A semi-submersible floating structure (10) for the drilling and production of offshore oil and gas is provided. The semi-submersible floating structure includes a pontoon (15) having a plurality of pontoon sections, an outer edge, and an inner edge, the pontoon sections defining an interior space. The semi-submersible floating structure further includes a plurality of columns (11) extending vertically upward from the pontoon. Each column has an upper section (16) having an upper column width (23); and a lower section (12). The lower section has a bottom end coupled to the pontoon and aligned with the outer edge of the pontoon, the bottom end having a lower column width greater than the upper column width, at least part of the bottom end protruding into the interior space. The lower section further has a flared portion between the upper section and the bottom end; the flared portion having a width that varies from the upper column width at the upper section to the lower column width at the bottom end. A pontoon center-to-center distance between central axes of opposing sections of the pontoon is greater than a corresponding column center-to-center distance between central axes of opposing upper sections of the columns coupled to the opposing sections of the pontoon.


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    Title :

    Pontoon-type semi-submersible platform


    Contributors:
    WANG TAO (author) / JIANG XIAOFENG (author) / LU ROGER (author) / EIDE ROLF (author) / HANNUS HENRIK (author)

    Publication date :

    2021-10-07


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B63B Schiffe oder sonstige Wasserfahrzeuge , SHIPS OR OTHER WATERBORNE VESSELS



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