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

doi:10.1080/10916466.2017.1296462

IGGCAS OpenIR

	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
	2017
发表期刊	PETROLEUM SCIENCE AND TECHNOLOGY
ISSN	1091-6466
卷号	35 期号:10 页码:969-974
文章类型	Article
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.
关键词	Biogenic Gas Carbon Isotopes Dryness Coefficient Gas Content Shale Gas
WOS标题词	Science & Technology ; Technology
DOI	10.1080/10916466.2017.1296462
关键词[WOS]	NATURAL GASES ; IDENTIFICATION ; FRACTIONATION ; SUBSURFACE ; METHANE ; TEXAS
收录类别	SCI
语种	英语
WOS研究方向	Energy & Fuels ; Engineering
WOS类目	Energy & Fuels ; Engineering, Chemical ; Engineering, Petroleum
WOS记录号	WOS:000417423600005
出版者	TAYLOR & FRANCIS INC
引用统计
文献类型	期刊论文
条目标识符	http://ir.iggcas.ac.cn/handle/132A11/82283
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
第一作者单位	兰州油气中心
通讯作者单位	兰州油气中心
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.