摘要本文针对歧口18-2油田钻完井过程中易发生水锁伤害的问题,通过在钻完井液体系中加入乳化石蜡、零渗透剂、防水锁剂,提高体系储层保护性能。研究表明新钻完井液滤液油水界面张力低于1 m N/m,钻井液体系承压能力高于7 MPa,岩心渗透率恢复率超过85%。现场应用于4口调整井,投产后产油量均达到或超过配产。
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