一种过旋导承压堵漏纤维及制备方法
本发明属于钻井工作液钻井液技术领域,公开了一种过旋导承压堵漏纤维及制备方法,将pH值为4‑6或8‑12的分散剂溶液与疏水改性进行水解反应,获得反应产物,将反应产物与植物纤维进行偶联反应,干燥,得到钻井液用过旋导承压堵漏纤维。通过疏水改性的植物纤维增强在钻井液中的分散性,能够降低堵漏纤维的聚集程度,同时堵漏纤维的不规则棒状结构使其更易沿钻井液流动方向平行运移、顺利通过旋转导向工具的筛网,并且堵漏纤维具有较好的承压堵漏能力。
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