| Patents for E21B 7 - Special methods or apparatus for drilling (22,064) |
|---|
| 03/22/2012 | CA2811631A1 Reservoir navigation using magnetic field of dc currents |
| 03/22/2012 | CA2808871A1 Multi-operational multi-drilling system |
| 03/21/2012 | EP2430284A2 Pulling and compressing device |
| 03/21/2012 | EP2430277A1 Offset stochastic control |
| 03/21/2012 | CN102383830A Comprehensive outburst prevention method for outburst coal seam region |
| 03/21/2012 | CN102383793A Dual function machine for drilling and loading in tunnel |
| 03/21/2012 | CN102383738A Method and device for improving deep hole forming rate of bedding layer of coal mine |
| 03/21/2012 | CN102383731A High-pressure water jet flow pore-forming tool and device and poured pile construction method |
| 03/21/2012 | CN102383730A Skewing guide mechanism of borehole track control tool |
| 03/21/2012 | CN102383729A Slurry power bidirectional control hydraulic system for drilling and operation method thereof |
| 03/21/2012 | CN102383728A Coal mine rockburst defect segmentation and control method |
| 03/21/2012 | CN101392630B Drill and method for operating a drill |
| 03/21/2012 | CN101223334B Coiled tubing drilling system |
| 03/20/2012 | US8138124 Drilling fluid with circulation loss reducing additive package |
| 03/20/2012 | US8136611 Method and system for installing micropiles with a sonic drill |
| 03/20/2012 | US8136597 Method and system for the extinction of an underwater well for the extraction of hydrocarbons under uncontrolled fluid discharge conditions |
| 03/20/2012 | CA2635331C Method of automatically controlling the trajectory of a drilled well |
| 03/20/2012 | CA2562509C Telescopic feed beam for rock drill |
| 03/15/2012 | WO2012033872A2 Offshore thermal treatment of drill cuttings fed from a bulk transfer system |
| 03/15/2012 | WO2012031353A1 Downhole rotary drilling apparatus with formation-interfacing members and control system |
| 03/15/2012 | US20120061148 Downhole rotary drilling apparatus with formation-interfacing members and control system |
| 03/15/2012 | US20120061145 Method and apparatus for drilling large-diameter hole in ground |
| 03/15/2012 | US20120061144 Multi-ram drill rig and method of operation |
| 03/15/2012 | US20120061143 Guide Wire for Ranging and Subsurface Broadcast Telemetry |
| 03/15/2012 | US20120061142 Drilling apparatus |
| 03/15/2012 | US20120061087 Continuous flow drilling systems and methods |
| 03/15/2012 | DE102010045126A1 Earth probe assembly for earth probe-mounting device, has wall that is extended up to propulsion head arranged at one end of shaft, so as to form hollow cylinder between earth probe and shaft |
| 03/15/2012 | CA2810414A1 Offshore thermal treatment of drill cuttings fed from a bulk transfer system |
| 03/15/2012 | CA2810266A1 Downhole rotary drilling apparatus with formation-interfacing members and control system |
| 03/14/2012 | EP2428636A1 Articulated support for a hydraulic drill, hydraulic drill and method to actuate said articulated support of said hydraulic drill |
| 03/14/2012 | EP2427624A2 Milling system and method of milling |
| 03/14/2012 | EP2427623A1 Guiding device for rock drilling machine |
| 03/14/2012 | CN202165054U 颗粒或干粉状固体连续加料装置 Dry powdered solid particles or continuous charging device |
| 03/14/2012 | CN202165013U 变径桩挖钻机 Reducing pile drilling rig |
| 03/14/2012 | CN202165012U 一种钻探设备 A method of drilling equipment |
| 03/14/2012 | CN202165011U 组合式掏挖钻机 Combined dig drilling rig |
| 03/14/2012 | CN202165010U 一种煤矿钻机 One kind of mine rig |
| 03/14/2012 | CN202165009U 煤矿井下用跨皮带全液压坑道钻机 Coal mine with a belt across the full hydraulic drilling rig |
| 03/14/2012 | CN102373883A Diving rock inserting drill rig |
| 03/14/2012 | CN102373882A Separated self-propelled coal mine underground drill rig |
| 03/14/2012 | CN102373705A Pile sinking device and method for outer digging pre-stressed centrifugal pipe pile and square pile |
| 03/13/2012 | US8132631 Method of geothermal loop installation |
| 03/13/2012 | US8132623 Methods of using lost circulation compositions |
| 03/13/2012 | CA2644109C Latchable reaming bit |
| 03/13/2012 | CA2437513C Multilateral well completion |
| 03/13/2012 | CA2400093C Horizontal directional drilling in wells |
| 03/08/2012 | WO2012030926A2 Drill bit with adjustable side force |
| 03/08/2012 | WO2012030272A1 Hydraulic impact mechanism for use in equipment for treating rock and concrete |
| 03/08/2012 | WO2012030269A1 Oxygen lance igniter for igniting a thermal oxygen lance |
| 03/08/2012 | WO2012030220A1 Method for introducing a hollow elongated structure into a water bottom |
| 03/08/2012 | WO2012028974A2 System and method for conducting operations to subterranean formations |
| 03/08/2012 | WO2011146549A3 Method for drilling through nuisance hydrocarbon formations |
| 03/08/2012 | US20120055715 Methods of controlling hydraulic motors |
| 03/08/2012 | US20120055714 Under reamer |
| 03/08/2012 | US20120055713 Drill Bit with Adjustable Side Force |
| 03/08/2012 | US20120055712 Drilling apparatus |
| 03/08/2012 | US20120055678 Dual activity drilling ship |
| 03/08/2012 | US20120055677 Rotating flow control diverter with riser pipe adapter |
| 03/08/2012 | CA2809789A1 Hydraulic impact mechanism for use in equipment for treating rock and concrete |
| 03/07/2012 | EP2425085A2 Variable force/variable frequency sonic drill head |
| 03/07/2012 | EP2425084A2 Method and apparatus for applying vibrations during borehole operations |
| 03/07/2012 | CN202157748U 一种钻井用脉动冲击装置 One kind of drilling pulsating percussion device |
| 03/07/2012 | CN202157747U 直接泵钢颗粒浆的颗粒冲击钻井装置 Direct slurry pump steel particles particle impact drilling unit |
| 03/07/2012 | CN202157746U 简易路面钻孔机 Easy road Drills |
| 03/07/2012 | CN102369335A Drilling rig with hinged, retractable outriggers |
| 03/07/2012 | CN102367725A Large-aperture spiral deep hole drill |
| 03/07/2012 | CN101726330B Device for testing stable platform |
| 03/07/2012 | CN101358520B Thrust execution device of automatic vertical drilling |
| 03/06/2012 | US8127868 Apparatus and methods for drilling a wellbore using casing |
| 03/06/2012 | US8127865 Method of drilling from a shaft for underground recovery of hydrocarbons |
| 03/06/2012 | CA2435221C Method and system for enhanced access to a subterranean zone |
| 03/01/2012 | WO2012027637A1 Magnetic latching device for downhole wellbore intercept operations |
| 03/01/2012 | WO2012027105A1 Method of acoustic ranging |
| 03/01/2012 | WO2012003393A3 Hand-held water drill |
| 03/01/2012 | WO2011154919A3 A drill, related drilling arrangement and/or methods therefor |
| 03/01/2012 | WO2011137494A9 Undercutting tool |
| 03/01/2012 | US20120048622 Cutting element apparatuses, drill bits including same, methods of cutting, and methods of rotating a cutting element |
| 03/01/2012 | US20120048621 Method and apparatus for applying vibrations during borehole operations |
| 03/01/2012 | US20120048619 System, method and apparatus for drilling agitator |
| 03/01/2012 | DE102010035402A1 Method for determination and display of diameters of boreholes along longitudinal axis of borehole, involves aligning horizontally borehole, which has entry point and exit point |
| 03/01/2012 | DE102008028997B4 Bohrverfahren und Bohrgerät zur Herstellung eines Bohrlochs in Erde und Gestein Drilling method and drill for the preparation of a borehole in soil and rock |
| 03/01/2012 | CA2809264A1 Magnetic latching device for downhole wellbore intercept operations |
| 03/01/2012 | CA2809173A1 Method of acoustic ranging |
| 02/29/2012 | EP2422143A1 Subterranean continuous loop heat exchanger, method of manufacture and method to heat, cool or store energy with same |
| 02/29/2012 | EP2422038A2 Drill bits and tools for subterranean drilling, methods of manufacturing such drill bits and tools and methods of off center drilling |
| 02/29/2012 | DE202009018579U1 Vorrichtung zum Erweitern einer Pilotbohrung im Erdreich Apparatus for expanding a pilot hole in the ground |
| 02/29/2012 | CN202152642U 坑道钻机及其钻进状态调整装置 Drilling rig and drilling state adjusting device |
| 02/29/2012 | CN202152636U 适用于气体反循环钻井的鹅颈管 Suitable for reverse circulation drilling gas gooseneck |
| 02/29/2012 | CN202152635U 一种钻柱轴向振荡工具 One kind of drill string axial oscillation Tools |
| 02/29/2012 | CN202152634U 频率可调脉冲射流提速装置 Adjustable frequency pulse jet speed device |
| 02/29/2012 | CN202152633U 一种履带式自行全液压深孔潜孔钻机 Tracked self-propelled hydraulic deep submersible drilling rig |
| 02/29/2012 | CN202152632U 一种钻探机构 A method of drilling agency |
| 02/29/2012 | CN102365416A Expandable multi-flute reamer with tapered pin |
| 02/29/2012 | CN102364029A Integrated window-opening side-drilling tool |
| 02/29/2012 | CN102364028A Multifunctional full-hydraulic drilling machine |
| 02/29/2012 | CN101871222B Method for controlling motion of mast oil cylinder of revolving drilling rig and system |
| 02/28/2012 | US8122977 Cutting device with multiple cutting structures |
| 02/28/2012 | US8122975 Annulus pressure control drilling systems and methods |
| 02/28/2012 | US8122974 Apparatus for drilling machine alignment |
| 02/28/2012 | US8122958 Method and device for transferring signals within a well |