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  

作　　者：Di Wang Mahmoud Ramadan Sith Kum seranee Suchada Punpruk Tingyue Gu 

机构地区：[1]Department of Chemical&Biomolecular Engineering,Institute for Corrosion and Multiphase Technology,Ohio University,Athens 45701,USA [2]PTT Exploration and Production,Bangkok 10900,Thailand

出　　处：《Journal of Materials Science & Technology》2020年第22期146-152,共7页材料科学技术（英文版）

基　　金：financially supported by PTT Exploration and Production, Thailand;Chinese Society for Corrosion and Protection。

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.

关 键 词：Hydrotest Microbiologically influenced corrosion Anti-biofilm peptide Biocide enhancer 2 2-dibromo-3-nitrilopropionamide(DBNPA) 

分 类 号：TG172.7[金属学及工艺—金属表面处理]