“secondary well control technology”的概念、定义、翻译、参考文献-科学参考

单词	secondary well control technology
释义	secondary well control technology Encyclopedia 工学二级井控技术释 secondary well control technology二级井控技术当一级井控失效后，井内的液柱压力小于地层压力，井底处于欠平衡状态，此时采取关井，控制节流阀的开度等措施实现节流循环，在井口造成一定的回压，利用该回压与井内剩余液柱压力之和平衡地层压力，抑制地层流体向井内的侵入，同时将井内的地层流体排出、重浆压井，从而重建井眼与地层之间平衡关系，恢复正常钻井作业的井控技术。
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