A method for installing a subsea structure at a target installation site in an underwater location is disclosed. The method includes connecting at least one mooring line and at least one leading line to the structure, and towing the structure via the leading line from a deployment position to the target installation site, such that the structure moves both vertically and horizontally between the deployment position and the target installation site. The mooring line is anchored, e.g. to an anchoring device on the seabed, and can incorporate a ballast to apply a sinking force to the structure in proportion to the length of unsupported line. The mooring line and the leading line can together stabilise the structure as it descends to the installation site. The non-vertical installation allows accurate structure placement, e.g. in crowded fields, with less sensitivity to tidal or current forces.


    Access

    Download


    Export, share and cite



    Title :

    Method for Installing a Subsea Structure


    Contributors:

    Publication date :

    2020-09-24


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B63B Schiffe oder sonstige Wasserfahrzeuge , SHIPS OR OTHER WATERBORNE VESSELS / B65D Behältnisse zur Lagerung oder zum Transport von Gegenständen oder Materialien [Container], z.B. Säcke, Beutel, Fässer, Flaschen, Dosen, Kästen, Büchsen, Schachteln, Packkörbe, Tonnen, Gläser, Flüssigkeitsbehälter, Trichtersilos, Transportbehälter , CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS / E02B HYDRAULIC ENGINEERING , Wasserbau / E02D FOUNDATIONS , Gründungen / F17C Behälter zum Aufnehmen oder Speichern verdichteter, verflüssigter oder verfestigter Gase , VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES



    METHOD FOR INSTALLING A SUBSEA STRUCTURE

    BOWIE MALCOLM | European Patent Office | 2021

    Free access

    METHOD FOR INSTALLING A SUBSEA STRUCTURE

    BOWIE MALCOLM | European Patent Office | 2017

    Free access

    Subsea foundation and method of installing

    ELLINGSEN KJELL EINAR / STANGELAND JONE | European Patent Office | 2022

    Free access

    SUBSEA FOUNDATION AND METHOD OF INSTALLING

    ELLINGSEN KJELL EINAR / STANGELAND JONE | European Patent Office | 2023

    Free access

    METHOD FOR INSTALLING A SUBSEA CABLE

    BERQUE JOANNES / RICO RUBIO ANTONIO / SELLNER JAN et al. | European Patent Office | 2020

    Free access