川西新场须五致密储层微观孔隙结构特征  

Characteristics of Microscopic Pore Structure of Xu 5 Tight Reservoir in Xinchang,West Sichuan

作　　者：刘加杰[1] 张霖[1] 钟颖[1] 

机构地区：[1]四川盐业地质钻井大队,四川自贡643000

出　　处：《四川地质学报》2017年第2期250-252,共3页Acta Geologica Sichuan

摘　　要：川西新场须五段为页岩,地层、砂岩不等厚互层,为典型陆相非常规致密储层,兼具致密气和页岩气特性,储层条件异常复杂。为高效开发该类储层,有必要对该类储层孔隙结构特征进行研究,为该类储层开发技术的发展提供依据。通过环境扫描电子显微镜(SEM)和压汞实验测试分析认为:须五储层孔隙结构复杂,物性条件较差,非均质性较强;孔隙类型以有机孔、溶蚀孔、晶间孔发育为主,泥质碎片间微裂缝发育次之;孔径主要分布于0.1~1μm,孔喉分布偏于细歪度,分选性较好,含大量的纳米级孔隙。The Xu 5 reservoir in Xinchang, Sichuan is a typical terrestrial unconventional gas reservoir with both shale gas and fight gas. It is necessary to research into its pore structure in order to develop this kind of reservoir effectively. SEM and mercury penetration experiment indicate that the Xu 5 reservoir has complex pore structure with very strong heterogeneity, pore size of 0.1-1 μm, fine skewness of distribution of pore throat, good sorting and development of nanometer pore.

关 键 词：储层 须家河组 孔隙结构 非常规气藏 新场 

分 类 号：P618.13[天文地球—矿床学]