Anti-sulphuric wear-resistant sucker rod centralizer special for wax removal

Abstract

The invention discloses an anti-sulphuric wear-resistant sucker rod centralizer special for wax removal. The anti-sulphuric wear-resistant sucker rod centralizer special for wax removal comprises a metal rod body and a cylindrical synthetic centralizing body rotatably arranged on the metal rod body, wherein three inner diversion screw-type overflowing holes are evenly formed in an inner wall of the cylindrical synthetic centralizing body, and a plurality of cylindrical flat bosses are evenly arranged on an outer surface of the cylindrical synthetic centralizing body. The anti-sulphuric wear-resistant sucker rod centralizer special for wax removal has the advantages that a cylindrical overall structure is adopted for the synthetic centralizing body, and the cylindrical body is provided withthe small bosses which are evenly distributed so that wax stone on an inner wall of an oil pipe can be conveniently cleared when a sucker rod moves vertically. The three evenly-distributed inner diversion screw-type overflowing holes in the inner wall of the synthetic centralizing body are designed, when overflowing crude oil passes through the inner diversion screw-type overflowing holes, screwstructures generate rotating force, the centralizing body is pushed to rotate on the metal rod body, wax on the inner wall is removed without dead angles, and not only can an effect of reducing upperand lower resistance of the sucker rod be achieved, but also even wear of the centralizing body can be guaranteed.

Description

technical field [0001] The invention relates to oil field exploitation equipment, in particular to a sucker rod centralizer special for sulfur resistance, wear resistance and wax removal. Background technique [0002] Oil production wells with rods account for more than 80% of the production wells in oilfields, and are still the main oil production method in oilfields. With the deepening of oilfield development, inclined wells, directional wells, and deep wells are gradually increasing. In addition, the water content of old wells is increasing year by year. Eccentric wear, corrosion, and breakage are becoming more and more serious. The sucker rod centralizer is the most important tool to control the eccentric wear of the oil rod because of its simple process and convenient operation. Conventional sucker rod centralizers include metal sucker rod centralizers and Nylon sucker rod centralizer, the former is easy to wear the inner wall of the oil pipe due to its hard material, a...

AI Technical Summary

Problems solved by technology

[0002] Oil production wells with rods account for more than 80% of the production wells in oilfields, and are still the main oil production method in oilfields. With the deepening of oilfield development, inclined wells, directional wells, and deep wells are gradually increasing. In addition, the water content of old wells is increasing year by year. Eccentric wear, corrosion, and breakage are becoming more and more serious. The sucker rod centralizer is the most important tool to control the eccentric wear of the oil rod because of its simple process and convenient operation. Conventional sucker rod centralizers include metal sucker rod centralizers and Nylon sucker rod centralizer, the former is easy to wear the inner wall of the oil pipe due to its hard material, and the metal shavings produced are easy to get stuck in the pump, causing secondary operations; containing H 2 S and tubing wax deposition well conditions, the centralizer has low wear resistance, easy to wear, easy to corrode, easy to deform, and the centralizer often fails and breaks off, so the application is limited

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