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| Number | Title | Issue Date |
| 7284615 | Method and system for installing and maintaining a pipeline while minimizing associated ground disturbance A pipeline installation and maintenance method and system is disclosed in which a number of interconnectible platform modules are assembled into drilling platforms from which a segmented pipeline route is flexibly installed. Using modified push/pull rigs to carry ou... | 10/23/2007 |
| 7255180 | Modular drill system requiring limited field assembly and limited equipment support A modular transfigurable drilling rig comprises one or more transfigurable containers with drilling equipment to form an operational drilling rig. The transfigurable containers include a first and second load bearing support and a load bearing bottom disposed betwee... | 08/14/2007 |
| 7194382 | Systems and methods for detection of combustor stability margin The present invention comprises systems and methods for determining stability margin of a combustor. One embodiment of the present invention includes the steps of providing a measuring device in communication with the combustor, wherein the measuring device generate... | 03/20/2007 |
| 7171309 | Downhole tool controller using autocorrelation of command sequences The present invention provides for an apparatus and method of use to control a downhole tool remotely based on the autocorrelation of command sequences. Repeating signals of a priori unknown or undefined shape can be correlated to themselves to reliably distinguish ... | 01/30/2007 |
| 7093662 | System for drilling oil and gas wells using a concentric drill string to deliver a dual density mud A system for controlling drilling mud density at a location either at the seabed (or just above the seabed) or alternatively below the seabed of wells in offshore and land-based drilling applications is disclosed. The present invention combines a base fluid of lesse... | 08/22/2006 |
| 7089746 | Systems and methods for detection of blowout precursors in combustors The present invention comprises systems and methods for detecting flame blowout precursors in combustors. The blowout precursor detection system comprises a combustor, a pressure measuring device, and blowout precursor detection unit. A combustion controller may als... | 08/15/2006 |
| 7062960 | Blow out preventer testing apparatus The consequences of any failure of a blow out preventer assembly to operate correctly in an emergency can be far reaching. Thus, there is provided an apparatus for registering parameters in the bore of a member which is, in use, connected to a pressurised housing, t... | 06/20/2006 |
| 6926097 | Jack up workover rig with removable workover floor unit An offshore jack-up workover rig. The workover rig includes a vessel which may be self powered or powered by a tug. The vessel may be raised above the surface of a water body by extending the legs until they reach the water body bed and then continuing to extend the... | 08/09/2005 |
| 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 |
| 6615915 | High pressure side-by-side wellhead system The present invention is a wellhead system for use in completing at least two well bores from within a single conductor housing. The wellhead system comprises at least one wellhead housing which is supported on the conductor housing and which comprises a ... | 09/09/2003 |
| 6609573 | Method and apparatus for a horizontal pipe handling system on a self-elevating jack-up drilling unit A pipe handling system is designed for use on an offshore structure, particularly an offshore structure provided with a cantilevered drill floor. The pipe handling system allows to handle significantly longer sections of tubulars, up to 100 feet, if neces... | 08/26/2003 |
| 6409430 | Welhead templates A drilling and production template for sub-sea wells comprises a plurality of individual limbs (1-4) each with a central hub (10-14) at one end of an arm (11-41) and a drilling receptable (12-42) on the other end of the arm. The hubs are of different diam... | 06/25/2002 |
| 6374924 | Downhole drilling apparatus A downhole drilling apparatus for interconnection in a casing or liner string having a drill bit disposed thereon for enabling the drilling of intersecting wellbores without removal of the drill bit is disclosed. In a disclosed embodiment, the apparatus c... | 04/23/2002 |
| 6275758 | Method and apparatus for determining a cross slope of a surface The present invention provides a method and apparatus for determining the cross slope created by a work implement on an earth moving machine. The method includes the steps of determining a position of the work implement, determining a direction of travel ... | 08/14/2001 |
| 6247541 | Method of drive pipe replacements on offshore platforms A method for replacing an old drive pipe in a slot on an offshore platform. The old drive pipe is first cut to provide an upper portion and a stub portion which remains firmly embedded in said marine bottom. Next, a guide cable is affixed to the stub port... | 06/19/2001 |
| 5441112 | Integrated base for oil drilling and production work An integrated oil drilling and producing base includes a single guiding funnel for guiding a wet Christmas tree into the proper position on a high pressure well head. The single guiding funnel has a cylindrical downcomer for resting directly on the high p... | 08/15/1995 |
| 5248003 | Apparatus and method for supporting the free end of a cantilever beam of a cantilevered jack-up rig A cantilevered jack-up rig having a support for supporting the free ends of the rig's cantilever beams when said beams are extended over a platform to be serviced by the rig, thereby maximizing the lateral reach of the rig and increasing the load capacity... | 09/28/1993 |
| 5098219 | Mobile submersible caisson for underwater oil-well drilling and production A mobile submersible caisson is employed to drill for and recover petroleum products from subsea wells and to deliver the products to shore or to vessels at the well site. The well drilling technique applies to water depths beyond 300 ft. and in areas whe... | 03/24/1992 |
| 5012875 | Method and apparatus for protecting a shallow-water well A method and apparatus for protecting an isolated well conductor of a shallow-water well by positioning a reinforcing frame with pile sleeves next to the well conductor near the water surface and driving piles through the pile sleeves into the ocean floor... | 05/07/1991 |
| 4907657 | Method for protecting a shallow water well Method of utilizing a jack-up well drilling rig in shallow water to drill an isolated well having an unsupported well conductor, and subsequently to attach a reinforcing frame near the water line and to drive pile through the frame into the ocean floor wi... | 03/13/1990 |
| 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 |
| 4739840 | Method and apparatus for protecting a shallow water well Method and apparatus for reinforcing a shallow water unsupported well conductor by positioning a well jacket adjacent the well conductor, raising the jacket to a selected height above the ocean floor, driving pile through the legs of the jacket, connectin... | 04/26/1988 |
| 4733732 | Submudline drivepipe whipstock method and apparatus In order to salvage a slot path on an offshore platform wherein the original conductor pipe has become clogged or otherwise rendered unusable, the original conductor is cut off below mudline, thereby leaving a stub forming a base upon which a suitably ori... | 03/29/1988 |
| 4711604 | Method of and apparatus for installing an anchor member below water level through a wall into a soil formation For the installation of an anchor member at a location below a water level through a retaining wall into a soil formation for supporting the wall, a drill mount is pivotally mounted about a horizontal axis on a retaining member secured to the wall. The dr... | 12/08/1987 |
| 4633953 | Method for offshore production of hydrocarbons concurrently with the installation of a structure therefor A method is provided for producing usable hydrocarbon product from an offshore reservoir. The method includes the economically desirable step of producing a valuable hydrocarbon product from the formation, soon after its being discovered. The product is t... | 01/06/1987 |
| 4591295 | Curved conductor well template An anchored submerged marine structure commonly referred to as a well template is located at the bottom of a body of water and used in the directional drilling of underwater wells. The well template carries curved well conductors, each conductor capable o... | 05/27/1986 |
| 4561803 | Conductor guide system for offshore drilling platform A conductor guide assembly for conductors of an offshore well platform having a jacket with an interior pile for extending from a sea bed to above a water level which is over the sea bed. In accordance with one inventive feature, a first guide mechanism c... | 12/31/1985 |
| 4561802 | Assembly of conductor guides for offshore drilling platform A conductor guide assembly for conductors of an offshore well platform having a jacket with an interior pile for extending from a sea bed to above a water level which is over the sea bed. In accordance with one inventive feature, a first guide mechanism c... | 12/31/1985 |
| 4497372 | Anti-twist control system for deviated conductor driving systems A system for controlling the deviation of the path of oil or gas well conductor casing at a desired angle, curvature and orientation in the sea bottom stratum through which it is driven from an offshore platform involving the use of conductor guide(s) equ... | 02/05/1985 |
| 4483644 | Cantilevered mobile marine rig with hydraulic load equalizer Disclosed is a cantilever mobile marine rig with hydraulic load equalizer. The rig includes a deck structure and a cantilever assembly slidingly mounted on the deck structure. The hydraulic load equalizer includes a plurality of hydraulic cylinder and pis... | 11/20/1984 |
| 4456072 | Ice island structure and drilling method An off-shore ice island structure for location over a submerged drill site in waters which normally freeze in winter. The structure includes a buoyant protective caisson which freezes in position over the drill site upon onset of winter. A barge floats on... | 06/26/1984 |
| 4421173 | Motion compensator with improved position indicator A motion compensator for disposition between an offshore support and an offshore well string or the like movable with respect to the support comprises first and second compensator bodies interconnected with the support and the well string such that relati... | 12/20/1983 |
| 4415045 | Offshore drilling of large diameter holes in rock formations A drilling rig comprises a platform (10) supported above a sea surface (14) by legs which extend to the sea bottom (16). A drill guide (30) of rigid open framework construction extends down from the platform to the sea bottom. The drill guide is only mini... | 11/15/1983 |
| 4339005 | Curved well conductors for offshore platform A method and apparatus for installing a curved well conductor (22) from an offshore marine structure (10) utilizes a leading section of precurved pipe (26) along with a plurality of trailing sections of initially straight pipe (24). The precurved pipe (26... | 07/13/1982 |
| 4326595 | Method for drilling deviated wells into an offshore substrate Method for drilling well bores into an offshore substrate from a marine platform which is fixed to the ocean floor. The latter is provided with a cage which is removably positioned in a platform leg. A drill conductor carried in the cage guides a lowering... | 04/27/1982 |
| 4307785 | Pile driving rig having angulating knuckle lead therefor An Angulating Knuckle Lead installed within an offshore pile driving rig having both upper and lower hydraulically actuated supporting kickers, independently operable for driving pile on extreme slope or batter and which is movable upwardly and downwardly... | 12/29/1981 |
| 4269542 | Jack-up rig for marine drilling This invention relates to a mobile drilling platform of the jack-up type equipped with a special system which allows the said drilling platform to work as a drilling derrick and alternatively as a hoisting crane rig for marine service.... | 05/26/1981 |
| 4249619 | Deviated drilling apparatus Marine structure adapted to be fixed to the ocean floor for drilling wellbores into the latter. A drill conductor cage is removably positioned within the marine structure at a submerged position. The cage holds one or more drill string or conductor guides... | 02/10/1981 |
| 4249618 | Method and apparatus for the working of underwater deposits A method of working an underwater deposit comprises the following stages: (a) constructing and positioning a platform structure, equipped before or after positioning with drilling devices and installations, (b) executing drilling using these devices and installatio... | 02/10/1981 |
| 4165690 | Drill units for drilling and charge laying operations and method of carrying out the operations The invention provides for a drill unit for drilling and charge laying operations and is suitable for operation on land or underwater. The drill unit comprises a rock drill mounted on a frame structure on a gantry and drill steels and casing members locat... | 08/28/1979 |
