Special bactericide corrosion inhibitor for oil field

A corrosion inhibitor and oilfield technology, which is applied in the field of bactericidal corrosion inhibition and oilfield special bactericidal corrosion inhibitor, can solve the problems of poor compatibility between zinc salt and quaternary ammonium salt and impracticability for practical application, etc., and achieve good corrosion inhibition effect, Reduce the effect of dosing equipment and dosing links, product stability

Active Publication Date: 2015-03-11
天津开广工业水处理有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the poor compatibility of zinc salts and quaternary ammonium salts, it cannot be used in practical applications

Method used

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  • Special bactericide corrosion inhibitor for oil field

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Experimental program
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preparation example Construction

[0032] The preparation method of this embodiment is very simple, and the finished product of the bactericidal corrosion inhibitor can be obtained by mixing the four materials according to the weight ratio.

[0033] The working mechanism of the present invention is

[0034] The invention belongs to the adsorption and penetration type bactericide, which can destroy the semipermeable membrane tissue of the bacterial cell wall, destroy the coenzymes and metabolites of the cells, make the protein deteriorate and cause cell death. The bactericide is adsorbed on the surface of bacteria and affects the normal metabolism of bacteria to play a bactericidal effect. It usually has the greatest bactericidal effect under alkaline conditions, and has a significant killing effect on anaerobic bacteria, iron bacteria and sulfate-reducing bacteria.

[0035] The corrosion inhibitor components in the present invention can be quickly hydrolyzed into activated ions in water, and preferentially part...

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Abstract

The invention relates to a special bactericide corrosion inhibitor for an oil field. The special bactericide corrosion inhibitor comprises the following components in percentage by weight: 10-20 percent of zinc salt, 60-75 percent of quaternary ammonium salt, 5-10 percent of sulfamic acid and 5 percent of alcohols, wherein the summation of the percentages of the zinc salt, the quaternary ammonium salt, the sulfamic acid and the alcohols is between 90 and 95 percent, and the balance is replenished by adding water to 100 percent. According to the special bactericide corrosion inhibitor disclosed by the invention, the zinc salt and the quaternary ammonium salt are used as main agents, and the problem that the zinc salt is compatible with the quaternary ammonium salt is solved; proved by the experimental detection, the formula is good in compatibility, products are stable, the inhibiting effect for sulfate reducing bacteria is good, and a good corrosion inhibiting effect for oil-field water by taking sulfide and carbon diode as main corrosion components is realized; the special bactericide corrosion inhibitor is special for corrosion and bactericide of reinjection water, mixed infusion water and oil well produced water for the oil field.

Description

technical field [0001] The invention belongs to the field of oil fields, and relates to sterilization and corrosion inhibition of reinjection water, mixed water delivery and oil well water, in particular to a special sterilization and corrosion inhibitor for oil fields. Background technique [0002] Corrosion inhibitors and bactericides in oilfield water have always been separated and have no correlation, while corrosion and sulfuric acid reducing bacteria in oilfields are almost all associated, and they promote each other to aggravate corrosion, especially corrosion inhibitors in oil well corrosion control And fungicides can not be used at the same time, so the current single use of corrosion inhibitors or fungicides to control the corrosion of oil wells, the effect is not good. Zinc salts are good corrosion inhibitors, and quaternary ammonium salts are good fungicides. Because the compatibility of zinc salt and quaternary ammonium salt is not good, so can't carry out prac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F5/08C02F5/10C02F5/12C02F103/10
CPCC02F5/08C02F5/10C02F5/12C02F2101/10C02F2101/101C02F2103/10C02F2303/08
Inventor 张勃王华郭军曾凤祥刘旺诚
Owner 天津开广工业水处理有限公司
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