Ships – Towing or pushing – Cable fairing
Patent
1981-06-26
1983-08-16
Blix, Trygve M.
Ships
Towing or pushing
Cable fairing
166367, E21B 33035
Patent
active
043984878
ABSTRACT:
A fairing for elongated elements is disclosed for reducing current-induced stresses on the elongated element. The fairing is made as a stream-lined shaped body that has a nose portion in which the elongated element is accommodated and a tail portion. The body has a bearing connected to it to provide bearing engagement with the elongated element. A biasing device interconnected with the the bearing accommodates variations in the outer surface of the elongated element to maintain the fairing's longitudinal axis substantially parallel to the longitudinal axis of the elongated element as the fairing rotates around the elongated element. The fairing is particularly adapted for mounting on a marine drilling riser having flotation modules.
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Grant, et al, "Riser Fairing For Reduced Drag and Vortex Supression." 9th Annual Offshore Technology Conference, OTC No. 2921, 1977.
L. M. Harris, "Deepwater Floating Drilling Operations", pp. 185-187, (1979).
Hale, "Fairing Drill Rig Riser Pipes." Engineering Digest, Jun. 1978.
"Rigstream," Fathom Oceanology Limited, 1976.
Gardner Terry N.
Greer Matthew N.
Ortloff John E.
Blix Trygve M.
Brahan Thomas J.
Exxon Production Research Co.
Lawson Gary D.
Phillips Richard F.
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