Optimizing method of longitudinal grid size of extra-high-water-cut-period oil reservoir model

The invention provides an optimizing method of the longitudinal grid size of an extra-high-water-cut-period oil reservoir model. The optimizing method of the longitudinal grid size of the extra-high-water-cut-period oil reservoir model comprises the steps that 1, the reasonable grid sizes under different physical properties are obtained; 2, reservoir thickness influence factors are obtained; 3, viscosity influence factors are obtained; 4, water containing influence factors are obtained; and 5, the longitudinal reasonable grid size is calculated. The optimizing method of the longitudinal grid size of the extra-high-water-cut-period oil reservoir model has the characteristics that the principle is simple and the operability is high, the remaining oil description precision is improved for anextra-high water cut period, and the optimizing method is extremely important for describing the reservoir heterogeneity and fluid seepage rules. 本发明提供了种特高含水期油藏模型纵向网格尺寸的优化方法，该特高含水期油藏模型纵向网格尺寸的优化方法包括：步骤1；得到不同物性下合理网格尺寸；步骤2，得到储层厚