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US 2015/0167271 A1Published application
Subsea Crane System
OwnerRoger Walls, Mark A. Johnsoninventors
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Abstract
A subsea crane system and a method of installing equipment using the same. In one example, the subsea crane system a plurality of winches positioned adjacent to a seabed and each of the winches has an associated winch line. A buoyancy tank is mechanically connected to each of the winches by the winch lines. A lift line extends from the buoyancy tank and an engagement device is provided at the end of the lift line.
Claims14
A subsea crane system comprising:
- a plurality of winches positioned adjacent to a seabed, each of the plurality of winches having an associated winch line;
- a buoyancy tank mechanically connected to each of the plurality of winches by the winch lines;
- a lift line extending from the buoyancy tank;
- and
- an engagement device provided at the end of the lift line.
2 more elements
A method of installing equipment comprising:
- providing a subsea crane system comprising:
- a plurality of winches positioned adjacent to a seabed, each of the plurality of winches having an associated winch line;
- a buoyancy tank mechanically connected to each of the plurality of winches by the winch lines;
- a lift line extending from the buoyancy tank;
- and
- an engagement device provided at the end of the lift line;
- operating at least one of the plurality of winches to move the buoyancy tank in a position over a piece of equipment adjacent to the seabed;
- connecting the lift line to the piece of equipment with the engagement device;
- and
- operating at least one of the plurality of winches to move the buoyancy tank and the piece of equipment into an installed position.
7 more elements
Dependencies are inferred from the claim text.