Hydraulic and earth engineering – Marine structure or fabrication thereof – With work deck vertically adjustable relative to floor
Patent
1982-12-17
1986-06-24
Corbin, David H.
Hydraulic and earth engineering
Marine structure or fabrication thereof
With work deck vertically adjustable relative to floor
405224, B63C 3544, E02B 1700
Patent
active
045964947
ABSTRACT:
A device for positioning and applying tension to a set of rods (5) for holding a partially submerged platform wherein the device includes a metal frame, (12, 13A, 13B, 13C, 13D, 14), means for vertically moving said frame relative to the platform, at least one jack (21 22) of a first type which has a cylinder and a rod, at least one jack (31,32) of a second type which has a cylinder and a rod, the cylinders of the rods being fast to said frame and being disposed in such a way that the rods move vertically, the rod of the jack of the first type being fast to a plate (25) which is provided firstly with an orifice for the rod of the second type of jack to pass through and secondly with means of fixing to the end of the set of rods, the rod of the second type of jack having a stop (31, 32) at its end, the rods of the jacks of both types being of unequal length and being chosen in such a way that the jack of the second type drives the plate only in the platform immersion step. Application to oil well drilling.
REFERENCES:
patent: 3943868 (1976-03-01), Person et al.
patent: 3949883 (1976-04-01), Crooke et al.
patent: 3983828 (1976-10-01), Stram
patent: 4379657 (1983-04-01), Widiner et al.
patent: 4449854 (1984-05-01), Nayler
Bourgeois Andre
Fleury Daniel
Manesse Jean-Pierre
Ateliers et Chantiers de Bretagne-ACB
Corbin David H.
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