The shock tool is an important down hole tool in drilling operation. It utilizes absorbing fitting to absorb and decrease the stroke load, shock load and torque load in drilling so as to protect the bit and motor, decrease drill cost and increase drilling efficiency. BPM mainly produces Hydraulic Shock Tool, Bi-directional Shock Tool and Mechanical Shock Tool, which have the following characters.

      The Hydraulic Shock Tool is used to decrease and absorb the stroke load and shock load by hydraulic spring in order to protect the bit and the drill string.

      The Bi-directional Shock Tool adds screw structure compared with the Hydraulic Shock Tool. So it can decrease and absorb not only longitudinal direction shock and impact of drilling string but also cycle direction torsion shock and impact. Using this shock tool will realize the best adaptation of drilling pressure and rotation speed in the operation of drilling or coring.

      The Mechanical Shock Tool absorbs the shock load by stretch unit made of disc spring. It characters simple structures and stable performance, especially it can work in high temperature strata.