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High temperature-resistant and high pressure-resistant anticorrosive curing sealant and preparation method thereof

A sealant, high temperature resistant technology, used in non-polymer organic compound adhesives, adhesives, non-polymer adhesive additives, etc. problem, to achieve the effect of enhancing the polarity of the urethane group, avoiding corrosion, and preventing metal fretting wear

Active Publication Date: 2019-01-11
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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  • High temperature-resistant and high pressure-resistant anticorrosive curing sealant and preparation method thereof
  • High temperature-resistant and high pressure-resistant anticorrosive curing sealant and preparation method thereof
  • High temperature-resistant and high pressure-resistant anticorrosive curing sealant and preparation method thereof

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Effect test

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-resistant and high pressure-resistant anticorrosive curing sealant and a preparation method thereof. The sealant contains the following raw materials in parts by weight: a methacrylate monomer, a stabilizer, a reaction accelerator, cumene hydroperoxide, cyclohexanone peroxide, benzoyl peroxide, methyl ethyl ketone peroxide, a silane coupling agent, high pressure-resistant modified resin, nano silica, ethyl cellulose, calcium carbonate, p-hydroxyanisole, ethylene glycol monoethyl ether acetate, diisocyanate and glycol. The sealant is mainly used for the threaded connection of downhole tubing in an oilfield development process. The sealant disclosed by the invention has the advantages that fitting surfaces of pipelines can be tightly sealed to avoida leakage phenomenon caused by pressure relief of threaded parts of oil pipelines of an oil field and guarantee the oil production efficiency; the internal space among parts is filled and the sealantis cured into a flexible rubber layer to improve the torque strength, prevent the metal fretting wear and avoid the corrosion of the threaded parts; and therefore, the sealant has a certain economicbenefit and social value and has a board popularization prospect.

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 Applications(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