川东南武隆地区五峰组—龙马溪组页岩气形成条件及富集区分析

发布时间：2018-05-14 23:05

本文选题：奥陶系 + 志留系　；参考：《海相油气地质》2017年03期

【摘要】：通过野外地质调查资料及样品测试分析,结合前人研究的结果,对川东南武隆地区五峰组—龙马溪组页岩气形成的基础地质条件进行了研究,指出五峰组与龙马溪组底部富有机质页岩形成于深水陆棚环境,富有机质页岩厚度大,分布广,埋深适中(300~3 500 m),脆性矿物含量较高,TOC主要分布于2%~5%之间,热演化程度处于高成熟—过成熟早期阶段,发育溶蚀(微)孔、粒间微孔、粒内微孔、有机质孔及微裂缝等,并通过综合信息叠合分析,提出了5个页岩气富集区。
[Abstract]:Through the field geological survey data and sample test analysis, combined with the results of previous studies, the basic geological conditions for formation of shale gas in the five peak group of Wulong area, the Long Maxi formation, are studied. It is pointed out that the five peak group and the bottom of the Long Maxi formation are rich in the deep-water shelf environment, and the rich shale is thick and widely distributed. The buried depth is moderate (300~3 500 m), the content of brittle minerals is high, and TOC is mainly distributed between 2%~5%. The thermal evolution is in the early stage of high maturity and over maturity, and the dissolution (micro) pores, intergranular micropores, micropores, organic pores and micro cracks are developed, and 5 shale gas enrichment areas have been put forward through comprehensive information overlap analysis.

【作者单位】：中国地质调查局成都地质调查中心;国土资源部沉积盆地与油气资源重点实验室;
【基金】：中国地质调查局“四川盆地页岩气基础地质调查”项目(编号:[2015]01-04-09-001)资助
【分类号】：P618.13

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