聚合物驱是指向地层中注入聚合物进行驱油的一种增产措施。在宏观上，它主要靠增加驱替液粘度，降低驱替液和被驱替液的流度比，从而扩大波及体积；在微观上，聚合物由于其固有的粘弹性，在流动过程中产生对油膜或油滴的拉伸作用，增加了携带力，提高了微观洗油效率。
针对油田采出污水外排的问题，开展了污水稀释聚合物驱油研究。
Aiming at the problem of produced water drainage of oil fields, this paper performs a study on displacement with polymer solution diluted with produced water.
为保证聚驱效果，聚合物驱油过程中一般采用低矿化度清水配制聚合物溶液。
To ensure the effect of polymer flooding, polymer flooding process generally use low salinity water for preparation of polymer solution.
因此，确切地说聚合物驱可以提高波及效率，但不能认为聚合物驱可以提高驱油效率。
Therefore, we can make sure that polymer flooding can obviously improve a sweeping efficiency, but do not think it can improve oil displacement efficiency.
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