徐祖新;郭少斌;

• 1:中国石油勘探开发研究院

• 2:中国地质大学(北京)能源学院

摘要(Abstract)：

为分析页岩储层孔隙结构,分析核磁共振、CT扫描、SEM、压汞法、氮气吸附法等方法,提出基于氩离子抛光-SEM技术与ImageJ软件结合的改进的页岩储层孔隙结构分析方法.首先,利用氩离子抛光-SEM技术获得中扬子地区陡山沱组页岩孔隙图像,将页岩分为有机质孔隙、粒间孔隙、粒内孔隙和微裂缝等4种孔隙类型;孔隙形态分为不规则多边形孔隙、近圆形孔隙、复杂网状孔隙、脉状或条带状孔隙等4类;然后,利用ImageJ软件定量分析陡山沱组页岩孔隙SEM图像.结果表明:中扬子地区陡山沱组页岩有机质孔最发育,粒间孔次之,粒内孔最不发育;粒间孔和粒内孔的孔隙直径较有机质孔的大;页岩的孔隙率为0.49%~1.21%,总孔隙率为2.86%.该方法实现对页岩储层孔隙结构的定性分析和定量表征,以及对储层的定量评价,研究结论对页岩储层孔隙结构分析具有参考意义.

关键词(KeyWords)：页岩气;储层;孔隙结构;氩离子抛光;ImageJ软件

Abstract:

Keywords:

基金项目(Foundation):中国石油天然气股份有限公司重大科技专项(2011D-07);; 国土资源部“全国油气资源战略选区调查与评价”专项(2009QYXQ15-07-05)

作者(Author):徐祖新;郭少斌;

Email:

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