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Complex oilfield water flooding bactericide

A technology of oilfield water injection and bactericide, which is applied in the direction of biocide, bactericide/microdynamic water/sewage treatment, disinfectant, etc. It can solve problems such as blocked pipelines, corrosion of metal materials such as water injection pipelines, and impact on oil production, so as to avoid Corrosion and clogging, easy preparation, and low cost of use

Active Publication Date: 2015-11-25
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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  • Complex oilfield water flooding bactericide
  • Complex oilfield water flooding bactericide
  • Complex oilfield water flooding bactericide

Examples

Experimental program
Comparison scheme
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] Sugar Gemini Quaternary Ammonium Salt 35kg

[0023] Alkyl glucoside 3kg

[0024] Tetrahydroxymethylphosphonium bromide 10kg

[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 added...

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] Sugar Gemini Quaternary Ammonium Salt 26kg

[0032] Alkyl glucoside 5kg

[0033] Tetrahydroxymethylphosphonium bromide 14kg

[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] Sugar Gemini Quaternary Ammonium Salt 30kg

[0040] Alkyl glucoside 2kg

[0041] Tetrahydroxymethylphosphonium bromide 13kg

[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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Abstract

The present invention discloses a complex oilfield water flooding bactericide. The complex oilfield water flooding bactericide is prepared from the following raw materials by weight: 25-35 parts of saccharide gemini quaternary ammonium salt, 2-5 parts of alkyl glucoside, 10-15 parts of quaternary phosphonium salt, 4-10 parts of isothiazolinone, and 5-10 parts of dithiocyano-methane. The bactericide has strong bactericidal effect, can effectively remove the sulfate-reducing bacteria, iron bacteria and saprophytes in water, and avoid corrosion and clogging of pipelines and equipment caused by bacteria, and has the advantages of simple ingredients, easy preparation, fastness, efficiency, low cost, high sterilization rate, low usage and little side effects.

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