Patents Assigned to Subsea 7 (COM) Inc.
  • Hybrid riser towers and fabrication thereof
    Patent number: 8256993
    Abstract: Disclosed is a riser tower structure including a plurality of elongate objects. The riser tower structure is provided with blocks, preferably of buoyant material, along at least part of its length. The blocks provide the riser tower with a substantially circular cross-sectional profile, wherein one or more strakes are provided on the outside of the blocks. The strakes in a main embodiment are helical. Also disclosed is a corresponding method of constructing such a riser tower structure.
    Type: Grant
    Filed: November 11, 2009
    Date of Patent: September 4, 2012
    Assignee: Subsea 7 (COM) Inc.
    Inventors: Jean-Pierre Branchut, Michael Middel