E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 19/09 (2006.01) E21B 17/01 (2006.01) E21B 19/00 (2006.01)
Patent
CA 2400736
A special installation of a riser (10) that extends between an item of subsea equipment (14) and a surface vessel (12) has been described, which installation in particular is intended for use in connection with offshore oil extration, and in which the rise (10) is provided with a telescopic section. For the purpose of heave compensation, the riser (10) is installed in a manner such tat said telescopic section (18) is located at the lower end of the riser (10), heave compensation being effected by the telescopic mobility of the riser (10), while the mass of the riser (10), when suspended in this manner, keeps the rise (10) tensioned.
L'invention concerne une installation spéciale de tube ascenseur (10) qui s'étend entre un équipement sous-marin (14) et un navire de surface (12). Cette installation s'utilise notamment dans le cadre de l'extraction de pétrole marin. Le tube ascenseur (10) est muni d'une section télescopique. Afin de compenser le pilonnement, le tube ascenseur (10) est monté de manière que la section télescopique (18) se trouve à l'extrémité inférieure du tube ascenseur (10), la compensation du pilonnement intervenant sous l'effet de la mobilité télescopique du tube ascenseur (10), la masse dudit tube ascenseur (10) le maintenant contraint lorsqu'il est ainsi suspendu.
National Oilwell Norway As
Ridout & Maybee Llp
LandOfFree
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