Long-Term Biocide Efficacy and Its Effect on a Souring Microbial Community.

ABSTRACT: Reservoir souring, which is the production of H₂S mainly by sulfate-reducing microorganisms (SRM) in oil reservoirs, has been a long-standing issue for the oil industry. While biocides have been frequently applied to control biogenic souring, the effects of biocide treatment are usually temporary, and biocides eventually fail. The reasons for biocide failure and the long-term response of the microbial community remain poorly understood. In this study, one-time biocide treatments with glutaraldehyde (GA) and an aldehyde-releasing biocide (ARB) at low (100 ppm) and high (750 ppm) doses were individually applied to a complex SRM community, followed by 1 year of monitoring of the chemical responses and the microbial community succession. The chemical results showed that souring cont

SUBMITTER: Shi X 

PROVIDER: S-EPMC8357289 | biostudies-literature | 2021 Aug

REPOSITORIES: biostudies-literature