Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Righting structure for preventing sucker rod pump plunger from eccentrically-wearing

An oil well pump and plunger technology is applied in the field of righting structures for preventing eccentric wear of the plunger of a rod oil well pump.

Inactive Publication Date: 2017-08-01
SOUTHWEST PETROLEUM UNIV +1
View PDF6 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention aims to provide a centering structure for preventing the eccentric wear of the plunger of the rod pump, which can solve the problem of the eccentric contact between the plunger and the inner wall of the pump barrel caused by the bending of the sucker rod in the existing rod pump pumping system

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Righting structure for preventing sucker rod pump plunger from eccentrically-wearing
  • Righting structure for preventing sucker rod pump plunger from eccentrically-wearing
  • Righting structure for preventing sucker rod pump plunger from eccentrically-wearing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0026] Such as figure 1 , 3 As shown, the centralizing structure for preventing the eccentric wear of the plunger of the rod well pump disclosed by the present invention includes a centralizing device 1, an equal-diameter sucker rod 2, a pump barrel 3 and a plunger 4, and the centralizing device 1 and the plunger 4 are coaxially arranged In the pump cylinder 3, the centralizing device 1 is located at the outer end of the plunger 4. The outer wall of the centralizing device 1 is threadedly matched with the inner wall of the pump cylinder 3. The center of the centralizing device 1 has an oil rod guide hole 11 arranged axially. The inner diameter of the oil rod guide hole 11 is Adapted to the outer diameter of the equal-diameter sucker rod 2, one end of the equal-di...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a righting structure for preventing a sucker rod pump plunger from eccentrically-wearing. The righting structure for preventing the sucker rod pump plunger from eccentrically-wearing comprises a righting device, an equal-diameter sucker rod, a pump cylinder, and the plunger. The righting device and the plunger are coaxially arranged in the pump cylinder, the righting device is located at the outer end of the plunger, and an outer wall of the righting device is in threaded fit with an inner wall of the pump cylinder; and a sucker rod guiding hole is formed in the center of the righting device in the axial direction, one end of the equal-diameter sucker rod penetrates through the sucker rod guiding hole and is connected with the plunger, and an oil-through hole is formed in the righting device. According to the righting structure for preventing the sucker rod pump plunger from eccentrically-wearing, the righting device is installed on the inner wall of the upper end of the pump cylinder, and loading of the plunger and the sucker rod is not increased; and the plunger connected with the equal-diameter sucker rod is always located at the center of the pump cylinder through a limiting effect of the righting device on the equal-diameter sucker rod, and the problem of eccentric wear of the plunger is solved.

Description

technical field [0001] The invention relates to the technical field of oil extraction equipment, in particular to a centralizing structure for preventing eccentric wear of a rod-well pump plunger. Background technique [0002] With the continuous development of oil exploration and development, rod pump oil production system is widely used in oil field development. In a vertical well, when the sucker rod drives the plunger to reciprocate up and down, a helical bending deformation occurs under the action of pressure or tension, which causes the outer surface of the plunger connected at the lower end to be easily contacted and rubbed against the inner wall of the pump barrel, resulting in eccentric wear of the plunger and the pump Leakage seriously affects the pumping efficiency of the oil pumping system. In a deviated well, since the well depth track is at a certain angle to the vertical direction, the plunger's lower surface is always in contact with the inner surface of the...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): E21B17/10F04B53/14
CPCE21B17/1071F04B53/14
Inventor 刘永辉马赞王雷张建军彭振华张园
Owner SOUTHWEST PETROLEUM UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products