Handling system for effecting a submerged coupling

Details Handling system for effecting a submerged coupling Handling system for effecting a submerged coupling

E - Fixed Constructions

02

D

61/5.8

E02D 15/00 (2006.01) B63B 27/24 (2006.01) E21B 43/01 (2006.01) F16L 1/26 (2006.01)

Patent

CA 1241546

ABSTRACT. HANDLING SYSTEM FOR EFFECTING A SUBMERGED COUPLING An offshore oil platform (1) is provided with an improved riser handling system for making a subsea connection of a riser (6) to the platform, without the need for divers or boats to move the riser into position. A first coupling part (7) on the riser (6) is releasably coupled to a second coupling part (8) which in turn is releasably connected to a third coupling part (9) mounted in a submerged position on the platform. The second coupling part (8) is used as a guide to position the riser. The part (8) is coupled to cables (12,14) wound by winches (13,15). In use the riser can be released from the position shown in Figure 1 to fall to the sea bed. To reconnect the riser, it is raised by davit 16 onto a platform 17, where the second coupling part (8) is fitted onto the part (7) on the riser. The cables 12,14, are then adjusted to draw the second coupling part (8) and hence the riser to the third coupling part ( 9 ) for connection therewith.

488168

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