The fatigue design of pipelines or risers in deepwater oil and gas developments, is often critically dependent on quantifying the extent to which aggressive service environments affect performance. Girth welds in these structures are often exposed to seawater on the external surface, and sweet or sour production fluids on the internal surface. All of these environments can lead to higher rates of fatigue crack growth and lower overall life compared to performance in air. The seawater environment has been studied in some depth, and design codes provide advice on how steel structures are likely to behave under conditions of either free corrosion or cathodic protection. However, it is important to note that there are limits to how widely these guidelines can be applied, and for more complex environments, such as production fluids which are inevitably project specific, design guidance is rarely available. Laboratory testing provides a means of quantifying material behaviour in a simulated service environment, and allows the impact of various environmental variables to be explored. This is important as parameters such as temperature, H 2S concentration or loading frequency can have a significant effect on the extent to which performance is affected. This paper provides a review of published information and recent research data, and highlights particular areas where existing data are limited and design challenges remain.


    Access

    Access via TIB

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Corrosion fatigue behaviour of welded risers and pipelines


    Additional title:

    Korrosionsermüdungsverhalten von geschweißten Steigleitungen und Pipelines


    Contributors:


    Publication date :

    2007


    Size :

    8 Seiten, 24 Quellen



    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English





    SmartPipe - Self diagnostic pipelines and risers

    Knudsen, Ole Oystein / Ostby, Erling / Giertsen, Egil et al. | Tema Archive | 2007


    Fatigue analysis of risers

    Bolanos, R.B. / Rivera, J.E. / Campos, D. | Tema Archive | 2002


    Deepwater Installation of Pipelines and Risers by Towing

    da Cruz, I.C.P. / Davidson, J.D. | British Library Conference Proceedings | 2006


    Past, Present, and Future Towing of Pipelines and Risers

    Brown, R.J. | British Library Conference Proceedings | 2006