J. Mater. Sci. Technol. ›› 2020, Vol. 48: 72-83.DOI: 10.1016/j.jmst.2020.01.055

• Research Article • Previous Articles     Next Articles

Methanogenic archaea and sulfate reducing bacteria induce severe corrosion of steel pipelines after hydrostatic testing

Enze Zhoua,b, Jianjun Wangb,a, Masoumeh Moradia,b, Huabing Lia,*(), Dake Xua,b,**(), Yuntian Louc, Jinheng Luod, Lifeng Lid, Yulei Wange, Zhenguo Yangf, Fuhui Wanga,b, Jessica A. Smithg   

  1. a Shenyang National Laboratory for Materials Science, Northeastern University, Shenyang 110819, China
    b Key Laboratory for Anisotrotropy and Texture of Materials (Ministry of Education), School of Materials Science and Engineering, Northeastern University, Shenyang 110819, China
    c Corrosion and Protection Center, University of Science and Technology Beijing, Beijing 100083, China
    d CNPC Tubular Goods Research Institute, Xian 710065, China
    e CNPC Pipeline Construction Administration Department, Beijing 100101, China
    f Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
    g Department of Biomolecular Sciences, Central Connecticut State University, 1615 Stanley Street, New Britain, CT 06050, USA
  • Received:2019-12-06 Accepted:2020-01-31 Published:2020-07-01 Online:2020-07-13
  • Contact: Huabing Li,Dake Xu

Abstract:

Complex interactions within a microbial consortium can induce severe corrosion in oil pipelines. This study investigated the mechanism of microbiologically influenced corrosion (MIC) that led to failure of X52 steel pipelines after hydrostatic testing. Laboratory hydrostatic testing with untreated lake water and underground water were used to simulate and study the events that led to the actual corrosion. Biofilm analysis, weight loss, and several electrochemical measurements demonstrated rapid corrosion rates after hydrostatic testing. Analysis of microbial community structures revealed that methanogenic archaea and sulfate reducing bacteria (SRB), introduced by the hydrotest water, formed corrosive biofilms on X52 steel coupon surfaces that induced severe pitting.

Key words: Pipeline steel, Microbiologically influenced corrosion, Sulfate-reducing bacteria (SRB), Pitting corrosion