Stabilized jack-up mobile offshore drilling platform

Abstract

A jack-up mobile offshore drilling platform includes a hull 15 having a deck 14 and spaced openings 20 through the hull adjacent the edge of the hull. Legs 25 extend through the openings and jack means 30 engage with the legs to lower the legs onto the submerged surface whereby the hull may then be elevated on the legs above the water. Compartments 40 are formed and mounted on the deck 14 of the hull 15 to surround each leg 25 with the compartments being closed to provide buoyancy compartments for increasing the range of stability of the drilling platform. <IMAGE>

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Patent Citations (4)

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    GB-1296910-ANovember 22, 1972
    GB-1495833-ADecember 21, 1977Offshore Technology CorpMethod and apparatus for offshore submersible oil storage and drilling
    GB-2110601-AJune 22, 1983Cluff Copson Designs LimitedSemi-submersible marine platform
    US-3771481-ANovember 13, 1973Santa Fe Int CorpSingle column semisubmersible drilling vessel

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    Publication numberPublication dateAssigneeTitle