Elastic oil sucker rod centralizer for oil fields

Abstract

The invention relates to the technical field of oil extraction equipment, and discloses an elastic oil sucker rod centralizer for oil fields. The elastic oil sucker rod centralizer for oil fields comprises a centralizer body. The top end of the centralizer body is fixedly connected with one end of a fixing screw rod. The top portion of one side of the centralizer body is fixedly connected with onesides of regulating sleeves, one sides of inner cavities of the regulating sleeves are fixedly connected with one ends of adjusting springs, and the other ends of the adjusting springs are fixedly connected with one sides, arranged in the inner cavities of the regulating sleeves, of adjusting plates. The other sides of the adjusting plates are fixedly connected with one ends of regulating link rods. According to the elastic oil sucker rod centralizer for oil fields, by arranging ball type clamp blocks and balls, the sliding friction between the balls and the inner wall of an oil tube can be effectively reduced, and the service life of idler wheels is prolonged. Meanwhile, the ball type clamp blocks are in threaded connection with the regulating link rods, the problem that an existing one-piece structure cannot replace the wornout idler wheels is avoided, and the maintenance cost of the elastic oil sucker rod centralizer for oil fields is reduced.

Description

technical field [0001] The invention relates to the technical field of oil production equipment, in particular to an elastic sucker rod centralizer for oil fields. Background technique [0002] The sucker rod centralizer is a tool to prevent the inner wall of the oil pipe from being worn out during the up and down movement of the sucker rod in the oil pipe. Well, it can be divided into roller type, column type and clamp type according to the shape, and the roller type sucker rod centralizer has the characteristics of large flow area with the oil pipe, more centralization points, long service life and less wear on the oil pipe. , is more and more used in the oil well pumping process. [0003] In the existing roller-type sucker rod centralizer, when both sides of the roller contact with the inside of the oil pipe at the same time, the roller cannot roll in the oil pipe at all, which increases the wear of the roller and the inner wall of the oil pipe and reduces the At the sa...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides an elastic sucker rod centralizer for oil fields, which has the advantages of flexible roller rotation, easy replacement of rollers, slowed down the vibration of the sucker rod, and automatic cleaning of the scaling on the inner wall of the oil pipe, etc., to solve the problem of In the existing roller-type sucker rod centralizer, when both sides of the roller contact with the inside of the oil pipe at the same time, the roller cannot roll in the oil pipe at all, which increases the wear of the roller and the inner wall of the oil pipe, and reduces the The service life of the oil rod centralizer, at the same time, the existing roller centralizer adopts an integrated structure, which cannot be replaced separately when the roller is damaged, which increases the maintenance cost, and the inner wall of the oil pipe will appear during the oil well operation. The phenomenon of carbonate crystallization and organic matter precipitation with the decrease of temperature, and carbonate crystallization and organic matter eluate will adhere to the inner wall of the tubing and the outer wall of the sucker rod to form scaling, which reduces the service life of the tubing

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