| Patents for E21B 7 - Special methods or apparatus for drilling (22,064) |
|---|
| 08/02/2011 | CA2516074C Expandable whipstock anchor assembly |
| 07/28/2011 | WO2011091368A2 System and method for performing an adaptive drilling operation |
| 07/28/2011 | WO2011091055A1 Control system for drilling operations |
| 07/28/2011 | WO2011066302A3 Drilling assembly with a steering unit integrated in drilling motor |
| 07/28/2011 | US20110180328 Speed control baffle for use in a hydraulic-rotary drilling system |
| 07/28/2011 | US20110180327 Mulitmodal Geosteering Systems and Methods |
| 07/28/2011 | US20110180326 Apparatus and method for cutting a wellbore |
| 07/28/2011 | US20110180261 Method of removing cutters |
| 07/28/2011 | DE102010006824B3 Verfahren zur grabenlosen Verlegung von Rohrleitungen Method for grave loose laying of pipelines |
| 07/27/2011 | EP2347085A2 Methods and apparatus for mechanical and thermal drilling |
| 07/27/2011 | EP2347084A2 Methods and apparatus for wellbore enhancement |
| 07/27/2011 | EP2347083A2 Methods and apparatus for thermal drilling |
| 07/27/2011 | EP2347082A2 Methods and apparatus for thermal drilling |
| 07/27/2011 | CN201908572U Modular combined whipstock |
| 07/27/2011 | CN201908571U Foldable rear pedal for gadding car |
| 07/27/2011 | CN201908570U Air feeding device of air circuit system of workover rig |
| 07/27/2011 | CN201908569U Variable control device of electric drive energy storage type workover rig |
| 07/27/2011 | CN201908565U Base plate anchor rope drilling machine for coal mine tunnel |
| 07/27/2011 | CN102135011A Device for pumping coal bed gas through underground radial drilling |
| 07/27/2011 | CN102134978A Drill hole wall protecting and leakage plugging method or slope guide deviation drilling method and used device thereof |
| 07/27/2011 | CN102134968A Drilling system and drilling equipment |
| 07/27/2011 | CN102134967A Construction method of consolidating horizontal directional drilling hole by grouting coal seam baseboard |
| 07/27/2011 | CN102134966A Cutting drilling machine |
| 07/27/2011 | CN101315020B Extendable excavating screw with hydraulic excavating blades |
| 07/27/2011 | CN101040098B Housing arrangement |
| 07/26/2011 | US7984771 Methods and apparatus for attenuating drillstring vibrations |
| 07/26/2011 | US7984769 Method and a device for directional control of a rock drilling machine |
| 07/26/2011 | US7984764 Accumulator for subsea equipment |
| 07/26/2011 | US7984763 Full bore lined wellbores |
| 07/26/2011 | CA2493447C Handheld tool for breaking up rock |
| 07/22/2011 | CA2733339A1 Wellbore obstruction-clearing tool and method of use |
| 07/21/2011 | WO2011088478A1 Bearing contact pressure reduction in well tools |
| 07/21/2011 | WO2011087721A1 Well tools operable via thermal expansion resulting from reactive materials |
| 07/21/2011 | WO2011038866A3 Boring element of a ground boring device |
| 07/21/2011 | US20110174542 Tubular member adaptor apparatus |
| 07/21/2011 | US20110174537 Method and System for Forming a Non-Circular Borehole |
| 07/21/2011 | DE19930504B4 Verfahren zum Auffahren von Strecken in stark wasserführenden Schichten und dafür geeignete Bohreinrichtung A method for tailgating of routes in highly water-bearing strata and suitable for drilling device |
| 07/21/2011 | DE102010005264A1 Meisselloses Bohrsystem Meisselloses drilling system |
| 07/21/2011 | CA2787043A1 Bearing contact pressure reduction in well tools |
| 07/20/2011 | EP2345764A1 Telescopic leader mast |
| 07/20/2011 | CN201902173U Hole guard sleeve pipe for underwater drilling |
| 07/20/2011 | CN201902168U Pipe roofing drilling machine with prepositive and postpositive synchronous double-turntable mechanism |
| 07/20/2011 | CN201902167U Pipe shed drilling rig with front lifting mechanism and rear lifting mechanism |
| 07/20/2011 | CN201902166U Multidimensional hydraulic drill carriage provided with floating rotation device |
| 07/20/2011 | CN201902165U Medium-length hole mining drill carriage based on scooptram base plate |
| 07/20/2011 | CN201902164U Gas-water separating device |
| 07/20/2011 | CN102128047A Gas-slag separation and recovering system for drilling construction |
| 07/20/2011 | CN102128010A Oil/electric integrated power wheel-type workover rig |
| 07/20/2011 | CN101338651B Pre-mixed abrasive high pressure water-jet system rotary pipe joint structure |
| 07/19/2011 | US7980328 Rotary steerable devices and methods of use |
| 07/19/2011 | US7980307 Downhole window finder system |
| 07/19/2011 | US7979991 Vegetation cutting device |
| 07/19/2011 | CA2565864C Method and apparatus for completing lateral channels from an existing oil or gas well |
| 07/14/2011 | WO2011085296A2 Rotary steerable tool employing a timed connection |
| 07/14/2011 | WO2011085286A2 Downhole downlinking system employing a differential pressure transducer |
| 07/14/2011 | WO2011085059A2 Rotating drilling tool |
| 07/14/2011 | WO2011084566A2 T-frac system run in system |
| 07/14/2011 | WO2011084294A1 Hose tensioner for a rock drill system |
| 07/14/2011 | WO2011084233A2 Apparatus and method for reaming a wellbore during the installation of a tubular string |
| 07/14/2011 | WO2011046859A3 Casing rotary steerable system for drilling |
| 07/14/2011 | WO2011041532A3 Earth-boring tools having expandable members and related methods |
| 07/14/2011 | WO2011031696A3 Drill bits and methods of drilling curved boreholes |
| 07/14/2011 | WO2010148222A8 Application of degradable fibers in invert emulsion fluids for kill pills |
| 07/14/2011 | US20110168449 Methods for drilling, reaming and consolidating a subterranean formation |
| 07/14/2011 | US20110168447 Reaming tool |
| 07/14/2011 | US20110168445 Downhole Downlinking System Employing a Differential Pressure Transducer |
| 07/14/2011 | US20110168444 Rotary Steerable Tool Employing a Timed Connection |
| 07/14/2011 | US20110168443 Bitless Drilling System |
| 07/14/2011 | CA2846749A1 Rotating continuous flow sub |
| 07/14/2011 | CA2792145A1 Rotating drilling tool |
| 07/14/2011 | CA2786430A1 Rotary steerable tool employing a timed connection |
| 07/14/2011 | CA2782535A1 Hose tensioner for a rock drill system |
| 07/13/2011 | EP2342416A2 Sonic drill head |
| 07/13/2011 | EP2342415A2 Method and device for fusion drilling |
| 07/13/2011 | EP2342384A1 Deep sea mining riser and lift system |
| 07/13/2011 | CN201896589U Water stop device and sleeve device |
| 07/13/2011 | CN201896586U Anchor head pressure drilling device and ground anchor vehicle with anchor head pressure drilling device |
| 07/13/2011 | CN201896585U Pipe-roof drilling rig with synchronous-traversing rotary table |
| 07/13/2011 | CN201896584U Well drilling corrector |
| 07/13/2011 | CN201896579U Reciprocating outburst prevention drilling rig |
| 07/13/2011 | CN201896578U Outburst prevention drilling rig |
| 07/13/2011 | CN102124180A Dual bha drilling system |
| 07/13/2011 | CN102121394A Method for uncovering outburst coal seam by using pseudo lithosphere on laneway |
| 07/13/2011 | CN102121364A Well structure of pressure-releasing coal bed gas ground extraction well and arrangement method thereof |
| 07/12/2011 | US7976242 Drill head for a microtunnelling apparatus |
| 07/12/2011 | US7975783 Reaming and stabilization tool and method for its use in a borehole |
| 07/12/2011 | US7975778 Borehole drilling control system, method and apparatus |
| 07/12/2011 | US7975770 Dual-BOP and common riser system |
| 07/12/2011 | CA2680869C Em-guided drilling relative to an existing borehole |
| 07/11/2011 | CA2689949A1 Down hole apparatus for generating a pulsing action |
| 07/07/2011 | WO2011081673A1 Varied rpm drill bit steering |
| 07/07/2011 | WO2011081621A1 Timed impact drill bit steering |
| 07/07/2011 | WO2011080393A1 Mining vehicle and method for its energy supply |
| 07/07/2011 | WO2011080392A1 Mining vehicle and method for its energy supply |
| 07/07/2011 | WO2011080391A1 Rock drilling device |
| 07/07/2011 | WO2011080292A1 Downhole guiding tool |
| 07/07/2011 | WO2011041521A3 Earth-boring tools having expandable cutting structures and methods of using such earth-boring tools |
| 07/07/2011 | US20110162892 Sonic drill bits and sonic drilling systems |
| 07/07/2011 | US20110162891 Rotating Drilling Tool |
| 07/07/2011 | US20110162890 Method and apparatus for hydraulic steering of downhole rotary drilling systems |