downhole boosting device 井下增压装置
downhole jet boosting device 射流式井下增压装置
downhole hole-closure device 井下封井器
A downhole device used to control fluid flow under downhole conditions.
用于在井下条件下控制流体流动的井下装置。
A downhole device that enables circulation through the tubing string and associated annulus.
能够经油管柱和相关的环形空间实现循环的井下装置。
A mechanical device used downhole to deliver an impact load to another downhole component, especially when that component is stuck.
井下使用的机械装置，用于向另一个井下部件传递一种冲击载荷，尤其当该部件被卡住时。
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