Enzymes for controlling microbiologically influenced corrosion
AssigneeLANXESS Corporation
InventorsHuiqing Zheng, Henry Ophardt, Angela Iglesias, Nora Eibergen
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Abstract
Disclosed herein are methods and compositions for controlling microbiologically influenced corrosion (MIC) through the use of certain enzymes. The methods and compositions are useful for applications susceptible to or in need of treatment or remediation for MIC associated with biofilms formed on metal surfaces under anaerobic conditions, such as in equipment or structures within oil and gas systems, particularly the production, transportation and storage infrastructure and equipment for oil and gas applications.
Claims20
A method of controlling microbiologically influenced corrosion of a site of interest, comprising contacting a biofilm formed under anaerobic conditions on a metal surface of the site of interest with an effective amount of an enzyme selected from the group consisting of a protease, a carbohydrolase, a DNase and a combination thereof.
A composition for controlling microbiologically influenced corrosion (MIC) in an anaerobic environment, comprising an enzyme selected from the group consisting of a protease, a carbohydrolase, a DNase and a combination thereof in an effective amount to control the MIC, wherein the effective amount is from about 1 ppm to about 500 ppm.
Dependencies are inferred from the claim text.