| Patents for E21B 7 - Special methods or apparatus for drilling (22,064) |
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| 03/12/2009 | US20090065258 Method and apparatus for directional drilling with variable drill string rotation |
| 03/12/2009 | US20090065257 Apparatus and methods for utilizing a downhole deployment valve |
| 03/12/2009 | US20090065256 Method and Rock Drilling Rig for Hole Drilling |
| 03/12/2009 | US20090065255 Method and system for installing geothermal transfer apparatuses with a sonic drill |
| 03/12/2009 | US20090065224 Rock drilling tool |
| 03/12/2009 | DE102007043045A1 Mobile drilling rig for constructing drill in ground, has mobile base, at which mast is erected from transport position in operative position, and mast is divided into two mast sections, which are fastened to one another in folding manner |
| 03/12/2009 | CA2697838A1 Method and apparatus for rotary mining |
| 03/12/2009 | CA2696917A1 Drill in sand control liner |
| 03/12/2009 | CA2695443A1 Directional drilling control using modulated bit rotation |
| 03/11/2009 | EP2034129A2 Method of consolidation, impermeabilisation and drainage of underground works by guided perforations |
| 03/11/2009 | EP2032838A1 Impulse rotor generator |
| 03/11/2009 | CN201206571Y Complex control system for main hoist and power head of rotary drill rig |
| 03/11/2009 | CN201206425Y Anti-oblique make-up of string suitable for bad ground |
| 03/11/2009 | CN101382043A Combined drill for drilling with casing |
| 03/11/2009 | CN101382042A Ocean floating drill platform string heave compensation device |
| 03/11/2009 | CN101382041A Dredger type drill |
| 03/11/2009 | CN101382040A Major diameter drill while drilling and casing |
| 03/11/2009 | CN101382039A Full-hydraulic drive device while drilling of major diameter drill while drilling and casing |
| 03/11/2009 | CN100467825C Assembly and disassembly of gas extraction, drainage and discharge driller and displacement auxiliary device thereof |
| 03/10/2009 | US7500477 Method and apparatus for moving a mass |
| 03/10/2009 | CA2639418A1 Pump assembly |
| 03/05/2009 | WO2009029821A2 Apparatus and method for estimating orientation of a liner during drilling of a wellbore |
| 03/05/2009 | WO2009029816A2 Apparatus and method for estimating orientation of a liner during drilling of a wellbore |
| 03/05/2009 | WO2009029800A1 Apparatus and method for drilling wellbores that utilize a detachable reamer |
| 03/05/2009 | WO2009029359A2 Tool face sensor method |
| 03/05/2009 | WO2009029269A2 Devices and methods for dynamic boring procedure reconfiguration |
| 03/05/2009 | WO2009028979A1 Dual bha drilling system |
| 03/05/2009 | WO2009028964A1 Magnetic hammer |
| 03/05/2009 | WO2009027728A2 Whipstock assembly |
| 03/05/2009 | US20090057018 Directional drilling control using modulated bit rotation |
| 03/05/2009 | US20090057017 Multiple Pulsejet Boring Device |
| 03/05/2009 | US20090057015 Apparatus And Methods For Drilling Wellbores That Utilize A Detachable Reamer |
| 03/05/2009 | US20090057014 Method of using a Drill In Sand Control Liner |
| 03/05/2009 | US20090057013 Method and apparatus for rotary mining |
| 03/05/2009 | US20090057012 Heat exchanger system and well drilling equipment comprising same |
| 03/05/2009 | US20090057011 Drilling device |
| 03/05/2009 | DE102007018788B4 Bohrgerät zum Einbringen von Bohrungen in den Erdboden Drill for drilling holes in the ground |
| 03/05/2009 | CA2697985A1 Devices and methods for dynamic boring procedure reconfiguration |
| 03/05/2009 | CA2697912A1 Dual bha drilling system |
| 03/05/2009 | CA2692769A1 Magnetic hammer |
| 03/05/2009 | CA2639343A1 Method and system for governing block speed |
| 03/04/2009 | EP2029947A1 A connecting device and a tool |
| 03/04/2009 | EP2029854A2 Downhole formation testing sensors |
| 03/04/2009 | EP2029853A1 Well drilling machine with new drill pipe loader |
| 03/04/2009 | CN201202402Y Rapid drilling and positioning machine tool |
| 03/04/2009 | CN201202401Y Non- guy rope well repairing machine |
| 03/03/2009 | US7497279 Jack element adapted to rotate independent of a drill bit |
| 03/03/2009 | US7497277 Clamping device for axially harmonically oscillating components |
| 03/03/2009 | US7497266 Arrangement and method for controlling and regulating bottom hole pressure when drilling deepwater offshore wells |
| 02/26/2009 | WO2009026449A1 Excavation apparatuses and methods |
| 02/26/2009 | WO2009025732A1 Control system for blowout preventer stack |
| 02/26/2009 | WO2009025574A1 Well construction using small laterals |
| 02/26/2009 | WO2009009650A3 Apparatus and methods for drilling and lining a wellbore |
| 02/26/2009 | US20090050375 Steerable drill bit arrangement |
| 02/26/2009 | US20090050371 Pulsed Electric Rock Drilling Apparatus with Non-Rotating Bit and Directional Control |
| 02/26/2009 | US20090050370 Steering Device For Downhole Tools |
| 02/26/2009 | US20090050367 Cryogenic Pulsejet |
| 02/26/2009 | CA2696015A1 Well construction using small laterals |
| 02/25/2009 | CN201198757Y Early-warning system for avoiding collision of oil gas well drilling neighboring wellbores |
| 02/25/2009 | CN201198743Y Non-excavating drill power head floating mechanism |
| 02/25/2009 | CN201198735Y Self-power generation walking type pile machine |
| 02/24/2009 | US7495445 Flux orientation locating in a drilling system |
| 02/24/2009 | US7493966 System and method for drilling using a modulated jet stream |
| 02/24/2009 | US7493965 Apparatuses and methods relating to cooling a subterranean drill bit and/or at least one cutting element during use |
| 02/19/2009 | WO2009023222A2 Buoyancy tensioning systems for offshore marine risers and methods of use |
| 02/19/2009 | WO2009023042A1 Well servicing modular combination unit |
| 02/19/2009 | WO2009022146A1 Motor bit system |
| 02/19/2009 | WO2009022128A1 Method and system for steering a directional drilling system |
| 02/19/2009 | WO2009022117A1 Stochastic bit noise control |
| 02/19/2009 | WO2009022116A1 Drill bit gauge pad control |
| 02/19/2009 | WO2009022115A1 System and method for controlling a drilling system for drilling a borehole in an earth formation |
| 02/19/2009 | WO2009022114A1 System and method for directionally drilling a borehole with a rotary drilling system |
| 02/19/2009 | WO2008148514A3 Method and device for verifying the casing of a pipeline when the pipeline is inserted into a liquid-filled borehole |
| 02/19/2009 | US20090044977 System and method for controlling a drilling system for drilling a borehole in an earth formation |
| 02/19/2009 | US20090044975 Subterranean material dispensing apparatus and method |
| 02/19/2009 | CA2694977A1 Stochastic bit noise control |
| 02/19/2009 | CA2694868A1 Method and system for steering a directional drilling system |
| 02/19/2009 | CA2694858A1 System and method for controlling a drilling system for drilling a borehole in an earth formation |
| 02/19/2009 | CA2694857A1 System and method for directionally drilling a borehole with a rotary drilling system |
| 02/19/2009 | CA2684598A1 Well servicing modular combination unit |
| 02/18/2009 | EP2025860A1 Deep drilling device and method for erecting a deep drilling device |
| 02/18/2009 | EP2025859A1 Deep drilling device and method for mounting a deep drilling device |
| 02/18/2009 | EP1573170B1 Method and system for circulating fluid in a well system |
| 02/18/2009 | CN201196091Y Lateral pressure apparatus |
| 02/18/2009 | CN201196025Y Slurry injection system of horizontal orienting drill |
| 02/18/2009 | CN201196024Y Integrally movable on-land oil-well rig |
| 02/18/2009 | CN201196023Y Screw pile machine |
| 02/18/2009 | CN101368472A Method for accurately positioning and orienting drill hole of top arch |
| 02/17/2009 | US7490680 Process and system for drilling and lining a bore hole |
| 02/17/2009 | US7490673 Universal connection interface for subsea completion systems |
| 02/17/2009 | US7490664 Drilling, perforating and formation analysis |
| 02/17/2009 | CA2534912C Pipe burster with spherical bursting member |
| 02/12/2009 | WO2008151128A3 Dual density mud return system |
| 02/12/2009 | US20090038856 Injection System And Method |
| 02/12/2009 | US20090038854 System and method for drilling wellbores |
| 02/12/2009 | US20090038847 User interface for rock drilling rig |
| 02/12/2009 | CA2695593A1 System and method for stress field based wellbore steering |
| 02/11/2009 | EP2022932A1 Pull head |
| 02/11/2009 | EP2021575A1 Procedure and device for the optimal utilization of carbon resources such as oil fields, oil shales, oil sands, coal, and co2 |
| 02/11/2009 | CN201193479Y High power crawler tractor hoist |