Submerged loading system

B - Operations – Transporting – 63 – B

Patent

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Details

B63B 27/24 (2006.01) B63B 22/02 (2006.01) B63H 25/42 (2006.01)

Patent

CA 2637832

An offshore system allows a vessel (12) to sail to a predetermined sea location (14), quickly set up a loading system and start the transfer of hydrocarbons to or from a pipeline (22), and then quickly disconnect and sail away. The vessel is a DP (dynamic positioning) vessel that does not require mooring or anchor lines, so the only apparatus to install is a conduit (30) that can be picked up by the vessel to extend between a stationary pipe end (24) that lies at the sea floor and the vessel. The conduit includes primarily a flexible hose (32) that extends in a sine wave with two loops (80, 82). The conduit includes a rigid reinforced hose section (34) that is pivotally connected to the sea floor. A chain (114) can be provided with a portion of the chain lying on the sea floor, to help the disconnected hose coupling (42D) remain at a stable position above the sea floor.

La présente invention concerne un système en mer permettant à un navire (12) d'arriver à une position définie en mer (14), d'établir rapidement un système de chargement puis de commencer le transfert d'hydrocarbures avec un pipeline (22), et ensuite de se débrancher rapidement et de partir. Ce navire utilise un positionnement dynamique ne nécessitant ni de mouiller, ni de s'ancrer, le seul appareil à installer étant un conduit (30) que le navire peut prendre et qui relie le navire à une tête de ligne stationnaire (24) située au fond. Le conduit est une manche primaire (32) sinusoïdale à deux boucles (80, 82). Le conduit comporte une longueur de manche rigide renforcée (34) branchée pivotante au fond. On peut également disposer d'une chaîne (114) dont une partie traîne au fond, ce qui permettra au raccord (42D) de la manche débranchée de rester en position stable au-dessus du fond.

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