Origin of shale gas in the Triassic Yanchang Formation, Ordos Basin, China

doi:10.1080/10916466.2017.1296462

	Origin of shale gas in the Triassic Yanchang Formation, Ordos Basin, China
	Meng, Qiang 1,2; Wang, Xiaofeng 1; Wang, Xiangzeng 3; Liu, Peng 1,2; Lei, Yuhong 1; Zhang, Lixia 3; Jiang, Chengfu 3; Shi, Baoguang 1
刊名	PETROLEUM SCIENCE AND TECHNOLOGY
	2017
卷号	35 期号:10 页码:969-974
关键词	Biogenic Gas Carbon Isotopes Dryness Coefficient Gas Content Shale Gas
ISSN号	1091-6466
DOI	10.1080/10916466.2017.1296462
文献子类	Article
英文摘要	The Chang 7 Member shale gas of the Upper Triassic Yanchang Formation, Ordos Basin, is a representative of continental shale gas in China. The Chang 7 shale is currently in the oil window, suggesting it should primarily be producing oil, but an exploratory well found high levels of gas production. In addition, the methane carbon isotopic composition (delta C-13(1)) of Chang 7 shale gas is generally depleted in C-13 relative to that calculated by Ro, according to the delta C-13-Ro equation. It is uncertain whether Chang 7 shale gas has mixed with biogenic gas or early thermogenic gas. In this study, over 100 samples of fresh shale cores were collected from the Yanchang Formation, and on-site gas desorption experiments and experimental analysis were carried out. Measured shale gas content was considerable, and was found to be proportional to the abundance of organic matter. Through comprehensive evaluation of the gas composition and delta C-13(1), it was concluded that there was no biogenic gas contribution to the shale gas in the study area. The negative delta C-13(1) of shale gas was due to the different formation mechanisms of shale gas and conventional natural gas. Methane in shale gas reservoirs is the result of methane accumulation at all stages, which increases the shale gas content.
WOS关键词	NATURAL GASES ; IDENTIFICATION ; FRACTIONATION ; SUBSURFACE ; METHANE ; TEXAS
WOS研究方向	Energy & Fuels ; Engineering
语种	英语
出版者	TAYLOR & FRANCIS INC
WOS记录号	WOS:000417423600005
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/82282]
专题	中国科学院地质与地球物理研究所
通讯作者	Wang, Xiaofeng
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Resources, Gansu Prov Key Lab Petr Resources Res, Lanzhou 730000, Gansu, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China 3.Shaanxi Yanchang Petr Grp CO LTD, Xian, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Meng, Qiang,Wang, Xiaofeng,Wang, Xiangzeng,et al. Origin of shale gas in the Triassic Yanchang Formation, Ordos Basin, China[J]. PETROLEUM SCIENCE AND TECHNOLOGY,2017,35(10):969-974.
APA	Meng, Qiang.,Wang, Xiaofeng.,Wang, Xiangzeng.,Liu, Peng.,Lei, Yuhong.,...&Shi, Baoguang.(2017).Origin of shale gas in the Triassic Yanchang Formation, Ordos Basin, China.PETROLEUM SCIENCE AND TECHNOLOGY,35(10),969-974.
MLA	Meng, Qiang,et al."Origin of shale gas in the Triassic Yanchang Formation, Ordos Basin, China".PETROLEUM SCIENCE AND TECHNOLOGY 35.10(2017):969-974.