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。
A ball that is dropped or pumped through the wellbore tubulars to activate a downhole tool or device.
用于启动井下工具或装置、经井筒管子落下或泵入的球。
Method Mud invasion process is simulated with conventional three axis rock strength test device under same downhole pressure and temperature.
方法采用常规三轴岩石强度试验装置，进行井下温度压力条件下的泥浆侵入过程模拟试验。
In order to test the overall performance of a downhole jet boosting device, an experimental study is conducted on it.
为了测试射流式井下增压装置的整机性能，对该装置进行了地面模拟测试和整机试验研究。
In order to test the overall performance of a downhole jet boosting device, an experimental study is conducted on it.
为了测试射流式井下增压装置的整机性能，对该装置进行了地面模拟测试和整机试验研究。
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