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US 8,141,509 B2Granted
Subsea salvage operation using lifting magnet
AssigneeWild Well Control, Inc.
InventorsCorey Eugene Hoffman, Theodore Wade Caffarel
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Abstract
Embodiments of the present invention generally relate to a subsea salvage operation using a lifting magnet. In one embodiment, a method of salvaging a submerged production platform includes deploying a salvage vessel to a wreckage site of the submerged production platform; lowering a lifting magnet from the salvage vessel to the submerged production platform; and activating the lifting magnet, thereby capturing at least a portion of the submerged production platform.
Claims7
A method of salvaging a submerged production platform, comprising:
- deploying a salvage vessel to a wreckage site of the submerged production platform;
- dispatching a diver or remotely operated vehicle (ROV) from the salvage vessel to the submerged production platform;
- cutting the submerged production platform into manageable pieces by the diver or ROV;
- lowering a lifting electromagnet from the salvage vessel to the submerged production platform using a crane of the salvage vessel, wherein the lifting electromagnet comprises:
- a case having a cavity formed therein,
- a winding made from a conductive material and disposed in the cavity,
- a bottom made from a non-magnetic material and welded to the case, thereby making the cavity watertight, and
- a watertight terminal connector for receiving an electric cable;
- activating the lifting electromagnet, thereby capturing one or more of the manageable pieces;
- and
- raising the captured pieces to a surface of the sea using the crane.
8 more elements
Dependencies are inferred from the claim text.