Mooring system with decoupled mooring lines and/or riser system

Details Mooring system with decoupled mooring lines and/or riser system Mooring system with decoupled mooring lines and/or riser system

B - Operations, Transporting

63

B

B63B 21/50 (2006.01) B63B 22/02 (2006.01)

Patent

CA 2755491

This invention relates to a vessel comprising a hull with a turret, a cavity in the turret and a mooring buoy releasably attached in the cavity, the buoy comprising 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, characterized in that 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 rela-tive 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.

L'invention concerne un navire comportant une coque ayant une tourelle, une cavité dans la tourelle et une bouée d'amarrage attachée de manière libérable dans la cavité, la bouée comportant un corps flottant et portant un certain nombre de colonnes montantes, s'étendant jusqu'à un puits d'hydrocarbures sous-marin et un certain nombre de câbles d'ancrage raccordés au lit marin. Lors du raccordement de la bouée à la cavité, la bouée est attachée à un élément de traction raccordé à un treuil sur le navire pour soulever la bouée. Le navire est caractérisé en ce que chaque câble d'ancrage et/ou colonne montante au niveau de son extrémité supérieure est raccordé à un élément de bossage, l'élément de bossage étant attaché à l'élément de traction. Au cours du levage, chaque câble d'ancrage et/ou colonne montante et l'élément de bossage sont mobiles par rapport au corps flottant dans un sens de la longueur des câbles d'ancrage et/ou colonnes montantes et après raccordement du corps flottant à la cavité, l'élément de bossage est mis en prise avec un élément d'appui sur le corps flottant pour supporter le poids du câble d'ancrage et/ou de la colonne montante par rapport au corps.

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