摘要
为了合理划分开发层系、选择注采系统、改善油田开发效果,有必要对海26断块储集层进行非均质性特征研究。在对岩心、铸体薄片以及测井等资料分析的基础上,以渗透率参数的变化为主线,结合孔隙度参数的变化来分析海26断块东营组一、二段(Ed1、Ed2)储集层的非均质特征。结果表明,区内Ed1、Ed2储集层砂体具有中-高孔、高渗的物性特征,层内非均质性强,层间非均质性及平面非均质性相对较弱。孔隙类型以粒间孔为主,喉道主要为孔隙缩小喉道。综合分析认为,海26断块Ed1、Ed2储集层为中等非均质性储集层。
In order to reasonably classify the layer series of development,select injection-production system and improve efficiency of oilfield development,it was necessary to study the reservoir heterogeneity of Fault Block Hai 26.Based on statistics of core,cast sections and well log data,combined with permeability and porosity parameters,the reservoir heterogeneity characters of the first and second members(Ed1and Ed2)of Dongying Formation in Fault Block Hai 26 were analyzed.The results show that the porosity is middle-high and the permeability is high in Ed1 and Ed2,intralayer heterogeneity is very serious and the interlayer and areal heterogeneity are relatively weak.Main pore types are primary intergranular pores,and the pore throat is mainly pore-shrinking type.It is considered that the reservoirs in Ed1 and Ed2are reservoirs with moderate heterogeneity.
出处
《长江大学学报（自科版）（中旬）》
CAS
2015年第2期10-14,2,共5页
Journal of Yangtze University(Nature Science Edition)
基金
国家科技重大专项(2011ZX05033-004)
关键词
非均质性
储集层
东营组
海26断块
断陷盆地
heterogeneity
reservoir
Dongying Formation
Fault Block Hai 26
fault basin
