在使用连续管柱的情况下，在含气油井条件下的安全工作能力使得流体在任何时刻都能被泵送而与位置和移动方向无关。

The ability to work safely under live well conditions, with a continuous string, enables fluids to be pumped at any time regardless of the position or direction of travel.

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介绍了液压加速器和震击器的结构、工作原理以及震击管柱运动规律与动力性能。

The design feature and working principle of the hydraulic accelerator and the fishing jar art, introduced. The motion pattern and dynamic performance of the jar pipe string are analyzed.

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简要介绍了管柱伸缩器的结构、工作原理及用途。

The structure, work principle and application of tubing telescopic unit is introduced.

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