The percussion and rotarydrilling of hydraulic impactor may heighten drilling velocity several times, when it is been applying in drilling geothermic well.
液动冲击器冲击回转钻进技术应用于地热井钻进中，可以数倍提高钻进速度。
2
Hydraulicrotary-percussion drilling is one of five important drilling techniques recently. Itstechnique nucleus is hydro-percussive tools.
作为当今五大钻探技术之一的液动冲击回转钻探的技术核心是液动冲击器。
3
Regarding to the problem, XC-82 hydraulicrotary impact drilling tools and matching bits are developed by Daqing Geophysical Exploration Corporation.