Self-cleaning anti-settling small displacement oil well pump

A small-displacement, well-well pump technology, applied in variable capacity pump components, pumps, pump components, etc., can solve problems such as eccentric wear, sand settling guidance, etc., to reduce sand settling, valve cover breakage, and resistance small effect

Active Publication Date: 2017-10-20
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-cleaning anti-settling small displacement oil well pump
  • Self-cleaning anti-settling small displacement oil well pump
  • Self-cleaning anti-settling small displacement oil well 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 present invention relates to a self-washing anti-settling small-displacement oil well pump. The self-washing anti-settling small-displacement oil well pump includes a guide spoiler assembly, a plunger assembly, a pump barrel assembly, a guide spoiler The flow pipe assembly is mainly composed of the pump barrel coupling, the centering guide rail and the guide tube; the plunger assembly includes the plunger open valve cover, the plunger closed valve cover, the ball of the floating valve, the seat of the floating valve, Composed of guiding centralizer and hollow plunger; the plunger open valve cover is set in the centralizing guide rail, the lower part of the plunger open valve cover is connected to the plunger closed valve cover, and there are floating valve balls and valves inside the plunger closed valve cover. The seat of the traveling valve, the valve ball of the traveling valve and the seat of the traveling valve are all fixed by a guide centralizer, and the hollow plunger is connected under the guide centralizer, and the guide centralizer is located in the centralizing guide rail and is closely matched with the centralizing guide rail; the thick-walled pump The inner diameter of the barrel is slightly smaller than the inner diameter of the extended pump barrel. The present invention has a built-in disturbance function in the oil well pump to reduce sand settling, maintain the self-cleaning function, and avoid eccentric wear of the plunger in addition.

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 Patents(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张玉会陈宏艳宋微曾宪来王素玲周瑞芬
Owner NORTHEAST GASOLINEEUM UNIV
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