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 downhole completion component that enables injection of treatment chemicals or inhibitors into the production conduit.
能使处理剂或抑制剂注入生产导管的井下完井部件。
Fishing techniques for downhole wireline and cables are an important component of petroleum engineering.
井下绳索类落物打捞工艺技术是石油井下工程事故处理工艺的重要部分。
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