Aligning anti-release and anti-bias wearing apparatus used for pumping rod

A sucker rod, anti-eccentric wear technology, applied in drill pipes, drilling equipment, earthwork drilling, etc., can solve the problems of affecting the production cycle of oil wells, short service life of sucker rods, increased maintenance costs, etc., to reduce the number of donkey heads Load, reduce wear resistance, reduce the effect of fatigue strength

Inactive Publication Date: 2009-07-08
北京敦华石油技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the undercut is serious, the sucker rod breaks off, resulting in a short service life of the sucker rod. At this time, it must be s...

Method used

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  • Aligning anti-release and anti-bias wearing apparatus used for pumping rod
  • Aligning anti-release and anti-bias wearing apparatus used for pumping rod
  • Aligning anti-release and anti-bias wearing apparatus used for pumping rod

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Embodiment Construction

[0030] The technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0031] see figure 1 , the present invention is an anti-slip and anti-eccentric wear device for straightening the sucker rod, which includes an anti-slip straightening device arranged at the end of the sucker rod 23 and a centralizer arranged at the middle of the sucker rod 23 .

[0032] join figure 2 , the upper part of the housing 2 of the anti-off and straightening device in the present invention is provided with a steering shaft 1, and the steering shaft 1 is fixed in the housing 2 through the joint inner retaining ring 9, the joint outer retaining ring 10 and the joint lock nut 11; The end of the steering shaft 1 fixed in the housing 2 is a sphere, which can rotate 360 ​​degrees in the radial direction. The swing angle of the steering shaft 1 is 3° to 5°. Through the rotation and swing of the steeri...

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Abstract

The invention relates to a release and lopsided wear resisting device for adjusting an oil pumping rod straightly, which belongs to the technical field of oil pumping well special equipment. In order to solve the problems of breaking and releasing, back-off and lopsided wear of the oil pumping rod in the prior art, the invention provides the release and lopsided wear resistance device for adjusting the oil pumping rod straightly, which comprises a centralizer arranged at the middle part of the pumping rod and a release resistance straightening device arranged at the upper part of the pumping rod. The upper part inside a shell of the release resistance straightening device is provided with a steering shaft, while the lower part is provided with a release resistance shaft; a bearing middle sleeve and a bearing pothead are sequentially arranged between the release resistance shaft and the shell from top to bottom, and a roller is embedded between the release resistance shaft and the bearing middle sleeve. The release and lopsided wear resistance device has the advantages that breaking and releasing of the oil pumping rod caused by the back-off of the oil pumping rod is prevented, the dithering peak value of the oil pumping rod is absorbed, the shock load formed by the dithering peak value is reduced, the fatigue strength of the oil pumping rod is reduced, the straightness of the oil pumping rod is adjusted, the pumping rod is centralized, the friction resistance is reduced, the horsehead load is reduced, the pump depth is deepened, and the daily oil well fluid output is improved.

Description

technical field [0001] The invention relates to the technical field of special equipment for oil pumping wells, in particular to an anti-slip and anti-eccentric wear device for straightening a sucker rod. Background technique [0002] When the pumping unit drives the sucker rod to reciprocate up and down, because the oil well is not vertical or the horizontal well is inclined in the horizontal and vertical directions, in the non-vertical section and the deflection section, the sucker rod and the tubing are prone to grinding, jamming, and collision. , Hanging and other problems increase the up and down impact load of the donkey head. When the stress of the sucker rod alternates seriously, the elastic deformation caused by the peak vibration of the sucker rod is the largest. When the elastic deformation and expansion of the rod, the sucker rod produces positive or Anti-rotation releases deformation energy to form sucker rod undercut. When the undercut is severe, the sucker ro...

Claims

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Application Information

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IPC IPC(8): E21B17/10
Inventor 栾海军江丽卢学会陈容李强杜宝华
Owner 北京敦华石油技术有限公司
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