针对钻井过程中常见的井下卡钻事故，研制了新型全液压式随钻震击器。

In light of the commonly seen downhole breakdown of drilling pipe sticking in the drilling process, the new-type fully hydraulic while-drilling bumper sub was developed.

youdao

针对钻井过程中常见的井下卡钻事故，研制了新型全液压式随钻震击器。

In light of the commonly seen downhole breakdown of drilling pipe sticking in the drilling process, the new-type fully hydraulic while-drilling bumper sub was developed.

youdao