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

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 proceeding › Conference contribution

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 language	English
Title of host publication	Proceedings of the 8th 2009 ISOPE Ocean Mining and Gas Hydrates Symposium, ISOPE OMS-2009
Pages	119-123
Number of pages	5
Publication status	Published - 2009 Dec 1
Externally published	Yes
Event	8th 2009 ISOPE Ocean Mining and Gas Hydrates Symposium, ISOPE OMS-2009 - Chennai, India Duration: 2009 Sep 20 → 2009 Sep 24

Other

Other	8th 2009 ISOPE Ocean Mining and Gas Hydrates Symposium, ISOPE OMS-2009
Country	India
City	Chennai
Period	09/9/20 → 09/9/24

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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Cite this

Investigation for high concentration inhibitor injection into artificial methane hydrate bearing sediment. / Kawamura, T.; Ohtake, M.; Yamamoto, Y.; Haneda, H.; Sakamoto, Y.; Komai, Takeshi; Higuchi, S.

Proceedings of the 8th 2009 ISOPE Ocean Mining and Gas Hydrates Symposium, ISOPE OMS-2009. 2009. p. 119-123.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Kawamura, T, Ohtake, M, Yamamoto, Y, Haneda, H, Sakamoto, Y, Komai, T & Higuchi, S 2009, Investigation for high concentration inhibitor injection into artificial methane hydrate bearing sediment. in Proceedings of the 8th 2009 ISOPE Ocean Mining and Gas Hydrates Symposium, ISOPE OMS-2009. pp. 119-123, 8th 2009 ISOPE Ocean Mining and Gas Hydrates Symposium, ISOPE OMS-2009, Chennai, India, 09/9/20.

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title = "Investigation for high concentration inhibitor injection into artificial methane hydrate bearing sediment",

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.",

keywords = "Core sample, Dissociation, Exploitation, High concentration, Hydrate, Inhibitor, Natural gas",

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T1 - Investigation for high concentration inhibitor injection into artificial methane hydrate bearing sediment

AU - Kawamura, T.

AU - Ohtake, M.

AU - Yamamoto, Y.

AU - Haneda, H.

AU - Sakamoto, Y.

AU - Komai, Takeshi

AU - Higuchi, S.

PY - 2009/12/1

Y1 - 2009/12/1

N2 - 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.

AB - 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.

KW - Core sample

KW - Dissociation

KW - Exploitation

KW - High concentration

KW - Hydrate

KW - Inhibitor

KW - Natural gas

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