非均质性对聚合物驱开发指标的影响

应用ECLIPSE软件,选取大庆油田采油一厂已结束注聚的北一区中块的典型井组,利用其静态资料数据,定量研究了纵向层间非均质性、纵向层内非均质性、平面非均质性三个方面非均质性对聚驱开发效果的影响.研究结果表明:三种非均质性对聚驱的驱油效果均有影响.其中,纵向层间非均质性影响较大,渗透率变异系数Kv在0.6-0.8之间聚驱效果均较好;层内非均质性的影响体现在隔层的稳定性,层内若存在2个隔层,则上、下2隔层的连续性对聚驱影响不同,上部隔层连续时,聚驱效果较好,下部隔层的影响不大;平面非均质性的影响呈现多样化.

The Influence of Reservoir Heterogeneity to Development Index of Polymer Flooding

This paper choose the static data of the typical well group of No.1 oil recovery plant in Daqing oilfield, apply ECLIPSE numerical simulator software, quantitatively compare the effect of three kinds of inhomogeneity to development index of polymer flooding (vertically interformational, vertically intraformational and areal heterogeneity). The research result shows that, the effect of three kinds of inhomogeneity to polymer flooding really exists and are different, of which the effect of vertically interformational heterogeneity is biggest, when the coefficient of permeability variation is between 0.6 and 0.8, the effect of polymer flooding is better; vertically intraformational heterogeneity display on the stability of barrier bed, of which the upper barrier bed is continuous, the effect of polymer flooding is better, the underlayer influence not too; the effect of areal heterogeneity present diversification.