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Hydrocarbon Generation and Residue Features of Ediacaran High-Maturity Source Rocks and Their Significance in Gas Exploration in Sichuan Basin

文献类型：期刊论文

作者Wang, Wenyang1; Pang, Xiongqi5,6; Wang, Yaping2,5; Chen, Mingjun7; Chen, Ying1; Li, Changrong3; Chen, Zhangxin4
刊名PROCESSES
出版日期2023-11-01
卷号11期号:11页码:22
关键词sichuan basin precambrian petroleum system high-maturity source rock hydrocarbon residues shale gas
DOI10.3390/pr11113193
英文摘要Evaluating residual hydrocarbons is crucial for assessing shale oil and gas reservoirs, significantly impacting resource evaluation and exploration prospects. Previously regarded as lacking hydrocarbon generation potential, the Ediacaran Dengying Formation (Fm) microbial dolomite in the Sichuan Basin has been re-evaluated for its hydrocarbon generation capabilities. While understanding source rock characteristics is vital for petroleum resource assessment, a comprehensive analysis of the dolomite's source rocks, encompassing hydrocarbon generation and residual features, remains undocumented. In this study, we thoroughly analyze the total organic carbon and vitrinite reflectance and extensively utilize pyrolysis analysis, gas chromatography and isotopic analysis of the organic kerogen from the Ediacaran Dengying Fm dolomite samples. The findings affirm that the Ediacaran Dengying Fm dolomite indeed serves as a source rock with moderate hydrocarbon generation and residue capabilities. This microbial dolomite was formed in a reducing marine environment with high salinity. Characterized by an averaging TOC of 0.82%, the kerogen is primarily identified as type I, with a minor presence of type II, and underwent thermal maturation up to the post-maturity stage. Throughout its geological history, the maximum intensities for hydrocarbon generation and residues were 4.5 x 107 t/km2 and 3.2 x 107 t/km2, respectively. Additionally, cumulatively generated and residual hydrocarbon quantities amounted to 2.7 x 1012 t and 1.67 x 1012 t, respectively. This study indicates significant exploration potential for the Ediacaran Dengying Fm microbial dolomite. Consequently, the central region in the Sichuan Basin has been identified as a promising area for future exploration endeavors. Our study provides valuable insights for the understanding of shale gas exploration in high-maturity source rock areas.
WOS关键词KINETICS SINGLE ; SHALE OIL ; PETROLEUM SYSTEMS ; FIELD ; BIOMARKERS ; DISCOVERY ; DOLOMITE ; GEOCHEMISTRY ; ENVIRONMENT ; PREDICTION
资助项目Open Fund Project of the State Key Laboratory of Lithospheric Evolution
WOS研究方向Engineering
语种英语
出版者MDPI
WOS记录号WOS:001119735100001
资助机构Open Fund Project of the State Key Laboratory of Lithospheric Evolution ; Open Fund Project of the State Key Laboratory of Lithospheric Evolution ; Open Fund Project of the State Key Laboratory of Lithospheric Evolution ; Open Fund Project of the State Key Laboratory of Lithospheric Evolution ; Open Fund Project of the State Key Laboratory of Lithospheric Evolution ; Open Fund Project of the State Key Laboratory of Lithospheric Evolution ; Open Fund Project of the State Key Laboratory of Lithospheric Evolution ; Open Fund Project of the State Key Laboratory of Lithospheric Evolution ; Open Fund Project of the State Key Laboratory of Lithospheric Evolution ; Open Fund Project of the State Key Laboratory of Lithospheric Evolution ; Open Fund Project of the State Key Laboratory of Lithospheric Evolution ; Open Fund Project of the State Key Laboratory of Lithospheric Evolution ; Open Fund Project of the State Key Laboratory of Lithospheric Evolution ; Open Fund Project of the State Key Laboratory of Lithospheric Evolution ; Open Fund Project of the State Key Laboratory of Lithospheric Evolution ; Open Fund Project of the State Key Laboratory of Lithospheric Evolution
源URL[http://ir.iggcas.ac.cn/handle/132A11/111528]  
专题地质与地球物理研究所_岩石圈演化国家重点实验室
通讯作者Wang, Wenyang; Chen, Zhangxin
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
2.PetroChina Southwest Oil & Gas Field Co, Res Inst Explorat & Dev, Chengdu 610041, Peoples R China
3.Peking Univ, Sch Earth & Space Sci, Beijing 100871, Peoples R China
4.Univ Calgary, Schulich Sch Engn, Chem & Petr Engn, Calgary, AB T2N 1N4, Canada
5.China Univ Petr, Coll Geosci, Beijing 102249, Peoples R China
6.China Univ Petr, State Key Lab Petr Resources & Prospecting, Beijing 102249, Peoples R China
7.Southwest Petr Univ, Petr Engn Sch, Chengdu 610500, Peoples R China
推荐引用方式
GB/T 7714		 Wang, Wenyang,Pang, Xiongqi,Wang, Yaping,et al. Hydrocarbon Generation and Residue Features of Ediacaran High-Maturity Source Rocks and Their Significance in Gas Exploration in Sichuan Basin[J]. PROCESSES,2023,11(11):22.
APA Wang, Wenyang.,Pang, Xiongqi.,Wang, Yaping.,Chen, Mingjun.,Chen, Ying.,...&Chen, Zhangxin.(2023).Hydrocarbon Generation and Residue Features of Ediacaran High-Maturity Source Rocks and Their Significance in Gas Exploration in Sichuan Basin.PROCESSES,11(11),22.
MLA Wang, Wenyang,et al."Hydrocarbon Generation and Residue Features of Ediacaran High-Maturity Source Rocks and Their Significance in Gas Exploration in Sichuan Basin".PROCESSES 11.11(2023):22.

入库方式： OAI收割

来源：地质与地球物理研究所

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