微观非均质性对微观规模剩余油分布的影响

微观非均质性指砂体的孔隙、喉道大小及均匀程度、孔隙喉道的配置关系和连通程度，它直接影响着注入水的微观驱替效率，从而控制着孔隙结构中微观规模剩余油的分布。文中以胡12块为研究区，选取最大连通孔喉半径、孔喉中值半径等6个参数来说明注水开发前后微观非均质性对微观规模剩余油的影响。

Micro Anisotropies Influences Distribution of Micro Scale Residual Oil

Micro anisotropy refers to sand porosity, throat size, homogenous level, and coordination relations of porosity and throat and interconnection degree. It has direct effects on displacement efficiency of inputted water and controls distribution of micro scale residual oil in porosity structure. We regard Hu12 Block as research region in the article and select six parameters such as maximum interconnection radius of porosity and throat, median radius of porosity and throat, etc. We use parameters to explain how micro anisotropies influences micro scale residual oil during water injection and natural depletion exploitation.