王文之;杨跃明;张玺华;邹定永;马松华;孙奕婷;彭瀚霖;

• 1:中国石油西南油气田分公司勘探开发研究院

• 2:四川路桥矿业投资开发有限公司

摘要(Abstract)：

为明确四川盆地震旦系灯影组的储层特征及成因,以钻井岩心、薄片观察、扫描电镜和碳氧稳定同位素分析等资料为基础,分析研究区储层的储集空间类型及储层特征、成因。结果表明:灯影组储集岩类以凝块状云岩、砂屑云岩为主,储集空间以次生孔隙、溶蚀孔洞为特征;沉积相是储层的物质基础,藻丘和颗粒滩亚相控制储层在平面上的分布范围和规模;溶蚀是储层形成的关键,同生期溶蚀增加储层的比表面积,为后期岩溶提供有利的物性条件;表生期溶蚀控制优质储层在纵向上的分布,主要分布在距离不整合面100m以内;埋藏期溶蚀对储层总孔隙度改变不大,但使前期较分散的储层趋于富集。早期裂缝(第一~三期)为各期流体及烃类充注提供导引作用,晚期裂缝(第四~五期)改善灯影组储层的渗透能力。该结果对研究区气田的勘探和开发具有参考意义。

关键词(KeyWords)：震旦系;微生物;碳酸盐岩;灯影组;储层特征;储层成因

Abstract:

Keywords:

基金项目(Foundation):国家科技重大专项(2011ZX05004-005);; 中国石油天然气股份有限公司重大科技专项(2013E-050208)

作者(Author):王文之;杨跃明;张玺华;邹定永;马松华;孙奕婷;彭瀚霖;

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