首页|Differences in and factors controlling organic matter enrichment in the Ziliujing Formation shale in the Sichuan Basin

Differences in and factors controlling organic matter enrichment in the Ziliujing Formation shale in the Sichuan Basin

扫码查看
原文链接
  • NETL
  • NSTL
  • 万方数据
  • 维普
Lacustrine shale oil and gas are important fields for unconventional exploration and development in China,and organic-rich shale deposition lays down the critical foundation for hydrocarbon generation.There are two sets of shale,the Dongyuemiao and Da'anzhai Members,in the Ziliujing Formation in the Sichuan Basin.To identify the differential enrichment characteristics of organic matter and clarify its controlling factors,geochemical analyses of organic and inorganic geochemical analyses were performed.The results showed that the total organic carbon content of the Dongyuemiao shale(136％)is slightly higher than that of the Da'anzhai shale(0.95％).The enrichment of organic matter in the two shales resulted from the comprehensive controls of paleoproductivity,paleoenvironment,and terrigenous input,but different factors have different effects.In addition,driven by climate,the change in the sulfate concentration in the bottom water further led to the different intensities of bacterial sulfate reduction in early diagenesis.This made a great difference regarding organic matter accumulation in the two members.In general,climate may have played a dominant role in organic matter enrichment in the two sets of shale.

Lacustrine shaleZiliujing FormationSichuan BasinEnrichment mechanism of organic matter

Peng Li、Zhong-Bao Liu、He Bi、Tao Jiang、Rui-Kang Bian、Peng-Wei Wang、Xiao-Yu Shang

展开 >

State Key Laboratory of Shale Oil and Gas Enrichment Mechanisms and Efficient Development,Beijing 102206,China

Key Laboratory of Shale Oil/Gas Exploration and Production Technology,SINOPEC,Beijing,102206,China

Petroleum Exploration and Production Research Institute,SINOPEC Beijing 102206,China

Research Institute of Petroleum Exploration and Development,PetroChina,Beijing,100083,China

Chinese Academy of Geological Sciences,Beijing,100037,China

No.4 Oil Production Plant in Daqing Oilfield Co Ltd.,Daqing 163511,Heilongjiang China

展开 >

国家自然科学基金国家自然科学基金中国科学院战略规划重点项目

42002139U20B6001XDA14010404

2024

10.1016/j.petsci.2023.10.020

石油科学(英文版)
中国石油大学（北京）

石油科学(英文版)

EI
影响因子：0.88
ISSN：1672-5107
年,卷(期)：2024.21(1)
  • 62