Taking use of the shock absorber, it can raise the service life for drill bit and drill tool, speed up drilling, get rid of drilling jumping, well protect surface equipments and drilling tools.
所以在钻井作业中采用减震器，对于延长钻头使用寿命，加快钻进速度、克服严重跳钻、保证正常钻井、保护地面设备及钻具是十分可靠的。
A sharp tool, or bit, was hung from a rope and jerked up and down by men jumping on a spring-board.
粗绳子上挂着锐利的工具，即钻头，由踏板上跳跃的人把它拉起又放下。
A sharp tool, or bit, was hung from a rope and jerked up and down by men jumping on a spring-board.
粗绳子上挂着锐利的工具，即钻头，由踏板上跳跃的人把它拉起又放下。
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