Oil field microorganisms cause highly localized corrosion on chemically inhibited carbon steel.

ABSTRACT: Carbon steel pipelines, a means for crude oil transportation, occasionally experience highly localized perforation caused by microorganisms. While microorganisms grown in laboratory culture tend to corrode steel specimens unevenly, they rarely inflict a corrosion morphology consistent with that of pipelines, where centimetre-sized corrosion features are randomly distributed within vast stretches of otherwise pristine metal surface. In this study, we observed that corrosion inhibitors (CIs), widely used for the control of acid gas (H₂ S, CO₂ ) corrosion in oil fields, also affect microbial growth and activity. Inhibited carbon steel resisted biofilm formation and underwent negligible corrosion (< 0.002 mm Fe⁰ year^-1 ), despite 15 months of exposur

SUBMITTER: Mand J 

PROVIDER: S-EPMC7888452 | biostudies-literature | 2021 Jan

REPOSITORIES: biostudies-literature