| Patents for E21B 7 - Special methods or apparatus for drilling (22,064) |
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| 03/23/2011 | CN201771524U Hydraulic airborne water air drill anchor |
| 03/23/2011 | CN201771458U Apparatus for expanding well and salvaging |
| 03/23/2011 | CN201771427U Outburst elimination rotary-cutting drilling device for 'three soft' coal seams |
| 03/23/2011 | CN201771426U Self-propelled remote control rotary drilling rig |
| 03/23/2011 | CN201771425U Connecting component for upright pillar and lifting cylinder of mining deep-hole drill carriage |
| 03/23/2011 | CN201771424U Chain plate connected double-layer multi-roll type drilling machine moving device |
| 03/23/2011 | CN101990592A Pnuematic drifter with replaceable foot pieces |
| 03/23/2011 | CN101463709B Torsional impact drilling tool |
| 03/22/2011 | US7909118 Apparatus and method for positioning extended lateral channel well stimulation equipment |
| 03/22/2011 | US7909117 Downhole adjustable bent-angle mechanism for use with a motor for directional drilling |
| 03/22/2011 | US7909116 Impact excavation system and method with improved nozzle |
| 03/22/2011 | US7909109 Anchoring device for a wellbore tool |
| 03/22/2011 | US7909103 Retrievable tubing hanger installed below tree |
| 03/22/2011 | CA2703694C Coupling apparatus |
| 03/22/2011 | CA2564357C Apparatus and method for modified horizontal directional drilling assembly |
| 03/22/2011 | CA2522019C Nutating single cone drill bit |
| 03/22/2011 | CA2513400C Short radius whipstock system |
| 03/22/2011 | CA2508852C Drilling method |
| 03/17/2011 | WO2011031696A2 Drill bits and methods of drilling curved boreholes |
| 03/17/2011 | WO2011030167A1 Method, apparatus and system for attaching an anchor member to a floor of a body of water |
| 03/17/2011 | WO2011029992A1 Rock drilling unit, feed beam, and method for damping vibration |
| 03/17/2011 | WO2010144583A3 Contaminant excluding junction and method |
| 03/17/2011 | US20110061939 Offshore Casing Drilling Method |
| 03/17/2011 | US20110061938 Directional well drilling |
| 03/17/2011 | US20110061937 Well construction using small laterals |
| 03/17/2011 | US20110061936 Methods and apparatus for drilling directional wells by percussion method |
| 03/17/2011 | US20110061935 Drilling wells in compartmentalized reservoirs |
| 03/17/2011 | US20110061876 Method and Apparatus for Cementing a Liner in a Borehole Using a Tubular Member Having an Obstruction |
| 03/17/2011 | US20110061872 Systems and methods for circulating out a well bore influx in a dual gradient environment |
| 03/17/2011 | DE102009038385A1 Rammbohrvorrichtung mit einem pneumatischen Antrieb und einer hydraulischen Umsteuerung der Bewegungsrichtung Rammbohrvorrichtung with a pneumatic actuator and a hydraulic reversing the direction of movement |
| 03/17/2011 | CA2776610A1 Drill bits and methods of drilling curved boreholes |
| 03/17/2011 | CA2774439A1 Method, apparatus and system for attaching an anchor member to a floor of a body of water |
| 03/17/2011 | CA2772587A1 Rock drilling unit, feed beam, and method for damping vibration |
| 03/16/2011 | EP2294276A1 Pneumatic drifter with replaceable foot pieces |
| 03/16/2011 | CN201763282U Wedge-type clamp |
| 03/16/2011 | CN201763241U Bushing & drilling-in dual purpose drilling machine |
| 03/16/2011 | CN201763240U Push-pull clutch of horizontal directional drilling machine |
| 03/16/2011 | CN201762745U Excavator type multifunctional machine |
| 03/16/2011 | CN101382042B Ocean floating drill platform string heave compensation device |
| 03/16/2011 | CN101338650B Pre-mixed abrasive high pressure water-jet boring device |
| 03/16/2011 | CN101331054B Anti-sloshing device in moon pool |
| 03/16/2011 | CN101025075B Automatic inclination-proof drilling well apparatus |
| 03/15/2011 | US7905298 Systems and methods employing a variable angle guide for a drill |
| 03/15/2011 | US7905287 Methods of using a polymeric precipitate to reduce the loss of fluid to a subterranean formation |
| 03/15/2011 | US7905279 Combination whipstock and seal bore diverter system |
| 03/15/2011 | CA2546394C Flow operated orienter |
| 03/15/2011 | CA2523725C Steerable drilling apparatus having a differential displacement side-force exerting mechanism |
| 03/15/2011 | CA2522993C Well string assembly |
| 03/14/2011 | CA2677138A1 Downhole flow control apparatus, super-insulated tubulars and surface tools for producing heavy oil by steam injection methods from multi-lateral wells located in cold environments |
| 03/10/2011 | WO2011026238A1 Method of drilling and running casing in large diameter wellbore |
| 03/10/2011 | WO2010102741A3 Method and system for inserting a tube into a borehole in the soil |
| 03/10/2011 | US20110056752 Methods and aqueous based wellbore fluids for reducing wellbore fluid loss and filtrate loss |
| 03/10/2011 | US20110056751 Ultra-hard matrix reamer elements and methods |
| 03/10/2011 | US20110056750 Automatic control of oscillatory penetration apparatus |
| 03/10/2011 | US20110056748 Wellbore fluids containing sized clay material and methods of use thereof |
| 03/10/2011 | US20110056696 Subsea drilling |
| 03/10/2011 | US20110056695 Valves, bottom hole assemblies, and method of selectively actuating a motor |
| 03/10/2011 | US20110056683 Wellbore fluid comprising a base fluid and a particulate bridging agent |
| 03/10/2011 | DE102009005514B4 Vorrichtung für eine Rohrtour eines geologischen Bohrlochs, Rohrtour, Verfahren zum Betreiben einer geologischen Bohranlage sowie Verfahren zum Herstellen einer Rohrtour für ein geologisches Bohrloch Device for a pipe string of a geological borehole casing string, method of operating a geological drilling rig and method for manufacturing a pipe string for a geological borehole |
| 03/10/2011 | CA2772836A1 Method of drilling and running casing in large diameter wellbore |
| 03/09/2011 | EP2292960A1 Drilling device for laying pipes in the ground |
| 03/09/2011 | CN201756973U Crawler walking anchor conveyor |
| 03/09/2011 | CN201756932U Vice roller mechanism of a driller |
| 03/09/2011 | CN201756915U High pressure water jet rotation blocking removing yield-increasing injection-increasing apparatus |
| 03/09/2011 | CN201756914U Dragable type lateral side drill integral inclination guidance device |
| 03/09/2011 | CN201756913U Workover rig |
| 03/09/2011 | CN201756911U Floating type power head core axle mechanism of a horizontal directional driller |
| 03/09/2011 | CN101984191A High pressure jet grouting pile driving machine |
| 03/08/2011 | US7900720 Downhole drive shaft connection |
| 03/08/2011 | US7900717 Expandable reamers for earth boring applications |
| 03/08/2011 | US7900716 Vibratory unit for drilling systems |
| 03/08/2011 | CA2499759C Reverse circulation directional and horizontal drilling using concentric drill string |
| 03/08/2011 | CA2416216C Well-log presentation, software and method thereof |
| 03/03/2011 | WO2011026035A2 Rotation inhibiting apparatus |
| 03/03/2011 | WO2011023028A1 High and low dual-speed pressurizing system for rotary drilling rig |
| 03/03/2011 | WO2010129468A3 Milling system and method of milling |
| 03/03/2011 | WO2010124194A3 Rotary blasthole drilling rig flexible jaw pipe positioner |
| 03/03/2011 | US20110048806 Apparatus and Methods for Controlling Bottomhole Assembly Temperature During a Pause in Drilling Boreholes |
| 03/03/2011 | US20110048805 Drilling apparatus and method for working the ground |
| 03/03/2011 | US20110048804 Drilling device and drilling method |
| 03/03/2011 | US20110048803 Drilling cuttings mobilizer |
| 03/03/2011 | US20110048802 Method and Apparatus for Controlling Bottomhole Temperature in Deviated Wells |
| 03/03/2011 | DE10258963B4 Vorrichtung zum Spülbohren von Bohrlöchern in Böden Apparatus for directional drilling of wells in soils |
| 03/03/2011 | DE102009038383A1 Rammbohrvorrichtung Rammbohrvorrichtung |
| 03/01/2011 | US7896108 Dual string orbital drilling system |
| 03/01/2011 | US7896107 System for tracking and maintaining on on-grade horizontal borehole |
| 03/01/2011 | US7896104 Device and method for explosive drilling |
| 03/01/2011 | US7896096 Hydraulic drilling machine for working in a small space |
| 03/01/2011 | US7895938 Apparatus and method for steam disinfection of liquid dispensing machine |
| 03/01/2011 | CA2570225C Drilling rig and vibration dampening support frame |
| 03/01/2011 | CA2514476C Method of forming a window in a casing |
| 02/24/2011 | WO2010126990A3 Variable force/variable frequency sonic drill head |
| 02/24/2011 | US20110044762 Device and method for moving a working means in the ground |
| 02/24/2011 | US20110042144 Steerable drilling system |
| 02/24/2011 | US20110042142 Spindrill |
| 02/24/2011 | US20110042141 Remediation of Relative Permeability Blocking Using Electro-osmosis |
| 02/24/2011 | US20110042095 Riser clamp |
| 02/24/2011 | DE102009038058A1 Vorrichtung und Verfahren zum Bewegen eines Arbeitsmittels im Erdreich Apparatus and method for moving a working fluid in the ground |
| 02/23/2011 | EP2286054A1 Casing exit joint with easily milled, low density barrier |
| 02/23/2011 | CN101981269A Drilling unit, method for slot drilling and slotting device |