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Special foam-free composite bactericide for shale gas well pipeline, and preparation method thereof

A compound fungicide, shale gas well technology, applied in the fields of botanical equipment and methods, biocides, chemical instruments and methods, etc., can solve the problems of secondary pollution microorganisms, low effective concentration, weak irritation, etc., and achieve antibacterial spectrum. Wide range of effects, low tissue toxicity, and enhanced adaptability

Active Publication Date: 2020-11-17
四川长宁天然气开发有限责任公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to provide a special non-foaming compound fungicide for shale gas well pipeline and its preparation method, to solve the quaternary ammonium salt fungicide in the prior art, which has low effective concentration, large amount of foam, and certain defects. Corrosion, toxicity and weak irritation use defects, and technical problems that may cause secondary pollution to the environment and cause microbial resistance due to long-term large-scale use

Method used

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  • Special foam-free composite bactericide for shale gas well pipeline, and preparation method thereof
  • Special foam-free composite bactericide for shale gas well pipeline, and preparation method thereof
  • Special foam-free composite bactericide for shale gas well pipeline, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] (1) Add the solvent into the reaction vessel, then add the short-chain tertiary amine and hydrogen peroxide into the reaction vessel and stir evenly, keep stirring (the stirring speed is 80r / min) and raise the temperature to 50°C, and react at 50°C for 8h , to obtain short alkyl chain amine oxides;

[0045] (2) Continue to keep the state of stirring (stirring speed is 80r / min), add (according to the weight part of adding iodine element, add 1 weight part every 5 minutes) iodine element in the reaction vessel and keep the reaction temperature to be 30 ℃, until the elemental iodine is completely added to the reaction vessel and dispersed evenly;

[0046] (3) Continue to keep stirring (the stirring speed is 80r / min), add a pH regulator into the reaction vessel and keep the reaction temperature at 30°C for 1h;

[0047] (4) Continue to keep stirring (the stirring speed is 80r / min), add a stabilizer to the reaction vessel and keep the reaction temperature at 30°C for 8 hours...

Embodiment 2

[0050] (1) Add the solvent into the reaction vessel, then add the short-chain tertiary amine and hydrogen peroxide into the reaction vessel and stir evenly, keep stirring (the stirring speed is 90r / min) and raise the temperature to 80°C, and react at 80°C for 5h , to obtain short alkyl chain amine oxides;

[0051] (2) Continue to keep the state of stirring (stirring speed is 90r / min), add (by adding the weight part of iodine simple substance, add 1 weight part every 5 minutes) iodine simple substance in the reaction vessel and keep the reaction temperature to be 60 ℃, until the iodine element is completely added to the reaction vessel and uniformly dispersed, and adding the iodine element in stages is also to ensure the uniform dispersion of the iodine element;

[0052] (3) Continue to keep stirring (the stirring speed is 90r / min), add a pH regulator into the reaction vessel and keep the reaction temperature at 60°C for 0.5h;

[0053] (4) Continue to keep stirring (the stirri...

Embodiment 3

[0056] (1) Add the solvent into the reaction vessel, then add the short-chain tertiary amine and hydrogen peroxide into the reaction vessel and stir evenly, keep stirring (stirring speed is 100r / min) and raise the temperature to 100°C, and react at 100°C for 1h , to obtain short alkyl chain amine oxides;

[0057] (2) Continue to keep the state of stirring (stirring speed is 100r / min), add (according to the weight portion of adding iodine element, add 1 weight part every 5 minutes) iodine element in the reaction vessel and keep the reaction temperature to be 80 ℃, until the elemental iodine is completely added to the reaction vessel and dispersed evenly;

[0058] (3) Continue to keep stirring (the stirring speed is 100r / min), add a pH regulator into the reaction vessel and keep the reaction temperature at 80°C for 0.5h;

[0059] (4) Continue to keep stirring (the stirring speed is 100r / min), add a stabilizer to the reaction vessel and keep the reaction temperature at 80°C for ...

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Abstract

The invention provides a special foam-free composite bactericide for shale gas well pipelines, and a preparation method thereof, and solves the use defects of low effective concentration, large foam amount, certain corrosivity, toxicity and weak irritation of quaternary ammonium salt bactericides in the prior art, and the technical problems of secondary pollution to the environment and drug resistance of microorganisms due to long-term large-scale use. The composite bactericide is prepared from the following raw materials in parts by weight: 1-6 parts of iodine, 1-5 parts of a stabilizer, 18-40 parts of short-chain tertiary amine, 10-51 parts of a solvent, 16-51 parts of hydrogen peroxide, 1-5 parts of a pH regulator and 2-20 parts of a synergist. According to the invention, the special foam-free composite bactericide is used for sterilizing by using iodine, and is an efficient, rapid, broad-spectrum, high-bactericidal-power, low-toxicity and environment-friendly bactericide; and due to the non-foaming property of the stabilizer, the gas production rate of shale gas exploitation is not influenced.

Description

technical field [0001] The invention relates to a composite fungicide, in particular to a non-foaming composite fungicide specially used for shale gas well pipelines and a preparation method thereof. Background technique [0002] Corrosion and clogging of pipelines in the oil and gas field industry are mainly caused by microbial corrosion, and the application of bactericides is an important means to inhibit microbial corrosion of pipelines. There are two main types of fungicides commonly used in the prior art: oxidizing fungicides and non-oxidizing fungicides. Oxidizing fungicides are not ideal for on-site application due to their poor sterilization effect or increased corrosion. The fungicides used in domestic oil and gas field production injection systems are still mainly non-oxidizing fungicides, such as glutaraldehyde, isothiazolone and other non-ionic fungicides. Type fungicides, and cationic fungicides such as quaternary ammonium salts and phosphonium salts. Quaterna...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N59/12A01N59/00A01N55/10A01N25/22A01N25/08A01P1/00C09K8/54
CPCA01N25/08A01N25/22A01N55/00A01N59/00A01N59/12C09K8/54
Inventor 杨建英郭建春李俊中但霞路千里杨建文崭罗鑫青松铸李鹴
Owner 四川长宁天然气开发有限责任公司
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