渝东南残留向斜发现高压致密砂岩气

发布时间：2018-03-17 20:34

本文选题：向斜　切入点：龙马溪组　出处：《中国地质》2017年04期 　论文类型：期刊论文

【摘要】：正1研究目的(Objective)黔北地区安页1井在志留系石牛栏组发现了高压海相致密气藏,储层岩性为海相泥质灰岩与灰质泥岩薄互层,压力系数高达2.27,是四川盆地外残留向斜油气勘探历史性、里程碑式重大发现。与黔北地区相邻且地质条件相似的渝东南地区,具有类似安场向斜的逆断层封堵构造,同样发育下志留统龙马溪组黑色页岩,且残留向斜内龙马溪组页岩气在彭水、南川均获得了常压工业产能。龙马溪组页岩及上覆地层
[Abstract]:Objective (1) High pressure marine tight gas reservoir was found in Shigniulan formation of Silurian, and the lithology of the reservoir is a thin interbed of marine argillaceous limestone and lime-mudstone. The pressure coefficient is as high as 2.27, which is a historic and landmark discovery of oil and gas exploration in the residual syncline outside the Sichuan Basin. The area adjacent to the northern part of Guizhou and having similar geological conditions has the reverse fault sealing structure similar to the Anchang syncline. The black shale of the Longmaxi formation of Lower Silurian and the shale gas of the inner Longmaxi formation in the residual syncline have been obtained in Pengshui and Nanchuan. Shale and overlying strata of Longmaxi formation
【作者单位】：中国地质调查局油气资源调查中心;重庆地质矿产研究院;
【基金】：中国地质调查局项目“重庆武隆地区1:5万页岩气地质调查”(1212011510301)、“武陵山下古生界页岩气战略选区调查”(DD20160915)、“中下扬子地区油气资源综合调查与评价”(1211302108020-3)资助的成果
【分类号】：P618.13

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