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High-temperature pressure-bearing composite insulator composition of corrosion-resistant gas and preparation method thereof

An insulator and corrosion-resistant technology, applied in the direction of plastic/resin/wax insulators, organic insulators, etc., can solve problems affecting the service life and corrosion of petroleum logging instruments, so as to save logging time, prolong service life, and improve logging speed effect

Active Publication Date: 2013-08-28
西安永兴科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The biggest technical problem often encountered in the logging process of petroleum logging instruments used in oilfield development is: petroleum logging instruments are used in downhole high temperature, high pressure, oil, gas, water and harmful gas hydrogen sulfide (H 2 S), carbon dioxide (CO 2 ) and other complex medium environments, the probe parts of petroleum logging instruments are easily damaged by hydrogen sulfide (H 2 S), carbon dioxide (CO 2 ) gas corrosion, even if a well is not measured in the logging process, the probe part of the petroleum logging instrument will be covered with hydrogen sulfide (H 2 S), carbon dioxide (CO 2 ) gas corrosion, which seriously affects the service life of petroleum logging instruments
The best domestic fluorine rubber sealing system can not solve this technical problem

Method used

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  • High-temperature pressure-bearing composite insulator composition of corrosion-resistant gas and preparation method thereof
  • High-temperature pressure-bearing composite insulator composition of corrosion-resistant gas and preparation method thereof
  • High-temperature pressure-bearing composite insulator composition of corrosion-resistant gas and preparation method thereof

Examples

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Effect test

preparation example Construction

[0039] A method for preparing composite insulators is carried out according to the following steps:

[0040] 1), the choice of glass fiber yarn

[0041] The glass fiber yarn uses boron-free, alkali-free and twist-free direct yarn, and its fiber specification ranges from 600tex-2400tex. All glass fiber yarns must be covered with a special sizing agent;

[0042] 2) Surface treatment of glass fiber yarn

[0043] Because of the significant gaps between the glass fiber yarn and the resin interface, the capillary action causes water to penetrate into the composite along the interface, and further weakens the bond between the resin and the glass fiber yarn, which reduces the physical and chemical properties of the composite material. For this, use KH560, Y-aminopropyl triethoxysilane NH 2 -CH 2 -CH 2 -CH 2 -Si-COC 2 H 5 As a glass fiber yarn coupling agent; the mass ratio of coupling agent to glass fiber yarn is coupling agent: glass fiber yarn = 1.5 parts to 2.5 parts: 98.5 parts to 97.5 pa...

Embodiment 1

[0064] A pressure-bearing composite insulator composition capable of resisting corrosion gas. The composite insulator composition is composed of 75 parts to 85 parts of glass fiber yarn and 25 parts to 15 parts of resin glue in a mass ratio.

[0065] A method for preparing composite insulators is carried out according to the following steps:

[0066] 1), the choice of glass fiber yarn

[0067] Glass fiber yarn uses boron-free, alkali-free, non-twist and acid-resistant direct yarn, and its fiber specification ranges from 600tex-2400tex. All glass fiber yarns used must be covered with a special sizing agent;

[0068] 2) Surface treatment of glass fiber yarn

[0069] Because of the significant gaps between the glass fiber yarn and the resin interface, the capillary action causes water to penetrate into the composite along the interface, and further weakens the bond between the resin and the glass fiber yarn, which reduces the physical and chemical properties of the composite material. For...

Embodiment 2

[0093] A pressure-bearing composite insulator composition capable of resisting corrosive gas. The composite insulator composition is composed of 77 to 83 parts of glass fiber yarn and 23 to 17 parts of resin glue in a mass ratio.

[0094] A method for preparing composite insulators is carried out according to the following steps:

[0095] 1), the choice of glass fiber yarn

[0096] Glass fiber yarn uses boron-free, alkali-free, non-twist and acid-resistant direct yarn, and its fiber specification ranges from 600tex-2400tex. All glass fiber yarns used must be covered with a special sizing agent;

[0097] 2) Surface treatment of glass fiber yarn

[0098] Because of the significant gaps between the glass fiber yarn and the resin interface, the capillary action causes water to penetrate into the composite along the interface, and further weakens the bond between the resin and the glass fiber yarn, which reduces the physical and chemical properties of the composite material. For this, use K...

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Abstract

The invention discloses a high-temperature pressure-bearing composite insulator composition of a corrosion-resistant gas and a preparation method thereof. The composition consists of the following components in part by mass: 75 to 85 parts of glass fiber yarn and 25 to 15 parts of resin adhesive. The preparation method comprises the following steps: selection of the glass fiber yarn; surface treatment of the glass fiber yarn; selection of the resin adhesive; a process of winding; cold press molding; injection molding of resin: closing an upper valve and a lower valve of a preforming mold, and putting the preforming mold into oil for heating, orderly dividing the temperature of the oil into three sections, and heating and demolding to finish a high-temperature pressure-bearing composite insulator which can resist the stress corrosion of H2S and CO2; and performance test, wherein if a measured insulation value is greater than or equal to 500MPa, the high-temperature pressure-bearing composite insulator is a qualified product. The high-temperature pressure-bearing composite insulator effectively prevents the immersion and the stress corrosion of harmful gases such as hydrogen sulfide and carbon dioxide of the outer surface of an oil well logging tool, prolongs the service life of the oil well logging tool, saves well logging time and increases well logging speed. Therefore, the high-temperature pressure-bearing composite insulator is widely used for oil exploration instruments and the places where corrosive gases can immerse.

Description

Technical field [0001] The invention relates to an insulator material capable of resisting corrosion gas, in particular to a high-temperature pressure-bearing composite insulator composition capable of resisting corrosion gas and a preparation method. Background technique [0002] Petroleum logging tools used in oilfield development, the biggest technical problem often encountered in the logging process is: oil logging tools in the downhole high temperature, high pressure, oil, gas, water and harmful gas hydrogen sulfide (H 2 S), carbon dioxide (CO 2 ) And other complex media environments, where there are oil logging instrument probes, it is easy to be hydrogen sulfide (H 2 S), carbon dioxide (CO 2 ) Gas corrosion, even if a well is not completed during the logging process, the probe part of the petroleum logging tool is covered by hydrogen sulfide (H 2 S), carbon dioxide (CO 2 ) Gas corrosion seriously affects the service life of petroleum logging tools. The best domestic fluoror...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L101/00C08K9/06C08K7/00C08K3/36C08L81/04B29C45/78C08J5/08H01B3/47
Inventor 吴亚民
Owner 西安永兴科技发展有限公司
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