Bionic polymer for stabilizing well walls, and preparation method and drilling fluid thereof

一种用于井壁稳定的仿生聚合物及其制备方法和钻井液

Abstract

本发明公开了一种用于井壁稳定的仿生聚合物及其制备方法和钻井液。该聚合物含有作为主链的羧甲基壳聚糖和接枝在主链上的源自多巴胺的基团。本发明的聚合物能够提高井壁泥页岩强度、封堵井壁泥页岩孔隙并降低钻井液滤失量,从而起到在钻井过程中稳定泥页岩地层井壁的作用。

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