The offshore pipeline industry is planning new gas trunklines at water depth ever reached before (up to 3500 m). In such conditions, external hydrostatic pressure becomes the dominating loading condition for the pipeline design. Pipe geometric imperfections as the cross section ovality, combined load effects as axial and bending loads superimposed to the external pressure, material properties as compressive yield strength in the circumferential direction and across the wall thickness etc., significantly interfere in the definition of the demanding, in such projects, minimum wall thickness requirements. The scope of this paper is to introduce fabrication and material issues, as well as geometric tolerance, in relation to ultra deep water pipeline design.


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    Title :

    Design criteria vs. line pipe requirements for offshore pipelines


    Additional title:

    Entwurfskriterien im Vergleich mit den Anforderungen an die Rohre für Offshore-Rohrleitungen


    Contributors:


    Publication date :

    2005


    Size :

    18 Seiten, 11 Bilder, 36 Quellen


    Type of media :

    Conference paper


    Type of material :

    Storage medium


    Language :

    English




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