靖边油田南部地区长6油层组储层特征研究

Study on Reservoir Characteristics of Chang 6 Oil Formation in Southern Area of Jingbian Oilfield

本文在大量的分析化验资料的基础上,从储层的岩石学特征、孔隙类型和结构特征、物性特征等方面入手,对长6油层组的储层特征进行分析。分析表明:研究区长6油层组储层主要为细粒长石砂岩,储层孔隙类型以剩余粒间孔隙、胶结物溶蚀孔隙、长石粒内溶蚀孔隙为主;储层物性较差,为典型的特低孔隙度、特-超低渗透率(致密)储层。

Based on the analysis of laboratory data, reservoir characteristics of Chang 6 oil formation were analyzed from the aspects of petrological characteristics, pore type and structural characteristics and physical properties of reservoir. The results show that the reservoir of Chang 6 oil formation is mainly fine feldspar sandstone, and the pore types of the reservoir are mainly composed of residual intergranular pores, cementation dissolution pores and feldspar granules, and the reservoir property is poor, it belongs to typical ultra-low porosity, special-ultra low permeability（dense） reservoir.