Well riser lateral restraint and installation system for...

E - Fixed Constructions – 02 – D

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E02D 5/62 (2006.01) E21B 7/12 (2006.01) E21B 17/01 (2006.01) E21B 19/00 (2006.01) E21B 41/10 (2006.01) E21B 43/01 (2006.01) E02D 27/52 (2006.01)

Patent

CA 2336901

A floating platform system supports one or more decks (14) above the water surface for accommodating equipment to process oil, gas and water recovered from a subsea hydrocarbon formation. The platform is secured to the seabed by one or more tendoms (17). A central column (12) of the platform includes a moonpool (19) extending axially through the central column (12). The moonpool (19) is open at the lower and upper ends thereof. Riser lateral restraint members (32) are supported within the moonpool (19) for laterally restraining risers (16) disposed in the moonpool (19) and minimizing riser spacing and riser deflection.

L'invention concerne un système de plate-forme flottante qui soutient un ou plusieurs ponts (14) au-dessus de la surface de la mer, de manière à accueillir l'équipement nécessaire au traitement du pétrole, du gaz et de l'eau extraits d'une formation d'hydrocarbure au fond de la mer. La plate-forme est fixée au fond marin par une ou plusieurs armatures (17). Une colonne centrale (12) de la plate-forme comprend un puits central (19) qui s'étend axialement dans ladite colonne centrale (12). Le puits central (19) est ouvert à ses extrémités supérieure et inférieure. Des éléments (32) de blocage latéral de colonne montante sont placés dans le puits central (19), de manière à bloquer latéralement les colonnes montantes (16) du puits central (19) et à réduire au minimum l'espacement et la déflection de ces colonnes.

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