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Self-washing type sand setting prevention small-displacement oil pump

A small displacement, oil pumping technology, applied in the direction of variable capacity pump components, pumps, pump components, etc., can solve the problems of sand guidance, eccentric wear, etc., to reduce valve cover breakage, sand and resistance. small effect

Active Publication Date: 2016-06-29
NORTHEAST GASOLINEEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a self-washing anti-sanding small-displacement oil well pump, which is used to solve the problem of sand-settling of the external small-displacement pump with a floating valve in the prior art. and the problem of guide eccentric wear

Method used

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  • Self-washing type sand setting prevention small-displacement oil pump
  • Self-washing type sand setting prevention small-displacement oil pump
  • Self-washing type sand setting prevention small-displacement oil pump

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Embodiment Construction

[0021] Below in conjunction with accompanying drawing, the present invention will be further described:

[0022] Such as figure 1 As shown, this self-washing anti-settling small displacement oil well pump includes guide spoiler assembly, plunger assembly, pump barrel assembly, refer to figure 2 , the guide spoiler assembly is mainly composed of the pump barrel collar 1, the righting guide rail 2 and the guide tube 3. Both the righting guide rail 2 and the guide tube 3 are threadedly connected with the pump barrel collar 1 at their respective upper ports, and both the righting guide rail 2 and the guide tube 3 are threadedly connected with the pump barrel assembly at their respective lower ports, and the pump barrel assembly There is a fixed valve in the lower part.

[0023] refer to image 3 , the plunger assembly consists of a plunger open valve cover 4, a plunger closed valve cover 5, a floating valve ball 6, a floating valve seat 7, a guide centralizer 8 and a hollow pl...

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Abstract

The invention relates to a self-washing type sand setting prevention small-displacement oil pump. The self-washing type sand setting prevention small-displacement oil pump comprises a guide turbulent tube assembly, a plunger assembly and a pump barrel assembly. The guide turbulent tube assembly is mainly composed of a pump barrel coupling, a centering guide rail and a guide barrel. The plunger assembly comprises a plunger open valve cover, a plunger closed valve cover, a traveling valve ball, a traveling valve seat, a guide centering device and a hollow plunger assembly, wherein the plunger open valve cover is arranged in the centering guide rail; the lower portion of the plunger open valve cover is connected with the plunger closed valve cover; the traveling valve ball and the traveling valve seat are arranged inside the plunger closed valve cover and fixed with the guide centering device; the lower portion of the guide centering device is connected with a hollow plunger; and the guide centering device is located in the centering guide rail and in close fit with the centering guide rail. The internal diameter of the thick-wall pump barrel is slightly smaller than that of a lengthened pump barrel. The disturbance function is realized in the oil pump so that set sand can be reduced and the self-washing function can be kept; and besides, eccentric wear to the plunger is avoided.

Description

technical field [0001] The invention relates to the technical field of mechanical oil extraction equipment in the petroleum industry, in particular to a self-washing anti-settling small displacement oil well pump. Background technique [0002] Low-yield and low-permeability oil fields are widely distributed in my country. According to statistics, the number of low-yield oil wells in China currently exceeds 100,000. The efficient development of low-yield and low-permeability oil fields has become one of the main directions of domestic oil fields. However, due to poor physical properties, low production, low water content, high viscosity, and uncoordinated supply-production relationship in this part of the reservoir, the efficiency of most oil well systems is below 15%. However, the minimum diameter of the API oil well pump is Φ32mm. Although oil well pumps of Φ28mm are produced in small batches in China, due to the limitations of the pump structure, processing technology and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B47/00F04B53/16F04B53/10F04B53/12F04B53/14
CPCF04B47/00F04B53/1002F04B53/126F04B53/14F04B53/146F04B53/16
Inventor 姜民政冯子明董康兴曾宪来王素玲周瑞芬
Owner NORTHEAST GASOLINEEUM UNIV
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