A sucker rod anti-eccentric wear centralizer

Abstract

The invention provides a sucker rod anti-eccentric wear centralizer, which includes a centralizing roller, a shaft sleeve, a limit plate, a limit clamp rod, an adjustment spring A, a clamp groove and a ball; the adjustment shaft inside the groove passes through a bearing The centralizing rollers are inlaid, and the adjusting shafts at the two ends of the groove are fitted with bushings. The outer wall of the centralizer body is also welded with sleeves, and an adjusting spring A is arranged between the two sets of sleeves. The centralizing ring There is still a ring-shaped card slot on the outer edge of the arc-shaped centralizing plate. The rear end of the arc-shaped centralizing plate is provided with an integrated adjustment plate, and the adjusting plate is movably stuck in the card-in slot. Three groups of balls are inlaid, and an adjustment spring B is connected in the gap between the arc-shaped centralizing plate and the centralizing ring. The ball at the front end of the arc-shaped centralizing plate facilitates the rotation of the sucker rod. This group of sucker rods is screwed into the internal thread socket of another group of sucker rods. The centralizing roller touches the well wall under the action of the adjustment spring A The up and down adjustment of the sucker rod is smoother.

Description

technical field [0001] The invention belongs to the technical field of oil well work, and more specifically relates to a sucker rod anti-eccentric wear centralizer. Background technique [0002] The sucker rod is a slender rod of the pumping well, it is connected to the polished rod on the top, and the pump is connected to the bottom to transmit power. [0003] The inventor found similar patents in the process of searching for patents. For example, the patent application number is: CN201620952280.0, which discloses a casing centralizer applied to downhole guides in radial drilling, which belongs to the field of petroleum downhole work , including an upper centralizer and a lower centralizer, the upper centralizer includes an upper centralizer body, a centralizing block is arranged on the upper centralizer body, a spring is arranged between the centralizing block and the upper centralizer body, and the lower centralizer includes a lower centralizer body , the lower centraliz...

AI Technical Summary

Problems solved by technology

[0006] In order to solve the above-mentioned technical problems, the present invention provides a sucker rod anti-eccentric wear centralizer to solve the problem that when the sucker rod rotates or moves up and down in the above-mentioned background technology, the centering block will rub against the well wall, resulting in resistance, and the pumping It is more difficult to move the oil rod, increasing the difficulty of use

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