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

Screw pump cam type centering turnover plate anchor

A technology of cam type and flap anchor, which is applied in the direction of drill pipe, drilling equipment, wellbore/well parts, etc., can solve the problems of tubing bending, vibration intensification, and radial eccentric wear of tubing, so as to prevent spring performance and eliminate Vibration, avoiding the effect of severe bending

Pending Publication Date: 2018-02-02
吴晰
View PDF0 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The support slip type tubing anchor is anchored through the pressure tubing, which may easily cause severe bending of the tubing, resulting in serious radial wear of the tubing and increased vibration; the reliability of the flap type tubing anchor is low; the setting and unsealing process of the hydraulic tubing anchor is complicated ;Insufficient torsion resistance of the torque anchor
The problems existing in the above methods make the current downhole screw pump anchors unable to meet the requirements of complex downhole working conditions, which restricts the application and development of screw pump oil recovery technology

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
  • Screw pump cam type centering turnover plate anchor
  • Screw pump cam type centering turnover plate anchor
  • Screw pump cam type centering turnover plate anchor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0012] Attached below Figure 1-5 The present invention is described in further detail:

[0013] The specific structure is as follows: the upper joint 1 is threaded to the upper central tube 12; the upper part of the upper central tube 12 is provided with four sliding cam surfaces 7 uniformly distributed along the circumferential direction; the main body 2 is set on the lower end of the upper joint 1, and the spring seat 10 is set on the upper central tube 12 and is connected with the thread J of the main body 2, the upper center pipe 12 is threadedly connected with the lower center pipe 13, and a large spring 18 is assembled between the spring seat 10 and the positioning piece 19 on the lower center pipe 13; There are four strip-shaped holes 15, and slips 4 are arranged in the holes, and the arc-shaped lower end surface of slips 4 is in contact with the sliding cam surface 7. Several spring holes 16 are arranged on the main body, and the spring 3 is pressed onto the spring b...

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 provides a screw pump cam type centering turnover plate anchor. A movable cam face is arranged on the upper portion of an upper center pipe, a centering device main body is installed atthe lower end of an upper joint in a sleeving mode, a plurality of strip-shaped holes are formed in the upper portion of the centering device main body, slips are arranged in the holes, the circular-arc-shaped lower end faces of the slips are in contact with the sliding cam face, the two ends of each slip are connected with spring bases correspondingly, a plurality of spring holes are formed in the centering device main body, and spacers are welded to the positions, at the upper ends of springs, of the centering device main body; and a plurality of strip-shaped grooves are evenly distributed in the circumferential direction of the lower portion of the centering device main body, turnover plates provided with ratchets are arranged in half number of the strip-shaped grooves, plate springs are arranged at the bottoms of the turnover plates, friction plates are arranged in the other half number of alternating strip-shaped grooves, and a plurality of springs are arranged on the lower face of each friction plate. The screw pump cam type centering turnover plate anchor has the beneficial effects that oil pipe severe bending caused by an oil pressing pipe is avoided, double anti-rotating protection is achieved, vibration is eliminated, and accumulated soil is prevented from affecting the spring performance.

Description

technical field [0001] The invention relates to a tool for an oil field well, in particular to a screw pump cam type righting flap anchor, which is suitable for fixing a screw pump that is lowered into an oil well. Background technique [0002] At present, anchors for downhole screw pumps generally include support slip type tubing anchors, flap type tubing anchors, hydraulic type tubing anchors and torque anchors. The support slip type tubing anchor is anchored through the pressure tubing, which may easily cause severe bending of the tubing, resulting in serious radial wear of the tubing and increased vibration; the reliability of the flap type tubing anchor is low; the setting and unsealing process of the hydraulic tubing anchor is complicated ;Insufficient torsion resistance of the torque anchor. The problems in the above methods make the current downhole screw pump anchors unable to meet the complex downhole working conditions, which restricts the application and develop...

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): E21B23/01E21B17/10
CPCE21B17/1078E21B23/01
Inventor 吴晰刘宝梁闯
Owner 吴晰
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

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com