Submerged calm buoy

Details Submerged calm buoy Submerged calm buoy

B - Operations, Transporting

63

B

B63B 22/02 (2006.01)

Patent

CA 2201920

A Catenary Anchor Leg Mooring (CALM) buoy (1) comprising a body (2) with buoyancy, means (3) for connecting the buoyant body to catenary anchor chains to anchor the body to the seabed, a turntable (5) being rotatable with respect to the body with buoyancy, said turntable having mooring means (6, 6') for a floating unit such as a vessel, a swivel and means for connecting at least one hose (8, 8') between at least one swivel and a submerged pipe structure extending over or into the seabed to any subsea well or the like, as well as means for connecting at least one hose (9) between at least one swivel and at least one vessel (7), wherein the CALM buoy is provided with catenary anchor chains (4) which have a weight such that the CALM buoy as a whole is kept underwater at least during normal practice.

Cette bouée (1) d'amarrage à chaîne caténaire (CALM) comprend un corps (2) doté de flottabilité, des moyens (3) destinés à relier le corps flottant aux chaînes caténaires d'ancres afin d'ancrer le corps au plancher marin, une table tournante (5) qui peut être mise en rotation par rapport au corps flottant, cette table étant pourvue de moyens (6, 6') d'ancrage destinés à une unité flottante telle qu'un bateau, une tête d'injection, des moyens servant à relier au moins un tuyau flexible (8, 8') entre au moins une tête d'injection et une structure de tuyau immergée s'étendant sur le plancher marin ou dans celui-ci jusqu'à un quelconque puits sous-marin ou analogue, ainsi que des moyens destinés à raccorder au moins un tuyau flexible (9) entre au moins une tête d'injection et au moins un bateau (7), ladite bouée (CALM) étant pourvue de chaînes caténaires (4) possédant un poids tel que la bouée est maintenue en entier sous l'eau au moins lors de l'utilisation normale de celle-ci.

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