Flexible Risers and Umbilicals

Case Study

Neptune Deep Water Project North and South

Four Type II, diverless bend stiffeners are featured on two STL buoys used for the Neptune Deep Water Project North and South. The submerged turret loading (STL) buoys will be used for mooring liquefied natural gas (LNG) regasification vessels at the offshore processing, Neptune Deep Water Port.

The bend stiffeners for each of the STL buoy's will carry a gas offloading riser and umbilical. The DBSC uses ball and taper technology where female DBSC connectors are integrated into the STL buoy ahead of tow out. The DBSC male connectors are then inserted offshore to provide a secure connection for a gas offloading riser bend stiffener within a J tube and an umbilical within an I tube on each of the buoys. The risers and umbilicals are secured at the top of each respective I/J tube.

Neptune DBSC ready for installation	DBSC connector test during Neptune buoy construction	Neptune DBSC connector showing bend stiffener