Method and arrangement by a workover riser connection

Details Method and arrangement by a workover riser connection Method and arrangement by a workover riser connection

E - Fixed Constructions

21

B

E21B 19/00 (2006.01) E21B 17/01 (2006.01) E21B 17/07 (2006.01)

Patent

CA 2475006

A method and arrangement for well completion and intervention operations where a workover riser (4) projecting from a wellhead (6) and up to a vessel (2) is used, and where the upper portion of the workover riser (4) is designed to be displaced from an upper position to a lowered position favourable for rigging work, where at least the upper displaceable portion of the workover riser (4) essentially follows the heave motion of the vessel (2), whereupon the upper displaceable portion of the workover riser (4) is again raised to its upper position, the workover riser (4) being equipped with a telescoping connection (1).

L'invention concerne un procédé et un dispositif permettant des opérations de complétion et d'intervention sur un puits, comprenant l'utilisation d'un tube ascenseur (4) de reconditionnement qui s'élève à partir d'une tête (6) de puits pour arriver à un navire (2). La partie supérieure du tube ascenseur (4) de reconditionnement est conçue pour être déplacée entre une position haute et une position abaissée permettant les opérations de montage, dans laquelle au moins la partie supérieure mobile du tube ascenseur (4) de reconditionnement suit sensiblement le mouvement de tangage du navire (2). La partie supérieure mobile du tube ascenseur (4) peut ensuite être relevée dans sa position haute. Ce tube ascenseur (4) de reconditionnement est équipé d'un raccord (1) télescopique.

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