Sucker rod centralizer facilitating decomposing resistance

Abstract

The invention discloses a sucker rod centralizer facilitating decomposing resistance. The sucker rod centralizer comprises a core body. Connectors are arranged at two ends of the core body, and a centralizing body is arranged in the middle of the core body; the outer diameter of the centralizing body is greater than that of a sucker rod; the centralizing body comprises an outer barrel, an inner barrel and two cover plates; a centralizing block is arranged on the surface of the outer barrel, a plurality of grooves are formed in the centralizing block, and the grooves are uniformly distributed along the axis of the centralizing block; a plurality of rollers are further arranged on the centralizing block, the rollers are arranged in the grooves in the longitudinal direction of the centralizing block, and the rollers protrude out of the centralizing block; and the two cover plates are arranged at two ends of the centralizing block respectively. Part of vertical resistance can be decomposed through motion when the sucker rod centralizer is used, so that the suffered resistance is greatly reduced, the abrasion of the centralizer is reduced, the service life of the centralizer is prolonged, and the work efficiency is improved.

Description

technical field [0001] The invention relates to the field of auxiliary tools for oil production, in particular to a sucker rod centralizer which is convenient for decomposing resistance. Background technique [0002] At present, the sucker rod centralizer is widely used in oil well collection. It is a downhole tool to prevent the eccentric wear of the sucker rod. And for directional inclined wells, below the neutral point of the sucker rod, it cooperates with the nylon centralizer on the sucker rod body, and the anti-eccentric wear effect is better. [0003] The sucker rod moves up and down in the oil pipe. Due to the elastic deformation of the sucker rod, the rod and the oil pipe wall are prone to friction, and the sucker rod is easy to break off. Reduce the friction between the rod and the pipe, and enhance the oil production life of the pumping unit. The centralizer is connected to the sucker rod, and the outer diameter of the centralizing sleeve is larger than the oute...

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the defects that the existing sucker rod centralizers cannot eliminate or effectively reduce the vertical resistance to the centralizers, resulting in short service life of the centralizers and easy damage to the sucker rods, the present invention provides a device that facilitates the decomposition of resistance. The sucker rod centralizer can effectively reduce the resistance of the centralizer during oil production, improve the service life of the centralizer, and protect the sucker rod more effectively

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