大邑构造须家河组致密砂岩成岩作用及优质储层形成机理探讨  

Diagenesis of tight sandstone and the development mechanism of favorable reservoir of Xujiahe Formation in Dayi structure

作　　者：刘腾[1] 彭军[1] 王伟东[1,2] 

机构地区：[1]西南石油大学资源与环境学院,四川成都610500 [2]大庆油田有限责任公司,黑龙江大庆163000

出　　处：《油气地球物理》2013年第2期25-29,共5页Petroleum Geophysics

基　　金：中国石油科技创新基金项目资助(2010D-5006-0103)

摘　　要：本文在大量测试分析资料的基础上,详细研究了大邑构造须家河组致密砂岩的主要成岩作用特征及其对储层物性的影响,建立了该区致密砂岩储层的成岩演化序列及孔隙演化模式,探讨了该区优质储层的发育模式。研究认为,压实作用、胶结作用是造成该区储层物性降低的主要因素,溶蚀作用形成的次生孔隙使储层物性得到改善,有效微裂缝的发育是优质储层形成的关键因素。Based on a large number of the testing data, the diagenesis of tight sandstone of Xujiahe Formation in Dayi structure and their impacts on the physical properties of the reservoir are analyzed, the sequences of the diagenetie evolution and patterns of the porosity evolution of the tight sandstone reservoir are set up, and the development patterns of the favorable reservoir in the area are researched also. The conclusion is that the compaction and cementation are the dominant factors to affect the physical properties of the reservoir in the area, the physical properties of the reservoir are improved by the secondary pores resulted from denudation, and the development of the effective micro-fracture is the key to form the favorable reservoir.

关 键 词：致密砂岩储层 成岩作用 储层形成机理 大邑构造 

分 类 号：TE373[石油与天然气工程—油气田开发工程]