A mature field located in UK sector of the North Sea, comprises one central platform with several subsea satellite tie-backs fabricated from carbon steel. Internal corrosion mitigation of these flowlines was based on the application of a combined scale/corrosion inhibitor. Following corrosion failures at the inlet sections (towhead) of the flowlines, the requirement for an effective inhibitor increased. Subsequent inspection of the towhead pipework revealed significant preferential weld corrosion. There had been improvements in inhibitor injection compliance; however, the selection of the incumbent inhibitor was based on limited performance test work. An appraisal of the chemical injection system and a corrosion risk assessment of the flowlines highlighted short falls in the required corrosion management process. Rectifying the integrity issues involved significant economic, operational and technological challenges that had to be overcome to achieve continued integrity of the flowlines. Hardware upgrades


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    Corrosion inhibition challenges in a mature subsea production facility


    Contributors:
    Lasebikan, B.A. (author) / McKay, S.F. (author) / Mok, W.Y. (author) / Collins, J.A. (author) / Leontieff, A. (author) / Duncan, G.S. (author)


    Publication date :

    2009


    Size :

    42 Seiten, 22 Quellen


    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    The Benefits of Subsea Separation on Mature Fields

    Abrand, S. / Bonnissel, M. / Anres, S. et al. | British Library Conference Proceedings | 2007


    Subsea Production Systems : Prevention of corrosion problems ; Proceedings

    Trøndelag Korrosjonstekniske Forening | TIBKAT | 1988


    Internal corrosion monitoring of subsea oil and gas production equipment

    Joosten, M.W. / Fischer, K.P. / Strommen, R. et al. | Tema Archive | 1995


    Subsea installation comprising corrosion-resistant flowlines

    European Patent Office | 2019

    Free access