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| Number | Title | Issue Date |
| 7410326 | Auxiliary reaction frame system for cantilevered jack-up rigs, and method therefore A retractable stern reaction frame for reinforcing self elevating platform cantilever beams. The preferred embodiment contemplates a support framework mounted on a self elevating platform transom and positioned to engage the cantilever to project the reaction point ... | 08/12/2008 |
| 7377335 | Method and apparatus for movement of drilling equipment between adjacent locations An apparatus and method for the movement of drilling equipment between topographically adjacent drilling locations comprises positioning a transportable planar surface over the adjacent drilling locations between which it is desired to move the equipment. Ports or o... | 05/27/2008 |
| 7352073 | Ocean wave energy converter having an improved generator and ballast control The ocean wave energy converter uniquely includes a generator with a rotating inner rotor surrounded by a counter-rotating outer rotor for generating electricity. A reciprocating drive rod drives the inner rotor on the downstroke of the drive rod and the outer rotor... | 04/01/2008 |
| 7291936 | Submersible electrical power generating plant A self-supporting, submersible generating plant for producing electricity from ocean currents, consisting of two counter-rotating, rear-facing turbines with a plurality of rotor blades extending radially outward from two separate horizontal axis that convey the kine... | 11/06/2007 |
| 7234896 | Vertically folding service arm for a movable platform offshore drilling or servicing rig An apparatus and method for maintaining electrical and hydraulic connections between a junction box (or junction boxes) located on or near an offshore platform's floor and a movable drilling rig structure are disclosed. The disclosed invention is a unique vertically... | 06/26/2007 |
| 7185744 | Double wheel chock frame A roller system for moving a load a predetermined distance includes a chock frame having a pair of spaced chocks connected between a pair of rigid siderails and a freely moveable roller unit. The roller unit includes a plurality of rollers and is positioned between ... | 03/06/2007 |
| 7163061 | Apparatus and method for supporting structures on offshore platforms An apparatus for supporting a structure on a platform. The platform may be a floating platform. The apparatus comprises a base frame, wherein the base frame has a first bracket and a second bracket attached thereto. The apparatus further includes a x-axis frame havi... | 01/16/2007 |
| 7101117 | Minimized wave-zone buoyancy platform Minimized Wave-zone Buoyancy is a new approach to oil and gas platform design with superior construction and performance characteristics compared to state-of-art off-shore drilling and production platforms. Minimized Wave-zone Buoyancy platforms capitalize on low cr... | 09/05/2006 |
| 7083004 | Cantilevered multi purpose tower and method for installing drilling equipment A drilling rig having a deck capable of being used offshore and a method for commissioning a well using the drilling rig and a method for decommissioning a well using the drilling rig, wherein the drilling rig comprises: a cantilever which is mounted so as to be mov... | 08/01/2006 |
| 7063159 | Multi-purpose coiled tubing handling system A system for reducing the effects of heave movements of a wellhead in an offshore drilling device is provided that includes a frame; a coiled tubing stack supported by the frame; and a heave compensation system for controlling an amount of load transferred from the ... | 06/20/2006 |
| 6997647 | Active hold down system for jack-up drilling unit A cantilever beam of a jack-up unit is provided with constant force restraining members mounted on a deck of a jack-up unit forward from conventional hold-down cantilever beam clamp. A modified cantilever beam end plate engages a first end of constant force restrain... | 02/14/2006 |
| 6932553 | Multipurpose unit for drilling and well intervention The invention is a multipurpose system for a drilling and well intervention made of a pivotable, slidable cantilever on a platform adapted to pivot and to slide along an x-y axis; a tower disposed on the cantilever with a mast, a hoist winch, a splittable block conn... | 08/23/2005 |
| 6901998 | Method for using a multipurpose system The invention is a method for drilling a well and for well intervention using a multipurpose system on a pivoting, slidable cantilever on a platform to drill a well and to perform well intervention operations, wherein the method involves pulling a completion tubing ... | 06/07/2005 |
| 6729804 | Cantilevered tower for jack-up platform A Jack Up drilling rig having a deck capable of being used offshore made of a cantilever which is mounted so as to be moveable in a first direction and a second direction, a Multi Purpose Tower fixably mounted on the cantilever, a supporting cart disposed between th... | 05/04/2004 |
| 6491477 | Self-elevating drilling unit A self-elevating drilling unit has dual cantilever assemblies that move longitudinally and transversely in relation to the jack-up platform to allow drilling operation to be performed from two drilling floors. The twin cantilever assemblies permit simulta... | 12/10/2002 |
| 6481931 | Cantilever supported drilling rig The derrick is configured to place the lift axis of the crown block toward the aft end of the rig floor. Major floor loads such as draw works are moved closer to the platform. The spare line spool support is changed from rig floor to platform. The set bac... | 11/19/2002 |
| 6406222 | Mooring construction A floating construction (11) such as for instance a SPAR buoy, which is connected to the seabed (32) by tethers and/or risers (15, 16). At the top part the floating construction (11) comprises a displacement member (17') mounted on a mounting frame (17). ... | 06/18/2002 |
| 6390732 | Jack-up, movable drilling platform having a telescoping outrigger A jack-up, movable drilling platform comprises a telescopic outrigger structure which is movable between a retracted position where it is located above the drilling platform's deck and an extended position where it projects outwards and away from the deck... | 05/21/2002 |
| 6217258 | Dual hoist derrick system for deep sea drilling A dual hoist derrick system for deep sea drilling, capable of elevating a very long and massive heavy object involved in a drilling for deep sea, is provided with a normal drilling hoisting system and a heavy load hoisting system arranged on a single derr... | 04/17/2001 |
| 6210076 | Offshore deck installation A method and apparatus that eliminates the need for a derrick barge to lift the deck into place on a floating offshore structure. A connector is used to connect the transport barge to the floating offshore structure. The connector is a type that allows on... | 04/03/2001 |
| 6171027 | Cantilevered jack-up platform A drilling rig, in particular for the offshore industry, in the form of a jack-up platform on which a cantilever is mounted so as to be movable at least substantially horizontally and in a first direction, with the cantilever projecting more or less outsi... | 01/09/2001 |
| 6161358 | Modular mobile drilling system and method of use A modular mobile drilling system and method of use supports land-based drilling operations on remote sites. Plural support boxes fixedly deployed in first and second rows define a drilling zone. A plurality of platform support beams disposed from the firs... | 12/19/2000 |
| 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 |
| 5997217 | Shallow water well-drilling apparatus A submergible vessel for use in shallow-water oil drilling includes a pair of spaced pontoons selectively submergible and raisable in water by the admission and expulsion of water, a main deck, a frame supporting the main deck over the pontoons, and a jac... | 12/07/1999 |
| 5492436 | Apparatus and method for moving rig structures Disclosed is an improved apparatus and method of moving a large, heavy structure or piece of machinery, such as an oil rig structure on an offshore platform. A plurality of load bearing plates are provided for supporting the structure. Each of the load be... | 02/20/1996 |
| 5407302 | Method and apparatus for skid-off drilling A different approach to tender assisted drilling which has the flexibility to be used with multiple jack-up rigs, and nearly any type of fixed offshore production platform. A skid base includes distinct capping beam feet and skid-off feet, the former adju... | 04/18/1995 |
| 5290128 | Method and apparatus for transferring a drilling apparatus from a movable vessel to a fixed structure A skidbase 16 and a drilling structure 18 are adapted for transfer between a jack-up platform 12 and a fixed platform 14. The jack-up platform 12 is moved into position adjacent the fixed platform 14 and raised to a height aligned with the fixed platform ... | 03/01/1994 |
| 5139367 | System for moving drilling module to fixed platform A system for aligning a drilling module on a jack-up rig with a drilling module support surface on a fixed rig wherein the angular disposition of the drilling module is varied by moving a portion of the jack-up rig on at least one of the legs of the jack-... | 08/18/1992 |
| 5052860 | System for moving drilling module to fixed platform A system for aligning a drilling module on a jack-up rig with a drilling module support surface on a fixed rig wherein the angular disposition of the drilling module is varied by moving a portion of the jack-up rig on at least one of the legs of the jack-... | 10/01/1991 |
| 5051035 | Bearing system for a turning means A device for supporting a turntable (1) on a vessel, especially a vessel for use in connection with drilling for and production of oil, which vessel is anchored to the sea floor, via the turntable (1). The turntable (1) comprises a horizontal circular fla... | 09/24/1991 |
| 5032040 | System for moving drilling module to fixed platform A jack-up rig includes a cantilever beam assembly and a drilling module is mounted on the cantilever beam assembly. The jack-up rig also includes means for moving the cantilever beam assembly from the storage position to extended positions wherein a rearw... | 07/16/1991 |
| 4973198 | Offshore drilling rig transfer Method and apparatus for transferring a derrick from a jack-up rig to an offshore platform are disclosed which include positioning the rig and platform next to each other, providing an elevator pad on the platform that is set at the same level as the deck... | 11/27/1990 |
| 4938628 | System for moving drilling module to fixed platform A jack-up rig includes a cantilever beam assembly and a drilling module is mounted on the cantilever beam assembly. The jack-up rig also includes means for moving the cantilever beam assembly from the storage position to extended positions wherein a rearw... | 07/03/1990 |
| 4913591 | Mobile marine platform and method of installation A mobile marine drilling assembly has a horizontally disposed pontoon which floats on or is submerged below the surface of a marine environment. A first vertically disposed column is secured to the pontoon and extends upwardly therefrom. A work platform h... | 04/03/1990 |
| 4848966 | Arrangement in a production platform A production platform for offshore exploitation of hydrocarbons comprises a truss tower (1) which rests on the sea floor (2) and supports a deck structure (3) provided with a drilling module (5). In order to obtain optimum mutual distance between producti... | 07/18/1989 |
| 4823870 | Cantilever drilling structure A cantilevered drilling structure including a base unit having a side positionable generally adjacent a well head, and a drilling rig mast assembly positioned generally above and supported by the base unit. The base unit has a cantilever member extending ... | 04/25/1989 |
| 4784410 | Concentric piping flex joint Several versions of a flex joint (10, 100, 200) are disclosed which provides for relative flexible movement between a first member and a second member about a pivot point. The pivotal motion is provided by the use of elastomeric assemblies which are place... | 11/15/1988 |
| 4716972 | Floating drilling platform A floating semisubmersible off-shore drilling platform or the like comprises an upper working level portion and a lower pontoon portion. When the platform is transported from one place to another, it floats on the pontoon portion, but when it is working a... | 01/05/1988 |
| 4630681 | Multi-well hydrocarbon development system A multi-well hydrocarbon development system is economically established and operated by drilling cluster wells through the piles securing the base structure which supports a semisubmersible tension leg buoy through a single leg assembly. The buoy includes... | 12/23/1986 |
| 4609306 | Ice-breaking off-shore drilling and production structure An ice-breaking structure having a platform member adapted to be flexibly connected to an off-shore fixed well shaft in a manner which allows the platform to lift and/or tilt relative to the shaft is disclosed. The platform member has at least one lower s... | 09/02/1986 |
