| Patents for E21B 7 - Special methods or apparatus for drilling (22,064) |
|---|
| 03/13/2014 | US20140069722 Hammer bit |
| 03/13/2014 | US20140069720 Tachometer for a rotating control device |
| 03/12/2014 | EP2705207A2 Liner cementation process and system |
| 03/12/2014 | CN203476219U Pneumatic frame column type drilling machine without guide rails |
| 03/12/2014 | CN203476207U No lifting to drill pipe Spindle-type drill |
| 03/12/2014 | CN203476206U Horizontal directional crossing equipment adopting slurry injection technology |
| 03/12/2014 | CN203476205U Power drilling soil taking device |
| 03/12/2014 | CN203476204U Coal bed gas down hole and mine field coal rock plunger piston drilling machine |
| 03/12/2014 | CN103628859A Automatic drilling machine controller and method for performing pile foundation construction by applying automatic drilling machine controller |
| 03/12/2014 | CN103628830A Mechanical-hydraulic type variable-diameter stabilizer |
| 03/12/2014 | CN103628819A Near-bit torsion impactor |
| 03/12/2014 | CN103628818A Well drilling top drive running casing tool driving head |
| 03/12/2014 | CN103628817A Full-hydraulic crawler-type towing equipment |
| 03/12/2014 | CN103628816A Seismic attribute guidance horizontal-well-steering method and device thereof |
| 03/12/2014 | CN102272405B Ball piston steering devices and methods of use |
| 03/11/2014 | US8668028 Underwater drilling arrangement and method for introducing a tubular foundation element into the bed of a body of water |
| 03/11/2014 | US8668017 Variable buoyancy subsea running tool |
| 03/11/2014 | CA2733339C Wellbore obstruction-clearing tool and method of use |
| 03/06/2014 | WO2014036092A1 Method and system for recovering, and displacing fluid from, a pipe |
| 03/06/2014 | WO2014033462A2 Downhole tool with rotational drive coupling and associated methods |
| 03/06/2014 | WO2014032847A1 Boring apparatus and method for producing a bore |
| 03/06/2014 | US20140060935 Apparatus and method for drilling a well |
| 03/06/2014 | US20140060934 Cutting insert for a rock drill bit |
| 03/06/2014 | US20140060932 Media pressure cavitation protection system for rock drills |
| 03/06/2014 | US20140060931 Systems and Methods for Automatic Drilling of Wellbores |
| 03/06/2014 | US20140060930 High power laser downhole cutting tools and systems |
| 03/06/2014 | DE102012108213A1 Drilling device for introduction of direction-controlled hole into floor for introduction of pipelines buried underground, has front screw portion supported within tube such that portion is pivotable by change in slope of hinged support |
| 03/05/2014 | EP2703596A1 Drilling device and method for producing a borehole |
| 03/05/2014 | EP2702222A2 Offshore fluid transfer systems and methods |
| 03/05/2014 | CN203463011U Reamer |
| 03/05/2014 | CN203463010U Hydraulic reamer capable of reaming hole while drilling and compulsively taking blades back |
| 03/05/2014 | CN203463009U Working condition detection system of adjustable stabilizer |
| 03/05/2014 | CN203463008U Power head structure for horizontal directional drilling machine |
| 03/05/2014 | CN203463007U Adjustable-angle engineering geological drill machine |
| 03/05/2014 | CN203463006U Runner structure directing tool |
| 03/05/2014 | CN203463005U Rotary drilling machine |
| 03/05/2014 | CN103615196A Plunger type significantly-variable-diameter reaming-while-drilling tool |
| 03/05/2014 | CN103615195A Method for connection between horizontal well and vertical well of tunnel |
| 03/05/2014 | CN102084081B Hydraulic drilling method with penetration control |
| 03/05/2014 | CN101680268B Method of quarrying dimensional stone, and line drilling apparatus |
| 03/04/2014 | US8662206 Apparatus and method for making boreholes in the ground, the cross sections of which boreholes partially intersect |
| 03/04/2014 | US8662203 Method and device for creating a deep borehole |
| 03/04/2014 | US8662198 Apparatus for driving piles or drilling holes |
| 03/04/2014 | US8662183 Blow out preventer |
| 03/04/2014 | US8662181 Stabplate connections |
| 03/04/2014 | US8662160 Systems and conveyance structures for high power long distance laser transmission |
| 03/04/2014 | US8661743 Brace support mast assembly for a transportable rig |
| 02/28/2014 | CA2826874A1 Systems and methods for automatic drilling of wellbores |
| 02/27/2014 | WO2014031123A1 Methods for retrieval and replacement of subsea production and processing equipment |
| 02/27/2014 | WO2014031116A1 Freeing pipe stuck in a subterranean well |
| 02/27/2014 | WO2014031098A1 Slow drilling assembly and method |
| 02/27/2014 | WO2014030050A1 Hydraulic cavitation generator |
| 02/27/2014 | WO2014029985A2 Articulating component of a downhole assembly, downhole steering assembly, and method of operating a downhole tool |
| 02/27/2014 | WO2013130750A3 Silent entry torching and oxygen delivery system and configuration |
| 02/27/2014 | WO2013040561A3 An apparatus and system to drill a bore using a laser |
| 02/27/2014 | US20140054092 Rotary jet bit for jet drilling and cleaning |
| 02/27/2014 | US20140054090 Mechanical force generator for a downhole excitation apparatus |
| 02/27/2014 | US20140054088 Steering head |
| 02/27/2014 | US20140054087 Drill With Remotely Controlled Operating Modes and System and Method for Providing the Same |
| 02/27/2014 | US20140054036 Apparatus and Method for Drilling a Wellbore, Setting a Liner and Cementing the Wellbore During a Single Trip |
| 02/26/2014 | EP2700889A1 End piece for the pipe pair of a geothermal heat probe |
| 02/26/2014 | EP2700784A1 Hydro cavitation generator |
| 02/26/2014 | EP2699759A2 Galvanically isolated exit joint for well junction |
| 02/26/2014 | EP2699751A2 Well system with lateral main bore and strategically disposed lateral bores and method of forming |
| 02/26/2014 | CN203452700U Gas-liquid mixing tool for gas drilling |
| 02/26/2014 | CN203452670U Fluid power variable-diameter stabilizer with telescopic supporting head |
| 02/26/2014 | CN203452659U Rotary drilling jig |
| 02/26/2014 | CN203452645U Casing driving head suitable for casing drilling |
| 02/26/2014 | CN203452644U Well drilling device combining heat energy and mechanical energy |
| 02/26/2014 | CN203452643U Anchor rod drill carriage for coal mines |
| 02/26/2014 | CN103603672A Hydraulic tunneling jumbo |
| 02/26/2014 | CN103603601A Inclined and vertical well drilling machine |
| 02/26/2014 | CN103603600A Three-dimensional positioning controllable excavating device and three-dimensional positioning controllable excavating method for simulating karst caves in model test |
| 02/26/2014 | CN103603599A Crawler type engineering driller |
| 02/26/2014 | CN103603598A Train type stepping device |
| 02/26/2014 | CN103603597A Traveling-type down-the-hole drill |
| 02/26/2014 | CN103603596A Lifting-rotation-platform crawler drill for coal mine |
| 02/26/2014 | CN102587832B Pressure resistant tool for reducing frictional resistance of horizontal well section |
| 02/26/2014 | CN102536120B Drilling and positioning device for down-the-hole drill |
| 02/26/2014 | CN102392602B Separated orientation joint assembly for oil exploration |
| 02/26/2014 | CN101827995B System and method for controlling a drilling system for drilling a borehole in an earth formation |
| 02/25/2014 | US8659298 Advanced steering tool system, method and apparatus |
| 02/25/2014 | US8657011 Underwater power generation |
| 02/25/2014 | CA2637906C Apparatus for drilling machine alignment |
| 02/25/2014 | CA2630223C Acid tunneling bottom hole assembly |
| 02/20/2014 | WO2014028553A1 Subsea production system with downhole equipment suspension system |
| 02/20/2014 | WO2014028316A1 System and method for delivery of oilfield materials |
| 02/20/2014 | WO2014028106A1 Penetrating a subterranean formation |
| 02/20/2014 | WO2014028105A1 Penetrating a subterranean formation |
| 02/20/2014 | WO2014027137A1 Method, rock drilling rig and control apparatus |
| 02/20/2014 | US20140048334 Directional drilling using magnetic biasing |
| 02/20/2014 | US20140048333 Drill pipe perforator apparatus and method of use |
| 02/20/2014 | US20140048331 Managed pressure drilling system having well control mode |
| 02/20/2014 | DE202014000508U1 Bohrgerät Drill |
| 02/19/2014 | EP2698498A1 Method, rock drilling rig and control apparatus |
| 02/19/2014 | EP2697470A1 Method and device for nondestructive drilling |
| 02/19/2014 | DE202014100247U1 Brunnenrohr zur Verbindung mit Grundwasser führenden Erdschichten, insbesondere zum Einsatz bei Wärmepumpensystemen Well pipe for connection to ground water leading layers of soil, in particular for use in heat pump systems |
| 02/19/2014 | CN203441486U Hydraulic vibration head for sonic drilling |
| 02/19/2014 | CN203441459U High-pressure abrasive slotting device |
| 02/19/2014 | CN203441458U Rotating signal navigator |