Highly pressurized liquid driven eccentric sheave type bottom hole sleeve cutter

Abstract

A highly pressurized liquid driven eccentric sheave type bottom hole sleeve cutter comprising an upper cylinder, spiral blades, a spiral blade mount shaft, a spiral blade limit seat, a plurality of balls, a lower cylinder sleeve, an automatic rebound mechanism upper pedestal, an upper limit seat, a lower limit seat, an upper cylinder outer sleeve, an upper cylinder inner sleeve, a lower cylinder outer slide column, an automatic rebound lower pedestal, a connecting pole, a spring centralizing barrel, a normally loose spring, a spring upper pedestal, a spring lower pedestal, a pin shaft, a crank connecting rod, a cutting tooth slideway, a cutting tooth pedestal, cutting teeth, and a detachable eccentric sheave 22; the highly pressurized liquid driven eccentric sheave type bottom hole sleeve cutter is simple in structure, low in cost, high in usage efficiency, easy to operate, saves materials, and is hard to be fatigued and damaged.

Description

technical field [0001] The invention relates to a casing cutter, in particular to a high-pressure liquid driven eccentric wheel type bottom hole casing cutter. Background technique [0002] At present, the existing casing cutter adopts the drill pipe to transmit the torque, the structure is complex and cumbersome, and more energy will be wasted during use, which is not conducive to environmental protection (such as CN 203796205U;); due to the cumbersome structure, the energy transmission process is complicated, When cutting deep well casing, the drill pipe is prone to serpentine bending and insufficient torque; in addition, the existing casing cutter contains multiple sets of spring wearing parts, and the spring is prone to lose elasticity under fatigue load. It is not conducive to repeated use; in addition, some casing cutters (such as 201020139208.1) have a cumbersome structure and increase useless work during use, resulting in energy waste and low efficiency, and they are...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problems that the existing casing cutter has complex and cumbersome structure, low use efficiency, is not conducive to environmental protection and energy saving, and is prone to fatigue damage, and provides a low cost, high use efficiency, and material saving A high-pressure liquid-driven eccentric wheel bottomhole casing cutter that is not prone to fatigue, simple in structure, and easy to operate

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