靖边油田李家城则区长6储层特征研究

Characteristics of Chang-6 reservoirs in Lijiachengze area of Jingbian Oilfield

根据岩心、薄片、压汞、物性等资料,研究了李家城则区长6储层特征。长6储层岩石类型为细粒长石砂岩,储层物性极差,属于致密储层;储层平均面孔率为3.6%,孔隙类型以粒间孔和溶孔为主,综合评价认为主要以Ⅲa类储层为主,其次为Ⅱb类和Ⅲb类储层。

The characteristics of Chang-6 reservoir in Lijiachengze area are observed by analysis of core,thin slice,mercury pressure and physical property.The results show that the Chang-6 reservoir rocks are fine-grained feldspar sandstone,the properties of the reservoir is poor,it belongs to the tight reservoir.The face average rate of thereservoir is 3.6%,and the pores are mainly composed of intergranular and dissolved ones.The comprehensive evaluation shows that the reservoir consist of IIIa reservoir,followed by IIb and IIIb reservoir.