四川盆地龙潭组烃源岩全硫含量特征及其对沉积环境的响应

doi:10.11743/ogg20140307

Abstract

Abstract:

Based on the systematic analysis of Total Sulfur content(TS)of source rock from the Upper Permian Longtan Formation(LTF)in Sichuan Basin,this paper studied the distribution feature of TS,its controlling factors as well as its responses to and significance as a indicator for sedimentary environment.Shale source rock of LTF is rich in sulfur,but limestone is poor in sulfur.TS has positive correlations with TOC,pyrites content and δ¹³C value of kerogen respectively.The TS and TOC/TS value of source rock have distinct responses to and significance as indicators for the sedimentary environment. Source rocks of LTF in paralic facies in middle and southern Sichuan Basin has high TS and low TOC/TS value.Source rocks in intra-platform sag or deep-water shelf facies in northeastern Sichuan Basin has relatively higher TS and TOC/TS value.And limestone in carbonate platform or shallow-water carbonate shelf facies in Chengkou,Nanjiang,Shizhu areas located at the edge of Sichuan Basin has low TS and high TOC/TS value.

Key words: total sulfur, sedimentary environment, source rock, Longtan Formation, Sichuan Basin

CLC Number:

TE122.1

Fu Xiaodong, Qiu Nansheng, Qin Jianzhong, Tenger, Liu Wenhui, Wang Xiaofang. Total sulfur distribution of source rock of the Upper Permian Longtan Formation and its response to sedimentary environment in Sichuan Basin[J]. Oil & Gas Geology, 2014, 35(3): 342-349.

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Total sulfur distribution of source rock of the Upper Permian Longtan Formation and its response to sedimentary environment in Sichuan Basin

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