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A kind of high temperature and high pressure resistant anticorrosion curing sealant and preparation method thereof

A sealant and high-temperature-resistant technology, which is applied in the direction of non-polymer organic compound adhesives, adhesives, non-polymer adhesive additives, etc., can solve the problem of toxic substances in the sealant, complicated use procedures, and loose bonding, etc. problem, to achieve the effect of enhancing the polarity of the urethane group, avoiding corrosion, and preventing metal fretting wear

Active Publication Date: 2021-08-31
DONGYING XIANHENG IND & TRADE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a high temperature and high pressure resistant anti-corrosion curing sealant and its preparation method, which solves the problem that the existing sealant in the background technology contains toxic substances, has low impact strength, is not resistant to high temperature, has poor sealing effect, is not tightly bonded, and has complicated use procedures. Problems such as high cost, high leakage rate, and inability to prevent corrosion

Method used

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  • A kind of high temperature and high pressure resistant anticorrosion curing sealant and preparation method thereof
  • A kind of high temperature and high pressure resistant anticorrosion curing sealant and preparation method thereof
  • A kind of high temperature and high pressure resistant anticorrosion curing sealant and preparation method thereof

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Embodiment 1

[0024] The high temperature and high pressure resistant anticorrosion curing sealant of this embodiment comprises the following raw materials in parts by weight: 90 parts of methacrylate monomer, 3 parts of ethylenediaminetetraacetic acid and o-aminophenol, tetrahydroquinoline, phenylthiourea , tin acetylacetonate, 5 parts of zinc acetate, 2 parts of cumene hydroperoxide, 0.6 parts of cyclohexanone peroxide, 5 parts of benzoyl peroxide, 4 parts of methyl ethyl ketone peroxide, 8 parts of silane coupling agent 35 parts of high pressure resistant modified resin, 6 parts of nano silicon dioxide, 3.4 parts of ethyl cellulose, 4 parts of calcium carbonate, 5 parts of p-hydroxyanisole, 1 part of ethylene glycol ethyl ether acetate, 2 parts of diisocyanate , 3 parts of glycols.

[0025] The high-pressure-resistant modified resin is prepared by the following method: heating tetramethylbisphenol F-type cyanate, m-phenylene bismaleimide, and dicumyl peroxide at a heating temperature of ...

Embodiment 2

[0028]The high temperature and high pressure resistant anticorrosion curing sealant of this embodiment includes the following raw materials in parts by weight: 105 parts of methacrylate monomer, 7 parts of 2,6-di-tert-butyl p-cresol, 7 parts of benzoquinone, o-sulfonylbenzene Imide, 1,5-diphenylcarbazide, 2 parts of triphenylphosphine, 3.8 parts of cumene hydrogen peroxide, 0.2 parts of cyclohexanone peroxide, 2.7 parts of benzoyl peroxide, peroxide 3.8 parts of methyl ethyl ketone, 7 parts of silane coupling agent, 38 parts of high pressure resistant modified resin, 2 parts of nano silicon dioxide, 0.1 part of ethyl cellulose, 3.3 parts of calcium carbonate, 1 part of p-hydroxyanisole, 3 parts of ethylene glycol ether acetate, 1 part of diisocyanate, 5 parts of diol.

[0029] The high-pressure-resistant modified resin is prepared by the following method: heating tetramethylbisphenol F-type cyanate, m-phenylene bismaleimide, and dicumyl peroxide at a heating temperature of 108...

Embodiment 3

[0032] The high temperature and high pressure resistant anticorrosion curing sealant of the present embodiment includes the following raw materials in parts by weight: 100 parts of methacrylate monomer, ethylenediaminetetraacetic acid, o-aminophenol, methoxyhydroquinone, p-cresol , m-cresol, 6 parts of 2,6-di-tert-butyl-p-cresol, tetrahydroquinoline, phenylthiourea, tin acetylacetonate, zinc acetate, copper isooctanoate, formimide, o-sulfonyl benzoyl 4 parts of imine, 0.2 parts of cumene hydroperoxide, 2 parts of cyclohexanone peroxide, 3.5 parts of benzoyl peroxide, 2.1 parts of methyl ethyl ketone peroxide, 5 parts of silane coupling agent, high pressure resistant 40 parts of permanent resin, 4 parts of nano silicon dioxide, 1.7 parts of ethyl cellulose, 0.8 parts of calcium carbonate, 2 parts of p-hydroxyanisole, 2 parts of ethylene glycol ethyl ether acetate, 3 parts of diisocyanate, 2 parts of diol share.

[0033] The high-pressure-resistant modified resin is prepared by...

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Abstract

The invention discloses a high temperature and high pressure resistant anticorrosion curing sealant and a preparation method thereof, comprising the following raw materials in parts by weight: methacrylate monomer, stabilizer, reaction accelerator, cumene hydrogen peroxide, peroxide ring Hexanone, benzoyl peroxide, methyl ethyl ketone peroxide, silane coupling agent, high pressure resistant modified resin, nano silicon dioxide, ethyl cellulose, calcium carbonate, p-hydroxyanisole, ethylene glycol Ether acetate, diisocyanate, and diols are mainly used in the threaded connection of downhole oil pipes in the oil field development process. The sealant prepared by the invention can make the matching surfaces of the pipelines tight, avoiding pressure relief on the threaded parts of the oil field oil pipes. Leakage phenomenon ensures oil output efficiency, fills the internal space between parts and solidifies into a flexible adhesive layer to improve torque strength, prevents metal fretting and wear, and avoids corrosion of thread parts. It has certain economic benefits and social value. Promotion bright future.

Description

technical field [0001] The invention belongs to the field of sealant preparation, and in particular relates to a high-temperature, high-pressure, anti-corrosion and curing sealant and a preparation method thereof. Background technique [0002] In the process of oil field development, the downhole oil pipe is connected into a downhole pipe string through the threads at both ends, and the crude oil extracted underground is transported to the ground through the oil well pipe string. Due to the problem of insufficient sealing of the threads during the threaded connection of ordinary oil pipes, crude oil is easily leaked from the threaded parts, reducing oil recovery efficiency. At the same time, crude oil will also corrode the threads, further reducing oil recovery efficiency, and in severe cases, leading to thread failure. As a result, the tubing string breaks and an oil well accident occurs. [0003] The traditional oil pipe thread connection sealing materials include hemp sk...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J4/02C09J4/06C09J11/04C09J11/06
CPCC09J4/06C09J11/04C09J11/06
Inventor 姚大伟李汝强付显威先若尘
Owner DONGYING XIANHENG IND & TRADE