中扬子地区五峰-龙马溪组页岩气成藏地质条件  

Geological Conditions of Shale Gas Accumulation of Wufeng-Longmaxi Group in Middle Yangzi Region

作　　者：龙幼康[1] 

机构地区：[1]中石化江汉油田分公司勘探开发研究院,湖北武汉430223

出　　处：《江汉石油职工大学学报》2017年第3期25-28,共4页Journal of Jianghan Petroleum University of Staff and Workers

摘　　要：基于中扬子地区重点井-EY1井钻井取心资料,采用X-衍射、氩离子抛光扫描电镜和比表面积等实验测试方法,明确了中扬子地区五峰-龙马溪组页岩气成藏地质条件。即,五峰组-龙马溪组主要为深水陆棚环境,页岩厚度较大(富有机质泥页岩厚度为30~90m),有机质丰度较高,普遍处于过成熟阶段,孔隙度为2.1%~4.1%,而EY1井五峰-龙马溪组朗格谬尔体积为1.69~1.93m3/t,全烃显示达5.86%,显示较大勘探潜力。Based on the drilling cores of EY1 well which is the key well of the middle Yangzi region, through meth- ods of X--ray diffraction, argon ion polishing, scanning electron microscopy and specific surface area, the geological condition of shale gas accumulation of Wufeng--Longmaxi group in middle Yangzi region has been figured out. The sedimentary face of Wufeng--Longmaxi group shale is deep shelf. The shale thickness is big （the shale thickness of rich organic matter is 30 ~ 90 m）. The organic matter abundance is relatively high and generally at mature stage with porosity of 2. 1% - 4. 1%. The Langmuir volume of EY1 well of Wufeng--Longmaxi group is 1.69 ~ 1.93 m3 / t with total hydrocarbon show of 5. 86 %, which implies great exploration potential.

关 键 词：中扬子地区 五峰-龙马溪组 页岩气勘探潜力 

分 类 号：TE132.2[石油与天然气工程—油气勘探]