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
CN105076201AActive Publication Date: 2015-11-25ZHENGZHOU UNIVERSITY OF LIGHT INDUSTRY
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
ZHENGZHOU UNIVERSITY OF LIGHT INDUSTRY
Publication Date
2015-11-25

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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.
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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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