石油实验地质2018，Vol.40Issue(1)：64-70,7.DOI:10.11781/sysydz201801064
四川盆地涪陵页岩气田五峰—龙马溪组岩矿纵向差异性研究——以JYA井为例
Vertical variation of rocks and minerals in Wufeng-Longmaxi formations in Fuling shale gas field, Sichuan Basin:A case study of well JYA
摘要
Abstract
The Fuling shale gas field is the first to achieve commercial development in China. The well JYA in the Jiaoshiba area of Sichuan Basin was used as an example to study the vertical variation of rock and mineral composition based on thin section observation and scanning electron microscopy ( SEM ) , and combined with X-ray diffraction of whole rock and organic carbon determination. The results showed that quartz and clay minerals are dominant in the Wufeng-Longmaxi shale, accounting for over 70％, followed by feldspar and carbonate, and a small amount of pyrite. From bottom to top, the contents of quartz, feldspar and pyrite gradually decrease, while that of clay minerals increases. The effects of shale mineral vertical variation on shale reservoir property, gas content and compressibility were discussed. With the increase of biogenic silicate and the reduction of clay mineral in vertical direction, the shale shows a tendency of increasing organic matter content, organic matter pore development, shale reservoir performance and shale gas content from top to bottom. At the same time, with the increase of brittle mineral content, the compressible property of shale is also gradually enhanced.关键词
岩石组分/有机碳/孔隙类型/含气量/页岩/五峰—龙马溪组/涪陵页岩气田Key words
rock constituents/organic carbon/pore type/gas content/shale/Wufeng-Longmaxi formations/Fuling shale gas field分类
能源科技引用本文复制引用
张梦吟,李争,王进,韩驰宇,刘霜,钱华..四川盆地涪陵页岩气田五峰—龙马溪组岩矿纵向差异性研究——以JYA井为例[J].石油实验地质,2018,40(1):64-70,7.基金项目
国家科技重大专项(2016ZX05060)和中国石化科技项目(P17014-2)资助. （2016ZX05060）
