Hydraulic and earth engineering – Marine structure or fabrication thereof
Patent
1985-08-05
1987-09-22
Scanlan, Jr., Richard J.
Hydraulic and earth engineering
Marine structure or fabrication thereof
405169, 405171, 166338, 166345, E02D 2100
Patent
active
046951911
ABSTRACT:
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 FIG. 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.
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Hall Kristina
Scanlan, Jr. Richard J.
The Floating Technology Company Limited
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