根据稳定渗流过程中质量流量的连续性特征 ,对精细油藏描述数据的粗化处理方法进行了研究。结果表明 ,串联网格平均渗透率为细网格渗透率的调和平均 ;粗网格的平均渗透率与所设定的流入端与流出端的压差大小无关 ,只与细网格的渗透率和几何尺寸有关 ;某一方向上渗透率的粗化结果与另外两个方向上渗透率分布有关。油藏数值模拟结果表明 ,粗化后的地质模型与原模型是等效的 On the basis of fluid mass rate equivalent in stead state flow, an up-scaling technique for analyzing data of fine reservoir description was proposed. The analysis results show that the average permeability of grids in series connection can be calculated harmonically, and the coarse grid permeability has something to do with permeability of fine grids, and nothing to do with the given pressure difference between inflow end and discharge end. The up-scaled grid permeability will be affected by fine grid perm...