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
CN105076201BActive Publication Date: 2017-07-07ZHENGZHOU UNIVERSITY OF LIGHT INDUSTRY
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Patents(China)
Current Assignee / Owner
ZHENGZHOU UNIVERSITY OF LIGHT INDUSTRY
Publication Date
2017-07-07

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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.
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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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