The role of mini tension leg platforms (TLP) in oil exploration and production in marginal deepwater fields is becoming increasingly important. SeaStar is a mini TLP that combines the simplicity of a spar and favourable response features of a TLP. In this paper, the results of a detailed numerical investigation of the coupled dynamic behaviour of SeaStar are reported with special attention to platform-tether coupling. The numerical study has been carried out using a finite element computer code developed for the nonlinear dynamic analysis of compliant offshore platforms in the time domain using Morison type wave loading. A typical SeaStar platform has been considered at two water depths, 215 m and 1000 m. Experimental investigation was conducted for a scaled model corresponding to 215 m water depth for validation of the numerical model. The model-prototype correlation studies have been conducted using the numerical model. Response amplitude operators of motion and tether tension are presented for the two typical water depths and conclusions drawn.


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    Title :

    Coupled dynamics of SeaStar mini tension leg platform


    Contributors:

    Published in:

    Ocean Engineering ; 30 , 6 ; 709-737


    Publication date :

    2003


    Size :

    29 Seiten, 38 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




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