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    Corrosion of carbon steel in the presence of oilfield deposit and thiosulphate-reducing bacteria in CO2 environment

    Access Status
    Fulltext not available
    Authors
    Machuca Suarez, Laura
    Lepkova, Katerina
    Petroski, A.
    Date
    2017
    Type
    Journal Article
    
    Metadata
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    Citation
    Machuca Suarez, L. and Lepkova, K. and Petroski, A. 2017. Corrosion of carbon steel in the presence of oilfield deposit and thiosulphate-reducing bacteria in CO2 environment. Corrosion Science. 129: pp. 16-25.
    Source Title
    Corrosion Science
    DOI
    10.1016/j.corsci.2017.09.011
    ISSN
    0010-938X
    School
    Department of Chemical Engineering
    URI
    http://hdl.handle.net/20.500.11937/60932
    Collection
    • Curtin Research Publications
    Abstract

    The effect of thiosulphate reducing bacteria (TRB) on the corrosion of carbon steel covered by a complex oilfield deposit has been assessed in CO 2 -containing seawater at 55 °C. TRB were found to significantly accelerate localized corrosion at deposited steels. This effect of TRB on under-deposit corrosion (UDC) was related to metabolic production of corrosive compounds, such as sulphide and acidic species, through biodegradation of organic matter and thiosulphate reduction in the deposit. TRB were also found to promote accumulation of hydrocarbons and metals in the deposit. Results highlight that microbial-deposit interactions are a noteworthy process in corrosion of oilfield facilities.

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