Introduction To The Characteristics And Structural Principle Of The Sucker Rod Centralizer

The sucker rod centralizer consists of a coupling, a righting sleeve and a short section. Connected to the sucker rod, the outer diameter of the righting sleeve is greater than the outer diameter of the sucker rod coupling; the righting sleeve is a high-strength wear-resistant material, which is in contact with the oil pipe to wear the positive body and reduce the wear of the oil pipe, Achieve anti-biasing purposes.

Sucker rod centralizer is a slanting downhole tool for anti-pumping wells. It is suitable for eccentric pumping wells. It is especially suitable for pumping wells and directional inclined wells with eccentric grinding above and below the sucker rod. Sucker rod neutral point In the following, in combination with the nylon centralizer on the sucker rod body, the anti-biasing effect is better. 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 easily broken off. The sucker rod centralizer has flexibility and is in contact with the inner wall of the oil pipe. Reduce the friction between the rod and the tube and enhance the oil recovery life of the pumping unit.

The sucker rod moves up and down in the oil pipe. Due to the elastic deformation of the sucker rod, the rod and the tubing wall are prone to friction, and the sucker rod is easily broken off. The sucker rod centralizer has flexibility and is in contact with the inner wall of the tubing. It can reduce the friction between the rod and the tube and enhance the oil recovery life of the pumping unit.

The working principle of the sucker rod centralizer is:

The sucker rod centralizer is connected to the sucker rod, and the outer diameter of the righting sleeve is greater than the outer diameter of the sucker rod coupling, and the righting effect is used; the righting sleeve is high-strength wear-resistant, high temperature resistant to 260°C, self-lubricating poly four Fluoroethylene material, which is in contact with the oil pipe to wear the positive body, thereby reducing the wear of the oil pipe to achieve the purpose of anti-biasing. The outer surface of the steel adopts nickel-phosphorus plated surface anti-corrosion technology, which makes the centralizer have wear-resisting and corrosion-resistant properties, and can be well adapted to the well-corrugated well conditions.

The sucker rod centralizer has the following features:

(1) It adopts nylon 66 material, which has been specially processed to form a righting sleeve. It has the characteristics of small friction coefficient, no slag after wear, long service life and low relative cost.

(2) Adopt a unique inner elliptical structure. The centralizer is a two-half type, the righting block A and the righting block B hold the sucker rod to lock the buckle, and the sucker rod forces the centralizer to control the deformation. The strong deformation force produced by the centralizer sucks the rod so that it does not slide axially.

(3) Good self-wear resistance and low friction coefficient. The area of the righting area is increased to increase the wear resistance. If the centralizer has high self-abrasion resistance, the centralizer can maintain a good positive effect for a long time, and the eccentric wear damage is also reduced to a small extent.

(4) The centralizer has less damage to the oil pipe. After the engineering plastic nylon 66 centralizer is used, the frictional pair of the rod tube changes from a metal-metal pair to a metal-engineering plastic pair. Although the wear resistance of the engineering plastic is not as good as that of the oil pipe, it effectively protects the oil pipe from serious wear.

(5) The centralizer has excellent mechanical properties.

The sucker rod centralizer also has the characteristics of convenient installation, disassembly, high strength, high toughness, low creep, low water absorption, anti-corrosion, oil resistance and wear resistance. Compared with the plug-in centralizer, it is less prone to falling off, jamming, etc. It is an ideal tool for the production of major oil fields.

Sucker rod centralizer is a slanting downhole tool for anti-pumping wells. It is suitable for eccentric pumping wells. It is especially suitable for pumping wells and directional inclined wells with eccentric grinding above and below the sucker rod. Sucker rod neutral point In the following, in combination with the nylon centralizer on the sucker rod body, the anti-biasing effect is better.