A device includes at least one float. The at least one float is configured to provide a buoyancy force away from a seabed when placed in water. The device also includes an enclosure configured to house the at least one float. The enclosure comprises at least one connection configured to couple the enclosure to a self-elevating unit used in offshore oil operations or offshore gas operations.

A method of elevating the deck area of a marine platform (e.g., oil and gas well drilling or production platform) utilizes a specially configured sleeve support to support the platform legs so that they can be cut. Once cut, rams or jacks elevate the platform above the cuts. The sleeve support is then connected (e.g., welded) to the platform leg and becomes part of the structural support for the platform. In one embodiment, two sleeves are employed. In another embodiment, the jacks or rams elevate in two stages including a first stage wherein one sleeve elevates and the other sleeve does not elevate and a second stage wherein both sleeves elevate together.

A marine or land habitation system includes a habitable chamber and a monopole column supporting the habitable chamber at a first end of the monopole column. The monopole column includes a second end, opposite the first end, for mounting in the seabed or dry land. The habitable chamber is moveable with respect to the column both rotationally and vertically.

A marine or land habitation system includes a habitable chamber and a monopole column supporting the habitable chamber at a first end of the monopole column. The monopole column includes a second end, opposite the first end, for mounting in the seabed or dry land. The habitable chamber is moveable with respect to the column both rotationally and vertically.

The present invention relates to a lifting device for lifting an upper part of a sea platform, the sea platform comprising a support structure and a top side, the lifting device being constructed to be positioned on a lifting vessel, the lifting device comprising: a base frame constructed to rest on the lifting vessel, at least one console frame connected to the base frame via a flexible connection system, a suspension system connected to the console frame and comprising a leg connector, wherein the suspension system is constructed to allow freedom of movement of the leg connector relative to the console frame, wherein the flexible connection system forms a flexible connection between the console frame and the base frame and allows a predetermined movement of the console frame.

A method of elevating the deck area of a marine platform (e.g., oil and gas well drilling or production platform) utilizes a specially configured sleeve support to support the platform legs so that they can be cut. Once cut, rams or jacks elevate the platform above the cuts. The sleeve support is then connected (e.g., welded) to the platform leg and becomes part of the structural support for the platform. In one embodiment, two sleeves are employed. In another embodiment, the jacks or rams elevate in two stages including a first stage wherein one sleeve elevates and the other sleeve does not elevate and a second stage wherein both sleeves elevate together.

A method of elevating the deck area of a marine platform (e.g., oil and gas well drilling or production platform) utilizes a specially configured sleeve support to support the platform legs so that they can be cut. Once cut, rams or jacks elevate the platform above the cuts. The sleeve support is then connected (e.g., welded) to the platform leg and becomes part of the structural support for the platform. In one embodiment, two sleeves are employed. In another embodiment, the jacks or rams elevate in two stages including a first stage wherein one sleeve elevates and the other sleeve does not elevate and a second stage wherein both sleeves elevate together.

The present invention relates to a hydraulic height adjusting device for installing a heavy-weight structure to secure stable horizontal bearing power against a horizontal load of a heavy-weight upper structure. The present invention includes a lower frame which is installed on a top surface of the carrier and is provided with a plurality of receiving portions formed in an upwardly opened shape; and a hydraulic cylinder which is disposed in and engaged to the respective receiving portions of the lower frame, the hydraulic cylinder being moved in a vertical direction to adjust the height of the upper structure, in a state in which an upper end thereof supports the upper structure. The receiving portion is provided with a support guide which is interposed between an inner wall of the receiving portion and the hydraulic cylinder to annually enclose the hydraulic cylinder and thus prevent the hydraulic cylinder from being tilted.

The present invention relates to an apparatus for engaging a first body with a second body, for example, for locking an oil rig platform to a rig leg. The apparatus comprises a driving portion, for example in the form of a driving wedge, which is moveably attachable to the first body, and an engaging portion, for example in the form of an engaging wedge, which is moveably attached to the driving portion. The driving portion is adapted to move in a first direction with respect to the second body and the engaging portion defines an engaging profile adapted to engage a complementary profile on the second body. Movement of the driving portion results in movement of the engaging portion. The apparatus also comprises an adjustment device connecting the driving portion to the engaging portion and adapted to move the engaging portion independently of the driving portion.

According to certain embodiments, a method is performed using a self-elevating vessel having at least one preload tank and a plurality of movable support legs each with a spudcan affixed at the base. The method comprises locating the self-elevating vessel at a first ocean environment, lowering the legs to a surface of a seafloor with a first bearing pressure requirement, and filling the at least one preload tank to a first volume that is sufficient to drive the footings into the seafloor. The first volume is different than a second volume that is a volume sufficient to drive the footings into a seafloor of a second ocean environment that has a different bearing pressure requirement than the seafloor of the first ocean environment. The preload tank is sized to have a volume capacity based on the greater bearing pressure requirement between the first and the second ocean environment.