Passive stabilizer for floating petroleum-production systems
AssigneePetroleo Brasileiro S.A.
InventorsAntonio Carlos Fernandes, Maurício Da Justa Albano De Aratanha, Sylvio Henrique Sá Correa Da Silva
Life of this patent
Estimating the term…
Abstract
The present invention relates to a passive stabilizer (3) which is installed in the lower part of a tanker used in floating production systems which make use of a mechanism which enables the tanker (1) to rotate about a vertical axis (turret). The stabilizer gives the tanker greater directional stability and makes it possible to install the turret in a more central position along the tanker.
Claims10
A vessel used in floating hydrocarbon fuel production systems, comprising a turret mechanism which enables the vessel to rotate about a vertical axis relative to risers therebelow, wherein it comprises at least one projecting passive stabilizer body on the lower part of the hull of the vessel intended to increase the vessel's directional stability in relation to environmental conditions, wherein end plates project perpendicular to the or each said passive stabilizer body to further increase efficiency and thereby to give greater directional stability to the vessel.
A vessel used in floating hydrocarbon fuel production systems, comprising a turret mechanism which enables the vessel to rotate about a vertical axis relative to risers therebelow, wherein it comprises at least one vertically projecting passive stabilizer body on the lower part of the hull of the vessel for increasing the vessel's directional stability in relation to environmental conditions, wherein the vertical passive stabilizer body is in line with the vessel's longitudinal axis of symmetry and a longitudinal axis of said vertical passive stabilizer body is parallel to said vertical axis.
A vessel used in floating hydrocarbon fuel production systems, comprising a turret mechanism which enables the vessel to rotate about a vertical axis relative to risers therebelow, wherein it comprises at least one vertically projecting passive stabilizer body on the lower part of the hull of the vessel for increasing the vessel's directional stability in relation to environmental conditions, wherein said at least one vertically projecting passive stabilizer body projects generally vertically downwardly, so as to be generally perpendicular to a horizontal plane of the vessel.
Dependencies are inferred from the claim text.