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聚合物被作为润滑剂使用在钻井液和完井液中，用来降低地层与钻具或工作套管之间的摩擦，并且性能好、经济、适用范围广泛。同时它们也能破坏地层、降低原油的产能。在钻井液中的聚合物能够促使泥饼的形成，由于所形成不易被除去的泥饼粘附在储层砂岩表面，并且具有象粘土一样的自身之间的高吸咐性，所以除去它是非常困难的。钻井液和完井液中最常用的聚合物：淀粉类、纤维素类和树脂类。它们已被广泛应用在钻井、强化（压裂）采油和完井工程上。
Polymers are used as lubricants in drilling fluids and completion fluids to reduce friction between the formation and the tool or casing, and are good, economical, and suitable for a wide range of applications. At the same time they can also damage the formation and reduce the production capacity of crude oil. The polymer in the drilling fluid is able to promote the formation of the cake, which is removed because it forms a hard-to-remove cake that adheres to the reservoir’s sandstone surface and has a high sorption capacity between itself like the clay Very difficult. The most commonly used polymers in drilling and completion fluids: starches, cellulosics and resins. They have been widely used in drilling, strengthening (fracturing) production and completion engineering.