| Patents for E21B 7 - Special methods or apparatus for drilling (22,064) |
|---|
| 01/05/2011 | CN101936135A Underground water-hammer type pressure pulse generating tool |
| 01/05/2011 | CN101936134A Selecting optimal wellbore trajectory while drilling |
| 01/05/2011 | CN101936133A Drilling machine for construction of cast-in-situ bored pile |
| 01/05/2011 | CN101934991A Lifting mechanism and rotary drilling rig |
| 01/04/2011 | US7861804 Sleeve arrangement |
| 01/04/2011 | US7861802 Flexible directional drilling apparatus and method |
| 01/04/2011 | US7861789 Metal-to-metal seal for bridging hanger or tieback connection |
| 01/04/2011 | US7861779 Method and device for establishing an underground well |
| 01/04/2011 | US7861778 Pressure orienting swivel arrangement and method |
| 01/04/2011 | CA2634861C Combined three-in-one fracturing system |
| 01/04/2011 | CA2568119C Rotary steerable tool including drill string rotation measurement apparatus |
| 01/04/2011 | CA2501255C Engine speed limiter for a hoist |
| 01/04/2011 | CA2467377C Collapsible expansion cone |
| 12/30/2010 | US20100326733 Vibrating downhole tool |
| 12/30/2010 | US20100326732 Apparatus and method for making boreholes in the ground, the cross sections of which boreholes partially intersect |
| 12/30/2010 | US20100326731 Stabilizing downhole tool |
| 12/30/2010 | US20100326730 Sealing System and Bi-Directional Thrust Bearing Arrangement for a Downhole Motor |
| 12/30/2010 | US20100326729 Casing bits, drilling assemblies, and methods for use in forming wellbores with expandable casing |
| 12/30/2010 | US20100326728 Mineral-based drilling fluid and drilling method |
| 12/30/2010 | DE102009030865A1 Führungsvorrichtung für eine Bohrvorrichtung Guiding device for a drilling |
| 12/29/2010 | WO2010151796A2 Stabilizing downhole tool |
| 12/29/2010 | WO2010150185A1 Muffler for pneumatic rock drill |
| 12/29/2010 | WO2010149238A1 Guide device for a drilling device |
| 12/29/2010 | EP2265792A1 Joint arrangement for coupling of a drill shoe |
| 12/29/2010 | EP2265791A1 Device and method of lining a wellbore |
| 12/29/2010 | EP1784555B1 Method and system for installing and maintaining a pipeline while minimizing associated ground disturbance |
| 12/29/2010 | EP1611311B1 System and method for treating drilling mud in oil and gas well drilling applications |
| 12/29/2010 | CN201687391U Underground water-hammer type pressure pulse generating tool |
| 12/29/2010 | CN201687390U Pressure compensator of guide drill tool hydraulic system |
| 12/29/2010 | CN201687389U Whole moving device of self-propelled drilling machine |
| 12/29/2010 | CN101929310A Active alternating magnetic field information-based method for guiding and positioning well drilling track |
| 12/29/2010 | CN101929309A Gas lift reverse circulation drilling process |
| 12/28/2010 | US7857075 Wellbore drilling system |
| 12/23/2010 | WO2010148226A2 Application of degradable fibers in invert emulsion fluids for fluid loss control |
| 12/23/2010 | WO2010148222A2 Application of degradable fibers in invert emulsion fluids for kill pills |
| 12/23/2010 | WO2010125405A3 Method and apparatus for applying vibrations during borehole operations |
| 12/23/2010 | US20100319997 Whipstock attachment to a fixed cutter drilling or milling bit |
| 12/23/2010 | US20100319996 Milling cap for a polycrystalline diamond compact cutter |
| 12/23/2010 | US20100319995 Self-circulating drill bit |
| 12/23/2010 | US20100319994 Resonance enhanced drilling: method and apparatus |
| 12/23/2010 | US20100319993 Downhole tool leg retention methods and apparatus |
| 12/23/2010 | US20100319935 Method and device for a running tool |
| 12/23/2010 | DE102009025084A1 Ramm- und Bohrgerät mit klappbarer Umlenkvorrichtung Piling and drilling with folding deflection |
| 12/23/2010 | CA2765192A1 Application of degradable fibers in invert emulsion fluids for kill pills |
| 12/22/2010 | EP2262975A2 Shaker deck adjustment apparatus |
| 12/22/2010 | CN201679445U Continuous pipe type radial well drilling device |
| 12/22/2010 | CN201679444U Low torque reamer |
| 12/22/2010 | CN201679443U Wheeled electrical pile driver |
| 12/22/2010 | CN201679442U Planetary structure for reverse torque of balance drilling equipment in drilling |
| 12/21/2010 | US7855168 contacting filter cake with composition comprising a carrier fluid, a surfactant, a fluorine source, and an organic stabilizer, wherein the organic stabilizer minimizes precipitation of calcium fluoride, and allowing the filter cake particles to be dissolved by the composition |
| 12/21/2010 | US7854276 Methods, systems, and apparatus for production of hydrocarbons from a subterranean formation |
| 12/21/2010 | US7854264 Volumetric compensating annular bellows |
| 12/21/2010 | CA2480473C Method and device for deviated coring and/or drilling |
| 12/16/2010 | WO2010144583A2 Contaminant excluding junction and method |
| 12/16/2010 | WO2010099465A3 Downhole vibration apparatus and method |
| 12/16/2010 | US20100314174 Flow diverter for drilling |
| 12/16/2010 | US20100314173 Methods of drilling with a downhole drilling machine |
| 12/16/2010 | US20100314172 Shaft catch |
| 12/16/2010 | US20100314171 Method of excavation of oil and gas-producting wells |
| 12/16/2010 | US20100314170 Method of excavation of oil and gas-producting wells |
| 12/16/2010 | US20100314168 Flywheel-based energy storage on a heave-compensating drawworks |
| 12/16/2010 | US20100314107 Method and device for transferring signals within a well |
| 12/16/2010 | US20100314101 Pipe anchoring and expanding unit for producing a slim well and method for producing a slim wel using the same |
| 12/15/2010 | EP2261457A2 Method and apparatus for drilling a borehole into a subsea abnormal pore pressure environment |
| 12/15/2010 | EP2261456A2 Method and apparatus for drilling a borehole into a subsea abnormal pore pressure environment |
| 12/15/2010 | CN201672049U Handle locking mechanism for auxiliary box |
| 12/15/2010 | CN201671545U Mine downhole drilling casing running device |
| 12/15/2010 | CN201671544U Self-assembling electric workover rig |
| 12/15/2010 | CN201671543U Double-motor driving mechanism for mining deep-hole drill carriage |
| 12/15/2010 | CN201671542U Mine deep-hole drill carriage work station linkage mechanism |
| 12/15/2010 | CN201671541U Mine deep-hole drilling car power head connecting structure |
| 12/15/2010 | CN201671540U Mining deep hole drill rig |
| 12/15/2010 | CN201671539U Water driller |
| 12/15/2010 | CN201671538U Anchor drill |
| 12/15/2010 | CN201671537U Reciprocating rail trolley |
| 12/15/2010 | CN201670657U Crown block rotary positioning automatic locking device |
| 12/15/2010 | CN101918672A 钻井系统 Drilling System |
| 12/15/2010 | CN101915251A Telescopic hydraulic cylinder |
| 12/15/2010 | CN101915061A Alternating magnetic field guiding device |
| 12/15/2010 | CN101915060A Light-duty rotary drilling rig |
| 12/15/2010 | CN101915059A Process method for well completion at equal borehole diameter |
| 12/15/2010 | CA2707236A1 Formation coring apparatus and methods |
| 12/14/2010 | US7849940 Drill bit having the ability to drill vertically and laterally |
| 12/14/2010 | US7849937 Method and device for producing a cased string bore |
| 12/14/2010 | US7849936 Steerable rotary directional drilling tool for drilling boreholes |
| 12/14/2010 | US7849935 System and method for drilling wellbores |
| 12/14/2010 | US7849924 Method and apparatus for moving a high pressure fluid aperture in a well bore servicing tool |
| 12/14/2010 | US7849599 Imputing strength gradient in pressure vessels |
| 12/14/2010 | CA2597368C Passive vertical drilling motor stabilization |
| 12/10/2010 | CA2668469A1 A method of fabricating a drive shaft for earth drilling motor and a drive shaft fabricated in accordance with the method |
| 12/09/2010 | WO2010141028A1 Guide tool for guiding downhole tools through wellbore restrictions |
| 12/09/2010 | US20100307830 Method and system for particle jet boring |
| 12/09/2010 | US20100307829 Cutting elements including cutting tables with shaped faces configured to provide continuous effective positive back rake angles, drill bits so equipped and methods of drilling |
| 12/09/2010 | US20100307828 Systems and methods for canceling noise and/or echoes in borehole communication |
| 12/09/2010 | US20100307825 Excavation device and profile analyses of the excavation itself and associated method |
| 12/09/2010 | US20100307736 Permanent Bypass Whipstock Assembly For Drilling and Completing a Sidetrack Well and Preserving Access to the Original Wellbore |
| 12/09/2010 | US20100307401 Vessels with roll damping mechanism |
| 12/08/2010 | EP2258919A2 Rod changer for a rock drill |
| 12/08/2010 | EP2257687A1 Drilling unit, method for slot drilling and slotting device |
| 12/08/2010 | CN201666444U Back gear automatic lubricating device of rotary drilling rig |