Molecular and intramolecular isotope geochemistry of natural gases from the Woodford Shale, Arkoma Basin, Oklahoma

doi:10.1016/j.gca.2019.04.020

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	Molecular and intramolecular isotope geochemistry of natural gases from the Woodford Shale, Arkoma Basin, Oklahoma
	Liu, Changjie 1; Liu, Peng 1,3; McGovern, Gregory P.2; Horita, Juske 1
刊名	GEOCHIMICA ET COSMOCHIMICA ACTA
	2019-06-15
卷号	255 页码:188-204
关键词	Shale gas geochemistry position-specific isotope water and propane exchange
ISSN号	0016-7037
DOI	10.1016/j.gca.2019.04.020
英文摘要	A combined bulk and position-specific isotope study was conducted on natural gases collected from an unconventional gas field in the Late-Devonian to Early Mississippian Woodford Shale in the southwestern Arkoma Basin in Oklahoma. The set of natural gases records a hitherto underreported case, where gases become wetter with decreasing isotope compositions in an early stage of maturation. A first dataset of position-specific isotope compositions of propane with demonstrated accuracy and precision show that while the bulk delta H-2 values of propane increased by 30 parts per thousand with maturity, position-specific hydrogen isotope deviations of propane (Delta(2-1)) increased by 80 parts per thousand. Position-specific delta H-2 values showed that delta H-2 values of the central H in propane increased by 70 parts per thousand with maturity, but those of terminal H in propane remained constant. This contrasting behavior could have resulted from the hydrogen isotope exchange between shale water and propane with a half-time of the center H, varying strongly from similar to 310 to similar to 6 m.y. at similar to 140-185 degrees C. On the other hand, bulk and position-specific delta C-13 values of propane remain nearly constant during the maturation. Position-specific isotope compositions of propane at the highest maturity yield an equilibrium temperature that is consistent with its maturity, thus possibly serving as single-compound isotope geothermometry. (C) 2019 Published by Elsevier Ltd.
资助项目	U.S. Department of Energy Geosciences program[DE-SC0016271] ; National Science Foundation[1048553] ; National Science Foundation[1428605]
WOS关键词	POSITION-SPECIFIC CARBON ; MISSISSIPPIAN BARNETT SHALE ; FORT-WORTH BASIN ; THERMAL MATURITY ; FORMATION WATERS ; N-ALKANES ; METHANE ; HYDROGEN ; PROPANE ; PETROLEUM
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000468170500010
资助机构	U.S. Department of Energy Geosciences program ; U.S. Department of Energy Geosciences program ; National Science Foundation ; National Science Foundation ; U.S. Department of Energy Geosciences program ; U.S. Department of Energy Geosciences program ; National Science Foundation ; National Science Foundation ; U.S. Department of Energy Geosciences program ; U.S. Department of Energy Geosciences program ; National Science Foundation ; National Science Foundation ; U.S. Department of Energy Geosciences program ; U.S. Department of Energy Geosciences program ; National Science Foundation ; National Science Foundation
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/92121]
专题	地质与地球物理研究所_兰州油气中心
通讯作者	Liu, Changjie
作者单位	1.Texas Tech Univ, Dept Geosci, Lubbock, TX 79409 USA 2.West Texas A&M Univ, Dept Chem & Phys, Canyon, TX 79016 USA 3.Chinese Acad Sci, Inst Geol & Geophys, Lanzhou Ctr Oil & Gas Resources, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Liu, Changjie,Liu, Peng,McGovern, Gregory P.,et al. Molecular and intramolecular isotope geochemistry of natural gases from the Woodford Shale, Arkoma Basin, Oklahoma[J]. GEOCHIMICA ET COSMOCHIMICA ACTA,2019,255:188-204.
APA	Liu, Changjie,Liu, Peng,McGovern, Gregory P.,&Horita, Juske.(2019).Molecular and intramolecular isotope geochemistry of natural gases from the Woodford Shale, Arkoma Basin, Oklahoma.GEOCHIMICA ET COSMOCHIMICA ACTA,255,188-204.
MLA	Liu, Changjie,et al."Molecular and intramolecular isotope geochemistry of natural gases from the Woodford Shale, Arkoma Basin, Oklahoma".GEOCHIMICA ET COSMOCHIMICA ACTA 255(2019):188-204.