长春岭沿江地区扶余油层储层微观特征分析

从储层的岩性、成岩作用、孔隙类型及影响孔隙结构的因素等方面,对长春岭地区扶余油层的孔隙结构特征进行了分析,揭示了该储层的微观特征。研究结果表明,该储层以岩屑石英砂岩及长石石英砂岩为主,结构成熟度低。成岩作用类型多样,成岩阶段为早成岩阶段A期～中成岩阶段A1期。孔隙类型以原生粒间孔为主,有少量溶蚀孔。孔隙结构以粗孔粗喉型为主,少量中孔中喉型。压实作用、岩石粒度及泥质含量是影响研究区储层孔隙结构的主要因素。

Microcosmic characteristic analysis of Fuyu reservoir in Changchunling

The pore structure character of reservoir of Fuyu in Changchunling was analyzed by studying the effect of lithology,diagenesis,pore types and clay minerals on pore structure.The micro-features of the reservoir are revealed.Reservoir lithology is mainly lithic quartz arenite and felds pathic quartz arenite,which has low textural maturity.It has various kinds of diagenesis types and its diagenesis stage belongs to A stage of early diagenesis to A1 stage of middle diagenesis.Original inter-granular pore is major pore type along with a few secondary pores among types of pore in the reservoir.Porestructure is mainly large pore with large throat,a few being medium pore with medium throat.Diagenesis,granularity and shale content have main effect on pore structure.