B - Operations – Transporting – 63 – B
Patent
B - Operations, Transporting
63
B
114/58.2
B63B 22/18 (2006.01) B63B 35/44 (2006.01) E21B 17/01 (2006.01)
Patent
CA 1280646
Abstract Of The Disclosure The present invention provides a service buoy for performing direct wireline maintenance of a subsea well. The buoy is maintained in position over the well by a rigid riser kept under tension and which allows for the well re-entry. The primary buoyant body of the buoy is maintained permanently submerged and a truss structure presenting the minimum surface area to the action of wind and waves extends above the sea level to support a small deck from which the wireline work can be performed. The centers of gravity and buoyancy for the buoy are in close proximity so as to minimize lateral surge and sway motions of the installed buoy.
506306
de Oliveira Joao G.
Erb Paul R.
Morton Arthur W.
Triantafyllou Michael S.
Conoco Inc.
de Oliveira Joao G.
Erb Paul R.
Mccallum Brooks & Co.
Morton Arthur W.
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