反循环钻进井底净化的研究_中国矿权网 关键词： 反循环；钻屑；井底净化；模型；压持效应[gap=716]Key words ： reverse circulation; cuttings; bottom hole flushing ; model; cutting-hold effect
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reverse circulation valve [油气] 反循环阀
reverse circulation drill 反循环钻机
reverse circulation flushing 反循环冲洗
Reverse circulation bored pile 反循环法钻掘桩
reverse circulation junk basket 反循环打捞篮
pool water reverse circulation 逆流式循环 ; 逆流式循环方式
reverse circulation drilling 反循环洗孔钻进
reverse circulation sub 反循环接头
GCF-20A reverse circulation percussive rotary drill rig is a multi function drill rig with percussive drilling as the main means and rotary drilling as supplemented.
0a型冲击-回转反循环工程钻机是以冲击钻进为主、回转钻进为辅的多功能钻机，可适应软、硬岩石等不同地层钻进的要求。
The paper introduces the typical examples for resolving these problems by air-lift reverse circulation drilling technology.
介绍了应用气举反循环钻进工艺解决这些疑难技术问题的成功案例。
Also a CBA local air reverse circulation tool is designed with the required air pressure and consumption calculation formula given.
本文特别研究设计了CBA型局部气举反循环钻具，对钻进所需的空气压力和压气量给出了计算公式。
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