Protection means for a flexible riser

Details Protection means for a flexible riser Protection means for a flexible riser

B - Operations, Transporting

63

B

B63B 27/34 (2006.01) E21B 17/01 (2006.01) B63B 21/50 (2006.01)

Patent

CA 2498824

The invention relates to flexible risers for transfer of hydrocarbons between a sea bed installation and a vessel (10) floating at the sea surface. The riser (18) is provided with means (20) for protecting the riser (18) from impacts. The protection means (20) covers at least the upper part of the riser (18) and is retractable to an inactive position. When in operation, the riser protection means (20) is either suspended from the vessel (10) or from a submerged turret buoy, forming part of a mooring system for the vessel (10).

L'invention se rapporte à des colonnes montantes souples destinées au transfert d'hydrocarbures entre une installation située sur le lit marin et un bâtiment flottant (10) se trouvant à la surface de la mer. La colonne montante (18) est pourvue d'un moyen (20) conçu pour la protéger des chocs. Ce moyen de protection (20) recouvre au moins la partie supérieure de la colonne montante (18) et il est rétractable dans en position non opérationnelle. Lorsqu'il est en fonctionnement, le moyen de protection (20) de la colonne montante est soit suspendu au bâtiment flottant (10) ou à une bouée de tourelle immergée, formant ainsi partie d'un système d'ancrage du bâtiment flottant (10).

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