南祁连盆地石炭系可能烃源岩的甾萜烷地球化学特征及意义

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SEQUENCE STRATIGRAPHY APPLIED IN THE RESTORATION OF THE CALEDONIAN PALEOGEOMORPHOLOGY-A CASE STUDY IN ZHANHUA AREA, THE JIYANG DEPRESSION

Department of Resources, University of Petroleum, Dongying, Shandong 257061, China

摘要: 作者应用生物标记物分析技术,结合其它地球化学资料,对南祁连石炭系碳酸盐岩和泥岩进行了有机质生源构成、沉积环境、成熟度和生油潜力等方面的初步研究。研究结果表明,该烃源岩发育的沉积环境为海相还原环境,有机母质主要为低等水生生物兼有高等植物的混入,有机质类型为腐殖腐泥型和腐泥型,有机质丰度高,成熟度较高,具有形成油气的有利条件
- 地球化学 /
- 甾萜烷 /
- 石炭系 /
- 南祁连盆地
Abstract: The biologic-source constitution, sedimentary environment, maturity and oil-generating potential of organic matter in the Carboniferous carbonate rocks and mudstones of the South Qilian Basin is studied preliminarily by means of biomarker analysis technology combined with other geochemical data. The result reveals that the hydrocarbon source rocks were developed in marine reducing sedimentary environment, their organic mother material is mainly low-grade hydrobios mixed with high-grade plants, and the organic material includes humic-sapropel and sapropel two types. The source rocks have high enrichment of organic matter and higher maturity, and possess favorable conditions to form gas and oil.
- geochemistry /
- steranes and terpanes /
- the Carboniferous /
- the South Qilian Basin

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