| Patents for E21B 7 - Special methods or apparatus for drilling (22,064) |
|---|
| 12/12/2012 | CN202596571U Large-displacement deep drilling friction reducing device |
| 12/12/2012 | CN202594665U Multifunctional engineering truck |
| 12/12/2012 | CN102817557A Construction device and method for aligning a mast |
| 12/12/2012 | CN102165119B Deep sea mining riser and lift system |
| 12/11/2012 | US8327952 Self-contained system for drilling a drainhole |
| 12/11/2012 | US8327951 Drill bit having functional articulation to drill boreholes in earth formations in all directions |
| 12/11/2012 | US8327944 Whipstock attachment to a fixed cutter drilling or milling bit |
| 12/11/2012 | US8327943 Wellhead isolation protection sleeve |
| 12/11/2012 | US8327681 Wellbore manufacturing processes for in situ heat treatment processes |
| 12/11/2012 | CA2607466C Ac powered service rig |
| 12/08/2012 | CA2742660A1 Method and apparatus for running casing in a wellbore with a fluid driven rotatable shoe |
| 12/06/2012 | WO2012166561A2 Compositions, methods, apparatus, and systems for incorporating bio-derived materials in drilling and hydraulic fracturing |
| 12/06/2012 | WO2012166400A2 Wellbore junction completion with fluid loss control |
| 12/06/2012 | WO2012166396A1 Variably configurable wellbore junction assembly |
| 12/06/2012 | WO2012164258A1 Improved antenna deployment |
| 12/06/2012 | WO2012162833A1 Rotary steerable tool |
| 12/06/2012 | WO2012162800A1 Drilling rig system with self-elevating drill floor |
| 12/06/2012 | WO2012162744A1 Apparatus for drilling |
| 12/06/2012 | WO2012074928A3 Bottom preventer for use in a drilling system |
| 12/06/2012 | WO2011123438A8 Method for maintaining wellbore pressure |
| 12/06/2012 | US20120305316 Earth drilling apparatus and method |
| 12/06/2012 | US20120305261 drilling installation |
| 12/06/2012 | CA2837592A1 A method of conditioning a wall of a bore section |
| 12/06/2012 | CA2836924A1 Wellbore junction completion with fluid loss control |
| 12/06/2012 | CA2836918A1 Variably configurable wellbore junction assembly |
| 12/06/2012 | CA2835249A1 Rotary steerable tool |
| 12/06/2012 | CA2834709A1 Drilling rig system with self-elevating drill floor |
| 12/05/2012 | EP2529074A1 Device and method for drilling with continous tool rotation and continous drilling fluid supply |
| 12/05/2012 | CN202578605U Striking-while-drilling jar knocker |
| 12/05/2012 | CN202578539U Novel mobile positioning device of drilling machine |
| 12/05/2012 | CN202578529U Novel overall translation device of drilling machine |
| 12/05/2012 | CN202578511U Coaxial automatic water feeder for drill |
| 12/05/2012 | CN202578510U Horizontal sampling drilling machine of deep sea polymetallic sulfide mining chimney |
| 12/05/2012 | CN202578509U Inclined and straight well driller |
| 12/05/2012 | CN202578508U Guide mechanism of well drilling tool |
| 12/05/2012 | CN202578507U Shallow hole drilling machine |
| 12/05/2012 | CN202578506U Traveling mechanism of horizontal drill guide frame |
| 12/05/2012 | CN202578505U Novel transmission device for truck-mounted well drilling and workover rig |
| 12/05/2012 | CN202578504U Pressurized working vehicle |
| 12/05/2012 | CN202578503U Two-stage type hydraulic machine erecting mechanism for raise boring machine |
| 12/05/2012 | CN202578502U Electricity power source crawler-type rotary drilling machine |
| 12/05/2012 | CN202578501U Conveniently transported mine cutting drill with lengthened drill arm |
| 12/05/2012 | CN202578500U Mine working rock drilling blast hole trolley |
| 12/05/2012 | CN102812201A Injection Drill Bit |
| 12/05/2012 | CN102808581A Guide device for downing casing pipe into herringbone well |
| 12/05/2012 | CN102808580A Laser directional drilling tool for coal-bed-methane level development hole and drilling method using same |
| 12/05/2012 | CN102808579A Underground drilling equipment |
| 12/05/2012 | CN102168558B Self-walking lifting full-hydraulic auger coal mining machine |
| 12/05/2012 | CN102116168B Gas drainage system and method for hyposmosis soft coal seams |
| 12/05/2012 | CN101571043B Salt strata drilling and channeling method based on high-speed water jet technology |
| 12/05/2012 | CN101421483B Electromagnetically determining the relative location of a drill bit using a solenoid source installed on a steel casing |
| 12/04/2012 | US8322461 Drilling apparatus and method |
| 12/04/2012 | US8322460 Dual density mud return system |
| 12/04/2012 | US8322458 Drilling rig and drilling method |
| 12/04/2012 | US8322435 Pressure driven system |
| 11/29/2012 | WO2012162537A2 Jet arrangement on an expandable downhole tool |
| 11/29/2012 | WO2012162408A1 Mud motor assembly |
| 11/29/2012 | WO2012162294A2 Perforating string with magnetohydrodynamic initiation transfer |
| 11/29/2012 | WO2012161595A1 Downhole sinusoidal vibrational apparatus |
| 11/29/2012 | WO2012135555A3 System and method for reducing pressure fluctuations in an oilfield pumping system |
| 11/29/2012 | WO2012047847A8 Status indicators for use in earth-boring tools having expandable members and methods of making and using such status indicators and earth-boring tools |
| 11/29/2012 | WO2011124961A3 Dual drilling activity drilling ship |
| 11/29/2012 | US20120298423 Jet arrangement on an expandable downhole tool |
| 11/29/2012 | US20120298422 Corrodible triggering elements for use with subterranean borehole tools having expandable members and related methods |
| 11/29/2012 | US20120298420 Methods For Characterization Of Formations, Navigating Drill Paths, And Placing Wells In Earth Boreholes |
| 11/29/2012 | US20120298419 Underwater drilling arrangement and method for introducing a foundation element into a bed of a body of water |
| 11/29/2012 | CA2837082A1 Mud motor assembly |
| 11/29/2012 | CA2836699A1 Downhole sinusoidal vibrational apparatus |
| 11/28/2012 | EP2527539A1 Submarine drilling assembly and method for inserting a foundation element into the soil of a body of water |
| 11/28/2012 | CN202560098U Plumb shaft deflection control drilling device for oil field |
| 11/28/2012 | CN202560097U Side slope anchoring drill construction device |
| 11/28/2012 | CN202560096U Telescopic boom open rock drilling wagon with drill rod changing device |
| 11/28/2012 | CN202560095U Airborne outburst prevention drill device |
| 11/28/2012 | CN102803643A Device and method for drilling with continous tool rotation and continous drilling fluid supply |
| 11/28/2012 | CN102797419A Underwater drilling arrangement and method for introducing a foundation element into a bed of a body of water |
| 11/28/2012 | CN102797418A Multidirectional drilling device used during mine anchor rod support |
| 11/28/2012 | CN102797417A Oil cylinder support structure with H-shaped frame |
| 11/28/2012 | CN102162242B Rotary squeeze-expansion supporting disk machine |
| 11/28/2012 | CN102003145B Hole driven type horizontal directional drilling reverse circulation hole dilating drill |
| 11/28/2012 | CN101936142B Aerated underbalanced drilling method for coal-bed gas |
| 11/28/2012 | CN101595272B Microtunnelling system and apparatus |
| 11/28/2012 | CN101532391B In-hole drilling tool integrating drilling, slotting and punching coal seam and using method thereof |
| 11/28/2012 | CN101490358B Resonance enhanced drilling method and apparatus |
| 11/27/2012 | US8316966 Method and system for accessing subterranean deposits from the surface and tools therefor |
| 11/27/2012 | US8316963 Cuttings processing system |
| 11/27/2012 | CA2563758C Underreaming and stabilising tool to be put into service in a drilling hole and method for its use |
| 11/22/2012 | WO2012158575A2 Vortex controlled variable flow resistance device and related tools and methods |
| 11/22/2012 | WO2012158155A1 Mobile pressure optimization unit for drilling operations |
| 11/22/2012 | WO2012158144A1 Apparatus and method for frilling a well |
| 11/22/2012 | WO2012115803A3 Improved method of replacing an underground pipe |
| 11/22/2012 | US20120292115 Drill Bits and Methods of Drilling Curved Boreholes |
| 11/22/2012 | US20120292113 Vortex Controlled Variable Flow Resistance Device and Related Tools and Methods |
| 11/22/2012 | US20120292112 Apparatus for drilling faster, deeper and wider well bore |
| 11/22/2012 | US20120292107 Offshore universal riser system |
| 11/22/2012 | US20120292106 Offshore universal riser system |
| 11/22/2012 | US20120292043 Downhole tools |
| 11/22/2012 | US20120292042 Ram tensioner system |
| 11/22/2012 | US20120292015 Vortex Controlled Variable Flow Resistance Device and Related Tools and Methods |
| 11/22/2012 | CA2833767A1 Vortex controlled variable flow resistance device and related tools and methods |
| 11/22/2012 | CA2831722A1 Apparatus and method for drilling a well |