页岩储层矿物成分及相关讨论  

Mineral Compositions of Shale Reservoirs and Related Discussions

作　　者：赵迪斐[1] 解德录[1] 臧俊超 梁文鹏[1] 李利格[1] 

机构地区：[1]中国矿业大学资源与地球科学学院,江苏徐州221116

出　　处：《煤炭技术》2014年第4期92-95,共4页Coal Technology

基　　金：国家重点基础研究发展计划(973)资助项目(2012CB214702);中央高校基本科研业务费专项资金(2012DXS02);国家大学生创新训练项目(201310290030)

摘　　要：运用实验技术手段,综合测试分析了重庆南川泉浅一井龙马溪组下段页岩储层的矿物组分,分析结果表明:研究对象与其他页岩气有利区块的页岩相比,黏土矿物含量较高,脆性矿物含量较低,矿物组分对孔裂隙的发育具有重要影响;成岩作用介于晚成岩作用阶段与极低级变质作用阶段之间;基于矿物组分的脆性评价显示泉浅一井页岩脆性较低,但研究区页岩分布面积广、厚度大,可以弥补其他性质的不足。页岩矿物组分受控于沉积-成岩作用,通过沉积微相的分析确定页岩脆性矿物富集区带,对煤矿安全开采、煤层气分布富集研究、寻找页岩气压裂的有利区带等均有重要意义。Experiment has been performed to analyse the shale samples of the Longmaxi Formation from Chongqing Nanchuan QuanqianI well.The result shows that compared the shale from favorable block of shale gas development,these shale samples have higher level of clay and lower level of quartz.Also the method of mineral composition analysis laboratory evaluation for the brittle of shale was used to analyze the experimental data.Shale in this place is less brittle and thus may have some difficults in fracturing.But its thickness,wide area can make upthis deficiency to some extent.Shale mineral component is controlled by sedimentation and diagenesis.Through the analysis of sedimentary microfacies to determine the brittleness mineral enrichment areas has important meaning in safety production of mining、research of CBM distribution and the searching of the favorable area for shale gas fracturing.

关 键 词：页岩气 矿物成分 X射线衍射 脆性矿物 

分 类 号：P618[天文地球—矿床学]