Torque-transferable self-sealing drilling tool lifting device

Abstract

A twist-transmitting self-sealing drilling tool lifting device includes a joint body, a floating core tube, a stop valve, a spring, a gasket, a twist-transmitting slip, a sealing ring, a lock cap, a flat key, etc. It is connected with the driving shaft of the drilling rig rotator. After the torque transmission slip installed on the joint body clamps the drilling tool, the torque can be transmitted through the axial corrugated strip on the torque transmission slip. It solves the problem that the shackle is frequently used in the routine operation and the continuous shackle operation is complicated; the floating core tube is installed in the cavity of the joint body, a spring is installed on the outer side, and a sealing gasket is installed at the lower end, and the floating core with the sealing gasket is installed by the spring. The pipe is tightly pressed against the end face of the drill tool joint, and high-pressure oil is injected through the shut-off valve to increase the pressure to realize the sealing between the lifting device and the drill tool. During the tripping operation, the mud can be directly passed into the hole for reaming, which solves the need for conventional operations. The problem that the drilling tool lifting device needs to be replaced with a conventional adapter can be used to cut the hole, which reduces the auxiliary work time.

Description

technical field [0001] The invention relates to the technical field of quick tripping and tripping operations of drilling rigs, in particular to a self-sealing drilling tool lifting device capable of transmitting torsion. Background technique [0002] At present, elevators are mainly used to complete the tripping operation in drilling construction. Since the elevators can only bear the lifting force and do not have the ability to transmit torque, hydraulic tongs must be used to assist in continuous screwing and breaking, which increases the complexity of the operation. If there is jamming during the tripping process and punching and reaming are required, the elevator does not have the function of connecting and sealing the drilling fluid, so the upper drill pipe must be reconnected, the pump is turned on and the turntable is lifted up and down to complete the punching. Holes and eyelets not only increase the auxiliary operation time, but also increase the labor intensity of ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a torque-transmissible self-sealing drilling tool lifting device to solve the problems caused by the inability of the elevator to transmit torque and the lack of ability to connect and seal drilling fluid during the conventional tripping operation of the drilling rig. Auxiliary work takes a long time and the operation is complicated

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