Mitigating microbiologically influenced corrosion of an oilfield biofilm consortium on carbon steel in enriched hydrotest fluid using 2,2-dibromo-3-nitrilopropionamide（DBNPA） enhanced by a 14-mer peptide
来源期刊：JOURNAL OF MATERIALS SCIENCE TECHNOLOG2020年第22期
论文作者：Di Wang Mahmoud Ramadan Tingyue Gu
摘 要：In the oil and gas industry,microbiologically influenced corrosion（MIC） is a major threat to hydrotest,a procedure which is required to certify whether a pipeline can be commissioned.Seawater is frequently used as a hydrotest fluid.In this bio film prevention lab study,an oilfield biofilm consortium was grown in an enriched artificial seawater anaerobically at 37℃ for 60 days.The combination of 100 ppm（w/w） 2,2-dibromo-3-nitrilopropionamide（DBNPA）+100 nM（180 ppb） Peptide A（a biofilm dispersal agent） led to extra SRB（sulfate reducing bacteria）,APB（acid producing bacteria） and GHB（general heterotrophic bacteria） sessile cell count reductions of 0.9-log,0.8-log and 0.6-log,respectively,compared with the outcome obtained by using 100 ppm DBNPA only.The Peptide Aenhancement also led to extra reductions of 44 % in weight loss,43 % in maximum pit depth,and 54 % in corrosion current density.
Di Wang1，Mahmoud Ramadan1，Tingyue Gu1
1. Department of Chemical & Biomolecular Engineering, Institute for Corrosion and Multiphase Technology, Ohio University
摘 要：In the oil and gas industry,microbiologically influenced corrosion（MIC） is a major threat to hydrotest,a procedure which is required to certify whether a pipeline can be commissioned.Seawater is frequently used as a hydrotest fluid.In this bio film prevention lab study,an oilfield biofilm consortium was grown in an enriched artificial seawater anaerobically at 37℃ for 60 days.The combination of 100 ppm（w/w） 2,2-dibromo-3-nitrilopropionamide（DBNPA）+100 nM（180 ppb） Peptide A（a biofilm dispersal agent） led to extra SRB（sulfate reducing bacteria）,APB（acid producing bacteria） and GHB（general heterotrophic bacteria） sessile cell count reductions of 0.9-log,0.8-log and 0.6-log,respectively,compared with the outcome obtained by using 100 ppm DBNPA only.The Peptide Aenhancement also led to extra reductions of 44 % in weight loss,43 % in maximum pit depth,and 54 % in corrosion current density.
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