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介绍了一种与正电胶钻井液配伍的降滤失剂,分析了它的反应机理,并对该产品的性能进行了评价。结果表明,该产品对正电胶钻井液的流变性影响很小;抗盐性能好(抗15％盐),并具有一定的抗高温分散和抗热解能力。
A fluid loss additive compatible with positive rubber drilling fluid was introduced. Its reaction mechanism was analyzed and the performance of the product was evaluated. The results show that the product has little influence on the rheological properties of the positive gel drilling fluid, good salt resistance (anti-15% salt), and has certain high temperature resistant dispersion and pyrolysis resistance.