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US 2017/0321491 A1Published application
Rotating drilling towers
AssigneeTransocean Sedco Forex Ventures Limited
InventorDaniel Haslam
Life of this patent
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Abstract
Two or more rotating towers on a drilling rig may be configured to rotate between one or more wells. The rotating towers may have a common well center, such that the two or more towers can operate over the same well to provide redundant or cooperative operations. Some example cooperative operations include heavy lifting and/or isochronous tripping operations. Redundancy can be provided by the two or more rotating towers to prevent equipment failures from halting operations.
Claims24
A drilling apparatus comprising:
- two or more drilling towers configured to access a common well center,
- wherein at least one of the two or more drilling towers is configured to rotate between the common well center and at least one other well center.
A method for performing an operation, the method comprising:
- rotating a first tower over a well;
- performing a first operation over the well by the first tower;
- rotating a second tower over the well;
- and
- performing a second operation over the well by the second tower.
2 more elements
Dependencies are inferred from the claim text.