秭归盆地及周缘龙马溪组页岩矿物组成与脆性分析  

Shale Mineral Composition and Brittleness Analysis of Longmaxi Formation in Zigui Basin and Its Surrounding Area

作　　者：吴先文 吴翔 廖文魁 周硕 陈葛成 

机构地区：[1]湖北煤炭地质勘查院,湖北武汉430021

出　　处：《资源环境与工程》2017年第5期554-557,共4页Resources Environment & Engineering

摘　　要：为研究秭归盆地及周缘泥页岩的矿物组成和页岩气储集层物性,对地表4条剖面及ZD1、ZD2、BD2共3口钻井龙马溪组页岩样品进行了有机地化、矿物组成实验测试。实验结果表明,秭归地区龙马溪组页岩具有有机质丰度高、热演化程度高、页岩气聚集条件较好的特点;脆性矿物含量较高,深度在4 000m以浅,利于压裂造缝,页岩气勘探前景较好。与国内外成功开发页岩气地区页岩相比,具有一定的相似性,具备页岩气成藏的良好地质条件。In order to study the shale mineral composition and shale gas reservoir physical properties in Zigui basin and its surrounding area,the shale samples of Longmaxi formation of 4 surface profiles and ZD1,ZD2,BD2 total of 3 drillings were tested for organic geochemical and mineral composition. The experimental results show that the shale of Longmaxi formation in Zigui area has the characteristics of high abundance of organic matter,high degree of thermal evolution and good conditions of shale gas accumulation. The brittle mineral content is higher,the depth is less than 4 000 m,which is favorable for fracturing,and shale gas exploration prospect is better. Compared with the shale gas shale to develop successfully at home and abroad,there is a certain similarity,with good geological conditions of shale gas accumulation.

关 键 词：龙马溪组 泥页岩 矿物组成 脆性 秭归盆地 

分 类 号：P618.12[天文地球—矿床学]