Other8th 2009 ISOPE Ocean Mining and Gas Hydrates Symposium, ISOPE OMS-2009
CountryIndia
CityChennai
Period09/9/2009/9/24

Keywords

  • Core sample
  • Dissociation
  • Exploitation
  • High concentration
  • Hydrate
  • Inhibitor
  • Natural gas

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology
  • Ocean Engineering

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