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    CSOL completes fast track projects in North Sea

    News // October 11, 2002
    Coflexip Stena Offshore Limited has completed two fast-track contracts for Kerr McGee to project manage and execute the subsea construction activities for the development of the Maclure field and the Gryphon/Beryl/Leadon gas pipeline system, located in the Northern North Sea.

    The contracts, awarded as a combined package, have enabled Kerr McGee to capitalise on the time and cost efficiencies generated through the use of CSOL's extensive resource base and integratedcapabilities as a total subsea solutions provider.

    The contracts included a 2.3km single well tie-back between the Maclure wellhead and the Gryphon FPSO (Floating, Production and Offloading Storage Unit) riser base, and a 21km 16" gas export pipeline between the Gryphon Subsea Isolation Valve and the Beryl Alpha Riser Access Tower (RAT).

    This gas pipeline was then extended to the Leadon FPSO by a 7.5 km gas import flowline from the Beryl SSIV (Subsea Isolation Valve). CSOL also undertook the project management, engineering, manufacture, installation, testing and pre-commissioning foreach of these projects.

    CSOL was also responsible for the supply and installation of two dynamic flexible risers and a dynamic umbilical riser from the Gryphon riser base to the Gryphon FPSO.

    Fabrication of the flexible and rigid pipelines took place at Technip-Coflexip's Le Trait facility in France and Evanton spoolbase in Scotland respectively. Subsea construction and installation was undertaken from April to May 2002, by the CSO Apache and CSO Constructor, with trenching support provided by the Normand Pioneer. Additional divingsupport and construction requirements were provided by the Diving Support Vessel (DSV), the CSO Orelia.

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