Diagenetic change of residual gas in mudstones
| Project/Area Number |
24540484
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Geology
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| Research Institution | Hokkaido University |
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Principal Investigator |
SUZUKI Noriyuki 北海道大学, 理学(系)研究科(研究院), 教授 (00144692)
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| Project Period (FY) |
2012-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2014: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2013: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2012: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
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| Keywords | シェールガス / 残留ガス / メタン / 天然ガス / 四万十帯 / 続成作用 / 変成作用 / 基礎試錐 / 変成 |
|---|
| Outline of Final Research Achievements |
Concentration and compositional changes of hydrocarbon gases in shale rocks and metapelites during diagenesis and metamorphism were revealed by this study. The shale rocks and metapelites were collected from borehole MITI-Mishima and outcrops in Shimanto belt, Chichibu belt, and Sanbagawa metamorphic belt in Shikoku region. Concentration of residual methane begins to increase when shale rock porosity reaches about 5%, suggesting a significant retention of methane in shale rocks. The highest concentration of residual methane corresponds to maturity levels of vitrinite refrectance (VR)=2 to 3 % (maximum heated temperature=200 to 250ºC). Residual methane concentration significantly decreases in the stage of metamorphism suggesting the graphitization of methane. The maturity level of VR=2 to 3 % is the main maturation stage for the formation of shale gas deposit. Several gas seepages observed in Shimanto belt suggest the formation of shale gas deposits in accretionary prism.
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Report
(4 results)
Research Products
(31 results)
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[Journal Article] In-reservoir fractionation and the accumulation of oil and condensates in the Surma basin, NE Bangladish.2014
Author(s)
Hossain, Md. A., Suzuki, N., Matsumoto, K., Sakamoto, R., Takeda, N.
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Journal Title
Journal of Petroleum Geology
Volume: 37
Issue: 3
Pages: 269-286
DOI
Related Report
Peer Reviewed / Acknowledgement Compliant
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[Presentation] Origin of crude oil and condensates from Surma basin, north-eastern Bangladesh.2013
Author(s)
Hossain,MD.A.,Suzuki,N.,Matsumoto,K.,Sato,N.,Takeda,N.
Organizer
平成25年度石油技術協会春季講演会
Place of Presentation
国立オリンピック記念青少年総合センター(東京都)
Related Report
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[Presentation] Origin of desorbed coalbed gas from middle to late Miocene coals in Kutei Basin, Indonesia.2013
Author(s)
Wicaksono, A.B.,Suzuki,N.,Saito,H.,Takahashi,K.,Sosrowidjojo,I.B.
Organizer
平成25年度石油技術協会春季講演会
Place of Presentation
国立オリンピック記念青少年総合センター(東京都)
Related Report
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