Contract let for Kaombo hybrid risers

Heerema Marine Contractors (HMC) has let a contract to 2H Offshore, an Acteon company, to engineer hybrid risers for Total SA’s Kaombo Block 32 project offshore Angola.

Total previously let a $3.5-billion contract to HMC and consortium partner Technip SA for the engineering, procurement, construction, installation, and precommissioning of subsea umbilicals, risers, and flowlines for the Kaombo development (OGJ Online, Apr. 16, 2014).

2H will perform part of the detailed engineering of the development’s 18 single top tensioner risers. 2H also will work with HMC as part of an integrated design team, with 2H responsible for engineering of the buoyancy tank, upper riser assembly, and lower riser assembly packages together with global analysis and systems engineering of the risers.

Development of Kaombo, which lies in 1,425-1,925 m of water, will include the Gindungo, Gengibre, Canela, Louro, Mostarda west, and Caril fields tied back to two turret-moored floating, production, storage, and offloading vessels converted from very large crude carriers by Sembawang Shipyard (OGJ Online, July 21, 2014).

The selected concept consists of several production loops with one insulated production riser and one noninsulated service riser per field. Water injection risers will also be required, 2H says.

The project is in the detailed engineering stage, with 2H also contracted to support HMC through the procurement, fabrication, and installation phases.

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