For the reservoir with high water cut, alternative injection of gas and solution can improve sweep efficiency, increase producing reserves and recovery factor.
采用气液交替注入技术可以提高高含水油藏的波及效率，改善油层的动用程度，达到提高原油采收率的目的。
Prepositive polymer slug displacement can decrease the effect by the formation heterogeneity, prevent the gas breakthrough and improve the displacement sweep efficiency of the injective gas.
对于地层非均质性的影响，通过注入聚合物段塞调驱，能起到防止气窜，增加注入气驱扫效率。
Results show that polymer flooding can improve the producing reserves effectively, extend the plane sweep efficiency, reduce the difference between layers and balance the in-layer vertical producing.
结果表明，聚合物驱可有效地提高油层的动用状况，扩大平面波及系数，减小层间差异，使层内纵向动用更加均匀。
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