downhole closed loop 井下闭环
Specially it is essential to downhole closed-loop automated drilling and intelligent drilling in the future.
尤其对于导向钻井、井下闭环自动钻井以及将来的人工智能钻井更是必不可少的重要一环。
The downhole closed-loop drilling technology is a new developing technology. It is indispensable to the success of extended reach well.
井下闭环钻井技术是近年来在国内外得到普遍重视的新技术，是大位移井钻井必不可少的技术。
The steering assembly is the key tool of the downhole closed-loop drilling system, and its mechanics properties are the base of downhole closed-loop control.
作为井下闭环钻井系统核心部分的下部导向钻具组合的力学特性，则成为形成井下闭环控制的基础。
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