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Retrievable differential pressure sealing suspension feeder

A technology of differential pressure and action, applied in wellbore/well components, earth-moving drilling, etc., can solve the problems of unable to bear the quality, unable to unpack the injector, etc.

Inactive Publication Date: 2014-04-23
RES INST OF SHAANXI YANCHANG PETROLEUM GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The deficiencies in the prior art to be solved by this application are specifically: the delivery device cannot be unsealed, and cannot bear tools such as eddy current, throttling, and jetting with large mass.

Method used

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  • Retrievable differential pressure sealing suspension feeder

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Experimental program
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Effect test

Embodiment Construction

[0017] see figure 1 , the specific structure of the desirable differential pressure effect sealing suspension delivery device that the present invention relates to is,

[0018] Including upper joint 1, shear pin 2, main body 3, salvage neck 4, center pipe 5, slip teeth 6, rubber cartridge assembly 7, support pipe 8, cone 9, locking claw 10, sliding sleeve 11, cylinder liner 12. O-ring 13, O-ring 14, plug 15, O-ring 16, support sleeve 17, O-ring 18, O-ring 19, lock block 20, fixing ring 21, compression spring 22. Connecting ring 23, jacket 24, sliding pin 25, pressure ring 26, O-ring seal 27, piston 28, O-ring seal 29 and lower joint 30; wherein, upper joint 1, main body 3, and center pipe 5 are sealed in the seat The front is fixed by the shear pin 2, the salvage neck 4 is set on the main body 3, the main body 3 is covered with slip teeth 6 and the rubber cartridge assembly 7, the main body 3 is connected with a piston 28 by thread, and the piston 28 is covered with a The cy...

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PUM

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Abstract

The invention relates to a retrievable differential pressure sealing suspension feeder. The retrievable differential pressure sealing suspension feeder is characterized in that an upper connector, a body and a central tube are fixed in the front of a setting packer through shear pins; a fishing neck is disposed on the body; the body is sleeved with a slip insert and rubber cylinder assembly; a piston is connected to the body in a threaded manner; the piston is sleeved with a cylinder sleeve and forms a closed air chamber through an O-shaped seal ring; a lock block is disposed on the piston; a compression spring is fixed on the central tube through a fixing ring and a pressure ring; a lower connector is connected with the piston in a threaded manner. The retrievable differential pressure sealing suspension feeder has the advantage that anchoring and packing unblocking are achieved through the compression spring and differential pressure release.

Description

technical field [0001] The invention relates to a removable pressure difference function sealing suspension delivery device. Background technique [0002] Drainage and gas recovery of low-pressure and low-production gas wells need to be installed in the oil pipe, such as vortex tools, throttling tools, injection tools, etc., to meet the technical requirements of drainage and gas recovery for low-pressure and low-production gas wells and reduce the cost of drainage and gas recovery technologies. [0003] The deficiencies in the prior art to be solved by this application are specifically: the delivery device cannot be unsealed, and cannot bear tools such as eddy current, throttling, and jetting with relatively high mass. Contents of the invention [0004] The technical problem to be solved by the present invention is to provide a desirable differential pressure sealing suspension feeder to overcome the defects in the prior art. [0005] The technical solution of the present...

Claims

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Application Information

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IPC IPC(8): E21B23/01
Inventor 赵亚杰陶红胜申峰黄华高庆华董涛王卫刚刘通姚军
Owner RES INST OF SHAANXI YANCHANG PETROLEUM GRP
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