Drill string anti-looseness device

Abstract

The invention discloses a drill string anti-looseness device which is provided with an inner ten-square tooth sleeve, an inner ten-square drum and an inner sleeve, wherein the outer surface of the inner ten-square tooth sleeve is a smooth circumferential surface; the upper half part of the inner surface is of an inner ten-square structure; the lower half part is of an inner-teeth structure; the inner ten-square drum is right embedded in the lower half part in the inner ten-square tooth sleeve; the periphery is provided with outer teeth; the inner surface is of an inner ten-square structure; the inner sleeve is embedded in the inner ten-square drum and the central part of the inner tooth of the lower half part of the inner ten-square tooth sleeve; the inner side of the of the inner sleeve is provided with inner teeth; the peripheral surface is provided with out teeth; the inner teeth at the lower half part of the inner-square tooth sleeve is engaged with the inner ten-square drum through the inner sleeve with inner and outer teeth; the lower end of the inner ten-square sleeve is provided with a groove; the groove is provided with an hole spring check ring for blocking the inner sleeve; and the inner ten-square tooth sleeve is provided with at least two disassemble bolts. The drill string anti-looseness device is applicable to be the anti-looseness device of a drill string of a drilling machine, is more complete in structure, and simple and convenient in operation, good in locking effect of the drill string, high in efficiency and low in cost and is safe and reliable.

Description

Technical field [0001] The invention belongs to the technical field of petroleum and geological drilling equipment, in particular to an anti-loosening device for a top drive system of a drilling rig, in particular to a new type of anti-loosing device for a top drive system. Background technique [0002] At present, in drilling operations, the top drive system of the drilling rig can effectively ensure that the thread between the drill pipe and the protective short connection is loosened while the top drive system of the drilling rig is being shaved, and it is necessary to prevent the main shaft and the IBOP from the internal blowout preventer. The drill string anti-loosening device for the thread loosening between the protective joint and the threaded joint. The commonly used structure is mainly composed of a tooth plate, a buckle, a buckle, and a disassembly bolt. The back of the tooth plate is rectangular and has a slope; the tooth plate is symmetrical It is arranged in the ins...

AI Technical Summary

Problems solved by technology

We found that in practical applications, since this anti-loosening device uses the friction between the tooth plate and the contact surface for anti-loosening, when the friction force is too small or the shackle torque is too large, it is not enough to prevent the IBOP between the main shaft and the IBOP. The drill string between the protection joint and the protection joint is loose; in addition, when the protection joint is frequently replaced, the disassembly and assembly are cumbersome. During the breakout process, the bolt drill string is easy to stick. normal drilling work

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