Accumulation conditions and prospective areas of shale gas in the Middle Jurassic Dameigou Formation, northern Qaidam Basin, Northwest China

doi:10.1002/gj.3134

CORC > 地质与地球物理研究所 > 中国科学院地质与地球物理研究所 > 中国科学院油气资源研究重点实验室

	Accumulation conditions and prospective areas of shale gas in the Middle Jurassic Dameigou Formation, northern Qaidam Basin, Northwest China
	Guo, Tianxu 1,2,3; Ren, Shoumai 4; Luo, Xiaorong 1; Bao, Shujing 3; Wang, Shengjian 3; Zhou, Zhi 3; Chen, Xianglin 3; Li, Haohan 3; Xu, Qiufeng 3
刊名	GEOLOGICAL JOURNAL
	2018-11-01
卷号	53 期号:6 页码:2944-2954
关键词	accumulation conditions Dameigou Formation Middle Jurassic prospective area Qaidam Basin shale gas
ISSN号	0072-1050
DOI	10.1002/gj.3134
英文摘要	The Qaidam Basin is one of the most resource-rich onshore petroliferous basins in Northwest China. The Middle Jurassic Dameigou Formation crops out along the northern margin of the basin and consists of a sequence of lacustrine sedimentary units, including sets of thick, black shale unit. The shale gas exploration well CY1 had shown significant logging anomalies that have been interpreted to indicate the presence of shale gas. This gas signature well provides valuable shale rock and shale gas parameters that enabled the identification of three areas for future shale gas exploration in this region, namely, to the south-east of Lenghu, in the area around Yuqia, and to the south-east of Huaitoutala. This study presents new data for organic-rich shale samples of the Dameigou Formation that were collected from boreholes and outcrops that enable the determination of some of the conditions of shale gas accumulation. The black shale unit within seventh interval of the Dameigou Formation is about 20 to 80 m thick. Its total organic carbon content is high (average of 2.62%), kerogen types are II1 and II2, and thermal maturity is mid to high (average Ro of 0.89%). It contains low abundances of brittle minerals and high abundances of clay minerals, micrometre to nanometre pore sizes, and high gas contents (average of 1.11 m(3)/t). These shale properties favour both shale gas generation and accumulation within the northern Qaidam Basin and are comparable to the properties of shales within shale gas fields in North America and elsewhere in China.
资助项目	China Geological Survey[1212011221045] ; Ministry of Science and Technology of the People's Republic of China[2016ZX05034002]
WOS关键词	MISSISSIPPIAN BARNETT SHALE ; MORPHOLOGY ; SYSTEMS ; TEXAS
WOS研究方向	Geology
语种	英语
出版者	WILEY
WOS记录号	WOS:000450653800033
资助机构	China Geological Survey ; China Geological Survey ; Ministry of Science and Technology of the People's Republic of China ; Ministry of Science and Technology of the People's Republic of China ; China Geological Survey ; China Geological Survey ; Ministry of Science and Technology of the People's Republic of China ; Ministry of Science and Technology of the People's Republic of China ; China Geological Survey ; China Geological Survey ; Ministry of Science and Technology of the People's Republic of China ; Ministry of Science and Technology of the People's Republic of China ; China Geological Survey ; China Geological Survey ; Ministry of Science and Technology of the People's Republic of China ; Ministry of Science and Technology of the People's Republic of China
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/89639]
专题	地质与地球物理研究所_中国科学院油气资源研究重点实验室
通讯作者	Ren, Shoumai
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, Beijing, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China 3.China Geol Survey, Oil & Gas Survey, Beijing, Peoples R China 4.China Geol Survey, Beijing 100037, Peoples R China
推荐引用方式 GB/T 7714	Guo, Tianxu,Ren, Shoumai,Luo, Xiaorong,et al. Accumulation conditions and prospective areas of shale gas in the Middle Jurassic Dameigou Formation, northern Qaidam Basin, Northwest China[J]. GEOLOGICAL JOURNAL,2018,53(6):2944-2954.
APA	Guo, Tianxu.,Ren, Shoumai.,Luo, Xiaorong.,Bao, Shujing.,Wang, Shengjian.,...&Xu, Qiufeng.(2018).Accumulation conditions and prospective areas of shale gas in the Middle Jurassic Dameigou Formation, northern Qaidam Basin, Northwest China.GEOLOGICAL JOURNAL,53(6),2944-2954.
MLA	Guo, Tianxu,et al."Accumulation conditions and prospective areas of shale gas in the Middle Jurassic Dameigou Formation, northern Qaidam Basin, Northwest China".GEOLOGICAL JOURNAL 53.6(2018):2944-2954.