Pumping well anti-eccentric device based on ball face abrasion-proof body

Abstract

The invention relates to a pumping well anti-eccentric device based on a ball face abrasion-proof body. During a site using process of a sucker rod anti-eccentric device, anti-eccentric effect is not obvious, and accordingly a sucker rod and an oil pipe are damaged and fall off. The pumping well anti-eccentric device is provided with a center rod. The cylindrical abrasion-proof body is arranged on the center rod in a sleeved mode. A plurality of sphere grooves are evenly formed in the outer wall of the abrasion-proof body. Sphere balls are embedded into the sphere grooves. Small part ball crowns of the balls are placed out of the sphere grooves. Upper limiting rings and lower limiting rings which are fixed on the center rod are arranged on the center rod and on the upper side and the lower side of the abrasion-proof body. Gaps exist between the upper limiting rings, the lower limiting rings and the abrasion-proof body. The pumping well anti-eccentric device based on a ball face abrasion-proof body is long in wear-resistant time, direct contact of the sucker rod and the oil pipe is avoided, so that abrasion is avoided, the service life of the sucker rod and the oil pipe is prolonged, and oil well normal production is kept.

Description

technical field [0001] The invention relates to a device for preventing eccentric wear of sucker rods and oil pipes in oil exploitation operations, in particular to a device for preventing eccentric wear of oil pumping wells based on ball surface anti-wear bodies. Background technique [0002] As oilfield development enters the middle and late stages, the phenomenon of eccentric wear of sucker rods and tubing will intensify, seriously affecting oilfield production. Although there are many types of anti-eccentric wear devices for sucker rods, the effect of anti-eccentric wear is not obvious during field use, and there is still a problem of local severe wear, which causes damage and breakage of sucker rods and oil pipes, directly Affect the normal production of the pumping well, resulting in an increase in the maintenance cost of the oil well operation. Contents of the invention [0003] The object of the present invention is to provide an anti-eccentric wear device for p...

AI Technical Summary

Problems solved by technology

Although there are many types of anti-eccentric wear devices for sucker rods, the effect of anti-eccentric wear is not obvious during field use, and there is still a problem of local severe wear, which causes damage and breakage of sucker rods and oil pipes, directly Affect the normal production of the pumping well, resulting in an increase in the maintenance cost of the oil well operation

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