平面非均质性对面积波及系数的影响  

On the Effect of Areal Heterogeneous on Areal Sweep Efficiency

作　　者：喻秋兰[1] 唐海[1] 吕栋梁[1] 刘春志[1] 余林瑶[1] 

机构地区：[1]西南石油大学,成都610500

出　　处：《重庆科技学院学报（自然科学版）》2011年第5期59-61,共3页Journal of Chongqing University of Science and Technology：Natural Sciences Edition

摘　　要：以五点井网渗流单元为例,应用二维两相黑油模型对均质地层和六种不同平面非均质分布地层的水驱面积波及系数进行了数值模拟计算。结果表明,不同的平面非均质分布可导致非均质地层在同一含水率下的面积波及系数大于或小于均质地层的面积波及系数,并且使其达到完全驱替时的含水率高于或低于均质地层的含水率。在实际的油田开发方案设计中,根据不同平面非均质分布对水驱面积波及系数的影响结果合理地部署注采井网,能够减小平面非均质对开发不利的影响,提高面积波及效率。Taking five-spot seepage unit for example,this paper discusses a numerical simulation calculation of water flood sweep efficiency for a homogeneous formation and heterogeneous formations with six different kinds of areal distribution by using 2D and two-phase black oil model. The results suggest： Different areal heterogeneous distribution can make areal sweep more or less efficient in heterogeneous formation than that in homogeneous formation under the same water cut, and make its water cut higher or lower than that in homogeneous formation when wholly displaced. Therefore, areal heterogeneous distribution is one of the important factors affecting areal sweep efficiency. In the real field development plan, according to the impact of different areal heterogeneous distribution, deploying the flood pattern reasonably can decrease areal heterogeneity＇s unfavorable effect on the development and improve the areal sweep efficiency greatly.

关 键 词：面积波及系数 平面非均质性 含水率 数值模拟 

分 类 号：TE357[石油与天然气工程—油气田开发工程]