Effects of source facies and maturity on individual carbon isotopic compositions of oil

doi:10.1016/j.gsf.2024.101846

NIGPAS OpenIR

	Effects of source facies and maturity on individual carbon isotopic compositions of oil
通讯作者	Zhang, Jingkun(zhangjk@nju.edu.cn)
	Zhang, Jingkun 1; Cao, Jian 2; Xiang, Baoli 3
	2024-09-01
发表期刊	GEOSCIENCE FRONTIERS
ISSN	1674-9871
卷号	15 期号:5 页码:12
摘要	Carbon isotopes have been used extensively in tracing the sources of oil. However, primary source facies and secondary alteration controls on oil isotopic compositions have not been well resolved, resulting in application uncertainties. A case study was undertaken for an alkaline lacustrine oil system in a lower Permian formation in the Junggar Basin, NW China. Results indicate that increasing maturity causes the carbon isotopic composition to become heavier for only short-middle-chain compounds, whereas source facies -related carbon assimilation controls the compositions of short-, middle-, and long -chain compounds. In particular, light -carbon assimilation during organic -matter degradation makes the isotopic composition lighter, whereas heavy carbon from the water mass makes it heavier. Accordingly, oils in this study area were divided into Type U and Type N oils based on individual compound carbon isotopic compositions, reflecting the difference in source facies in a highly saline and reducing stratified water environment. The results provide a better understanding of the controls on carbon isotopes in oil in sedimentary basins, reducing the uncertainty in oil-source correlation and addressing the origin of oil. CO 2024 China University of Geosciences (Beijing) and Peking University. Published by Elsevier B.V. on behalf of China University of Geosciences (Beijing). This is an open access article under the CC BY -NC -ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
关键词	Carbon assimilation Water stratification Carbon isotopes Alkaline lacustrine Junggar Basin
DOI	10.1016/j.gsf.2024.101846
收录类别	SCI
语种	英语
关键词[WOS]	NORTHWESTERN JUNGGAR BASIN ; NW CHINA ; CRUDE OILS ; TRIASSIC RESERVOIRS ; GEOCHEMISTRY ; ORIGIN ; HYDROCARBONS ; CONSTRAINTS ; PYROLYSIS ; LIPIDS
资助项目	National Natural Science Foundation of China[42102148] ; National Natural Science Foundation of China[42230808]
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:001216468000001
项目资助者	National Natural Science Foundation of China
出版者	CHINA UNIV GEOSCIENCES, BEIJING
文献类型	期刊论文
条目标识符	http://ir.nigpas.ac.cn/handle/332004/43710
专题	中国科学院南京地质古生物研究所
通讯作者	Zhang, Jingkun
作者单位	1.Chinese Acad Sci, State Key Lab Palaeobiol & Stratig, Nanjing Inst Geol & Palaeontol, Nanjing 210008, Peoples R China 2.Nanjing Univ, Sch Earth Sci & Engn, MOE Key Lab Surficial Geochem, Nanjing 210023, Peoples R China 3.PetroChina, Xinjiang Oilfield Co, Res Inst Expt & Testing, Karamay 834000, Xinjiang, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Jingkun,Cao, Jian,Xiang, Baoli. Effects of source facies and maturity on individual carbon isotopic compositions of oil[J]. GEOSCIENCE FRONTIERS,2024,15(5):12.
APA	Zhang, Jingkun,Cao, Jian,&Xiang, Baoli.(2024).Effects of source facies and maturity on individual carbon isotopic compositions of oil.GEOSCIENCE FRONTIERS,15(5),12.
MLA	Zhang, Jingkun,et al."Effects of source facies and maturity on individual carbon isotopic compositions of oil".GEOSCIENCE FRONTIERS 15.5(2024):12.