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以取心井的岩石薄片、铸体薄片、扫描电镜、物性、毛管压力曲线等分析资料为基础 ,结合储层物性测井参数解释结果 ,对辽河油田沈 84块沙三下 ( S4 3 )层段储层从岩性组成、成岩作用、物性特征、孔隙类型及孔隙结构、非均质性等方面进行了综合评价 ,认为该储层为一套中 -高孔、中渗储层 ,其物性主要受沉积微相及成岩作用等因素影响 ,具较强的层内、层间和平面非均质性 .综合储层的岩性、物性、成岩后生作用和孔隙结构等特征 ,对沈 84块沙三下层段储层进行了分类 ,将其划分为 I(好 ) ,II(中等 ) ,III(差 ) ,IV(极差 )四大类 ,区内主要发育 II,III类储层 .
Based on the analysis data of rock slices, castings, scanning electron microscope, physical properties and capillary pressure curves of coring wells, and combining the interpretation results of reservoir physical well logging parameters, The reservoir has been comprehensively evaluated from lithology composition, diagenesis, physical property, pore type and pore structure, heterogeneity and so on. It is considered that the reservoir is a set of medium-high porosity and medium permeability reservoir whose physical properties Mainly affected by sedimentary microfacies and diagenesis and other factors, with strong intralayer, interlayer and plane heterogeneity.Comprehensive reservoir lithology, physical properties, diagenesis and pore structure and other characteristics of Shen 84 The reservoirs in the lower part of Shahejie Formation are classified into four categories: I (good), II (medium), III (poor) and IV (very poor). Type II and III reservoirs are mainly developed in this area.