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Slip type puller damper

A technology of dampers and pumps, which is applied in wellbore/well parts, earthwork drilling, sealing/package, etc. It can solve problems such as personnel injury, swab sticking, fire, etc., and achieve reliable performance and well control accidents The effect of low probability and simple structure

Inactive Publication Date: 2013-02-06
SHAANXI ALLIANCE LOGISTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] During the pumping and drainage process of low-pressure gas wells, due to well kick or blowout, the wire rope will be twisted and stuck in the oil pipe, resulting in a pipe sticking accident; in severe cases, the downhole swabbing tool string may be ejected out of the wellhead, causing a fire , causing personal injury and equipment damage, polluting the environment
[0003] At present, most of the downhole dampers are hydraulic type, and the fluid throttling friction is used to achieve the purpose of damping, which does not meet the working conditions and requirements of swabbing and drainage

Method used

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  • Slip type puller damper

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Embodiment Construction

[0008] The slip-type drawer damper of the present invention includes a central rod 7, the outer cylinder 3 is sequentially socketed outside the central rod 7, one end of the external cylinder 3 is socketed with the upper joint 1, and the other end is sleeved with 6 slips The slips 6 are connected with the outer cylinder 3 through the spring 4 and the pressure ring 5, and the top of the center rod 7 is also provided with a nut 2.

[0009] The downhole swabbing tool string is as follows from top to bottom: steel wire rope, weighted rod, slip type drawer damper, weighted rod, drawer.

[0010] The weighted rod on the slip-type drawer damper is to provide resistance for the relative movement of the slip 6 and the cone, so that the slip 6 can be opened and anchored when needed.

[0011] The weighting rod under the damper is to prevent the slip teeth of the damper from protruding and stuck on the wall of the oil pipe due to the liquid resistance and buoyancy when the pump is lowered ...

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Abstract

The invention discloses a slip type puller damper and relates to a packer in a well hole. The slip type puller damper is characterized by comprising a central rod, an outer barrel is sleeved outside the central rod, one end of the outer barrel is sleeved with an upper joint, the other end of the outer barrel is sleeved with a slip which is connected with the outer barrel through a spring and a press ring, and the top end of the central rod is provided with a nut. The slip type puller damper is simple in structure, reliable in performance and capable of meeting the requirements of safe swabbing and discharging of a gas stringer, accident that a swabbing tool is ejected out of a shaft due to well kick and blowout during swabbing of the gas stringer is effectively prevented, and probability of well control accidents during swabbing is reduced to the greatest extent.

Description

technical field [0001] The present invention relates to a packer in a wellbore. Background technique [0002] During the pumping and drainage process of low-pressure gas wells, due to well kick or blowout, the wire rope will be twisted and stuck in the oil pipe, resulting in a pipe sticking accident; in severe cases, the downhole swabbing tool string may be ejected out of the wellhead, causing a fire , causing personal injury and equipment damage, polluting the environment. [0003] At present, most of the downhole dampers are of the hydraulic type, which use fluid throttling friction to achieve the purpose of damping, which does not meet the working conditions and requirements of swabbing and drainage. Contents of the invention [0004] The present invention aims to provide a slip type pump damper which prevents the pumping tool string from running up when the well kicks and blows out. [0005] The slip type drawer damper of the present invention is characterized in tha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B33/12E21B23/00
Inventor 王耀斌
Owner SHAANXI ALLIANCE LOGISTICS