气候变化领域集成服务门户(CCPortal): Organic matter heterogeneity and shale oil significance in Triassic Zhangjiatan shale, Ordos Basin, China

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DOI	10.1177/01445987211039382
	Organic matter heterogeneity and shale oil significance in Triassic Zhangjiatan shale, Ordos Basin, China
	Li, Xiaoyan; Tuo, Jincai; Wu, Chenjun; Xin, Honggang; Zhang, Mingfeng; Zheng, Junwei; Ma, Xiaofeng
通讯作者	Tuo, JC (通讯作者)，Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Lanzhou 730000, Peoples R China.
发表日期	2022
ISSN	0144-5987
EISSN	2048-4054
起始页码	224
结束页码	245
卷号	40 期号:1
英文摘要	Organic matter heterogeneity exerts an important impact on the generation, evaluation, and exploitation of shale oil resources. In the past, only a limited number of analytical samples that represented the contribution or influence of high or low organic matter abundance intervals were used to represent an entire set of thick source rocks, and based on this limitation, occasionally researchers have reached incorrect conclusions. Here, the heterogeneity of organic matter and its significance to shale oil in the Triassic Zhangjiatan shale of the Ordos Basin were discussed based on sedimentary and geochemical analyses. Our results indicate that (1) the Chang 7(3) shale within the study area is characterized by high abundance, good quality, strong heterogeneity, and segmented enrichment in the vertical profile. The primary organic matter type was type II1, and this was followed by types I, II2, and III that exhibited three changing trends in the vertical profile. Organic matter maturity is primarily at the immature stage. (2) Additionally, we observed that the organic matter heterogeneity of Chang 7(3) shale was related to changes in lithology, sedimentary environment, paleoproductivity, terrigenous influence, and event action (such as volcanism and hydrothermal processes). The abundance of organic matter is the result of the coupling control of these processes. In the process of organic matter deposition, if volcano or hydrothermal activities occurred, the organic matter was abnormally enriched, and the total organic carbon content exceeded 20% and could even be as high as 40%. (3) Finally, we observed at least nine enrichment layers that were controlled by the coupling of different geological factors, and there were four potential target resource layers corresponding to the hydrothermal sedimentary area.
关键词	CHANG 7 MEMBER YANCHANG FORMATION ENRICHMENT AREA
英文关键词	Organic matter heterogeneity; shale oil; Hejiafang section; Ordos Basin; Chang 7(3) shale; controlling factors
语种	英语
WOS研究方向	Energy & Fuels
WOS类目	Energy & Fuels
WOS记录号	WOS:000704037400001
来源期刊	ENERGY EXPLORATION & EXPLOITATION
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/254197
作者单位	[Li, Xiaoyan; Tuo, Jincai; Zhang, Mingfeng; Zheng, Junwei; Ma, Xiaofeng] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Lanzhou 730000, Peoples R China; [Li, Xiaoyan; Tuo, Jincai; Zhang, Mingfeng; Ma, Xiaofeng] Key Lab Petr Resources, Lanzhou, Gansu, Peoples R China; [Li, Xiaoyan] Univ Chinese Acad Sci, Beijing, Peoples R China; [Wu, Chenjun] Yangtze Univ, Coll Resources & Environm, Wuhan, Peoples R China; [Xin, Honggang] Natl Engn Lab, Explorat & Dev Low Permeabil Oil & Gas Fields, Xian, Peoples R China; [Xin, Honggang] Petro China Changqing Oilfield Co, Explorat & Dev Res Inst, Xian, Peoples R China
推荐引用方式 GB/T 7714	Li, Xiaoyan,Tuo, Jincai,Wu, Chenjun,et al. Organic matter heterogeneity and shale oil significance in Triassic Zhangjiatan shale, Ordos Basin, China[J]. 中国科学院西北生态环境资源研究院,2022,40(1).
APA	Li, Xiaoyan.,Tuo, Jincai.,Wu, Chenjun.,Xin, Honggang.,Zhang, Mingfeng.,...&Ma, Xiaofeng.(2022).Organic matter heterogeneity and shale oil significance in Triassic Zhangjiatan shale, Ordos Basin, China.ENERGY EXPLORATION & EXPLOITATION,40(1).
MLA	Li, Xiaoyan,et al."Organic matter heterogeneity and shale oil significance in Triassic Zhangjiatan shale, Ordos Basin, China".ENERGY EXPLORATION & EXPLOITATION 40.1(2022).