The present invention addresses to a method of clearing submarine pipes, in which the method solves the most complex cases of obstruction of flexible submarine pipes, where the conventional approach is ineffective. Additionally, the present invention represents a cheaper alternative to the clearance of pipes in scenarios where the conventional approach is applicable. The method of clearing flexible pipes using flexitube from a well intervention rig of the present invention comprises as one of its main steps: with the aid of a remotely operated vehicle (51), opening a flanged connection (10) between two flanges (15) of the legs (12 and 14) of a submarine pipe (40) and installing a pull head (16 and 17) in each of these legs (12 and 14); and using well intervention rig (120) operations; assembling the hoisting assembly (58) for hoisting the leg (14) of the submarine pipe (40) with the drill string (50); hoisting the leg (14) of the submarine pipe (40) through its end using the hoisting assembly (58) coupled to the pull head (16); draining the internal pressure of the pipe by means of the connection of a tube (67) with the pull head (16); assembling the Surface Flow Tree (70) at the end of the leg (14) of the submarine pipe (40), using the connection adaptation parts (90) and (91) to make the end of the leg compatible with the Surface Flow Tree; assembling the Flexitube (80) on the Surface Flow Tree (70) and surface lines (72); carrying out the operation of clearing the leg (14) of the submarine pipe (40) with Flexitube (80).


    Zugriff

    Download


    Exportieren, teilen und zitieren



    Titel :

    METHOD FOR CLEARING FLEXIBLE LINES USING COILED TUBING FROM A WELL INTERVENTION RIG



    Erscheinungsdatum :

    2023-11-02


    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



    COILED TUBING

    SAE Technical Papers | 1960


    COILED TUBING TRAILER

    LU MIKE XIAOLEI / WELK JOSEPH | Europäisches Patentamt | 2022

    Freier Zugriff

    Coiled tubing and vessel motions for riserless coiled tubing systems

    Hoen, Christopher / Haheim, Svein A. | Tema Archiv | 2004


    Coiled tubing trailer

    LU MIKE XIAOLEI / WELK JOSEPH | Europäisches Patentamt | 2023

    Freier Zugriff

    Coiled tubing reel trailer

    GAILLARD PHILIPPE HERVE / TOAL TERENCE PATRICK | Europäisches Patentamt | 2023

    Freier Zugriff