A kind of biofouling cleaning agent and its application

A cleaning agent and biofouling technology, applied in complex/solubilizer treatment, surface active non-soap compound and cleaning composition, detergent composition, etc., can solve the problem of aggravating pipeline oxidation and corrosion, and achieve excellent corrosion and mitigation Corrosion effect, improve oil field safety production, excellent descaling effect

Active Publication Date: 2018-10-16
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The biofouling cleaning agent provided by the prior art either produces a large amount of toxic hydrogen sulfide gas; or intensifies the oxidation corrosion of pipelines while controlling and reducing the production of hydrogen sulfide

Method used

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  • A kind of biofouling cleaning agent and its application
  • A kind of biofouling cleaning agent and its application

Examples

Experimental program
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Effect test

preparation example Construction

[0029] Specifically, the preparation method of the above biofouling cleaning agent includes: according to the mass percentage of each component in the biofouling cleaning agent, hydrochloric acid, hydrofluoric acid, a compound of methylpentynol and Mannich base, three Ferric chloride, 2-iodobenzoic acid, heptadecenyl imidazoline quaternary ammonium salt, and phosphonoglycolic acid are slowly added into water, and after stirring evenly, a biofouling cleaning agent is obtained.

[0030] On the other hand, an embodiment of the present invention provides an application of the above-mentioned biofouling cleaning agent in treating biofouling in an oil field water injection pipe network.

[0031] Specifically, the steps of using the biofouling cleaning agent provided by the embodiments of the present invention to treat the oilfield water injection pipeline network include:

[0032]101. According to the pipe diameter, length, and fouling degree, determine the concentration and dosage ...

Embodiment 1

[0042] This embodiment provides a biofouling cleaning agent, comprising the following components in mass percentage: 4% hydrochloric acid, 0.6% hydrofluoric acid, 1% compound of methylpentynol and Mannich base, trichlorohydrin 2.5% iron oxide, 1% 2-iodobenzoic acid, 0.6% heptadecenyl imidazoline quaternary ammonium salt, 0.5% phosphonoglycolic acid, and the balance is water. Wherein, in the compound of methylpentynol and Mannich base, the mass ratio of methylpentynol to Mannich base is 1:9.

Embodiment 2

[0044] This embodiment provides a biofouling cleaning agent, comprising the following ingredients in mass percentage: 6% hydrochloric acid, 0.5% hydrofluoric acid, 1% compound of methylpentynol and Mannich base, trichloro 2.8% iron oxide, 0.8% 2-iodobenzoic acid, 0.5% heptadecenyl imidazoline quaternary ammonium salt, 0.4% phosphonoglycolic acid, and the balance is water. Wherein, in the compound of methylpentynol and Mannich base, the mass ratio of methylpentynol to Mannich base is 1:9.

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Abstract

The invention discloses a biofouling cleanser and an application thereof and belongs to the field of chemical descaling. The biofouling cleanser includes the following components, by mass, 4-8% of hydrochloric acid, 0.5-1% of hydrofluoric acid, 0.8-1.2% of a compound of methyl pentynol and Mannich base, 2.5-3.5% of ferric chloride, 0.8-1.2% of 2-iodacyl benzoic acid, 0.5-1.2% of heptadecenyl imidazoline quaternary ammonium salt, 0.3-0.6% of hydroxyphosphonoacetic acid, and the balanced being water. The biofouling cleanser has excellent descaling effects and controls the overflow concentration of H2S to be less than 0.2 mg / m<3> without aggravation on oxidizing corrosion and generation of heavy metal pollution. The biofouling cleanser is safe and environment-friendly and is beneficial to safety production in oil fields.

Description

technical field [0001] The invention relates to the field of chemical descaling, in particular to a biological fouling cleaning agent and application thereof. Background technique [0002] Biofouling generally refers to the biomass formed by microorganisms and their excrement and a small amount of other impurities at the solid-liquid interface in the water system. It often exists on the surface of various equipment used in industrial circulating cooling water systems, drinking water systems and seawater systems. . Especially the biofouling existing in the oilfield water injection pipe network, because a large number of sulfate-reducing bacteria adhere to the pipe wall, the sulfate ions in the water are reduced to sulfur ions, and lead to electrochemical corrosion, and the iron ions and Iron ions combine with sulfur ions to produce biofouling containing sulfides such as ferrous sulfide and ferric disulfide. Moreover, saprophytic bacteria react with organic matter in water t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C11D10/02C02F5/14C02F5/08
CPCC23F14/02
Inventor 马志谢刚姜伟祺杜清珍魏丽丽商芳曹瑞民
Owner PETROCHINA CO LTD
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