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在油藏描述过程中 ,由地震解释出的三维地质模型一般产生几十万至几百万个网格数据体 ,由于目前计算机水平的限制和工作效率及费用等方面的考虑 ,需要对该数据体进行合理的粗化。用严格满足渗流流动规律的调和平均方法处理相邻网络之间的渗透率 ,这样求解渗流力学方程组得到的结果与一维理论解完全相符 ;对辽河油田某一大型油藏进行粗化后进行数值模拟 ,结果表明全油藏累积产油量、累积产水量的拟合误差均比较理想。该粗化方法可以应用在整装油田的大规模数值模拟运算上
In the process of reservoir description, the three-dimensional geological model interpreted by seismic data generally generates hundreds of thousands to millions of grid data bodies. Due to the limitations of the current computer and the consideration of work efficiency and cost, the data Body reasonable roughening. The permeability of adjacent networks is treated by the harmonic averaging method which strictly meets the seepage flow law. The results obtained by solving the seepage mechanics equations are completely consistent with the one-dimensional theoretical solutions. After roughening a large oil reservoir in Liaohe Oilfield Numerical simulation shows that the fitting error of cumulative oil production and cumulative water production are all ideal. The roughening method can be applied to large-scale numerical simulation of a fully assembled oilfield