特高含水期马20断块剩余油分布的数值模拟

兴隆台油田马20断块兴隆台层组构造复杂,开发历史长,作业措施频繁,已进入特高含水开发阶段,剩余油分布状况异常复杂.为解决此难点,采取了优选主力目标层,精细储量复算,优化网格,建立精细地质模型,岩石流体物性控制,精细动态数据控制,精细历史拟合等数值模拟研究技术措施,建立了各小层砂体剩余油饱和度等值图,定量分析了平面、纵向的水淹状况和剩余油分布规律,探索出针对特高含水期老油田不同剩余油潜力区分布特点进行可行性挖潜对策调整模式.

Numerical simulation study on remaining oil distribution of Block Ma 20 in the extremely high water cut period

In view of the complicated structure conditions of Block Ma 20 in Xinglongtai Formation with long development history,frequent workover measures and the remaining oil are sparsely distributed and extremely complicated in extremely high water cut period,a lot of numerical simulation measures are taken such as the main target formation optimization,the reserve re-estimation,the optimum gridding and the geological model build up,rock fluid property control,accurate historical matching.From this,the subunit sand residual oil saturation isopach are mapped,quantitative analysis are made on the areal and vertical water breakthrough and residual oil regulation.Finally,the feasible adjusting pattern strategies for production potential enhancement are found out for the different remaining oil potential area.