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A New Bactericidal Corrosion Inhibitor

A technology of corrosion inhibitor and double quaternary ammonium salt, which is applied in the direction of corrosion/scaling inhibition of treatment equipment, petroleum industry, water/sludge/sewage treatment, etc. The effect of corrosion sterilization is good, the cost of dosing is low, and the process of dosing is simplified

Inactive Publication Date: 2016-04-20
XI'AN PETROLEUM UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there are a large number of corrosion inhibitors on the market, but because they do not have a bactericidal effect, additional bactericides need to be added to the system’s corrosion control measures. On the one hand, it is necessary to increase the dosing equipment, and on the other hand, it is necessary to carry out corrosion inhibitors. The experimental evaluation of the compatibility with fungicides has increased unnecessary cost input. Therefore, the development of fungicides and corrosion inhibitors can reduce the cost of corrosion control, improve the corrosion control effect of the medium in the oilfield production system, and expand the scope of oilfield corrosion control and bacterial control. In the field of application, it is necessary to continuously develop new products and new technologies to meet the ever-changing requirements of oilfield production

Method used

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  • A New Bactericidal Corrosion Inhibitor
  • A New Bactericidal Corrosion Inhibitor
  • A New Bactericidal Corrosion Inhibitor

Examples

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Effect test

Embodiment 1

[0027] Formula composition: based on 100% of composition mass, quinoline and alkyl tertiary ammonium diquaternary ammonium salt 15%, alkyl tertiary ammonium diquaternary ammonium salt 10%, organic urea compound 5%, organic amine compound 4% , 10% of alkyl quaternary ammonium salt, 3% of glutaraldehyde, 3% of acetylene alcohol, 5% of higher fatty amide derivatives, 4% of alkylphenol polyoxyethylene polyoxypropylene ether, and the rest is water.

[0028] The synthesis process method of the biquaternary ammonium salt of quinoline and alkyl tertiary ammonium is: add dodecyl tertiary amine in the reaction kettle, then dropwise add equimolar p-dichlorobenzyl, slowly heat up after the dropwise addition to 120°C, the stirring reaction time is 4 hours, and then equimolar quinoline is added dropwise, and the temperature is slowly raised to 160°C after the dropwise addition, and the stirring reaction time is 12 hours.

[0029] The synthesis process of the double quaternary ammonium salt ...

Embodiment 2

[0039] Formula composition: based on 100% of composition mass, quinoline and alkyl tertiary ammonium diquaternary ammonium salt 12%, alkyl tertiary ammonium diquaternary ammonium salt 15%, organic urea compound 6%, organic amine compound 3% , 12% of alkyl quaternary ammonium salt, 3% of glutaraldehyde, 2% of acetylene alcohol, 4% of higher fatty amide derivatives, 3% of alkylphenol polyoxyethylene polyoxypropylene ether, and the rest is water.

[0040] The synthetic process method of the double quaternary ammonium salt of quinoline and alkyl tertiary ammonium is: add dodecyl tertiary amine in the reaction kettle, then dropwise add equimolar p-dichlorobenzyl, slowly warm up to 120 °C, the stirring reaction time is 4 hours, and then equimolar quinoline is added dropwise, and the temperature is slowly raised to 160 °C after the dropwise addition, and the stirring reaction time is 12 hours.

[0041] The synthesis process of the double quaternary ammonium salt of the alkyl tertiary...

Embodiment 3

[0051] Formula composition: based on 100% of composition mass, quinoline and alkyl tertiary ammonium diquaternary ammonium salt 10%, alkyl tertiary ammonium diquaternary ammonium salt 15%, organic urea compound 8%, organic amine compound 5% , 15% of alkyl quaternary ammonium salt, 4% of glutaraldehyde, 3% of acetylene alcohol, 5% of higher fatty amide derivatives, 5% of alkylphenol polyoxyethylene polyoxypropylene ether, and the rest is water.

[0052] The synthesis process of the diquaternary ammonium salt of quinoline and alkyl tertiary ammonium is: add dodecyl tertiary amine in the reaction kettle, then dropwise add equimolar p-dichlorobenzyl, slowly heat up after the dropwise addition to 120°C, the stirring reaction time is 4 hours, and then equimolar quinoline is added dropwise, and the temperature is slowly raised to 160°C after the dropwise addition, and the stirring reaction time is 12 hours.

[0053] The synthesis process of the double quaternary ammonium salt of alky...

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Abstract

The invention discloses a novel bactericidal corrosion inhibitor. The corrosion inhibitor comprises the following components in percentage by mass: measured by the mass of the composition as 100%, 1-30% of biquaternary ammonium salt of quinoline and alkyl tertiary ammonium, 1-30% of biquaternary ammonium salt of alkyl tertiary ammonium, 1-15% of organic urea compound, 1-10% of organic amine compound, 1-20% of alkyl quaternary ammonium salt, 1-10% of glutaraldehyde, 1-10% of alkynyl alcohol, 1-10% of higher fatty acid amides derivative, 1-10% of alkylphenol polyoxyethylene polyoxypropylene ether and the balance of water; the corrosion inhibitor disclosed by the invention can control the corrosion of media with different oil-water ratios in the oil well output liquid of an oil-gas-water gathering and transportation system in the oilfield production, when the corrosion inhibitor addition reaches 100mg / L, the inhibition rate can reach above 75%, the corrosion rate can be controlled at below 0.076mm / a, the sterilization rate reaches above 99%, and the problems that the adaptation range of a commercially available corrosion inhibitor to the change in the properties of the media of the oil well output liquid is small, the inhibition rate is low, the emulsion affects demulsification and the commercially available corrosion inhibitor can not control the bacterial reproduction of the medium are solved.

Description

technical field [0001] The invention relates to the technical field of oilfield production, in particular to a novel bactericidal corrosion inhibitor, which is mainly used for the control of medium bacteria and corrosion in oil-gas-water gathering and transportation pipelines, injection water gathering and transportation pipelines, water injection wells and oil well pipes in oilfield production. technical background [0002] During the production process of the oil field, due to the decrease of the temperature of the medium in the oil, gas and water gathering and transportation pipelines, injection water gathering and transportation pipelines, water injection wells and oil well pipes of the entire production system, a large number of SRB bacteria will multiply in the medium, and a large amount of sulfur will be produced during the reproduction process of SRB bacteria Hydrogen and hydrogen sulfide increase the corrosion of the medium on the one hand, and at the same time, hydr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F5/12C10G75/02
Inventor 王香增杜素珍刘立郭学辉张永强
Owner XI'AN PETROLEUM UNIVERSITY
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