Patents
Sitemap › E21 - Earth or rock drilling; Mining › E21B - Earth or rock drilling; Obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells › E21B 4 - Drives for drilling, used in the borehole
Patents for E21B 4 - Drives for drilling, used in the borehole (6,032)
03/2014
03/13/2014US20140069723 Method and apparatus for penetrating particulate substrates
03/13/2014US20140069628 Magnetic gear for use with wellbore instruments
03/12/2014CN203476203U Circular truncated cone hammer pore-forming machine
03/12/2014CN103635657A Downhole tool for determining laterals
03/12/2014CN103628815A Near-bit torsion and oscillation coupling impactor
03/12/2014CN103628814A Dual-purpose concentric pipe-along drilling tool
03/12/2014CN103628480A Construction method and device for guide displacement pressure precast pile
03/12/2014CN102661121B Rotary drilling machine for obtaining rock sample under polar region ice layer
03/06/2014WO2014035901A2 Motor and rotor catch assembly
03/06/2014WO2014032847A1 Boring apparatus and method for producing a bore
03/06/2014US20140060936 Motor and rotor catch assembly
03/05/2014EP2703596A1 Drilling device and method for producing a borehole
03/05/2014EP2703564A1 Guide frame for guiding a milling device
03/05/2014EP2701880A1 An impact mechanism, rock drill and drill rig comprising such impact mechanism
03/05/2014CN103615194A Oil seal spindle assembly of screw drill
03/05/2014CN103615193A Anti-dropping transmission shaft assembly for positive displacement motor
03/04/2014US8665110 Transmitting electric power into a bore hole
03/04/2014US8662202 Electro-mechanical thruster
02/2014
02/27/2014WO2014031092A1 Hydrostatic pressure actuated stroke amplifier for downhole force generator
02/27/2014WO2013163565A4 Downhole motor with concentric rotary drive system
02/27/2014US20140054092 Rotary jet bit for jet drilling and cleaning
02/27/2014US20140054091 Coatings for fluid energy device components
02/26/2014EP2700151A2 Downhole assembly with magnetic gearbox
02/26/2014CN203452645U Casing driving head suitable for casing drilling
02/26/2014CN203452067U Cast-in-place pile hole construction apparatus of DTH hammer full-protective cylinder
02/26/2014CN103607068A Low-speed motor direct driving mechanism used for top part driving well drilling device
02/26/2014CN102587832B Pressure resistant tool for reducing frictional resistance of horizontal well section
02/20/2014WO2014028220A1 Slickline or wireline run hydraulic motor driven mill
02/19/2014CN203441356U Transmission shaft for screw drill
02/18/2014US8651202 Percussion drilling assembly having a floating feed tube
02/13/2014WO2014025975A1 Releasable connection for coiled tubing drilling apparatus
02/13/2014WO2014025965A1 Rotary actuated cutter module system and methodology
02/13/2014US20140041943 Drilling motor valve and method of using same
02/12/2014CN203430420U Novel torque percussion drilling tool
02/11/2014CA2715688C Passive vertical drilling motor stabilization
02/11/2014CA2686627C Electrically sequenced tractor
02/06/2014WO2014022737A1 Method of cutting a control line outside of a tubular
02/06/2014WO2014022339A1 Drill bit with electrohydraulically adjustable pads for controlling depth of cut
02/06/2014WO2014022338A1 Drill bit with a force application device using a lever device for controlling extension of a pad from a drill bit surface
02/06/2014WO2014022336A1 Drill bit with hydraulically-activated force application device for controlling depth-of-cut of the drill bit
02/06/2014WO2014022335A1 Drill bit with a force application using a motor and screw mechanism for controlling extension of a pad in the drill bit
02/06/2014WO2013063317A3 High expansion or dual link gripper
02/06/2014US20140037232 Mud-Lubricated Bearing Assembly with Mechanical Seal
02/06/2014US20140034387 Rotation unit, rock drilling unit and method for rock drilling
02/06/2014US20140034311 Methods and apparatus for wellbore construction and completion
02/05/2014CN203420633U Down-the-hole drill space multi-direction drilling mechanism
02/05/2014CN203420632U Underground hydraulic tool for well drilling
02/05/2014CN103556941A Downhole drilling assembly
02/04/2014US8640794 Pressurized fluid flow system for a normal circulation hammer and hammer thereof
02/04/2014US8640793 Dynamic steering tool
02/03/2014CA2822415A1 Mud-lubricated bearing assembly with mechanical seal
01/2014
01/30/2014US20140027176 Drill Bit with a Force Application Using a Motor and Screw Mechanism for Controlling Extension of a Pad in the Drill Bit
01/29/2014CN203412508U Rodless drilling machine
01/29/2014CN103547768A Jarring method and apparatus using fluid pressure to reset jar
01/29/2014CN102317565B Down-the-hole drill and its operation method
01/28/2014US8636088 Rock drilling machine and axial bearing module
01/28/2014CA2621022C A percussion hammer for enlarging drilled holes
01/23/2014WO2014014599A1 Bearing assemblies, apparatuses, and motor assemblies using the same
01/23/2014WO2014014480A1 Downhole tool and system and method related thereto
01/23/2014WO2014014442A1 Downhole motors having adjustable power units
01/23/2014WO2013163565A3 Downhole motor with concentric rotary drive system
01/22/2014CN203403823U 矩形孔钻机 Rectangular hole drilling rig
01/22/2014CN203403810U Hydraulic shock slewing drilling machine
01/22/2014CN203403809U Torque-free drilling machine
01/22/2014CN203403808U Double-gear pore forming machine
01/22/2014CN203403807U Return-water-jetting prevention downhole motor drive shaft assembly
01/22/2014CN203403806U Impact pneumatic control component of mining pneumatic roofbolter
01/22/2014CN103534434A Submersible progressive cavity pump driver
01/22/2014CN103534433A Pressurised fluid flow system for a normal-circulation down-the-hole hammer and hammer comprising said system
01/22/2014CN103527097A Active-adjusting type composite drill bit
01/22/2014CN103527078A Hole forming technology and device for bored pile construction through down-the-hole hammer
01/22/2014CN103527077A Downhole turbine motor plasma drilling tool
01/22/2014CN102518393B Combined down-the-hole hammer
01/21/2014US8631884 Pressure reversing valve assembly for a down-the-hole percussive drilling apparatus
01/21/2014US8631883 Sectorial force balancing of drill bits
01/21/2014CA2780885C Vibrating downhole tool
01/16/2014WO2014011178A1 Control line damper for valves
01/16/2014US20140014386 Power tool with battery pack ejector
01/16/2014US20140014368 Downhole driving unit having a hydraulic motor in a wheel
01/16/2014US20140014367 Downhole driving unit having a spring member for assembling a hydraulic motor housing
01/16/2014US20140014366 Downhole driving unit having a hydraulic motor with a static cam ring
01/16/2014US20140014365 Downhole driving unit having a hydraulic motor with a planetary gearing system
01/15/2014EP2683906A2 Bearing / gearing section for a pdm rotor / stator
01/15/2014CN203394346U Underground power drilling tool
01/15/2014CN103510871A Complex structural well drag-reduction wrenching-reduction compound drilling method
01/15/2014CN103510846A Well drilling impacting device
01/08/2014EP2681408A1 Mechanical force generator for a downhole excitation apparatus
01/08/2014EP2681407A2 Tractor and jar assembly
01/08/2014CN203383727U Screw drill tool with long service life and high performance
01/07/2014US8622152 Down-the-hole drill hammer having a sliding exhaust check valve
01/03/2014WO2014004022A1 Automated remote actuation system
01/01/2014CN203374203U Hydraulic down hole hammer
01/01/2014CN203374202U High-pressure underwater down-hole hammer
01/01/2014CN203374200U Air distribution device for power-head drilling rig and rotary-table drilling rig
12/2013
12/31/2013US8616304 Bearing assemblies, and bearing apparatuses using the same
12/31/2013US8616301 Pneumatic hammer mechanism
12/27/2013WO2013192518A1 High temperature supercapacitor
12/27/2013WO2013191838A1 Directional drilling system
12/27/2013WO2013191688A1 Fluid-driven power generation unit for a drill string assembly
12/26/2013US20130341099 Downhole motor assembly
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