干旱区生态环境知识资源中心(Arid): Organic geochemistry of Upper Paleozoic source rocks in the eastern margin of the Ordos Basin, China: Input and hydrocarbon generation potential

Arid

DOI	10.1016/j.petrol.2019.106202
	Organic geochemistry of Upper Paleozoic source rocks in the eastern margin of the Ordos Basin, China: Input and hydrocarbon generation potential
	Li, Yong 1,2,3; Wang, Zhuangsen 1,2; Wu, Peng 4; Gao, Xiangdong 1,2; Yu, Zhaolin 1,2; Yu, Yun 1,2; Yang, Jianghao 1,2
通讯作者	Li, Yong
来源期刊	JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
ISSN	0920-4105
EISSN	1873-4715
出版年	2019
卷号	181
英文摘要	In the present research, the hydrocarbon source rock potential, thermal maturity (T-max), and paleoenvironment of Upper Paleozoic coaly source rocks of the eastern margin of the Ordos Basin, China, were assessed by using Rock-Eval pyrolysis, gas chromatography (GC), and gas chromatography-mass spectrometry (GC-MS). The tested samples were found to be composed mostly of Type III kerogen organic matter with relatively low hydrogen and low oxygen index values. Graphs of the total organic carbon (TOC) content against free hydrocarbon (S-1) and source potential (S-2) values indicated that most of the samples have good source rock qualities. On the basis of maximum hydrocarbon generation temperature (T-max) and vitrinite reflectance (R-o), the investigated samples were found to be in mature and high-mature stages for hydrocarbon generation. The detected chromatograms were dominated by short (nC(15)-nC(20))-to middle (nC(20)-nC(25))-chain normal alkanes and were marked by a single peak with weak to no odd-even predominance. The C-29 alpha alpha alpha 20R/C-27 alpha alpha alpha 20R ratio varied between 1.14 and 1.35, and the gammacerane/hopane ratio ranged from 0.12 to 0.14, thus indicating a low-salinity reducing environment. Both the Late Carboniferous Taiyuan and the Early Permian Shanxi formations manifested a dominant source of higher plant as evidenced by the maceral compositions and biomarkers, while the Taiyuan Formation samples show a mixed source aquatic matter influenced by the transgression happened several times during the strata deposition. Moreover, the C-29 alpha alpha alpha 20R/C-27 alpha alpha alpha 20R ratio, Sigma C-21(-)/SC22+ ratios, and the distributions of C-27-, C-28-, and C-29- steranes revealed that the Taiyuan Formation source rocks were composed of certain contents of aquatic organisms and algae under a more reducing environment.
英文关键词	Transitional shale gas Paleoenvironmental conditions Organic-geochemical Organic petrology Ordos basin
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000477944700066
WOS关键词	NATURAL-GAS ACCUMULATIONS ; NORTH-WESTERN DESERT ; COAL-BEARING STRATA ; CRUDE OILS ; BIOLOGICAL MARKERS ; JUNGGAR BASIN ; DEPOSITIONAL-ENVIRONMENTS ; LUCAOGOU FORMATION ; THERMAL MATURITY ; NORMAL-ALKANES
WOS类目	Energy & Fuels ; Engineering, Petroleum
WOS研究方向	Energy & Fuels ; Engineering
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/217267
作者单位	1.China Univ Min & Technol, State Key Lab Coal Resources & Safe Min, Beijing 100083, Peoples R China; 2.China Univ Min & Technol, Coll Geosci & Surveying Engn, Beijing 100083, Peoples R China; 3.Shandong Univ Sci & Technol, Shandong Prov Key Lab Deposit Mineralisat & Sedim, Qingdao 266590, Shandong, Peoples R China; 4.China United Coal Bed Methane Co Ltd, Beijing 100011, Peoples R China
推荐引用方式 GB/T 7714	Li, Yong,Wang, Zhuangsen,Wu, Peng,et al. Organic geochemistry of Upper Paleozoic source rocks in the eastern margin of the Ordos Basin, China: Input and hydrocarbon generation potential[J],2019,181.
APA	Li, Yong.,Wang, Zhuangsen.,Wu, Peng.,Gao, Xiangdong.,Yu, Zhaolin.,...&Yang, Jianghao.(2019).Organic geochemistry of Upper Paleozoic source rocks in the eastern margin of the Ordos Basin, China: Input and hydrocarbon generation potential.JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING,181.
MLA	Li, Yong,et al."Organic geochemistry of Upper Paleozoic source rocks in the eastern margin of the Ordos Basin, China: Input and hydrocarbon generation potential".JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING 181(2019).