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| Number | Title | Issue Date |
| 7322406 | Elevation sensor for a service hose and an apparatus for positioning and stabbing well tubulars An operational system and method and improved apparatus for positioning and stabbing well tubulars wherein: the grasping members of the apparatus can be folded and unfolded; the boom assembly can be pivoted to a downward clearance position; a plurality of stabbing a... | 01/29/2008 |
| 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 |
| 7165759 | Crown block dead line anchor The line system on a drilling rig is arranged to place the dead line clamp at the upper end of the derrick. A dead line anchor sheave is preferably located to accept wraps of the dead line to insure reduced load on the dead line clamp. The anchor sheave is preferabl... | 01/23/2007 |
| 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 |
| 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 |
| 6926259 | Hoist system The invention is a hoist system for use on a drilling rig made of a tubular mast with a front, back, and top side, a splittable block connected to the mast top side, a trolley with a trolley top and bottom side, wherein the trolley's top side is connected to the spl... | 08/09/2005 |
| 6920926 | Top drive well casing system A well casing system is disclosed for the handling and make-up of casing on a drilling rig in conjunction with a top drive is disclosed. The system comprises a top drive, a casing make-up assembly, links, link tilts, and transfer and lifting elevators. The operator ... | 07/26/2005 |
| 6860694 | Horizontal pipe handling device A device for handling pipes or stands including a transportation carriage for transport of pipes or stands between a pipe storage and a place for use. The carriage includes picking columns, each having a first picking arm arranged to move substantially vertically. T... | 03/01/2005 |
| 6766860 | Multi-activity offshore drilling facility having a support for tubular string An offshore drilling rig contains a heavy-duty support cart that straddles the moonpool and rides on rails. A funnel-shaped hole extends through the support cart, and a cutout on one side of the cart provides lateral access to the hole. The cart can be moved to the ... | 07/27/2004 |
| 6361262 | Drilling vessel provided with auxiliary tower or auxiliary mast The present invention relates to a drilling vessel with drilling tower or drilling mast for drilling in the earth's surface from said vessel, for example for oil or gas. The drilling vessel according to the present invention is characterized by an auxilia... | 03/26/2002 |
| 4762185 | Off-shore drilling A semi-submersible drill rig structure includes a ring-like enclosure surrounding a central drilling axis. In the structure are magazines holding drill string elements vertically. Lifting means on the structure raise the vertical drill string elements fro... | 08/09/1988 |
| 4738321 | Process and apparatus for vertical racking of drilling shafts on a drilling tower The invention concerns a process and an installation for vertical racking of drill shafts on a drilling tower. The installation comprises mechanisms (34, 36, 38, 40) to grasp an upper intermediate portion of an assembly (26) of shaft sections removed from... | 04/19/1988 |
| 4732224 | Auger apparatus Auger apparatus is disclosed adapted to utilize one or more augers each formed of a string of auger sections. The apparatus includes means for hoisting one or a plurality of auger sections simultaneously between a storage rack and a position for placement... | 03/22/1988 |
| 4684306 | Auxiliary workover rig An auxiliary rig is used in combination with a primary drilling or workover rig. The primary drilling rig typically includes an elongated upstanding drill tower, a base and a crown block. The auxiliary rig of the present invention includes a racking tower... | 08/04/1987 |
| 4652195 | Casing stabbing and positioning apparatus A casing stabbing apparatus which includes a derrick bracket subassembly for attachment to a brace of a derrick, and a boom having an end pivotally connected to the bracket assembly for pivotation about a vertical axis and about a horizontal axis. A pair ... | 03/24/1987 |
| 4531875 | Automated pipe equipment system An automated pipe handling system is provided to increase safety and to minimize the number of workmen required in the coupling and uncoupling of pipe stands. The system includes a programmable controller for monitoring and/or controlling devices which re... | 07/30/1985 |
| 4423994 | Drilling rig equipped with pairs of block and tackle systems This invention relates to drilling rigs, and more particularly to novel apparatus for supporting a plurality of pairs of block and tackle systems with the tackle systems of each pair operable sequentially and alternately, the one being used to support a m... | 01/03/1984 |
| 4421447 | Elevator transfer and support system In a drilling apparatus for handling strings of drill pipe on a drilling rig which includes a lift member or travelling block positionable over a borehole and carrying a pair of bails or links supported from the lift member at their upper ends, and having... | 12/20/1983 |
| 4348920 | Well pipe connecting and disconnecting apparatus A power driven tool for making and breaking threaded connections in a well pipe is movable between a central position of alignment with the well axis, a second position offset from the well axis and above a mousehole, and a third retracted or inactive pos... | 09/14/1982 |
| 4208158 | Auxiliary offshore rig and methods for using same An auxiliary offshore rig adapted to be used for relieving the primary offshore rig on an offshore platform of well activities relating to tubular member or cable operations. The auxiliary offshore rig includes in one embodiment a truss member mounted for... | 06/17/1980 |
| 4172684 | Floor level pipe handling apparatus Mounted on the floor of an oil well derrick substructure is a support that is rockable on an axis perpendicular to the centerline of a well being drilled beneath the substructure. One end of an arm is pivotally mounted on the support on an axis transverse... | 10/30/1979 |
| 3981369 | Riser pipe stacking system An offshore drilling rig that embodies a means for vertical stacking of riser pipe sections and blowout preventors below a derrick floor and includes riser pipe manipulating mechanisms for transporting units in a vertical condition between a storage area ... | 09/21/1976 |
| 3937514 | Guide head for pipe rackers A pipe guide head for well pipe racking apparatus has plural slides defining different sizes of pipe receiving guide openings, extensible from retracted positions within the body to extended positions for receiving pipe, each slide being connected with a ... | 02/10/1976 |
| 3937515 | Head for pipe rackers A head for use in a well pipe racking system has a support plate for drill collars and a slide shiftable to and from positions for supporting drill pipe. A retaining lever is pivoted for movement between a position for retaining the drill collars and dril... | 02/10/1976 |
