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Title
  • en Origins of hydrocarbons in the Sagara oil field, central Japan
Creator
    • en Toki, Tomohiro
    • en Gamo, Toshitaka
Accessrights open access
Rights
  • en The definitive version is available at www.blackwell-synergy.com
Subject
  • Other en Sagara oil field
  • Other en SDP
  • Other en hydrocarbons
  • Other en free gas
  • Other en in situ fluid
  • Other en carbon isotope
  • Other en thermogenic origin
  • Other en microbial origin
  • NDC 438.2
Description
  • Abstract en We collected free-gas and in situ fluid samples up to a depth of 200.6 m from the Sagara oil field, central Japan (34°44′N, 138°15′E), during the Sagara Drilling Program (SDP) and measured the concentrations and stable carbon isotopic compositions of CH4 and C2H6 in the samples. A combination of the CH4/C2H6 ratios with the carbon isotope ratios of methane indicates that the hydrocarbon gases are predominantly of thermogenic origin at all depths. The isotope signature of hydrocarbon gases of δ13CCH4 < δ13CC2H6 suggests that these gases in the Sagara oil field are not generated by polymerization, but by the decomposition of organic materials.
Publisher en Blackwell Publishing
Date
    Issued2006-09
Language
  • eng
Resource Type journal article
Version Type AM
Identifier HDL http://hdl.handle.net/2115/29654
Relation
  • URI http://www.blackwell-synergy.com
  • isVersionOf DOI https://doi.org/10.1111/j.1440-1738.2006.00528.x
Journal
    • PISSN 1038-4871
      • en Island Arc
      • Volume Number15 Issue Number3 Page Start285 Page End291
File
Oaidate 2023-07-26