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Horizontal well self-centering moving piston type cone valve pump

A self-centering, horizontal well technology, applied to variable displacement pump components, pumps, pump components, etc., to achieve the effect of solving the problem of eccentric wear

Active Publication Date: 2019-01-08
QINGDAO TECHNOLOGICAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to effectively solve the technical problems of oil and gas extraction and unconventional gas drainage horizontal well pumping and overcome the defects and deficiencies of the existing horizontal well oil pump device, the purpose of the present invention is to provide a water pump for oil and gas extraction and unconventional gas drainage. Hira well dedicated self-centering piston type cone valve pump

Method used

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  • Horizontal well self-centering moving piston type cone valve pump
  • Horizontal well self-centering moving piston type cone valve pump
  • Horizontal well self-centering moving piston type cone valve pump

Examples

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Embodiment Construction

[0041] exist figure 1 Among them, the horizontal well self-centering moving plug cone valve pump is mainly composed of pump barrel 1, sand-scraping plunger 2, floating cone valve 3, stirring centering device 4 and fixed cone valve 5, which can realize liquid production Timely discharge of sand particles, self-centering of the sand-scraping plunger 2 and the floating cone valve 3, and smooth opening and closing of the floating cone valve 3 and the fixed cone valve 5, to solve the sand wear between the pump cylinder 1 and the sand-scraping plunger 2 and eccentric wear, horizontal well valve leakage, and difficulty in opening and closing of the valve ball. The upper part of the movable plug type cone valve pump is fixed to the bottom end of the tubing string through the pump barrel collar of the pump barrel 1, and the lower part is connected with the gas anchor and tailpipe by the gas anchor collar fixing the cone valve 5, and scraping at the same time The sand type plunger 2 is...

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Abstract

The invention provides a horizontal well self-centering moving piston type cone valve pump. The horizontal well self-centering moving piston type cone valve pump is used in horizontal well and inclined well pumping conditions. The horizontal well self-centering moving piston type cone valve pump is composed of a pump cylinder body, a sand scraping type plunger piston, a stirring centralizer, a walking cone valve and a fixed cone valve. The problems of sand abrasion and eccentric wear between a long pump cylinder and a moving plunger piston, horizontal well valve leakage as well as valve ball difficult opening and loose closing can be effectively solved. The sand scraping type plunger piston adopts a moving piston type spiral sand scraping plunger piston and combine with a compensation ringto prevent sand falling into an annular gap between the long pump cylinder and the moving plunger piston, a spiral sand scraping column timely scraping and discharging out of sand adsorbed to the cylinder wall of the long pump cylinder, and the stirring centralizer adopts a double centralizing spiral tooth stirring rod body to realize self-centering of the sand scraping type plunger piston and the walking cone valve. The walking cone valve adopts a structure of a fixed cone valve and a moving cone valve seat and automatically opens and closes with the reciprocating movement of the stirring centralizer, the fixed cone valve adopts a structure of a moving cone valve and a fixed cone valve seat, and a fixed cone valve body is opened and closed smoothly through assisting of double springs anda guide rod.

Description

technical field [0001] The invention relates to an oil well pump for oil and gas exploitation and unconventional gas drainage and recovery for horizontal wells and inclined wells, in particular to a self-centering dynamic plug adopting a dynamic plug type spiral sand-scraping plunger and a double centralizing spiral tooth stirring rod body cone valve pump. Background technique [0002] The development method of horizontal wells provides an effective way for oil and gas production and unconventional gas drainage to improve single well productivity and prolong the stable production time. After oil and gas production and unconventional gas drainage enter the stable production stage, The submergence degree of the oil pump is usually low. At this time, the oil well pump is usually lowered to the inclined well section of the horizontal well. Therefore, when the conventional oil well pump is used in the horizontal well, there will be sand wear and partial wear between the plunger a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B47/00F04B53/00F04B53/10F04B53/14F04B53/16F04B53/22
Inventor 刘新福吴建军王优强周超于邦廷陈晓宁
Owner QINGDAO TECHNOLOGICAL UNIVERSITY
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