A kind of wax removal shuttle

Abstract

The invention discloses a paraffin removal shuttle and belongs to the field of auxiliary equipment for producing wells. The paraffin removal shuttle comprises a tubular shuttle body, three pairs of symmetrical wrap springs are arranged inside the tubular shuttle body, thrust teeth are arranged in tube wall slots of the tubular shuttle body, each thrust tooth is of a pawl-type structure, the bottom of each thrust tooth is in pin joint with the tubular shuttle body, an elbow of an L-shaped structure is arranged at the tail of each wrap spring, an L-shaped short edge of each elbow points to the inside of the tubular shuttle body, L-shaped portions between every pair of wrap springs are clamped through an overlapped slot plate, the tubular shuttle body is composed of two symmetrical sections, the two sections of the tubular shuttle body are fixedly connected through an annular fixing plate by the aid of screws, and the fixing plate and the tail of each wrap spring are fixedly connected in a pressing and embedding manner. By improvement on the wrap spring fixing mode, the problem of stress concentration at wrap spring fixing positions can be solved, service life of a product is prolonged, and the requirement on service life of paraffin removal equipment in a pumping well can be met.

Description

technical field [0001] The invention relates to the field of supporting equipment for oil production wells. Background technique [0002] Self-spray well mechanical wax removal equipment includes mechanical wax scraping equipment and mechanical wax removal equipment. Mechanical wax scraping mainly includes winches, steel wires, pick-up rods, pulleys, blowout boxes, blowout pipes, steel wire sealers, wax scrapers and plumb weights. It uses a movable wax scraper installed on the sucker rod to remove the wax on the oil pipe and sucker rod. [0003] The automatic wax remover is a kind of supporting equipment for oil production wells developed and designed in recent years to automatically clean the wax deposits on the pipe wall of the pumping well. Its structure includes an upper commutator, a lower commutator and a wax removal shuttle. The upper commutator and the lower commutator are respectively installed at the upper and lower ends of the oil well suction pipe. The wax remo...

AI Technical Summary

Problems solved by technology

[0007] The existing reversing structure realizes the elasticity when reversing by setting leaf springs on both sides, but since the corrosiveness of crude oil itself is invisible, no matter what material the leaf springs are used in, it may Corrosion occurs, and the elasticity of the corroded leaf spring will drop sharply, even causing breakage. The reversing teeth are prone to the problem of being unable to reversing during use, and when encountering the sucker rod joint, it is easy to get stuck. Serious When the well needs to be lifted for maintenance, it will directly affect the normal production of the oil well.

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