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| Number | Title | Issue Date |
| 7201241 | Self relieving seal Self relieving seals of this invention comprise an elastomeric seal body having a first sealing surface and a second sealing surface for contact with respective drill bit sealing surfaces. The seal includes a pair of external surfaces that each extend along the seal... | 04/10/2007 |
| 7201237 | Stabilizing system and methods for a drill bit A drill bit stabilizing system comprising a body member having an axis and at least one recess formed in the body member housing at least one stabilizing member when in a first retracted position. The stabilizing member is positionable along a diagonal angle with th... | 04/10/2007 |
| 7198119 | Hydraulic drill bit assembly In one aspect of the present invention a drill bit assembly has a body portion intermediate a shank portion and a working portion. The working portion has at least one cutting element and the body portion has at least a portion of a jackleg apparatus. The jackleg ap... | 04/03/2007 |
| 7199480 | Vibration based power generator A vibration based power generator. In a described embodiment, an electrical power generating system includes a vibrating assembly which vibrates in response to fluid flow across the vibrating assembly. A generator generates electrical power in response to displaceme... | 04/03/2007 |
| 7195085 | Drill bit An expandable drill bit comprises a body for mounting on a support string and two roller cutters mounted on the body. The cutters are movable between a smaller diameter first configuration and a larger diameter second configuration. In one embodiment the bit is adap... | 03/27/2007 |
| 7195080 | Expandable drilling tool and method A system is provided (1) for increasing the diameter of at least a portion of a well bore, the system being intended to be attached to a drill pipe (3), the system having a support element (10) bearing cutting arms (13, 14) which is movab... | 03/27/2007 |
| 7195081 | Method and device for boring holes in soil or rock In a method and device for boring or drilling, in particular percussion drilling or rotary percussion drilling, holes in soil or rock, wherein a borehole is formed by a percussive and/or rotary movement carried out by a drill bit (2) mounted on a drill rod as... | 03/27/2007 |
| 7191853 | Hole cleaning and/or forming tool A tool for cleaning and/or forming holes, the tool having a shaft, the shaft having a lower end and at least two buckets attached adjacent to the lower end of the shaft, each bucket having an open mouth which extends radially from the axis of the shaft, consequently... | 03/20/2007 |
| 7191851 | Unattended ground sensor assembly There is provided a ground sensor assembly adapted for deployment from air to a selected ground location. The ground sensor assembly comprises an aerially deployable sensor housing which has upper and lower housing ends defining a longitudinally elongated aperture t... | 03/20/2007 |
| 7191829 | Gripper assembly for downhole tools A gripper assembly for anchoring a tool within a downhole passage and for possibly assisting movement of the tool within the passage. The gripper assembly includes an elongated mandrel and flexible toes that can be radially displaced to grip onto the surface of the ... | 03/20/2007 |
| 7188672 | Well string assembly A well string assembly includes an upper tubular well string part having upper and lower ends between which there is formed a passageway, a lower well string part having upper and lower ends, which lower end is spaced apart from the lower end of the upper well strin... | 03/13/2007 |
| 7188682 | Multi-stage diffuser nozzle A multi-stage diffuser nozzle for use as a drill bit nozzle jet includes a flow restriction portion upstream of a fluidic distributor portion, and also preferably includes a transition region between these two. The flow restrictor communicates with the interior flui... | 03/13/2007 |
| 7188547 | Tubular connect/disconnect apparatus An apparatus for rotating a tubular, the apparatus, in at least certain aspects including a frame, a rocker assembly connected to the frame, the rocker assembly including a top rocker arm pivotably mounted to the frame, and a bottom rocker arm pivotably mounted to t... | 03/13/2007 |
| 7188683 | Drilling method A system and method is disclosed for continuously supplying drilling fluid down a bore hole while adding or removing tubulars. ... | 03/13/2007 |
| 7188684 | Locking pin assembly for locking dog housing A locking pin mechanism for a locking dog which provides for a support sleeve including steps with indentations for supporting a grasping member, and pins whose slanted face intersects the plan of the drive wrench bore in the locking dog when the drive wrench is bei... | 03/13/2007 |
| 7190084 | Method and apparatus for generating electrical energy downhole A method and apparatus that uses the flow of drilling fluid to generate electrical energy in a downhole environment. A substantially cylindrical housing comprises a wall having an inlet, an outlet, and a hollow passageway therebetween. A flow of drilling fluid throu... | 03/13/2007 |
| 7188686 | Top drive systems A top drive system for wellbore operations including a hollow bore alternating current permanent magnet motor with a motor bore therethrough, a planetary gear system coupled to the motor, the gear system having a gear system bore therethrough, a quill drivingly conn... | 03/13/2007 |
| 7188688 | Down-hole tool filter and method for protecting such tools from fluid entrained debris An improved apparatus for filtering down-hole drilling fluids, insertable at any point in the drill string, i.e.: tool joints or within instrument subs. The filter element is a disk insertable between the two threadably connected ends of any two lengths of the drill... | 03/13/2007 |
| 7188691 | Metal seal with impact-absorbing ring Disclosed is a seal assembly for dynamically sealing between rotatable members, such as employed to seal the rolling cone of a rock bit. One preferred assembly includes an energizer, first and second seal rings, and a cushioning ring having an L-shaped cross-section... | 03/13/2007 |
| 7185708 | Coiled tubing/top drive rig and method The rig for selectively inserting coiled tubing or a threaded tubular through a rig floor 13 and into a well includes a mast 15 extending upward from the rig floor and movable between a threaded tubular position and a coiled tubing position. A top driv... | 03/06/2007 |
| 7185717 | Drill bit assembly A drilling apparatus comprises a casing shoe, ring bit, and center bit. The casing shoe may be connected to a casing received within the casing shoe. The ring bit is received within the casing shoe and retained at the end of the casing. The ring bit rotates relative... | 03/06/2007 |
| 7185719 | Dynamic annular pressure control apparatus and method A drilling system for drilling a bore hole into a subterranean earth formation, wherein at least a portion of the mud flow from the primary mud pump is diverted to the mud discharge outlet, thereby creating a backpressure system to readily increase annular pressure.... | 03/06/2007 |
| 7182153 | Methods of casing drilling The present invention provides a method and apparatus for casing while drilling without the use of an underreamer. In one aspect, the invention provides a flexible drill collar that enables drilling of a large enough borehole for passage of the casing string thereth... | 02/27/2007 |
| 7182157 | Enlarging well bores having tubing therein An underreamer for forming a cavity within a well bore includes a fluid motor having a first body and a second body arranged about a longitudinal axis. The first body is adapted to rotate about the longitudinal axis in relation to the second body when fluid is passe... | 02/27/2007 |
| 7182142 | Downhole apparatus Apparatus (10) for facilitating coupling and cementing of downhole tubulars (12, 28) comprises a tubing section (12, 10) for use in lining a bore. The tubing section has upper and lower ends and defines a tubing wall having cement outlets (20... | 02/27/2007 |
| 7182140 | Coiled tubing/top drive rig and method The rig for selectively inserting coiled tubing or a threaded tubular through a rig floor 13 and into a well includes a mast 15 extending upward from the rig floor and movable between a threaded tubular position and a coiled tubing position. A top driv... | 02/27/2007 |
| 7178788 | Even reeving system for a top drive earth drilling machine An earth drilling machine includes a mast, a crown block assembly mounted on the mast top for providing a drilling line having front sheaves, a fast line sheave mounted to a crown block sheave for reeving the drilling line, a drawworks drum, and a traveling frame as... | 02/20/2007 |
| 7178601 | Methods of and apparatus for casing a borehole Methods of and apparatus for drilling, casing and/or completing a borehole wherein one or more portions of the borehole are drilled into a formation at a single diameter along the entire length or depth of the or each portion of the borehole. An expandable tubular m... | 02/20/2007 |
| 7178682 | Traveling crane The invention pertains to a traveling crane consisting of a superstructure that can be turned about an upright axis and carries a crane jib with hoisting means, a truck with a tracklaying gear that carries the superstructure and a supporting device with several outr... | 02/20/2007 |
| 7174975 | Control systems and methods for active controlled bottomhole pressure systems Methods and control systems are provided for a wellbore drilling system having an active differential pressure device (APD device) in fluid communication with a returning fluid. The APD Device creates a differential pressure across the device, which reduces the pres... | 02/13/2007 |
| 7172025 | System for lining a section of a wellbore A system for lining a section of a wellbore with an expandable tubular element is provided. The system includes an elongate string extending into the wellbore, the string being provided with the tubular element in the unexpanded form thereof whereby the tubular elem... | 02/06/2007 |
| 7172027 | Expanding tubing A method of expanding tubing downhole comprises providing a section of expandable tubing of a first diameter, and axially compressing the tubing to induce buckling, such that the buckled portion describes a larger second diameter. The resulting diametric expansion m... | 02/06/2007 |
| 7172142 | Nozzles, and components thereof and methods for making the same Various nozzles, components of nozzles, and methods, materials and devices for making them are disclosed. ... | 02/06/2007 |
| 7168606 | Method of mitigating inner diameter reduction of welded joints Aspects of the present invention provide methods and apparatus for connecting two tubulars using a welding process with reduced inner diameter flash. The method includes connecting an end of a first expandable tubular to an end of a second expandable tubular using a... | 01/30/2007 |
| 7168497 | Downhole sealing A method of providing a downhole seal, such as a packer, in a drilled bore between inner tubing and outer tubing comprises: providing an intermediate tubing section defining a seal arrangement for engaging with the inner tubing; and radially plastically deforming th... | 01/30/2007 |
| 7169239 | Solid expandable tubular members formed from very low carbon steel and method A very low carbon steel alloy is provided for use in manufacturing tubular members such as oil country tubular goods. The tubular members may be radially expanded from at least twenty percent to forty percent. Sections or joints of casing formed from the steel alloy... | 01/30/2007 |
| 7165619 | Subsea intervention system, method and components thereof The subsea intervention system (SIM) includes a BOP module 10 and CT module 20. A tool positioning system 76 is used for positioning a selected subsea tool 22 stored within a rack 18 with a tool axis in line with the BOP axis, whil... | 01/23/2007 |
| 7165633 | Drilling fluid filter A drilling fluid filter for placement within a bore wall of a tubular drill string component comprises a perforated receptacle with an open end and a closed end. A hanger for engagement with the bore wall is mounted at the open end of the perforated receptacle. A ma... | 01/23/2007 |
| 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 |
| 7165634 | Method and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells The steel drill string attached to a drilling bit during typical rotary drilling operations used to drill oil and gas wells is used for a second purpose as the casing that is cemented in place during typical oil and gas well completions. Methods of operation are des... | 01/23/2007 |
