川东南志留系石牛栏组成岩作用研究  

Study on Diageneis of Silurian Shiniulan Formation,Southeastern Sichuan Basin

作　　者：周大志[1] 李国蓉[1,2] 罗鹏[1] 张德民[1] 汤鸿伟[1] 

机构地区：[1]成都理工大学能源学院,四川成都610059 [2]"油气藏地质及开发工程"国家重点实验室.成都理工大学,四川成都610059

出　　处：《天然气技术》2009年第6期7-11,77,共5页NATURAL GAS TECHNOLOGY

基　　金："四川盆地东南重点层位沉积相与储层预测"国家自然科学基金委员会与中国石油化工股份有限公司联合基金资助项目(批准号:40739903)

摘　　要：通过对岩心、普通薄片、铸体薄片等多种资料的综合研究,详细阐述了主要成岩作用的表现形式及特征,分析了其对储层的影响,并对成岩序列、成岩阶段进行了划分。石牛栏组储层在其埋藏过程中经历了相对简单的成岩演化过程,强烈的压实作用和胶结充填作用破坏了几乎所有的原生孔隙和部分次生孔隙,使研究区内碳酸盐岩成为致密型储层。经过同生期、早成岩期、晚成岩期及构造期4个成岩阶段的演化,石牛栏组储层的储集能力大大降低。In this paper, a comprehensive research on core, conventional and casting thin section data is presented at first; and then, both pattern and characteristics of the main diagenesis are illustrated in detailed and their effect on reservoir is also analyzed; at last, both diagenetic sequence and stage are also classified. Shiniulan Formation reservoir experiences relative simple diagenetic evolution during its burial process; and strong compaction and cementation destruct all primary porosity and part secondary porosity. As a result, carbonate rock in the studied area becomes a kind of tight reservoir. The reservoir capacity in Shiniulan Formation decreases a lot after four diagenetic evolutions including syngenetic stage, early diagenetic stage, late diagenetic stage and tectonic stage.

关 键 词：志留系 石牛栏组 成岩作用 成岩阶段 

分 类 号：P618.13[天文地球—矿床学]