Origins of hydrocarbons in the Sagara oil field, central Japan


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Please use this identifier to cite or link to this item:http://hdl.handle.net/2115/29654

Title:	Origins of hydrocarbons in the Sagara oil field, central Japan
Authors:	Toki, Tomohiro Browse this author
	Gamo, Toshitaka Browse this author
	Tsunogai, Urumu Browse this author →KAKEN DB
Keywords:	Sagara oil field
	SDP
	hydrocarbons
	free gas
	in situ fluid
	carbon isotope
	thermogenic origin
	microbial origin
Issue Date:	Sep-2006
Publisher:	Blackwell Publishing
Journal Title:	Island Arc
Volume:	15
Issue:	3
Start Page:	285
End Page:	291
Publisher DOI:	10.1111/j.1440-1738.2006.00528.x
Abstract:	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.
Rights:	The definitive version is available at www.blackwell-synergy.com
Relation:	http://www.blackwell-synergy.com
Type:	article (author version)
URI:	http://hdl.handle.net/2115/29654
Appears in Collections:	理学院・理学研究院 (Graduate School of Science / Faculty of Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 土岐知弘

OAI-PMH ( junii2 , jpcoar_1.0 )

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