A method of installing a steel catenary riser comprises progressively unspooling and launching the riser into water 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 at least one residual curvature loop of locally increased curvature in a length of the riser that will be suspended in the water above a touch-down point in use. Ballast weights are then attached to the at least one loop. Buoyancy elements may be attached to the riser above the at least one loop.


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    Title :

    IMPROVING FATIGUE RESISTANCE OF STEEL CATENARY RISERS



    Publication date :

    2024-11-07


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

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



    IMPROVING FATIGUE RESISTANCE OF STEEL CATENARY RISERS

    ASGARI PEYMAN / DE MORAES TAKAFUJI FERNANDA CRISTINA / RAMIRO AMORIM ANDRE et al. | European Patent Office | 2024

    Free access

    IMPROVING FATIGUE RESISTANCE OF STEEL CATENARY RISERS

    ASGARI PEYMAN / DE MORAES TAKAFUJI FERNANDA CRISTINA / RAMIRO AMORIM ANDRE et al. | European Patent Office | 2025

    Free access

    IMPROVING FATIGUE RESISTANCE OF STEEL CATENARY RISERS

    ASGARI PEYMAN / DE MORAES TAKAFUJI FERNANDA CRISTINA / RAMIRO AMORIM ANDRE et al. | European Patent Office | 2023

    Free access

    IMPROVING FATIGUE RESISTANCE OF STEEL CATENARY RISERS

    ASGARI PEYMAN / DE MORAES TAKAFUJI FERNANDA CRISTINA / RAMIRO AMORIM ANDRE et al. | European Patent Office | 2025

    Free access

    IMPROVING FATIGUE RESISTANCE OF STEEL CATENARY RISERS

    ASGARI PEYMAN / DE MORAES TAKAFUJI FERNANDA CRISTINA / RAMIRO AMORIM ANDRE et al. | European Patent Office | 2023

    Free access