The offshore industry is confronted with more complex ultra-deepwater developments, and water depths extending to 10,000 feet. Deployment of trees and wellheads, as well as other subsea equipment has evolved from deployments using the winch on the MODU's rig (Mobile Offshore Drilling Unit), to stand-alone deployments from service vessels. A number of subsea equipment deployment techniques have developed in order to reduce costs associated with expensive 5th generation drilling vessels. The methodology used and the results obtained for subsea equipment deployment and installation in the Gulf of Mexico at water depths up to 8,000 ft are presented. The performance of the numerical tools is compared with offshore observations. Both offshore measurements and wave tank data are emphasized in order to validate the numerical model. Two possible contributors to more benign offshore response compared with calculations are: (1) complex subsea package hydrodynamics, and (2) wire rope damping effects. Indications are that internal damping in the very long, and relatively complex, wire ropes used offshore, is a source of significant damping. This damping is helpful in mitigating resonance effects.


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    Titel :

    Deployment of subsea equipment in ultradeep water


    Weitere Titelangaben:

    Einsatz von Unterwasserausrüstungen in ultratiefem Wasser


    Beteiligte:
    Morrison, D. (Autor:in) / Cermelli, C. (Autor:in)


    Erscheinungsdatum :

    2003


    Format / Umfang :

    9 Seiten, 10 Bilder, 8 Quellen



    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




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