周期注水效果及其影响因素

Periodic water flooding and its affecting factors

针对江苏油田地质特征和水驱开发现状,利用现代物理模拟方法分析了周期注水效果及其影响因素.实验结果表明:与常规注水相比,周期注水平均可提高采收率6.8%,周期注水注入时机和布井方式等因素会影响驱油效果;当综合含水率为40%,70%和90%时,实施周期注水增油效果较好.

This paper is aimed at the geological characteristics of Jiangsu oil field and the present condition of water flooding development, and modern physics simulation method is used to probe into periodic water flooding and its affecting factors. The experimental results show, compared with conventional water flooding, the enhanced oil recovery by periodic water flooding is 6.8% on average. The flooding efficiency of periodic injection will be affected by many factors such as the injection time and distribution patterns of well nets and so on. The oil recovery of periodic water flooding is better than that of conventional water flooding when it is carried out in the integrated water cut of 40%, 70% and 90%.