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A compression packer rubber cartridge and its preparation method and application

A compression packer and rubber cartridge technology, used in sealing/isolation, other household appliances, applications, etc., can solve the problems of inconsistent shrinkage rate, poor compatibility of rubber cartridge substrates, and rubber cartridge seal failure, etc. Improve pressure bearing capacity and sealing effect, good ductility and elasticity, and prolong service life

Inactive Publication Date: 2011-12-21
上海道氟实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the rubber cartridge is subjected to a high pressure difference in a high temperature environment, the shoulder of the rubber cartridge is easily crushed, making the seal of the rubber cartridge ineffective, resulting in low pressure difference resistance and short service life of the packer
Therefore, the currently used high-temperature and high-pressure packer rubber cylinders often add metal rings or metal mesh protection structures at both ends of the rubber cylinder, which basically meet the use requirements when the pressure difference is not very high. The further increase of the rubber cylinder shoulder still cannot change the shortcoming of fracturing in the case of protruding deformation, resulting in damage to the rubber cylinder
In order to further improve the above-mentioned shortcomings, there is a technology to implement a metal spring shoulder structure and a high-temperature plastic shoulder structure on the shoulder of the rubber tube. However, due to poor compatibility with the base material of the rubber tube and inconsistent shrinkage, the adhesive performance of the shoulder part is poor. Poor, especially under high temperature and high pressure, still can not solve the problem that the shoulder of the rubber tube is easy to protrude and increase, and then be fractured

Method used

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  • A compression packer rubber cartridge and its preparation method and application
  • A compression packer rubber cartridge and its preparation method and application
  • A compression packer rubber cartridge and its preparation method and application

Examples

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preparation example Construction

[0019] The preparation method of the compression packer rubber cartridge of the present invention for example comprises the following steps:

[0020] (1) Preparation of rubber compound

[0021] The rubber compound used to prepare the main body and / or shoulder of the compression packer rubber cartridge of the present invention includes 100 parts by weight of rubber material, 30-90 parts by weight (preferably 40-85 parts by weight) of carbon black and / or white Carbon black and 1-10 parts by weight of crosslinking agent. Optionally, crosslinking accelerators, plasticizers, anti-aging agents, lubricants, mineral fillers, processing aids or mixtures thereof commonly used in the rubber field can also be added.

[0022] The above-mentioned cross-linking agent may be a cross-linking agent commonly used in the field of rubber, for example, including a free radical cross-linking agent or a redox cross-linking agent. Preferable examples include, for example, dicumyl peroxide, 2,5-dimet...

Embodiment 1

[0044] Get the raw materials ready according to the following formula (parts by weight): hydrogenated nitrile butadiene rubber 100 parts of C4369 (Lanxess Company), 85 parts of N550 carbon black (Cabot Company), 2.5 parts of stearic acid, 1.5 parts of antioxidant Naugard 445 (Chemtura Company), dicumyl peroxide (40% effective Components) 5.0 parts, 5.0 parts of cross-linking accelerator Pertac / GR (Kettlitz-Chemie, Germany), 10.0 parts of trioctyl trimellitate, 5.0 parts of zinc oxide; add the above raw materials into an open mill, and mix at 80°C Mix evenly to obtain hydrogenated nitrile rubber mix. Weigh 10Kg of the above-mentioned hydrogenated nitrile rubber compound, thin it to a thickness of 2mm, cut it into small pieces, put it into a 50L barrel, and add butyl acetate / methyl isobutyl ketone=50:50 mass ratio configuration Mix solvent 25Kg, start stirring, until the hydrogenated nitrile butadiene rubber mix dissolves evenly. The glue of gained concentration 28.5% is coat...

Embodiment 2

[0046] Get the raw materials ready according to the following formula (parts by weight): hydrogenated carboxylated nitrile rubber 100 parts of XT (Lanxess Corporation), 50 parts of N550 carbon black, 35 parts of white carbon black, 2.5 parts of stearic acid, 4451.5 parts of antioxidant Naugard, 7.0 parts of dicumyl peroxide (40% active ingredient), triene 1.5 parts of propyl isocyanurate, 5.0 parts of trioctyl trimellitate, and 5.0 parts of zinc oxide; put the above raw materials into an open mill, and mix them evenly at 80°C to obtain a hydrogenated carboxylated nitrile rubber compound . Weigh 10Kg of the above-mentioned hydrogenated nitrile rubber compound, thin it to a thickness of 2mm, cut it into small pieces, put it into a 50L barrel, and add butyl acetate / methyl isobutyl ketone=50:50 mass ratio configuration Mix 30Kg of solvent, start stirring until the hydrogenated nitrile rubber mix dissolves evenly. The glue of gained concentration 25.0% is coated on the area dens...

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Abstract

The invention relates to a compression packer rubber cylinder, a preparation method and application thereof. The compression packer rubber cartridge has a composite shoulder of fiber or fabric and rubber material. Compared with the existing compression packer rubber sleeve, the compression packer rubber sleeve of the present invention has better adhesion, ductility, elasticity, pressure bearing capacity and sealing effect, thereby prolonging the use of the rubber sleeve life.

Description

technical field [0001] The invention relates to a novel compression packer rubber cartridge and its preparation method and use, and is especially suitable for operations such as layered water injection, well washing, well cementing, fracturing, acidification and water shutoff in oil fields. technical background [0002] Packer is a key tool for downhole oil production in oilfields, and is widely used in oilfield separate injection, layered reconstruction, fracturing, layered oil recovery, mechanical pipeline water plugging and other operational purposes. As the main component of the packer, the quality of the rubber cartridge directly affects the normal use effect and service life of the packer, and plays a decisive role in the packer. When the rubber cartridge is subjected to a high pressure difference in a high-temperature environment, the shoulder of the rubber cartridge is easily fractured, making the seal of the rubber cartridge ineffective, resulting in a low pressure ...

Claims

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Application Information

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IPC IPC(8): E21B33/127C08L15/00C08L13/00C08L27/12C08K3/04C08K3/36B29D22/00
Inventor 李恩军
Owner 上海道氟实业有限公司
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