The two ways shock absorbers are used to simultaneously slow down or eliminate thevertical or horizontal shock from drill string. It can reduce the damage due to shocking to drill bit,drilling tool and surface drilling tool so as to enhance drilling speed and reduce drilling cost.
The one-way shock absorber (bumper )is a kind of drilling tool.It can effect shock absorbing and shock reduction by means of elasticdeforming andanti-coagulationproduced from hydraulic oil under the outside force. Its advantages such as simple structure, reliable workingperformance and easy to maintain can well absorb shocking andvibrating load from drill strings during drilling operation. Therefore, using of shock absorber can raise in structure the service life of drill bit anddrill pipe, speed up drilling, get rid of drilling jumping, well protectsurface equipments and drilling tools.
