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One-Way Shock Absorber

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.

The hydraulic shock absorber is connected between drill bit and drillcollar, the torque is transferred from top drill string to mandrel. Thespline transfers torque to spline outer barrel, oil cylinder and lower sub, then drive drill bit to rotate.The hydraulic shock absorber is connected between drill bit and drillcollar, the torque is transferred from top drill string to mandrel. Thespline transfers torque to spline outer barrel, oil cylinder and lower sub, then drive drill bit to rotate.The hydraulic shock absorber is connected between drill bit and drillcollar, the torque is transferred from top drill string to mandrel. Thespline transfers torque to spline outer barrel, oil cylinder and lower sub,then drive drill bit to rotate.

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