The sedimentary environment and main controlling factors of organic matter enrichment of Carboniferous-Permian marine-continental transitional shale in Kaiping syncline

被引:0
|
作者
Wang, Yang [1 ,2 ]
Zhang, Hanyu [1 ,2 ]
Chen, Haoran [1 ,2 ]
Zhu, Yanming [1 ,2 ]
Yang, Jinghui [1 ,2 ]
Zhang, Yunsheng [1 ,2 ]
Dou, Kailong [1 ,2 ]
Wang, Zhixuan [1 ,2 ]
机构
[1] China Univ Min & Technol, Key Lab Coalbed Methane Resources & Reservoir Form, Minist Educ, Xuzhou 221008, Jiangsu, Peoples R China
[2] China Univ Min & Technol, Sch Resources & Geosci, Xuzhou, Jiangsu, Peoples R China
基金
中国国家自然科学基金;
关键词
depositional environment; Kaiping syncline; marine-continental transitional shale; North China Basin; organic matter enrichment; Taiyuan-Shanxi formations; PALEOPRODUCTIVITY; GEOCHEMISTRY; ANCIENT;
D O I
10.1080/10916466.2024.2377333
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
The shale from the Carboniferous and Permian Taiyuan-Shanxi Formation in Kaiping syncline has good prospects for shale gas exploration and development. To understand the evolutionary characteristics of the sedimentary environment in this area and their relationships with organic matter enrichment. Shale samples from the Taiyuan-Shanxi in Well KP1 were selected as research objects, followed by organic geochemical research, elemental geochemical analysis, and numerical analysis. The results show that the sedimentary period of the Shanxi Formation was marked by a medium productivity level. The sedimentary water column was composed of brackish water and seawater deposits in an anoxic reduction environment. The Taiyuan Formation shale was characterized by a medium level of paleoproductivity. The sedimentary water column was composed of brackish water deposits in an anoxic reduction environment. According to the linear correlation analysis of paleoenvironmental conditions and TOC content. This study suggests that ancient water salinity is the main factor controlling the enrichment of organic matter in the sedimentary stage of the Taiyuan-Shanxi Formation. The paleodepositional environment of the Carboniferous and Permian sedimentary stages in Kaiping syncline has been revealed.The control mechanism of paleosedimentary environment on organic matter enrichment in black shale has been analyzed.The enrichment of organic matter in the Taiyuan-Shanxi Formations shale is primarily influenced by the salinity of ancient water.
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页数:21
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