广安地区须家河组储层物性主控因素分析

Analysis of Main Control Factors of Reservoir Physical Properties of Xujiahe Formation in Guang'an Area

依据铸体薄片、扫描电镜、物性、孔隙结构等资料,对广安地区须家河组储层物性发育控制因素进行了探讨。研究表明,须家河组砂岩总体上具有特低孔特低渗～低孔低渗特征,纵向上孔渗性较好的砂体层段成为有效储层;沉积微相、成岩作用、裂缝是控制储层的主要因素。

Based on the research of casting thin sections,scanning electron microscopy(SEM),physical properties,pore structure and other information of Xujiahe Formation in Guang'an Area,the controlling factors of the development of the reservoir property are discussed in the region.Study shows that sandstone of Xujiahe Formation has the characteristics of super-low porosity and permeability~ low porosity and low permeability,good sand layers(have a better porosity and permeability) are effective reservoirs longitudinally;sedimentary microfacies,diagenesis,fracture are the main controlling factors of the reservoir.