| Patents for E21B 7 - Special methods or apparatus for drilling (22,064) |
|---|
| 02/01/2012 | EP1236005B2 Cable tensioning device for bursting/flaring devices |
| 02/01/2012 | CN202131986U 打桩机 Hammers |
| 02/01/2012 | CN202131976U 全液压齿轮齿条钻机 Hydraulic rack and pinion rig |
| 02/01/2012 | CN102341560A Expandable stabilizer with roller reamer elements |
| 02/01/2012 | CN102337844A Directional drilling signal transmission drill pipe |
| 02/01/2012 | CN102337795A Drilling device and drilling method |
| 02/01/2012 | CN102337146A Decoking system of coking tank |
| 01/31/2012 | US8105984 Reduced abrasion drilling fluid |
| 01/31/2012 | US8104548 Shape memory alloy actuated steerable drilling tool |
| 01/31/2012 | CA2543909C High temperature electronic devices |
| 01/31/2012 | CA2504804C Apparatus and method for opening and closing lateral boreholes |
| 01/31/2012 | CA2503516C Method and system for circulating fluid in a well system |
| 01/26/2012 | WO2012012754A1 Components and motors for downhole tools and methods of applying hardfacing to surfaces thereof |
| 01/26/2012 | WO2012012632A1 Rotary coil tubing drilling and completion technology |
| 01/26/2012 | WO2012012624A1 Titled bit rotary steerable drilling system |
| 01/26/2012 | WO2012012076A1 Continously adjusting resultant force in an excavating assembly |
| 01/26/2012 | WO2012009948A1 Hydraulic rock drilling machine for excavator |
| 01/26/2012 | WO2012009788A1 Method and apparatus for directional drilling |
| 01/26/2012 | WO2012009759A1 Hydraulic mining system for tabular orebodies utilising directional drilling techniques |
| 01/26/2012 | WO2011084566A3 T-frac system run in system |
| 01/26/2012 | US20120018228 Method and Apparatus for Transforming a Pressure Drop into a Continuous Fluid Flow |
| 01/26/2012 | US20120018226 Method and biodegradable water based thinner composition for drilling subterranean boreholes with aqueous based drilling fluid |
| 01/26/2012 | US20120018225 Tilted bit rotary steerable drilling system |
| 01/26/2012 | US20120018224 Compliantly coupled gauge pad system |
| 01/26/2012 | US20120018223 Polycrystalline diamond cutting element and method of using same |
| 01/26/2012 | US20120018221 Drill String Tooling Joint |
| 01/26/2012 | US20120018219 Method and steering assembly for drilling a borehole in an earth formation |
| 01/26/2012 | US20120018218 Method and apparatus for directional drilling |
| 01/26/2012 | US20120018166 Vessel For Operating On Underwater Wells And Working Methods Of Said Vessel |
| 01/26/2012 | CA2806231A1 Components and motors for downhole tools and methods of applying hardfacing to surfaces thereof |
| 01/26/2012 | CA2806084A1 Hydraulic mining system for tabular orebodies utilising directional drilling techniques |
| 01/26/2012 | CA2804999A1 Rotary coil tubing drilling and completion technology |
| 01/26/2012 | CA2803652A1 Method and apparatus for directional drilling |
| 01/25/2012 | EP2408992A2 Method and device for drilling shafts in ground layers consisting of rock, clay and/or related materials |
| 01/25/2012 | CN202125254U Frame building block combination type anchoring drilling machine |
| 01/25/2012 | CN202125247U Fully-electric composite continuous pipe drilling device |
| 01/25/2012 | CN202125246U Convenient drilling machine moving device |
| 01/25/2012 | CN202125245U Support structure of machine frame oil cylinder of rotary drilling machine |
| 01/25/2012 | CN102330539A Pulsed jet underground flow self-improving device for petroleum and natural gas drilling |
| 01/25/2012 | CN102330538A Bottom hole assembly for prebuckling dynamical pendulum of single stabilitzer |
| 01/25/2012 | CN102330536A Lifting type diving rotary drilling rig with turbine pump |
| 01/25/2012 | CN102330426A Transversely rotating type deep mixing pile machine |
| 01/25/2012 | CN102328602A Special seat for horizontal directional drilling machine |
| 01/24/2012 | CA2659541C Impulse rotor generator |
| 01/24/2012 | CA2639470C Drill bit |
| 01/24/2012 | CA2587884C Modular drilling apparatus with power and/or data transmission |
| 01/24/2012 | CA2548431C Tubular stabbing protector and method |
| 01/23/2012 | CA2747042A1 Apparatus and method for abrasive perforating and cleanout using a multi-cycle open/close valve |
| 01/19/2012 | WO2012009375A1 Electromagnetic orientation system for deep wells |
| 01/19/2012 | WO2011149363A4 Enhanced vibrational or hammering apparatus |
| 01/19/2012 | WO2011149197A3 Variable excavation hammer for expanding the leading end of a pile |
| 01/19/2012 | WO2011146549A9 Method for drilling through nuisance hydrocarbon formations |
| 01/19/2012 | WO2011123611A3 Downhole tool having a friction stirred surface region |
| 01/19/2012 | WO2011106514A3 Cleaning apparatus and method for a material dryer |
| 01/19/2012 | US20120012400 Head for injecting consolidating pressurised fluid mixtures into the ground |
| 01/19/2012 | US20120012396 Steerable drilling system |
| 01/19/2012 | US20120012395 Steering head |
| 01/19/2012 | US20120012394 Air Percussion Drilling In Horizontal Wells |
| 01/19/2012 | US20120012391 Drilling device for executing diaphragm walls and method thereof |
| 01/19/2012 | US20120012390 Drilling device and drilling method |
| 01/19/2012 | US20120012354 Apparatus for driving piles or drilling holes |
| 01/19/2012 | CA2805197A1 Electromagnetic orientation system for deep wells |
| 01/19/2012 | CA2804896A1 Two-port percussion mole |
| 01/18/2012 | EP2407630A2 Pipe umbrella drilling method |
| 01/18/2012 | EP2407629A1 Drilling device and drilling method |
| 01/18/2012 | CN202117705U Water cutting device for converting high pressure and low pressure |
| 01/18/2012 | CN202117670U Self-traveling lifting fully-hydraulic coal auger |
| 01/18/2012 | CN202117570U Plug-in type high-pressure cutting drill bit |
| 01/18/2012 | CN202117567U Self-cleaning reaming device while drilling |
| 01/18/2012 | CN202117566U Vibratory boosting drilling machine |
| 01/18/2012 | CN202117565U Pulse sprinkler |
| 01/18/2012 | CN202117564U Underground traveling type slurry pumping construction device for small-sized construction passageway |
| 01/18/2012 | CN202117563U Drilled pile drilling rectifying and guiding device and pile drill stem with same |
| 01/18/2012 | CN202117562U Whipstock |
| 01/18/2012 | CN202117561U Annular raise boring machine |
| 01/18/2012 | CN202117560U Firedamp drainage drilling machine capable of quick positioning |
| 01/18/2012 | CN202117044U Vibration-free transverse compaction hole expanding device |
| 01/18/2012 | CN102325963A Drilling scorecard |
| 01/18/2012 | CN102322256A Horizontal well landing geosteering method |
| 01/18/2012 | CN102322252A Coalbed methane multi-lateral horizontal well system and construction method thereof |
| 01/18/2012 | CN102322219A Submarine jet drilling vehicle |
| 01/18/2012 | CN102322218A Three-hinge point side swing mechanism of drill carriage connecting rod |
| 01/18/2012 | CN102322217A Larger-diameter bored pile stratum section secondary pore-forming method |
| 01/18/2012 | CN102322216A Laser drilling device |
| 01/18/2012 | CN102322214A Multifunctional drifting machine |
| 01/18/2012 | CN102134967B Construction method of consolidating horizontal directional drilling hole by grouting coal seam baseboard |
| 01/18/2012 | CN102116140B Construction method for enhancing extraction effect of ground coal bed gas |
| 01/12/2012 | WO2012003560A1 Laser drilling device |
| 01/12/2012 | WO2011148285A3 Mine dewatering system and method |
| 01/12/2012 | WO2011130659A4 Unconditionally stable floating offshore platforms |
| 01/12/2012 | DE102010036323A1 Verfahren zum Verhindern des Austritts von umweltschädlichen Stoffen bei Unterwasserbohrungen und Rohrstrang hierfür A method for preventing the escape of polluting substances in underwater drilling and pipe string for this |
| 01/11/2012 | EP2404035A1 A method for mounting a tube in the ground |
| 01/11/2012 | EP2084332B1 System for mounting a pile driver |
| 01/11/2012 | CN202110206U Electric shock alarm circuit and drilling machine comprising same |
| 01/11/2012 | CN202108440U Underground positioning device used in oil drilling |
| 01/11/2012 | CN202108422U Lengthening bar and long-spiral drilling machine using same |
| 01/11/2012 | CN202108417U Pneumatic drill rig |
| 01/11/2012 | CN202108416U Mechanism for reducing load born by engine body |
| 01/11/2012 | CN202108415U Hydraulic power water tap for a gear rack drilling machine |
| 01/11/2012 | CN102312655A Radial hydraulic jetting drilling technology |