Stopper for sucker rod centralizer

Abstract

The invention relates to a stopper for a sucker rod centralizer, which comprises an inner semi-sleeve and an outer semi-sleeve fastened with the inner semi-sleeve and is characterized in that: the inner semi-sleeve and the outer semi-sleeve are respectively made from elastic metal materials; a first wedged slot is formed on the left side of the inner semi-sleeve; a wedged slip is arranged in the first wedged slot; a second wedged slot is formed on the right side of the outer semi-sleeve; a wedged slip is arranged in the second wedged slot; one side, in contact with the sucker rod, of the wedged slips is provided with saw teeth. The stopper for the sucker rod centralizer has the advantages that: made from the elastic metal materials, the stopper is free from the influence of oil contamination and can keep steady at high temperature in oil well; due to the wedged slips with the saw teeth, the sucker rod centralizer cannot axially move so that the stopper stops reliably. The stopper is suitable for stopping the sucker rod centralizer of all pumped wells.

Description

technical field [0001] The invention relates to an oil field exploitation appliance, in particular to a stopper for a sucker rod centralizer. Background technique [0002] In the process of oil well pumping, because the sucker rod moves up and down in the oil pipe or rotates and hits the oil pipe, both the oil pipe and the sucker rod are worn, and the well deviation caused by the oil drilling process accelerates the wear, resulting in the wear of the oil pipe , The phenomenon of sucker rod wear and tear occurs from time to time, which seriously affects the normal production of oil wells. In order to avoid this phenomenon, a centralizer is usually installed at the coupling of the sucker rod or other parts of the sucker rod, and stoppers are installed on the sucker rod at one or both ends of the centralizer. The limiter of the oil rod centralizer is made of engineering plastics or metal-rubber, which is prone to movement under the influence of crude oil and high temperature i...

AI Technical Summary

Problems solved by technology

[0002] In the process of oil well pumping, because the sucker rod moves up and down in the oil pipe or rotates and hits the oil pipe, both the oil pipe and the sucker rod are worn, and the well deviation caused by the oil drilling process accelerates the wear, resulting in the wear of the oil pipe , The phenomenon of sucker rod wear and tear occurs from time to time, seriously affecting the normal production of oil wells

In order to avoid this phenomenon, a centralizer is usually installed at the coupling of the sucker rod or other parts of the sucker rod, and stoppers are installed on the sucker rod at one or both ends of the centralizer. The oil rod centralizer limiter is made of engineering plastics or metal-rubber, which is prone to movement under the influence of crude oil and high temperature in the oil well, which affects the effect of centralization. Engineering plastics have poor wear resistance and extremely short service life.

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