Single Buoy Moorings Inc.

Philippe Lavagna

Christoph Vogt

Xavier Connaulte

Jack Pollack

Peimin Cao

Patrick Ducousso

Phillipe Jean

A system for transporting hydrocarbons from reserves located under the sea floor to a turret connected to a hydrocarbon production vessel floating at the sea surface, the hydrocarbons being transferred through at least one rigid catenary riser extending from the sea floor to a buoy, the system for transporting hydrocarbons includes an upper section of the at least one substantially rigid riser directly attached to the buoy and provided with fairings, a middle section of the rigid riser is provided with buoyancy modules so to give it a lazy wave shape and a lower section of the substantially rigid riser is in contact with the seafloor at a distance X from the buoy vertical axis that is smaller than a distance Y between the buoy vertical axis and the mooring lines anchoring elements.

Deepwater disconnectable turret system with improved riser configuration

A vessel includes a hull with a turret, a cavity in the turret and a mooring buoy releasably attached in the cavity, the buoy including a buoyant body and carrying a number of risers, extending to a subsea hydrocarbon well and a number of anchor lines connected to the sea bed, wherein upon connection of the buoy to the cavity, the buoy is attached to a pulling member connected to a winch on the vessel for lifting of the buoy. Each anchor line and/or riser at its upper end is connected to a stopper member, the stopper member being attached to the pulling member, wherein during lifting, each anchor line and/or riser and the stopper member are movable relative to the buoyant body in a length direction of the anchor lines and/or risers, and wherein after connection of the buoyant body to the cavity, the stopper member is engaged with an abutment member on the buoyant body to support the anchor line and/or riser weight off the body.

Mooring system with decoupled mooring lines and/or riser system

The invention relates to a hydrocarbon transfer system () in which a floating construction () such as a FPSO is connected to an offloading buoy () via a submerged offloading pipeline (). The motions of the buoy are de-coupled form the pipeline () via connection of the pipeline by a support member () and connecting member () while the pipeline () is extendable in a length direction to compensate for drift phenomena.

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Monaco, Monaco

Philippe Lavagna