Patent ID: 6736571
Filing Date: 2004-05-18
Classification: B63B,E02B

Abstract:
A method of removing a deck from an offshore structure including a deck supported on a jacket, the method including the following steps:a) positioning a floating vessel around the jacket with respective parts of the vessel on opposite sides of the jacket and trusses extending between and connecting the opposite parts of the vessel, b) engaging parts of the trusses with legs of the jacket, c) securing the trusses to the jacket, d) relieving the load carried by portions of the legs of the jacket, e) cutting through the portions of the legs of the jacket to divide the jacket into a lower part and an upper part carrying the deck, the trusses being secured to the upper part of the jacket, f) transferring the weight of the upper part of the jacket and of the deck via the trusses to the floating vessel, and g) removing the floating vessel, with the trusses, the upper part of the jacket and the deck supported thereon, from the vicinity of the lower part of the jacket.