Arrangement on a floating device for overhauling offshore hydrocarbon wells
AssigneeMoss Maritime AS
InventorsLars Martin Sørhaug, Leif Harald Pettersen, Per Herbert Kristensen
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Abstract
An arrangement on a floating device for overhauling offshore hydrocarbon wells comprises a drill floor for conducting the overhaul, where the drill floor is provided with an opening. A vertically movable working deck can be inserted into the opening, and is provided with an attachment for a riser which extends from a well to the working deck. The working deck is suspended in the floating device by riser tensioners in order to maintain approximately constant tension in the riser during vertical movement of the floating device.
Claims6
An arrangement on a floating device for overhauling offshore hydrocarbon wells, comprising a vertically movable working deck which is provided with attachment means for a riser which extends from a well to the working deck, where the working deck is kept at an approximately constant level with heave-compensating means, the floating device comprises a drill floor for conducting the overhaul, the drill floor is provided with an opening, the working deck is inserted in the opening and the working deck is suspended in the floating device with riser tensioners for maintaining approximately constant tension in the riser during vertical movement of the floating device.
Dependencies are inferred from the claim text.