| 摘要 |
This invention relates to a marine riser system for transferring fluid between a plurality of mutually separated locations on the seabed and a vessel ( 1 ) on the surface of the sea. The riser system comprises a submerged buoy ( 2 ), a plurality of risers suspended from the buoy ( 2 ) to the location on the sea bed and a plurality of flexible conduits ( 8 ) extending from the vessel to the submerged buoy ( 2 ). Connectors ( 7 ) carried by the submerged buoy ( 2 ) connect the flexible conduits ( 8 ) to the risers ( 6 ), each connector being remotely operable to disconnect all the flexible conduits from the risera. A central tether ( 5 ) may be provided during an installation phase only, until the risers ( 6 ) are in place and hold the buoy ( 2 ) by their own tension. Alternatively, the tether ( 5 ) may remain in place, and tensioned to limit vertical motion of the buoy. |
