水驱油田含水上升率主要影响因素研究与应用

The study on main influence factors of rate of water cut of wate-drive oilfield

含水上升率是研究含水上升规律的一项重要指标,可以判断一个油藏在某一含水阶段开发效果的好坏。那么通过研究含水上升率的影响因素,则可以分析油田开发效果好坏的原因。为此,利用数值模拟技术,开展了水驱油田含水上升率主要影响因素研究。结果表明,储层非均质性越强,含水上升率越大;当井网不完善时,含水上升率越大,而当井网后期变完善时,含水上升率又接近于理论含水上升率;当井网类型不同时,五点、直线行列、交错行列井网含水上升率相对反九点井网较高但含水上升率变化形态基本一致。这些结论对于油田开展下一步工作具有重要的指导意义。

The rate of water cut is an important index to study the regularity of water cut,which can be used to judge the development effect of wate-drive oilfield in a certain water cut stage. Then, it can be analyzed the reason of development effect of the oilfield by studying the influence factors of rate of water cut. Based on current research work, numerical simulation technology has been taken to carry out research work. The results indicate that the rate of water cut becomes greater as the reservoir heterogeneity is stronger.When well pattern is imperfect, the rate of water cut grows greater, but when well pattern is perfect in later stage, the actual water cut rise rate is close to the theoretical water cut rising rate.When the type of well pattern is different.The rate of water cut of five-spot pattern, the straight line pattern and staggered line-drive pattern is higher than that of inverted nine-spot pattern, but curve shape changes of the rate of water cut is basically the same. These conclusions have important guidance significance for further work of oilfield development.