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A compound oilfield water injection fungicide

An oilfield water injection and bactericide technology, which is applied in biocides, sterilization/microdynamic water/sewage treatment, disinfectants, etc., can solve the problems of corrosion of metal materials such as water injection pipelines, affecting oil production, blocking pipelines, etc. Convenience, low cost of use, avoidance of corrosion and clogging effects

Active Publication Date: 2017-07-07
ZHENGZHOU UNIVERSITY OF LIGHT INDUSTRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, in the process of growth, metabolism, and reproduction, these bacteria can cause severe corrosion of metal materials such as drilling equipment and water injection pipelines, and block pipelines, seriously affecting oil extraction.

Method used

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  • A compound oilfield water injection fungicide
  • A compound oilfield water injection fungicide

Examples

Experimental program
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Effect test

Embodiment 1

[0021] The composite oilfield water injection bactericide of this embodiment is composed of five components: glycosyl gemini quaternary ammonium salt, alkyl glycoside, quaternary phosphonium salt, isothiazolinone and dithiocyanomethane, and the specific ratio is as follows:

[0022] Glycosyl Gemini quaternary ammonium salt 35 kg

[0023] Alkyl glucoside 3kg

[0024] Tetrahydroxymethylphosphonium bromide 10 kg

[0025] Isothiazolinone 5kg

[0026] Dithiocyanomethane 8kg

[0027] In this embodiment, the glycosyl gemini quaternary ammonium salt is a glycosyl gemini quaternary ammonium salt whose carbon chain length is dodecyl; the alkyl chain of the alkyl glycoside is dodecyl.

[0028] The preparation method of the compound type oilfield water injection bactericide of this embodiment, the steps are as follows: glycosyl gemini quaternary ammonium salt, alkyl glycoside, quaternary phosphonium salt, isothiazolinone and dithiocyanomethane are weighed according to the formula, and ...

Embodiment 2

[0030] A compound oilfield water injection bactericide of this embodiment is composed of five components: glycosyl gemini quaternary ammonium salt, alkyl glycoside, quaternary phosphonium salt, isothiazolinone and dithiocyanomethane, and the specific ratio is as follows :

[0031] Glycosyl Gemini quaternary ammonium salt 26 kg

[0032] Alkyl glucoside 5kg

[0033] Tetrahydroxymethylphosphonium bromide 14 kg

[0034] Isothiazolinone 10kg

[0035] Dithiocyanomethane 5kg

[0036] In this embodiment, the glycosyl gemini quaternary ammonium salt is a glycosyl gemini quaternary ammonium salt whose carbon chain length is respectively decyl; the alkyl chain of the alkyl glycoside is decyl.

Embodiment 3

[0038] The composite oilfield water injection bactericide of this embodiment is composed of five components: glycosyl gemini quaternary ammonium salt, alkyl glycoside, quaternary phosphonium salt, isothiazolinone and dithiocyanomethane, and the specific ratio is as follows:

[0039] Glycosyl Gemini quaternary ammonium salt 30 kg

[0040] Alkyl glucoside 2kg

[0041] Tetrahydroxymethylphosphonium bromide 13 kg

[0042] Isothiazolinone 7kg

[0043] Dithiocyanomethane 8kg

[0044] In this embodiment, the glycosyl gemini quaternary ammonium salt is a glycosyl gemini quaternary ammonium salt whose carbon chain length is respectively tetradecyl; the alkyl chain of the alkyl glycoside is tetradecyl.

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PUM

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Abstract

The invention discloses a compound oilfield water injection bactericide, which is made of the following raw materials in parts by weight: 25-35 parts of sugar-based gemini quaternary ammonium salt, 2-5 parts of alkyl glycoside 10-15 parts of quaternary phosphonium salt, 4-10 parts of isothiazolinone, 5-10 parts of dithiocyanomethane. The invention has a strong bactericidal effect, can effectively remove sulfate-reducing bacteria, iron bacteria, and saprophytic bacteria in water injection, and avoid corrosion and blockage of pipeline equipment by bacteria, and has the advantages of simple components, convenient preparation, fast efficiency, and low cost , high sterilization rate, low usage, small side effects and other advantages.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and in particular relates to a compound oilfield water injection fungicide. Background technique [0002] Oilfields need to inject a large amount of water into the ground to achieve secondary oil recovery, and the water after the separation of the produced oil-water mixture needs to be injected back into the ground for secondary oil recovery. There are various microorganisms in the reinjection water, such as sulfate reducing bacteria (SRB), saprophytic bacteria (TGB) and iron bacteria, etc. Sulfate-reducing bacteria are anaerobic bacteria that can oxidize carbon-containing organic compounds or hydrogen, and reduce sulfate to produce H 2 S. Corrosion product FeS can block pipelines and water injection wells. Saprophytic bacteria, also known as slime-forming bacteria, are aerobic heterotrophic bacteria. They secrete a large amount of mucus that adheres to pipelines and equipment, causing...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N57/20A01P1/00C02F1/50C09K8/54C02F103/10A01N47/48A01N43/16A01N43/80
Inventor 杨许召王军庞龙邹文苑宋浩陈玉菲
Owner ZHENGZHOU UNIVERSITY OF LIGHT INDUSTRY
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