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| Number | Title | Issue Date |
| 7138038 | Expandable anode pod The present invention 10 discloses a collapsible pod for providing cathodic protection to a preferred structure 12. The present invention 10 has a top frame 20 and a bottom frame 22 with a plurality of folding leg segments 24 | 11/21/2006 |
| 6030148 | Method for improving the feasibility of a drilling rig of jack-up type and a drilling rig of jack-up type A method and apparatus for an improved drilling rig of jack-up type is provided. The drilling rig has a frame part comprising a working deck and an essentially plane-shaped bottom. Three feet are provided in the frame and are operated by lifting devices. ... | 02/29/2000 |
| 5807028 | Bottom supporting construction for a leg end of a displaceable jack-up platform A bottom supporting construction for a leg end of a displaceable jack-up platform including a block-shaped leg end part and a supporting element which can be positioned and anchored on a bottom under water and which is provided with a supporting face for ... | 09/15/1998 |
| 4969776 | Offshore platforms A marine structure, for example an offshore production plantform comprises a floating base section, which can be flooded, having caissons thereon and a topsides mounted on the caissons. The caissons comprise at least two telescopic sections,the uppermost ... | 11/13/1990 |
| 4678372 | Raising method and device, in particular for an oil exploiting platform This method for raising a platform comprising a platform proper or deck carried by legs bearing on the sea bed comprises: fixing on each of the legs (2) of the platform a raising device (4) constituting a reinforcing device whose regions of fixing to the ... | 07/07/1987 |
| 4604001 | Jackdown tension leg platform A jackdown tension leg platform is set forth which may be used for processing a commodity liberated from the ocean floor by one or more wells. The platform includes a closed buoyant hull which houses production equipment and at least one connector dispose... | 08/05/1986 |
| 4425056 | Tension control system for controlling the tension in platform supporting tension legs. The present invention provides methods and apparatus for tension compensation in the tension legs used to moor a floating platform to the sea floor. The apparatus includes one or more hydraulic jacks, each having a cylinder coupled through a load block to... | 01/10/1984 |
| 4397370 | Surf service vehicle An offshore service vehicle of tricycle configuration employs three vertical legs to support a platform which remains above the water surface as the vehicle travels from a dry land station outwardly to service stations offshore such, for example, as a sta... | 08/09/1983 |
| 4359795 | Bridge piers A bridge pier is constructed from a number of serially gradated cribs nestable one within the other for transportation and manually mountable one upon the other in order of decreasing size on arrival at a site by the use of rotatable davits attachable to ... | 11/23/1982 |
| 4122646 | Equilateral derrick structure An equilateral derrick structure such as for use in erecting chimneys and the like, wherein a plurality of horizontal members, upright diagonal brace members, and vertical column members are interconnected by a plurality of connectors to provide a desired... | 10/31/1978 |
| 4117691 | Floating offshore drilling platform A hollow generally circular horizontal float body is provided. The body tapers in thickness from its central portion of its outer periphery and includes upper and lower walls which are inclined downwardly and upwardly, respectively, from the central porti... | 10/03/1978 |
| 4073155 | Sea platform construction A sea platform includes a first part which comprises a floatable platform or deck having a plurality of supporting legs which extend therethrough and which may be elevated and lowered by an elevating mechanism. A second part comprises a floatable base whi... | 02/14/1978 |
| 4041711 | Method and apparatus for quickly erecting off-shore platforms Method and apparatus for elevating an off-shore well drilling or other platform on a support structure in a minimum of time with maximum safety. The platforms are elevated on one or more caissons, utilizing one or more jacking units. One type of support s... | 08/16/1977 |
| 3996754 | Mobile marine drilling unit A mobile marine drilling unit comprising: a floatable base; a floatable platform; and a vertical support leg attached to said base and extending upwardly through a well provided therefor in said platform. Said base and a major portion of said leg being su... | 12/14/1976 |
| 3967457 | Self-elevating offshore drilling unit legs Leg apparatus for an offshore drilling unit of the self-elevating type having a floatable hull and a plurality of legs movable from a raised position, in which the legs are supported by the hull in a body of water, to a lowered position, in which the hull... | 07/06/1976 |
