万友利;张哨楠;古娜;丁晓琪;孟祥豪;

• 1:成都理工大学油气藏地质及开发工程国家重点实验室

• 2:成都理工大学能源学院

• 3:西南石油大学资源与环境学院

• 4:成都理工大学沉积地质研究院

摘要(Abstract)：

为寻觅致密砂岩储层中发育的优质储层提供理论依据,分析铸体薄片鉴定、扫描电镜资料、结合压汞及物性资料.结果表明:塔里木盆地塔中顺9井区志留系柯坪塔格组沥青砂岩中发育的黏土矿物薄膜形成于成岩早期(同生成岩期),以自生式为主,含少量原生式黏土膜;黏土膜的发育与分布受到沉积作用、成岩环境及成岩温压系统的共同控制,早成岩期(同生期)发育的黏土膜在中—低压实强度下对储层的孔隙保护具有一定的建设性作用,因其占据一定的孔喉空间,又降低储层的渗透率,随着埋深增大,黏土膜矿物成分也逐渐向伊利石转化并分布在孔隙中,伊利石赋存状态也由蜂窝状变为毛发状、丝网状及搭桥状,分割甚至堵塞孔隙,使得储层砂体渗透率大幅度降低;沉积环境中的沉积微相对黏土膜发育与分布的控制体现在中—下临滨微相中黏土膜较为常见,而在上临滨—前临滨微相中,因水体的淘洗降低储层砂体中的泥质含量,黏土膜不发育,储层砂体中的黏土膜含量制约储层质量,发育黏土膜的井段储层孔隙度大于不发育黏土膜的井段,黏土膜含量在0.5%～5.0%井段的储层孔隙度要好于黏土膜含量超过5.0%井段的.

关键词(KeyWords)：黏土膜;原生式;自生式;储层砂体;柯坪塔格组;塔里木盆地

Abstract:

Keywords:

基金项目(Foundation):国家自然科学基金项目(41272168);; 国家“十二五”重大科技专项(2011ZX05002-003);; 中国博士后科学基金项目(2012M511941)

作者(Author):万友利;张哨楠;古娜;丁晓琪;孟祥豪;

Email:

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