Long rubber sleeve and rubber formula thereof

A technology of long rubber tubes and rubber tubes, which is applied in earthwork drilling, wellbore/well components, sealing/isolation, etc., and can solve problems such as difficulty in unsealing

Inactive Publication Date: 2017-08-29
PETROCHINA CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to overcome the problem that the existing long rubber cartridge packer in the background technology is difficult to unseal, and to provide a long rubber cartridge, which has good elasticity and durability and can improve Unpacking performance of long rubber cartridge packer

Method used

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  • Long rubber sleeve and rubber formula thereof
  • Long rubber sleeve and rubber formula thereof
  • Long rubber sleeve and rubber formula thereof

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Experimental program
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Embodiment Construction

[0013] The present invention will be further described below in conjunction with accompanying drawing:

[0014] as attached figure 1 As shown, a long rubber cartridge includes a rubber cartridge main body 1, a liner 3 is installed inside the rubber cartridge main body 1, and the two ends of the liner 3 are vulcanization heads 4, and the vulcanization head 4 and the liner 3 are under pressure as a whole; The outer diameter of the barrel body 1 is 110-114 mm; two layers of pressure-bearing wire mesh 2 are added to the barrel body 1 . The formula of the long rubber cartridge, its components and proportioning are as follows by weight percentage: 92-95% of nitrile rubber and 5-8% of neoprene.

[0015] use as figure 2 The experimental device shown is to test the technical performance of the long rubber tube.

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Abstract

The invention relates to a long rubber sleeve. The problem that an existing long rubber sleeve packer is large in deblocking difficulty is mainly solved. The rubber sleeve is characterized in that a rubber sleeve main body (1) is internally provided with a liner tube (3), the two ends of the liner tube (3) are sulfuration heads (4), and the sulfuration heads (4) and the liner tube (3) bear pressure on the whole. The invention further provides a rubber formula of the long rubber sleeve, and the formula comprises the following components of, by weight, 92-95% of butadiene-acrylonitrile rubber and 5-8% of a chloroprene rubber adhesive in proportion. The long rubber sleeve is good in elasticity and durability and capable of improving the deblocking property of a long rubber sleeve packer.

Description

technical field [0001] The invention relates to the technical field of oil field production engineering, in particular to a long rubber barrel and its rubber formula. Background technique [0002] In the field of oil production engineering technology in oilfields, according to the research results of fine geology, using the vertical seepage resistance performance of the structural interface in thick oil layers, and mechanically plugging it, the invalid injection-production cycle in thick oil layers can be controlled, and the thick oil layers can be realized. Subdivide potential. However, the length of the rubber tube of the conventional packer is generally 0.3m, and due to the influence of the deployment error of the pipe string, it cannot seal the small interlayer and the structural interface with a thickness of less than 0.5m. To solve this problem, a long rubber cartridge packer with a length of 1 meter was used to eliminate the influence of the deployment error of the p...

Claims

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Application Information

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IPC IPC(8): E21B33/126E21B33/127C08L9/02C08L11/00
CPCE21B33/126C08L9/02E21B33/127C08L11/00
Inventor 任成锋郑焕军崔金哲高恒达孙岩
Owner PETROCHINA CO LTD
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