Floating offshore facility and a method for drilling a well
AssigneeTotal SA
InventorPhilippe Labrugere
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Abstract
A floating offshore facility for offshore hydrocarbon production, comprising an upper deck, a lower deck, a well bay comprising a plurality of drilling slots and a plurality of production slots surrounding said drilling slots, a cart supporting a drilling riser and being movable together with said drilling riser inside the opening of the plurality of the drilling slots, and a drilling rig movable above the well bay to drill the well through the drilling riser.
Claims16
A floating offshore facility for shore hydrocarbon production, wherein the offshore facility comprises:
- an upper deck and a lower deck,
- a well bay located on the lower deck, said well bay being composed of a plurality of drilling slots and a plurality of production slots surrounding said drilling slots, each production slot being adapted to receive a production riser after a well is completed at a drilling slot neighbour of said production slot, the plurality of drilling slots forming one opening inside the lower deck,
- a cart located between the upper and lower deck, said cart supporting a drilling riser and being movable together with said drilling riser inside said one opening of the plurality of the drilling slots, and
- a drilling rig located above the upper deck, said drilling rig being movable above the well bay so as to be positioned in alignment above the cart to allow to drill the well in using the drilling riser inside the drilling slot.
A method for drilling a well, wherein said method is implemented on a floating offshore facility for offshore hydrocarbon production, said offshore facility comprising:
- an upper deck and a lower deck,
- a well bay located on the lower deck, said well bay being composed of a plurality of drilling slots and a plurality of production slots surrounding said drilling slots, each production slot being adapted to receive a production riser after a well is completed at a drilling slot neighbour of said production slot, the plurality of drilling slots forming one opening inside the lower deck,
- a cart located between the upper and lower deck, said cart supporting a drilling riser and being movable together with said drilling riser inside said one opening of the plurality of the drilling slots, and
- a drilling rig located above the upper deck, said drilling rig being movable above the well bay so as to be positioned in alignment above the cart to allow to drill the well in using the drilling riser inside the drilling slot,
- and wherein the method comprises the following initial steps:
- moving the cart to a drilling slot, and
- positioning the drilling rig in alignment above the cart, and
- connecting the drilling riser to the well at the seafloor.
Dependencies are inferred from the claim text.