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Asymmetric groove type sand storage wear-resistant oil well pump plunger

A groove-type, asymmetrical technology, applied in the direction of pump components, variable displacement pump components, components of pumping devices for elastic fluids, etc., can solve problems such as easy wear and tear, and achieve increased work cycle and single well oil production The effect of continuous cost reduction, improvement of oil storage capacity and sand storage capacity

Pending Publication Date: 2019-04-12
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome and solve the problem that the plunger of the oil pump in the prior art is easy to wear due to the friction of sand particles. The asymmetric groove type sand storage wear-resistant oil pump plunger provided by the present invention is The surface of the plunger body is provided with an asymmetric groove structure, which reduces the friction area between the plunger-pump barrel pair, reduces the movement resistance of the plunger, improves the sand-carrying capacity in the annular gap, and improves the column Abrasion resistance of the plug

Method used

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  • Asymmetric groove type sand storage wear-resistant oil well pump plunger
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  • Asymmetric groove type sand storage wear-resistant oil well pump plunger

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Embodiment Construction

[0020] Such as Figure 1 to Figure 4 As shown, the asymmetric grooved sand storage wear-resistant oil pump plunger provided by the present invention, the asymmetric groove sand storage wear-resistant oil well pump plunger is provided with an annular groove coaxial with the plunger body 1 surface 2, and arranged at equal intervals along the axial direction of the plunger body 1, the width of the annular groove 2 along the axial direction of the plunger body 1 is L 1 , the interval width between two adjacent annular grooves 2 is set as L 2 , and L 1 :L 2 =1: (1.5~3); the angle between the upper wall surface 4 of the annular groove 2 and the plunger body 1 is α, and the axial inclination angle between the lower wall surface 5 of the annular groove 2 and the plunger body 1 The included angle is β, where α>β.

[0021] The surfaces of the plunger body 1 and the annular groove 2 are coated with a wear-resistant coating 3 to form a distribution structure with wear-resistant charac...

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Abstract

The invention discloses an asymmetric groove type sand storage wear-resistant oil well pump plunger, belongs to the field of oil field oil production equipment. Annular grooves coaxial with a plungerbody are formed in the surface of the plunger body, and the annular grooves are arranged at equal intervals along the axial direction of the plunger body; and an axial inclination included angle between the upper wall surface of each annular groove and the plunger body is alpha, the axial inclination included angle between the lower wall surface of each annular groove and the plunger body is beta,wherein the alpha is larger than the beta. According to the plunger, the outer surface of the plunger body is arranged to be of an asymmetric groove structure, so that the oil storage capacity and the sand storage capacity of a plunger-pump cylinder ring space is improved, the resistance to reciprocating motion of the plunger in a pump cylinder is reduced, the working period of a plunger-pump cylinder is prolonged, the single well productivity is increased, and the single-well oil production cost is continuously reduced.

Description

technical field [0001] The invention relates to the field of oil production equipment in an oil field, in particular to a plunger of an asymmetric groove sand storage wear-resistant oil well pump. Background technique [0002] At present, downhole sand control pumps in oil fields have been widely used in oil production operations in various oil fields. Sand control pumps have appeared in various styles, such as long plunger sand control pumps, moving barrel sand control pumps, etc. Because the sand control device and structure of the oil well pump are relatively simple , in the process of oil production, impurities such as formation sand, fracturing sand and oil sludge often enter the oil well pump, and such impurities will cause a series of follow-up problems after entering the oil well pump: [0003] (1) The friction between the pump barrel and the plunger pair of the oil well pump increases, which aggravates the wear of the plunger and shortens the service life of the plu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B53/14
CPCF04B53/14
Inventor 谢晓波张凯许晓慧高润峰邓馨卉高科张洪宾
Owner JILIN UNIV
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