Technip France

Christian Perol

Marc Cahay

Pierre-Armand Thomas

The invention relates to a structure for transporting, installing, and dismantling a deck () of an off-shore exploitation rig, for installing, and dismantling this deck () on at least one supporting column, characterized in that it comprises two transport barges () and means () for supporting and raising the deck (), temporarily connected to said deck and to said barges and configured to be supported by these barges for supporting said deck between said barges and a method for transporting, installing, and dismantling the deck () using the structure for transporting, installing, and dismantling the deck ().

Structure for transporting, installing and dismantling a rig deck and methods for transporting, installing and dismantling this deck

A complementary locking system for locking legs to the deck of a jack-up offshore drilling platform is disabled. The system includes at each leg, at least one assembly comprising plates forming two counter-racks that engage with a leg rack and, on one side of the plates, at least one internal element for connecting the internal edges of the plates, at least one external element for connecting the external edges of the plates and at least one intermediate member for connecting said at least one internal element to said at least one external element. Methods of installing said complementary locking system on the legs of a jack-up offshore drilling platform are also disclosed.

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Viroflay, France

Christian Perol