Buoys – rafts – and aquatic devices – Buoy – For mooring a vessel
Patent
1985-04-05
1987-02-24
Blix, Trygve M.
Buoys, rafts, and aquatic devices
Buoy
For mooring a vessel
114230, 141387, B63B 2152
Patent
active
046454675
ABSTRACT:
An improved offshore terminal is described, of the type that includes a riser loosely anchored at the sea floor so its upper end can extend from a deep underwater level up to the surface to moor a tanker and transfer hydrocarbons to it. A weight hangs from the lower end of the column to improved dynamic mooring and, where the riser is disconnected to limit the sink depth of the riser. For movement to the deployed position, the riser is lifted by extending a line downwardly from a winch on the vessel, through a central hole in the connector frame down to the top of the riser, the line being pulled to raise the riser until its upper end lies within the central hole of the connector frame. A perforated upper portion of the riser then is in fluid communication with the inner portion of a fluid swivel, so that hydrocarbons can pass out of a conduit within the riser and into the swivel.
REFERENCES:
patent: 3583445 (1971-06-01), Harbonn
patent: 3834432 (1974-09-01), Lily, Jr. et al.
patent: 4023517 (1977-05-01), Ruan
patent: 4086865 (1978-05-01), Statham
patent: 4207639 (1980-06-01), Nguyen
patent: 4281614 (1981-08-01), McNary et al.
patent: 4416306 (1983-11-01), Le Devehat
patent: 4490121 (1984-12-01), Coppens et al.
Amtel, Inc.
Blix Trygve M.
Swinehart Edwin L.
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