Packer

A packer and piston cylinder technology, applied in the field of packers, can solve the problems of poor setting reliability, difficulty in unpacking, and failure in recovery, and achieve the effects of ensuring setting strength, improving setting efficiency and ensuring stability.

Active Publication Date: 2020-11-13
CHINA UNIV OF PETROLEUM (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing retrievable systems often have the problem of unblocking and failure of recovery, which brings a lot of inconvenience to on-site operations and even affects the smooth progress of well completion operations.
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Method used

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Embodiment Construction

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the accompanying drawings in the embodiments of the application. Apparently, the described embodiments are only part of the embodiments of the application, not all of them. Based on the implementation manners in this application, all other implementation manners obtained by persons of ordinary skill in the art without creative efforts fall within the scope of protection of this application.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs. The terminology used herein in the description of the application is only for the purpose of describing specific embodiments, and is not intended to limit the application.

[0027] see Figure 1 to Figure 5 A packer provided in this embodiment incl...

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PUM

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Abstract

The invention provides a packer. The packer comprises a center pipe, a piston cylinder, a plurality of rubber cylinders, a locking sleeve, a locking part and a stopping part, wherein a hole is formedin the center pipe; the piston cylinder is movably arranged outside the center pipe in a sleeving manner; the rubber sleeves are arranged on the piston cylinder in a sleeving manner; the locking seatis arranged outside the center pipe in a sleeving manner and stretches into the piston cylinder and forms a liquid inlet cavity communicating to the hole with the piston cylinder, and the piston cylinder can move relative to the center pipe under the action of a liquid in the liquid inlet cavity to further compress the rubber sleeve; the locking part is arranged on the piston cylinder; and the stopping part is arranged on the locking sleeve and is used for restraining the locking part to move to the rubber sleeve after the piston cylinder compresses the rubber sleeve. The embodiment of the invention provides the packer which is easy to operate, reliable to seal, simple in structure and low in processing cost.

Description

technical field [0001] The present application relates to the technical field of well cementing and completion operations in oil and gas fields, in particular to a packer. Background technique [0002] In oil and gas field cementing and completion operations, the performance of the packer directly affects the operation effect. [0003] Existing packer systems mostly use hydraulically compressed rubber cartridges to expand and set the rubber cartridges. However, the sealing performance of the rubber cartridge of the existing packer system is unreliable, and the problem of unreliable setting and hanging is prone to occur after setting. In addition, existing packer systems can be classified into non-retrievable systems and retrievable systems. However, the existing retrievable systems often have the problem of unsealing difficulties leading to recovery failures, which brings a lot of inconvenience to on-site operations and even affects the smooth progress of well completion o...

Claims

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Application Information

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IPC IPC(8): E21B33/128
CPCE21B33/1208E21B33/1285
Inventor 臧传贞姜汉桥黄中伟李俊键穆总结张宝瑞贾洪革史怀忠史明豪刘丁源
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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