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阐述了周期注水采油机理， 研究了喇嘛甸油田高含水后期周期注水的组合方式和合理参数，并通过典型实例证明， 周期注水是改善非均质油层高含水后期水驱开发效果的一种有效方法。
The mechanism of periodic waterflooding and oil recovery is expounded, and the combination and reasonable parameters of periodic waterflooding in late stage of high water cut of Lamadian Oilfield are studied. It is proved by typical examples that periodic waterflooding is an effective method to improve the development effect of waterflooding in high water cut stage of heterogeneous reservoirs .