元坝须二段致密砂岩储层特征及影响因素  

Reservoir characteristics and its influential factors of tight sandstone from 2nd member of Xujiahe formation in Yuanba area

作　　者：姚勇[1] 谢润成[1,2] 徐浩 张冲[1] 吴一凡[3] 

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 [3]成都理工大学地球科学学院

出　　处：《石油地质与工程》2015年第3期31-34,146,共5页Petroleum Geology and Engineering

基　　金：国家自然科学基金(41202096)资助

摘　　要：元坝地区须二段致密砂岩是该区最主要的产气层,通过岩心、薄片、压汞等资料对其岩性、物性、储集空间类型及储层发育的影响因素进行了分析,研究表明须二段储层致密,整体物性差,储层主要受到构造作用、沉积作用、成岩作用和溶蚀作用的影响,构造作用强烈的地方储层更为发育、产气潜力大,陆上沉积部分比水下沉积部分更易形成优质储层,成岩作用主要为破坏作用、导致物性变差,溶蚀作用主要产生次生孔隙、改善储渗性能。The tight sandstone reservoir of 2nd member of Xjiahe famation is the main gas producing formation in Yuanba area.Based on the analysis of core,casting thin sections and mercury injection data,the studies on reservoir petrology characteristics,physical characteristics,reservoir space and the influential factors analysis of reservoir development have been carried out.The results show the reservoir is dense while the physical properties are poor.The reservoirs are mainly affected by tectonism,sedimentation,diagenesis and dissolution.There is a strong gas production potential where the tectonic movement is intense.The onshore part is easier to form a high quality reservoir than that of underwater.Diagenesis is mainly for damage to physical properties.Dissolution mainly produces secondary pores and it can improve the reservoir permeability reservoir performance.

关 键 词：元坝气田 须二段 储层特征 致密砂岩 影响因素 

分 类 号：P618.13[天文地球—矿床学]