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US 2016/0258552 A1Published application
Device for lowering or retrieval of a pipeline at the seabed
AssigneeAker Solutions AS
InventorJohan LARSSON
Life of this patent
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AssigneeAker Solutions AS
InventorJohan LARSSON
Estimating the term…
A lifting device for lowering a pipeline end from a water surface to a seabed, alternatively later retrieval of the same from the seabed to the water surface, said pipeline end being provided with an outboard connecting part designed for mating and connection with an inboard connecting part on the seabed. The lifting device includes a hang off clamp adapted for connection with the outboard connecting part, at least one lifting arm pivotably connected to the hang off clamp at a respective first end of said at least one lifting arm and a yoke, said yoke being adapted to be releasable connected to the at least one lifting arm at a respective second end of said lifting arm, said at least one lifting arm having a locking arrangement for securing the at least one lifting arm to the hang off clamp in a non-rotational resting position. A method for lowering of a pipeline end from a water surface and retrieving a pipeline end from a seabed by use of the lifting device is also disclosed.
A lifting device for lowering a pipeline end from a water surface to a seabed, alternatively later retrieval of the same from the seabed to the water surface, said pipeline end being provided with an outboard connecting part designed for mating and connection with an inboard connecting part on the seabed, the lifting device comprising:
A method for lowering a pipeline end from a water surface by using of a lifting device for receiving an outboard connection part designed for mating and connecting with an inboard connecting part arranged on the seabed, said lifting device comprising a hang off clamp with at least one lifting arm rotatably connected to the hang off clamp and a yoke releasably connected to the at least one lifting arm, said method comprising the following steps:
A method for retrieval of a pipeline end from a seabed by use of a lifting device for receiving an outboard connection part designed for mating and connecting with an inboard connecting part arranged on the seabed, said lifting device comprising a hang off clamp with at least one lifting arm rotatably connected to the hang off clamp, and a yoke releasably connected to the at least one lifting arm, said method comprising:
Dependencies are inferred from the claim text.