A tube type thickening pump

A tube type and pump barrel technology, applied in the field of tube type thick pump, can solve the problem of large downward resistance of the plunger, and achieve the effect of increasing the diameter of the valve ball, reducing the probability of sticking the pump, and reducing the downward resistance.

Active Publication Date: 2020-06-09
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem of the large downward resistance of the plunger in the prior art, the embodiment of the present invention provides a tube type thickening pump

Method used

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  • A tube type thickening pump

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Embodiment Construction

[0026] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0027] Such as figure 1 as shown, figure 1 It is a structural schematic diagram of a tube-type thickening pump provided by an embodiment of the present invention. The tubular thickening pump includes: a pump barrel assembly X and a plunger assembly Y located inside the pump barrel assembly;

[0028] The pump barrel assembly X includes: an upper pump barrel 1 and a lower pump barrel 2 connected to the upper pump barrel 1; the inner diameter of the upper pump barrel 1 is smaller than the inner diameter of the lower pump barrel 2, and the length of the upper pump barrel 1 is shorter than that of the lower pump barrel The length of the barrel 2; the upper pump barrel 1 is used to connect with the oil pipe;

[0029] The plunger assembly ...

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Abstract

The invention discloses a tubular viscous oil pump, and belongs to the field of oil pumps. The tubular viscous oil pump comprises a pump cylinder module assembly, and a plunger module assembly positioned in a pump cylinder module; the pump cylinder module assembly comprises an upper pump cylinder, and a lower pump cylinder connected with the upper pump cylinder; and the plunger module assembly comprises an upper plunger, a liquid draining valve, a liquid feeding and draining short section, a liquid feeding valve and a lower plunger serially connected in sequence. The tubular viscous oil pump is characterized in that the inner diameter of the upper pump cylinder is smaller than the inner diameter of the lower pump cylinder; the length of the upper pump cylinder is smaller than the length ofthe lower pump cylinder; the outer diameter of the upper plunger is smaller than the outer diameter of the lower plunger; the length of the upper plunger is smaller than the length of the lower plunger; and through vacuum negative-pressure feedback force formed by the pump cavity, the pressure to the plungers by rod posts is burdened, the descending resistance is reduced, and the bending and theeccentric wear of the rod posts are prevented.

Description

technical field [0001] The invention relates to the field of oil well pumps, in particular to a tube type thick pump. Background technique [0002] With the development of oil field extraction technology, various types of oil well pumps have emerged to meet the needs of different oil extraction and lifting processes. For example, conventionally used pumps can be divided into tube well pumps and rod well pumps, and special pumps can be divided into thick pumps, anti-air pumps, sand control pumps, etc. according to their uses. Among them, the tubular pump can be used to adapt to the exploitation of heavy oil. How to design the tubular pump to effectively extract heavy oil has become a problem that people pay attention to in the field of oil field production research. [0003] The prior art tubular thickening pump consists of a pump barrel, a plunger, a liquid inlet fixed valve, a liquid discharge floating valve and a rod column. The upper part of the pump barrel is connected...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04B15/02F04B47/00F04B53/10E21B43/00
CPCE21B43/00F04B15/02F04B47/00F04B53/1077
Inventor 刘树高韩启清李少甫王瑀郑小雄陈文徽王新红李海燕
Owner PETROCHINA CO LTD
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