| Patents for E21B 4 - Drives for drilling, used in the borehole (6,032) |
|---|
| 12/25/2013 | EP2065553B1 System and method for drilling lateral boreholes |
| 12/25/2013 | CN203362034U Screw drill impactor |
| 12/25/2013 | CN203362033U High air pressure downhole impacter without inner cylinder |
| 12/25/2013 | CN203362032U Hydraulic power station for offshore oil drilling machine |
| 12/25/2013 | CN103470180A Core valve energy storing type hydraulic down-the-hole hammer |
| 12/25/2013 | CN102345712B Reverser |
| 12/20/2013 | CA2780515A1 Downhole motor assembly |
| 12/19/2013 | WO2013188206A1 Drill bit with hydraulically adjustable axial pad for controlling torsional fluctuations |
| 12/19/2013 | WO2013186554A2 Apparatus and method for controlling a part of a downhole assembly, and a downhole assembly |
| 12/19/2013 | US20130333948 Generating Fluid Telemetry |
| 12/19/2013 | US20130333947 Magnetostrictive motor for a borehole assembly |
| 12/19/2013 | CA2875197A1 Drill bit with hydraulically adjustable axial pad for controlling torsional fluctuations |
| 12/18/2013 | EP2673450A1 Annulus ring hole drill |
| 12/18/2013 | EP2673449A2 Helical drilling apparatus, systems, and methods |
| 12/18/2013 | CN203347681U Cam type high-frequency percussion drilling tool |
| 12/18/2013 | CN203347680U Pneumatic down-hole hammer allowing concrete to be pumped in center |
| 12/18/2013 | CN203347679U Large-diameter downthehole hammer drill rod |
| 12/18/2013 | CN103459095A Device for rock- and concrete machining |
| 12/18/2013 | CN103459094A Device and method for rock and concrete machining |
| 12/17/2013 | US8607897 Center discharge gas turbodrill |
| 12/17/2013 | US8607896 Jet turbodrill |
| 12/12/2013 | WO2013184714A2 Downhole safety joint |
| 12/12/2013 | WO2013184277A2 Pull through centralizer |
| 12/12/2013 | WO2013184276A2 Pull through centralizer |
| 12/12/2013 | WO2013182922A1 Progressive cavity pump |
| 12/12/2013 | CA2875794A1 Tachometer for downhole drilling motor |
| 12/11/2013 | EP2334890B1 An apparatus and method for cutting a wellbore |
| 12/11/2013 | CN203334951U Down hole hammer |
| 12/11/2013 | CN203334950U Piston with flow guiding port and down-hole hammer manufactured with piston with flow guiding port |
| 12/11/2013 | CN203334949U Downhole tool power machine |
| 12/11/2013 | CN103437714A Turbine stator for turbine drill |
| 12/11/2013 | CN103437708A Casing pipe driving head suitable for casing pipe well drilling |
| 12/11/2013 | CN103437701A Local electric rotary drilling device |
| 12/10/2013 | US8602127 High temperature drilling motor drive with cycloidal speed reducer |
| 12/10/2013 | US8602115 Grip enhanced tractoring |
| 12/04/2013 | EP2519707B1 Downhole guiding tool |
| 12/04/2013 | CN203321325U Power reaming down-hole motor for horizontal directional drilling |
| 12/04/2013 | CN203321313U Down-hole hammer |
| 12/04/2013 | CN203321312U Gear down-the-hole mixing drilling tool and gear down-the-hole drilling machine comprising gear down-the-hole mixing drilling tool |
| 12/04/2013 | CN203321311U Gear down-the-hole mixing drilling tool and gear down-the-hole drilling machine comprising gear down-the-hole mixing drilling tool |
| 12/04/2013 | CN203321310U Full-mechanized face emulsion rock drill |
| 12/04/2013 | CN203321309U Hydraulic drill carriage propelling device for coal mine |
| 12/04/2013 | CN103422811A Well drill with electric drill bit |
| 12/04/2013 | CN102493764B Integrated drilling machine capable of being quickly detached and hung on excavator working arm |
| 12/04/2013 | CN102364027B Coning type hydraulic life-saving hole drill in mining life-saving capsule |
| 12/04/2013 | CN102155158B Jet rotor |
| 12/03/2013 | CA2701474C Downhole motor assembly with torque regulation |
| 12/03/2013 | CA2518879C Method and system for reverse circulation drilling |
| 11/28/2013 | WO2013177378A1 Apparatus and method for controlling or limiting rotor orbit in moving cavity motors and pumps |
| 11/28/2013 | WO2013176677A1 Drilling operation control using multiple concurrent hydraulics models |
| 11/28/2013 | WO2013174359A1 Percussion device |
| 11/28/2013 | US20130313023 Bearing apparatuses and motor assemblies using same |
| 11/28/2013 | US20130313022 Rotational locking mechanisms for drilling motors and powertrains |
| 11/27/2013 | CN203308640U Turbine stator and rotor assembly and turbine motor |
| 11/27/2013 | CN103410438A Cone frustum hammer pore-forming machine |
| 11/27/2013 | CN103410437A Drill-pipe-free drilling machine |
| 11/27/2013 | CN103410436A Blowout-preventing anti-backflow transmission shaft assembly for down-hole motor |
| 11/21/2013 | WO2013040578A9 Sealed jar |
| 11/21/2013 | WO2013028277A3 Bearing assemblies, apparatuses, and motor assemblies using the same |
| 11/21/2013 | US20130306379 Annulus Ring Hole Drill |
| 11/21/2013 | US20130306376 Pressure balanced fluid operated reaming tool for use in placing wellbore tubulars |
| 11/20/2013 | CN203296697U Down-the-hole hammer |
| 11/20/2013 | CN203296684U High-air-pressure piston |
| 11/20/2013 | CN203296683U High-air-pressure down-hole impactor |
| 11/20/2013 | CN203296682U Down-the-hole hammer |
| 11/20/2013 | CN203296681U Rotary drilling rig pressurization system and rotary drilling rig with same |
| 11/14/2013 | WO2013017560A3 Drilling tool for laying a tube in the ground |
| 11/13/2013 | CN203285417U Diving drill operation parameter monitoring instrument |
| 11/13/2013 | CN203285331U Electric drilling rig |
| 11/13/2013 | CN203285330U Buffering transmission device of coal bed gas drilling machine |
| 11/13/2013 | CN103388451A Ultrahigh-temperature screw drill |
| 11/12/2013 | US8579037 Method and apparatus for controlled bidirectional movement of an oilfield tool in a wellbore environment |
| 11/07/2013 | WO2013165745A1 Adjustable pressure hydrostatic setting module |
| 11/07/2013 | WO2012177339A3 Housing, mandrel and bearing assembly for downhole drilling motor |
| 11/07/2013 | WO2012120282A3 Tractor and jar assembly |
| 11/07/2013 | WO2012069858A3 Downhole drilling tool and bearing assembly |
| 11/07/2013 | US20130292182 Down-the-hole hammer drill assembly |
| 11/07/2013 | US20130292180 Steerable Gas Turbodrill |
| 11/06/2013 | CN203271584U Well-drilling water-pressure torsional impact device |
| 11/06/2013 | CN103382828A Two-dimensional hydraulic vibrator used for petroleum drilling |
| 11/06/2013 | CN103382808A Torque-free drill rig |
| 11/06/2013 | CN102400642B Drilling rotary swing power head for high pressure jet grouting |
| 11/05/2013 | US8573324 Battery for a power tool |
| 10/31/2013 | WO2013163565A2 Downhole motor with concentric rotary drive system |
| 10/31/2013 | WO2013162377A1 Drilling device and method for using the same |
| 10/31/2013 | WO2013159153A1 Downhole motor with concentric rotary drive system |
| 10/30/2013 | CN103375131A Efficient down-hole hammer |
| 10/29/2013 | US8567528 Apparatus and method for directional drilling |
| 10/24/2013 | WO2013158096A1 Drilling assembly with high-speed motor gear system |
| 10/23/2013 | CN203248069U Rectangular hole well drill |
| 10/23/2013 | CN203248068U Middle and low pressure down-hole hammer with high efficiency |
| 10/23/2013 | CN203248067U Down-hole hammer |
| 10/23/2013 | CN203248066U Efficient down-hole impact equipment |
| 10/23/2013 | CN203248065U Novel high-power air-operated drill |
| 10/23/2013 | CN103362438A Power section of hydraulic balance turbodrill |
| 10/22/2013 | US8561723 Magnetic hammer |
| 10/22/2013 | CA2765605C Air hammer optimization using acoustic telemetry |
| 10/22/2013 | CA2538548C Methods and apparatus for placement of well equipment |
| 10/18/2013 | CA2775524A1 Wellbore completion system with reaming tool |
| 10/17/2013 | DE102010050244B4 Meißeldirektantrieb für Werkzeuge auf Basis einer Wärmekraftmaschine Direct bit drive for tools on the basis of a heat engine |