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Multi-round high-and-low temperature thermal recovery packer rubber sleeve and production method thereof

A technology of packers and rubber cartridges, applied in the field of multi-round high-low temperature thermal recovery packer rubber cartridges, to achieve the effects of convenient operation, stable quality, good fluidity and compactness

Active Publication Date: 2015-04-22
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a multi-round high-low temperature thermal recovery packer rubber cartridge, which solves the problem that the existing packer rubber cartridge cannot meet the requirements of maintaining high-pressure sealing at high temperature and low temperature after multiple rounds of steam huffing and puffing. The question of reliability requirements

Method used

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  • Multi-round high-and-low temperature thermal recovery packer rubber sleeve and production method thereof
  • Multi-round high-and-low temperature thermal recovery packer rubber sleeve and production method thereof
  • Multi-round high-and-low temperature thermal recovery packer rubber sleeve and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Multiple rounds of high and low temperature thermal recovery packer rubber cartridges, such as figure 1 As shown, it includes a flexible graphite rubber sleeve, and the outer sleeve of the flexible graphite rubber sleeve is covered with a modified polytetrafluoroethylene outer sleeve. The wall thickness of the flexible graphite rubber sleeve is 10 mm, and the wall thickness of the modified polytetrafluoroethylene outer sleeve is 1 mm.

[0032] The flexible graphite rubber cartridge contains the following components in weight percentage: 0.2% of talc powder, 0.2% of carbon fiber, and the balance is flexible graphite.

[0033] The modified polytetrafluoroethylene outer sleeve contains the following components in mass percentage: 10% of carbon fiber, 8% of graphite, 25% of tin bronze, and the balance is polytetrafluoroethylene.

[0034] The preparation method of the multi-round high and low temperature thermal recovery packer rubber cartridge in this embodiment includes t...

Embodiment 2

[0041]The multi-round high-low temperature thermal recovery packer rubber sleeve includes a flexible graphite rubber sleeve, and the outer sleeve of the flexible graphite rubber sleeve is covered with a modified polytetrafluoroethylene outer sleeve. The wall thickness of the flexible graphite rubber sleeve is 20 mm, and the wall thickness of the modified polytetrafluoroethylene outer sleeve is 2 mm.

[0042] The flexible graphite rubber cartridge contains the following components in weight percentage: 0.3% of talc powder, 0.1% of carbon fiber, and the balance is flexible graphite.

[0043] The modified polytetrafluoroethylene outer sleeve contains the following components in mass percentage: 8% carbon fiber, 10% graphite, 23% tin bronze, and the balance is polytetrafluoroethylene.

[0044] The preparation method of the multi-round high and low temperature thermal recovery packer rubber cartridge in this embodiment includes the following steps:

[0045] 1) After mixing flexibl...

Embodiment 3

[0051] The multi-round high-low temperature thermal recovery packer rubber sleeve includes a flexible graphite rubber sleeve, and the outer sleeve of the flexible graphite rubber sleeve is covered with a modified polytetrafluoroethylene outer sleeve. The wall thickness of the flexible graphite rubber sleeve is 30 mm, and the wall thickness of the modified polytetrafluoroethylene outer sleeve is 1.5 mm.

[0052] The flexible graphite rubber cartridge contains the following components in weight percentage: 0.5% of talc powder, 0.15% of carbon fiber, and the balance is flexible graphite.

[0053] The modified polytetrafluoroethylene outer sleeve contains the following components in mass percentage: 12% of carbon fiber, 6% of graphite, 27% of tin bronze, and the balance is polytetrafluoroethylene.

[0054] The preparation method of the multi-round high and low temperature thermal recovery packer rubber cartridge in this embodiment includes the following steps:

[0055] 1) After m...

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Abstract

The invention discloses a multi-round high-and-low temperature thermal recovery packer rubber sleeve and a production method thereof. The rubber sleeve comprises a flexible graphite rubber sleeve body, and a modified polytetrafluoroethylene outer sleeve is sleeved on the outside of the flexible graphite rubber sleeve body. The rubber sleeve overall has good mobility and compactness, high-and-low temperature seal can be achieved, and cracks can be prevented. The adaptation temperature is in a range of minus 20 DEG C to 360 DEG C, and the seal performance within the temperature range reach more than 20 MPa; the rubber sleeve can meet requirements for sealing of the packer in the high-temperature steam injection and cooling oil recovery work conditions when being used on a down-hole packer for pacing oil-casing circular space, and the rubber sleeve can still bear high-pressure seal effectively under the high temperature and low temperature multi-time alternative changes; the high-pressure-bearing seal performance reliability can be maintained in the high and low temperatures after multi-round steam huff and puff, and the rubber sleeve is particularly applicable to processes of oil field steam huff and puff, steam driving and the like in heavy-oil thermal recovery.

Description

technical field [0001] The invention belongs to the technical field of packing equipment for oil and gas fields, and specifically relates to a multi-round high-low temperature thermal recovery packer rubber cartridge, and also relates to a multi-round high-low temperature thermal recovery packer rubber cartridge. Background technique [0002] The heavy oil thermal recovery process usually requires multiple rounds of high-temperature steam injection-low-temperature pumping operations; wells with layered measures require thermal packers to maintain reliable sealing during high-temperature steam injection and low-temperature pumping. The rubber sleeve is one of the core components of the downhole thermal recovery packer, so it is required that the thermal recovery packer rubber sleeve can withstand high pressure difference at room temperature and 350°C high temperature. At present, the high-temperature-resistant rubber cartridges used in China include pure graphite and modified...

Claims

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Application Information

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IPC IPC(8): E21B33/126C08L27/18C08K13/04C08K7/06C08K3/04C08K3/08
CPCC08K3/04C08K3/08C08K7/06C08K2003/085C08L2201/08E21B33/126C08L27/18
Inventor 马宏伟李辉杨军虎沈威司光礼王新志董建立
Owner CHINA PETROLEUM & CHEM CORP
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