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济阳坳陷煤系烃源岩生物标志化合物与同位素对比研究
石油与天然气地质
2006年 27卷 第No.5期
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Title
Comparative study of biomarkers and carbon isotopes of coal-measure source rock in Jiyang depression
Authors
Li Zheng
Li Juyuan
Xu Xingyou
Lin Wu
Wang Ru
摘要
在系统分析和总结大量烃源岩分析数据的基础上,对济阳坳陷石炭一二叠系和中生界两套煤系烃源岩的生物标记化合物参数与碳同位素特征进行了详细的对比,对比结果显示石炭-二叠系煤系烃源岩干酪根、族组成碳同位素大于中生界坊子组;生物标记化合物中,石炭-二叠系煤系烃源岩与中生界坊子组相比具有更强的植烷优势、更高的γ蜡烷含量和更高的C胆甾烷含量,表明石炭-二叠系煤系烃源岩有机质的生成环境、母质组成及保存条件优于中生界。
Abstract
A detaile comparative study is performed on the biomarkers and the carbon isotopes of two sets of coal-measure source rocks in Permo-Carboniferous and Mesozoic in Jiyang depression based on a systemic analysis of large amount of source rock data.Compared with the Mesozoic Fangzi Formation the coal measures source rock in Permo-Carboniferous is larger in stable carbon isotope of kerogen and group composition,higher in contents of gammacerane and Csterane,and lower in ratio of Pr/Ph,indicating a better environment for hydrocarbon generation,composition of parent materials,and preservation condition.
关键词：
碳同位素;
生物标志化合物;
石炭-二叠系;
煤系烃源岩;
济阳坳陷;
Keywords:
carbon isotope;
biomarker;
Permo-Carboniferous;
coal-measure source rock;
Jiyang depression;
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