Vessel provided with a device for removing and/or installing a sub-structure of a drilling or production platform
AssigneeExcalibur Engineering B.V.
InventorsFrans Ariën Den Hartogh, Jacob Johannes Spaan
Life of this patent
Estimating the term…
Abstract
The invention relates to a vessel (1) provided with a deck (2) and with a device (3) for removing and/or installing a sub-structure (4) of a drilling or production platform, wherein said device comprises a supporting structure (5) which is capable of tilting movement in a direction transversely to an edge (6) of the deck (2), hoisting means (7) connected to said supporting structure for hoisting said sub-structure, and supporting means for supporting said sub-structure mainly during tilting movement of said supporting structure, wherein said supporting means are provided separately from the supporting structure and capable of tilting movement with respect to the edge of the deck.
Claims13
A vessel provided with a deck and with a device for removing and/or installing a sub-structure of a drilling or production platform, wherein said device comprises a supporting structure which is capable of tiling movement around a tilting axis in a direction transversely to an edge of the deck, hoisting means connected to said supporting structure for hoisting said sub-structure, and supporting means for directly supporting said sub-structure mainly during tilting movement of said supporting structure with the center of gravity of the sub-structure located on a side of the tilting axis remote from the vessel, wherein said supporting means are provided separately from the supporting structure and are capable of tiling movement with respect to the edge of the deck.
A vessel provided with a deck and with a device for removing and/or installing a sub-structure of a drilling or production platform, wherein said device comprises a supporting structure which is capable of tiling movement around a tilting axis in a direction transversely to an edge of the deck, hoisting means connected to said supporting structure for hoisting said sub-structure, and supporting means for directly supporting said sub-structure mainly during tilting movement of said supporting structure with the center of gravity of the sub-structure located on the side of the tilting axis remote from the vessel, wherein said supporting means are provided separately from the supporting structure and are capable of tiling movement with respect to the edge of the deck, and wherein said supporting structure and said supporting means have a common axis of tilt.
A vessel provided with a deck and with a device for removing and/or installing a sub-structure of a drilling or production platform, wherein said device comprises a supporting structure which is capable of tiling movement around a tilting axis in a direction transversely to an edge of the deck, hoisting means connected to said supporting structure for hoisting said sub-structure, and supporting means for directly supporting said sub-structure mainly during tilting movement of said supporting structure with the center of gravity of the sub-structure located on a side of the tilting axis remote from the vessel, wherein said supporting means are provided separately from the supporting structure and are capable of tiling movement with respect to the edge of the deck, and wherein the orientation of said supporting means with respect to the sub-structure is constant during tilting movement of said supporting structure.
Dependencies are inferred from the claim text.