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
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  • 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

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  • 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

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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...

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Abstract

The invention provides a screw pump cam type righting flap anchor, in which a moving cam surface is arranged on the upper part of the upper central tube; Shoe, the arc-shaped lower end surface of the slip is in contact with the sliding cam surface, the two ends of the slip are respectively connected to the spring base, several spring holes are set on the main body of the centralizer, and gaskets are welded to the main body of the centralizer at the upper end of the spring; the lower part of the main body of the centralizer Several bar-shaped grooves are evenly distributed along the circumferential direction, half of the bar-shaped grooves are provided with ratchet flaps, leaf springs are arranged at the bottom of the flaps, friction plates are arranged in the other half of the alternate bar-shaped grooves, and multiple friction plates are installed under each friction plate. a spring. The invention has the beneficial effects of avoiding severe bending of the oil pipe caused by the pressure oil pipe, realizing double anti-rotation protection, eliminating vibration, and preventing the performance of the spring from being affected by accumulation of soil.

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

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B23/01E21B17/10
CPCE21B23/01E21B17/1078
Inventor 吴晰刘宝梁闯
Owner 吴晰
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