A method of installing a steel catenary riser comprises progressively unspooling and launching the riser from a reel-lay vessel. The riser is plastically deformed in a straightening process aboard the vessel downstream of unspooling and upstream of launching the riser. The straightening process is adjusted to form a series of two or more residual curvature loops of locally increased curvature in a length of the riser suspended in the water column above a touch-down point. Successive loops of the series are separated and joined by a straighter portion of the riser of lesser curvature than those loops. Buoyancy elements are attached to at least one straighter portion of the riser above at least one of the loops of the series, or between successive loops of the series, or above the series of loops.


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    Titel :

    IMPROVING FATIGUE RESISTANCE OF STEEL CATENARY RISERS



    Erscheinungsdatum :

    07.11.2024


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

    IPC:    E21B EARTH OR ROCK DRILLING , Erd- oder Gesteinsbohren / B63B Schiffe oder sonstige Wasserfahrzeuge , SHIPS OR OTHER WATERBORNE VESSELS / F16L PIPES , Rohre



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    IMPROVING FATIGUE RESISTANCE OF STEEL CATENARY RISERS

    ASGARI PEYMAN / DE MORAES TAKAFUJI FERNANDA CRISTINA / RAMIRO AMORIM ANDRE et al. | Europäisches Patentamt | 2025

    Freier Zugriff

    IMPROVING FATIGUE RESISTANCE OF STEEL CATENARY RISERS

    ASGARI PEYMAN / DE MORAES TAKAFUJI FERNANDA CRISTINA / RAMIRO AMORIM ANDRE et al. | Europäisches Patentamt | 2023

    Freier Zugriff