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Multi-effect lifting pressurizing device for drilling tool

The invention provides a multi-effect lifting pressurizing device for a drilling tool, and relates to a drilling assisting device. The multi-effect lifting pressurizing device for the drilling tool comprises a cylinder sleeve and a hydraulic conversion device; the cylinder sleeve is a hollow cylinder body of which two ends are opened; the hydraulic conversion device comprises a telescopic joint, a telescopic rod, a lower joint and a sealing ring I; the telescopic joint is fixed to the top part of the telescopic rod; the lower joint is fixed to the bottom part of the cylinder sleeve; the telescopic rod passes through the lower joint, and the tail part of the telescopic rod is inserted into a cavity in the cylinder sleeve; the sealing ring I is arranged at the tail part of the telescopic rod and is in contact with the inner wall of the cylinder sleeve. According to the multi-effect lifting pressurizing device for the drilling tool, the pressure difference is generated by reducing, then the pressure is transmitted to a drill bit through the telescopic rod and a telescopic rod, the uniformly-downwards power is continuously applied to the drill bit, and the rigid pressure of a drill collar to the drill bit is converted into hydraulic pressure; therefore, the drill bit can be protected well by the uniform pressurizing, and as a result, the purposes of high speed and low cost can be achieved.
Owner:刘岩
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