Riser handling on a drilling rig and a flip and service machine for riser handling on a drilling rig
First Claim
1. A riser maintenance station for a drilling rig comprising:
- a riser manipulation device including mounting elements configured to secure opposite ends of a riser, wherein the riser has a plurality of buoyancy elements secured thereto;
said mounting elements being configured such that the riser can be elevated to allow a 360 degree inspection along a length of the riser such that one or more of the buoyancy elements can be removed or attached from/to the riser while the riser is in a horizontal position at the riser maintenance station.
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Accused Products
Abstract
An offshore drilling rig including a drill floor deck having one or more holes, each defining a well center; one or more masts upwardly extending relative to the drill floor deck, and one or more hoisting systems, each supported by at least one of the one or more masts and configured for hoisting and lowering tubular equipment through at least one of the one or more well centers; a storage area for accommodating marine riser joints in upright orientation side by side in respective upright storage positions; a riser handling apparatus, different from the hoisting systems, adapted to move at least one of said marine riser joints along a movement path between its upright storage position and a prostrate maintenance/transfer position on a maintenance/transfer area, which movement path does not intersect any of the well centers.
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Citations
16 Claims
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1. A riser maintenance station for a drilling rig comprising:
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a riser manipulation device including mounting elements configured to secure opposite ends of a riser, wherein the riser has a plurality of buoyancy elements secured thereto; said mounting elements being configured such that the riser can be elevated to allow a 360 degree inspection along a length of the riser such that one or more of the buoyancy elements can be removed or attached from/to the riser while the riser is in a horizontal position at the riser maintenance station. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A riser maintenance station for a drilling rig comprising:
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a riser manipulation device including mounting elements configured to secure opposite ends of a riser, wherein the riser has a plurality of buoyancy elements secured thereto; the riser manipulation device further including a bed for supporting the riser in a horizontal position; wherein the riser manipulation device is operable to move the riser longitudinally while the riser joint is located in a horizontal position at the riser maintenance station. - View Dependent Claims (15, 16)
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Specification