| Patents for E21B 7 - Special methods or apparatus for drilling (22,064) |
|---|
| 06/16/2011 | US20110139513 Eccentric steering device and methods of directional drilling |
| 06/16/2011 | US20110139512 Actuators, actuatable joints, and methods of directional drilling |
| 06/16/2011 | US20110139511 Method for introducing a vertical shaft and shaft driving machine |
| 06/16/2011 | US20110139508 Gauge pads, cutters, rotary components, and methods for directional drilling |
| 06/16/2011 | US20110139506 Pressure and flow control in drilling operations |
| 06/16/2011 | CA2783113A1 Telescopic unit with dissolvable barrier |
| 06/15/2011 | EP2332822A2 Drillship or semi-submersible and multi-activity drilling assembly |
| 06/15/2011 | EP2097610B1 Expandable reamers for earth-boring applications and methods of using the same |
| 06/15/2011 | CN201865610U Light core drilling rig |
| 06/15/2011 | CN201865578U Gas volume adjusting device for gas drilling |
| 06/15/2011 | CN201865577U Recoverable orbital wedge deflection tool |
| 06/15/2011 | CN201865576U Hydraulic self-locking solid inclined guiding apparatus |
| 06/15/2011 | CN201865575U Drilling rig for exploration of water and gas |
| 06/15/2011 | CN201865574U Integral core drilling machine of multifunctional self-walking type tower crane |
| 06/15/2011 | CN201865573U Crawler drill for belt-span drilling |
| 06/15/2011 | CN201865572U Novel rotary drilling rig |
| 06/15/2011 | CN201865571U Small-sized rotary drilling rig |
| 06/15/2011 | CN201865570U Anchor rod gang drill device |
| 06/15/2011 | CN201865569U Dewatering apparatus used for air drilling well |
| 06/15/2011 | CN201865564U On-board rotary drilling rig |
| 06/15/2011 | CN201865134U Salt lake drilling grooving machine |
| 06/15/2011 | CN102094668A High-pressure hydraulic drilling, pressure releasing and protrusion removing method for upper drainage roadway |
| 06/15/2011 | CN102094580A Coal engineering hole directional drilling method |
| 06/15/2011 | CN102094579A Full-hydraulic tire rock drilling anchoring drill carriage |
| 06/15/2011 | CN102094578A Drilling mechanism |
| 06/15/2011 | CN101280682B Complete hydraulic self-drilling type side pressure equipment |
| 06/15/2011 | CN101133228B Damping device for an output shaft in a gearbox |
| 06/14/2011 | US7959378 Base for a drilling device |
| 06/14/2011 | US7958950 Reamer and methods for directional drilling |
| 06/14/2011 | US7958948 Method and system for return of drilling fluid |
| 06/14/2011 | CA2545377C Downhole motor with a continuous conductive path |
| 06/10/2011 | CA2688702A1 Interlocking engagement mechanism for an adjustable bent housing |
| 06/10/2011 | CA2688186A1 Mill-through tailpipe liner exit and method of use thereof |
| 06/09/2011 | WO2011069167A2 Geotechnical horizontal directional drilling |
| 06/09/2011 | WO2011067360A1 Device for removing or replacing cables |
| 06/09/2011 | WO2011026035A3 Rotation inhibiting apparatus |
| 06/09/2011 | US20110132662 Phase wellbore steering |
| 06/09/2011 | US20110132615 Offshore drilling and production systems and methods |
| 06/09/2011 | CA2782426A1 Geotechnical horizontal directional drilling |
| 06/08/2011 | EP2329095A2 Pulsed electric rock drilling apparatus with non-rotating bit and directional control |
| 06/08/2011 | EP2329094A1 Feed mechanism for drilling systems |
| 06/08/2011 | EP2329093A1 External water delivery system for rock drills |
| 06/08/2011 | EP2329092A2 Modular rotary drill head |
| 06/08/2011 | CN201857900U Anti-settling baseplate of mud line of water-proof guide pipe for offshore drilling |
| 06/08/2011 | CN1782320B Method and system for precise drilling guidance of twin wells |
| 06/08/2011 | CN1748073B Downhole tool |
| 06/08/2011 | CN102086766A Drilling machine tool special for opencast mining rotary drill rig and using method thereof |
| 06/08/2011 | CN102086755A Continuous oil pipe-based guide high-pressure jet drilling system |
| 06/08/2011 | CN102086754A Deepwater drilling method |
| 06/08/2011 | CN101660309B Construction method of multi-drill high-pressure jet agitation based anti-seepage reinforcing equipment |
| 06/08/2011 | CN101413379B Dual-channel double-face emptying flow injection element |
| 06/08/2011 | CN101403281B Tail pipe well drilling and well completion technique |
| 06/08/2011 | CN101086198B Method of creating a borehole in an earth formation |
| 06/07/2011 | US7954561 Vertical direction adjustment tool for downhole drilling apparatus |
| 06/07/2011 | US7954558 Devices and methods for power control in horizontal directional drilling |
| 06/07/2011 | CA2662440C Method and apparatus for lateral drilling through a subterranean formation |
| 06/07/2011 | CA2605260C Lockable swivel apparatus and method |
| 06/03/2011 | WO2011066302A2 Drilling assembly with a steering unit integrated in drilling motor |
| 06/03/2011 | WO2011065962A1 Tool positioning and latching system |
| 06/02/2011 | US20110127086 Helical drilling apparatus, systems, and methods |
| 06/02/2011 | US20110127044 Remotely controlled apparatus for downhole applications and methods of operation |
| 06/02/2011 | US20110127040 Assembly and method for subsea well drilling and intervention |
| 06/01/2011 | EP2326786A1 An apparatus and method for modifying the sidewalls of a borehole |
| 06/01/2011 | EP1649130B1 Tool for excavating an object |
| 06/01/2011 | DE202008018059U1 Bohranlage zum Erstellen von Tiefbohrungen Drilling rig for creating deep wells |
| 06/01/2011 | DE10113561B4 Vorschubvorrichtung für eine Ramm- und/oder Bohrvorrichtung Feeding device for driving and / or drilling device |
| 06/01/2011 | CN201851095U Self-rotation jet drilling device |
| 06/01/2011 | CN201851013U Location slips type solid oblique guide device |
| 06/01/2011 | CN201851012U Rotary guide drilling tool |
| 06/01/2011 | CN201851011U Device for mining coal bed gas by drilling well in zero radius and in radial direction |
| 06/01/2011 | CN201851010U Rotary drilling rig |
| 06/01/2011 | CN201851002U PLC (Programmable Logic Controller) controlled frequency conversion pile driver |
| 06/01/2011 | CN201850569U Engineering machinery for digging and modifying |
| 06/01/2011 | CN201850548U High-pressure rotary spraying pile driver |
| 06/01/2011 | CN1985066B Apparatus and method for modified horizontal directional drilling assembly |
| 06/01/2011 | CN1791731B Systems and methods using a continuously variable transmission to control one or more system components |
| 06/01/2011 | CN102084085A Wellbore system |
| 06/01/2011 | CN102084081A Hydraulic drilling method with penetration control |
| 06/01/2011 | CN102080530A Method for constructing horizontal coal bed gas well and vertical drainage and mining well |
| 06/01/2011 | CN102080529A Coal-bed gas thermal cavity completion method |
| 06/01/2011 | CN102080526A Method for extracting gas from bedding level fractured well of ground coal seam roof |
| 06/01/2011 | CN102080525A High-pressure gas injection hole-drilling pressure-releasing outburst prevention method |
| 06/01/2011 | CN102080519A Method for extracting coal bed gas by negative pressure on ground through gas-coal simultaneous extraction |
| 06/01/2011 | CN102080518A Method for extracting gas from coal seam roof complex branched well |
| 06/01/2011 | CN102080503A Continuous directional coring and deflecting machine tool with dual tubes for outer guiding and inner drilling and deflecting method thereof |
| 06/01/2011 | CN102080502A Sediment pulling device of non-excavated guide driller |
| 06/01/2011 | CN102080501A Mineral deep hole drilling carriage unit |
| 06/01/2011 | CN102080500A High-powered crawler-type well dredger roller bracket assembly |
| 06/01/2011 | CN102080499A Automatically moving drilling device and construction method thereof |
| 06/01/2011 | CN102080376A Built-in composite anchor rod construction method and composite anchor rod drilling tool used by same |
| 06/01/2011 | CN101725342B Hollow cable type directed water conveying device |
| 06/01/2011 | CN101333909B Dash-proof distant control boring machine and its control method |
| 06/01/2011 | CN101205796B Device for drilling big borehole with small drill head |
| 05/31/2011 | US7950473 Non-azimuthal and azimuthal formation evaluation measurement in a slowly rotating housing |
| 05/31/2011 | US7950470 Mechanical tee post driver |
| 05/31/2011 | US7950464 Multi-well controller |
| 05/31/2011 | CA2441738C Method of hydraulically actuating and mechanically activating a downhole mechanical apparatus |
| 05/26/2011 | WO2011062588A1 Method and apparatus for forming a borehole |
| 05/26/2011 | WO2010127233A4 Casing bits, drilling assemblies, and methods for use in forming wellbores with expandable casing |
| 05/26/2011 | US20110120778 Drilling tool |