Heave compensation system

B - Operations – Transporting – 63 – B

Patent

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Details

B63B 35/44 (2006.01) B63B 39/02 (2006.01) E21B 19/00 (2006.01) E21B 19/09 (2006.01)

Patent

CA 2515376

The invention pertains to a heave compensation system for continuous operation on a floating vessel (1), the system comprising at least one buoyant body (11), at least one lever arm (10) for arrangement in a generally horizontal plane, pivotal means capable of limited rotation about a horizontal axis and arranged to connect one end of the lever arm to the buoyant body (11), at least one hinge (13) connected to an intermediate point on the lever arm (10) and capable of allowing limited rotational movement of the lever arm (10) in a vertical plane, means to attach the hinge (13) to the floating vessel (1), and at least one counterbalance weight (12) connected to the lever arm (10) on the side of the hinge (13) away from the buoyant body (11), whereby the inertia of the counterbalance weight (12) resists heave movements of the buoyant body (11) relative to the floating vessel.

L'invention concerne un système de compensation de pilonnement destiné à être utilisé de façon continue sur un engin de forage flottant (1). Ce système comprend au moins un corps flottant (11), au moins un bras de levier (10) destiné à être placé dans un plan sensiblement horizontal, des moyens pivotants pouvant pivoter de façon limitée autour d'un axe horizontal et conçus pour relier une extrémité du bras de levier au corps flottant (11), au moins un élément d'articulation (13) relié à un point intermédiaire du bras de levier (10) et destiné à permettre une rotation limitée dudit bras de levier (10) dans un plan vertical, des moyens pour fixer l'élément d'articulation (13) à l'engin de forage flottant (1), ainsi qu'au moins un contrepoids (12) relié au bras de levier (10) du côté de l'élément d'articulation (13) situé à l'opposé du corps flottant (11), l'inertie de ce contrepoids (12) résistant aux mouvements de pilonnement du corps flottant (11) par rapport à l'engin de forage flottant.

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