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Preparation method for foam draining corrosion inhibitor

A technology of foam drainage and corrosion inhibitor, which is applied in the direction of chemical instruments and methods, earthwork drilling, drilling compositions, etc., can solve the problems of no drainage effect, no corrosion, no corrosion inhibition performance, etc., and achieve the reduction of medium Density, performance enhancement, corrosion control effects

Active Publication Date: 2015-12-09
延安久丰能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, there are drainage aids for water injection wells and oil well flushing in the market, and foam drainage agents for fluid accumulation in gas wells, but drainage aids have no drainage effect on fluid accumulation in gas wells, and foam drainage agents are not suitable for water injection wells and oil well flushing, and All have no corrosion inhibition performance, and cannot solve the corrosion of oil pipes, casings and sucker rods by liquid media in the process of water injection well flushing, oil well flushing, and gas well drainage.

Method used

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  • Preparation method for foam draining corrosion inhibitor
  • Preparation method for foam draining corrosion inhibitor
  • Preparation method for foam draining corrosion inhibitor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] This embodiment includes the following steps:

[0039] The first step: Add nonylphenol polyoxyethylene ether TX-18, then add sulfamic acid, mix well and slowly raise the temperature to 125~130℃, control the heating rate at 1.8 hours, and then at 130~140 The reaction was kept at ℃ for 5.5 hours, and the kettle was cooled at 50℃ to obtain nonylphenol polyoxyethylene ether sulfonic acid;

[0040] The molar ratio of the materials in the reaction process: nonylphenol polyoxyethylene ether: sulfamic acid=1:0.995.

[0041] Step 2: Add lauric acid to the reactor, add a certain amount of diethylenetriamine, stir well and raise the temperature to 170~180℃, react for 2.5 hours and then increase the temperature to 240~250℃, react for 4.5 hours, and cool to 110~120℃ , Add a certain amount of nonylphenol polyoxyethylene ether sulfonic acid, stir uniformly, react at 110-120°C for 3.5 hours, cool to 60°C and take out the kettle to obtain nonylphenol polyoxyethylene ether sulfonic acid imidaz...

Embodiment 2

[0052] This embodiment includes the following steps:

[0053] The first step: Add nonylphenol polyoxyethylene ether TX-21, then add sulfamic acid, mix well and slowly raise the temperature to 125~130℃, control the temperature rise rate at 1.8 hours, then at 130~140 The reaction was kept at ℃ for 5.5 hours, and the kettle was cooled at 50℃ to obtain nonylphenol polyoxyethylene ether sulfonic acid;

[0054] The molar ratio of the materials in the reaction process: nonylphenol polyoxyethylene ether: sulfamic acid=1:0.995.

[0055] Step 2: Add lauric acid to the reactor, add a certain amount of diethylenetriamine, stir well and raise the temperature to 170~180℃, react for 2.5 hours and then increase the temperature to 240~250℃, react for 4.5 hours, and cool to 110~120℃ , Add a certain amount of nonylphenol polyoxyethylene ether sulfonic acid, stir uniformly, react at 110-120°C for 3.5 hours, cool to 60°C and take out the kettle to obtain nonylphenol polyoxyethylene ether sulfonic acid i...

Embodiment 3

[0066] This embodiment includes the following steps:

[0067] The first step: Add nonylphenol polyoxyethylene ether TX-18, then add sulfamic acid, mix well and slowly raise the temperature to 125~130℃, control the heating rate at 1.8 hours, and then at 130~140 The reaction was kept at ℃ for 5.5 hours, and the kettle was cooled at 50℃ to obtain nonylphenol polyoxyethylene ether sulfonic acid;

[0068] The molar ratio of the materials in the reaction process: nonylphenol polyoxyethylene ether: sulfamic acid=1:0.995.

[0069] Step 2: Add lauric acid to the reactor, add a certain amount of diethylenetriamine, stir well and raise the temperature to 170~180℃, react for 2.5 hours and then increase the temperature to 240~250℃, react for 4.5 hours, and cool to 110~120℃ , Add a certain amount of nonylphenol polyoxyethylene ether sulfonic acid, stir uniformly, react at 110-120°C for 3.5 hours, cool to 60°C and take out the kettle to obtain nonylphenol polyoxyethylene ether sulfonic acid imidaz...

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Abstract

The invention provides a preparation method for a foam draining corrosion inhibitor. The preparation method comprises the steps that 1, alkylphenol polyoxyethylene is added in a reaction kettle, and then sulfamic acid is added, and a temperature-programmed reaction is performed to obtain alkylphenol polyoxyethylene ether sulfonate; 2, lauric acid imidazoline is synthesized, and then the alkylphenol polyoxyethylene ether sulfonate is added to obtain alkylphenol polyoxyethylene ether sulfonic acid imidazoline salt; 3, the alkylphenol polyoxyethylene is added in the reaction kettle, then the sulfamic acid is added, the temperature is increased, a reaction is performed, then diethanol amine is added, and the reaction is continuously performed to obtain sulfonic acid diethanolamine salt of the alkylphenol polyoxyethylene; 4, fatty amine polyoxyethylene ether is added in the reaction kettle, the sulfamic acid is added, the temperature is increased, a reaction is performed, then ammonia water is added, and the reaction is continuously performed to obtain sulfonic acid amine salt of the fatty amine polyoxyethylene ether; 5, the reactants are added in the reaction kettle, alkyl trimethyl benzyl quaternary ammonium salt and the fatty amine polyoxyethylene ether are added and mixed with water, and then a reaction is performed through heating to obtain the foam draining corrosion inhibitor. The foam draining corrosion inhibitor can effectively control corrosion of media in well washing and liquid draining process.

Description

Technical field [0001] The present invention relates to the technical field of petrochemical industry, in particular to a preparation method of a foam drainage corrosion inhibitor for low-pressure water-bearing gas wells that require chemical drainage for gas recovery due to water accumulation, foam well washing of water injection wells, and foam well washing of low-pressure oil wells . Background technique [0002] Currently on the market there are drainage aids for water injection wells and oil well flushing. Gas well fluids have foam drainage agents, but drainage aids have no drainage effect on gas well fluids, and foam drainage agents are not suitable for water injection wells and oil well flushing. There is no corrosion inhibition performance, and it cannot solve the corrosion of tubing, casing and sucker rod by liquid medium in the process of water injection well washing, oil well washing, and gas well effusion. Summary of the invention [0003] In order to overcome the def...

Claims

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Application Information

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IPC IPC(8): C09K8/54C09K8/52
CPCC09K8/52C09K8/54C09K2208/32
Inventor 郭学辉杜素珍
Owner 延安久丰能源科技有限公司
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