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)
02/2011
02/09/2011CN101967955A Rotation-revolution combined down-hole hammer and construction method thereof
02/08/2011US7882906 Up-down vibratory drilling and jarring tool
02/06/2011CA2710728A1 Systems and methods for automatic forward phasing determination in a downhole pump system
02/03/2011US20110024196 Steerable ground piercing tools
02/03/2011US20110024195 Drilling with a high pressure rotating control device
02/02/2011EP2279324A1 Stator for use in helicoidal motor
02/02/2011CN201730549U Disc valve revolving drilling tool
02/02/2011CN201730546U Turbine drill
02/02/2011CN201730545U Pneumatic down-the-hole drill power output device
02/02/2011CN101965458A Progressive cavity apparatus with transducer and methods of forming and use
02/02/2011CN101545356B Downhole drill head
02/01/2011CA2506056C Drilling a borehole
01/2011
01/27/2011US20110017513 Drilling unit, method for slot drilling and slotting device
01/26/2011CN201723147U Speed reducer of down-the-hole drill
01/26/2011CN201723146U Bidirectional DTH hammer
01/26/2011CN101956526A Rotary percussion hammer
01/26/2011CN101956525A Down-the-hole hammer reverse concentric casing drilling tool
01/25/2011US7874382 Pneumatically reversible ram boring device
01/25/2011CA2560589C Turbodrill with asymmetric stator and rotor vanes
01/20/2011US20110011557 System to enable geothermal field interaction with existing hvac systems, method to enable geothermal field interaction with existing hvac system
01/19/2011EP2274526A1 Drive shaft assembly for a downhole motor
01/19/2011CN201714293U Semi-ring transmission shaft assembly of screw drilling tool
01/19/2011CN101949262A Combined drilling device
01/19/2011CN101949261A Combined down-the-hole hammer and construction method thereof
01/19/2011CN101949260A Auxiliary hammer mechanism of percussive hammer capable of releasing after storing energy and energy-storage type percussive hammer
01/18/2011US7870913 Bearing assemblies, and bearing apparatuses and motor assemblies using same
01/18/2011CA2439331C Method of stabilizing a downhole drilling motor and a downhole drilling motor
01/15/2011CA2709597A1 End coil tie downs
01/13/2011US20110005839 Retention Means for a Seal Boot Used in a Universal Joint in a Downhole Motor Driveshaft Assembly
01/13/2011US20110005838 Horizontal directional drilling system
01/12/2011CN201705201U Novel dustproof drilling machine with diamond thin-wall drill
01/12/2011CN201705200U Hydraulic top-driving drilling device
01/11/2011US7866416 Clutch for a jack element
01/11/2011US7866407 Method for construction of low thermal expansion and low resistance wire for logging applications
01/07/2011CA2708877A1 Retention means for a seal boot used in a universal joint in a downhole motor driveshaft assembly
01/06/2011WO2011002301A1 A power generating apparatus with an annular turbine
01/06/2011WO2011000102A1 Vibrating downhole tool
01/06/2011WO2010129675A3 A down hole drill assembly and a method of operating a down hole drill assembly
01/06/2011US20110000695 Pulse generating device and a rock drilling rig comprising such a device
01/06/2011CA2780885A1 Vibrating downhole tool
01/06/2011CA2767000A1 A power generating apparatus with an annular turbine
01/04/2011CA2461985C Down-the-hole drill assembly
12/2010
12/30/2010US20100326733 Vibrating downhole tool
12/29/2010WO2010151743A2 Sealing system and bi-directional thrust bearing arrangement for a downhole motor
12/29/2010CN201687386U Screw drilling tool
12/29/2010CA2766159A1 Sealing system and bi-directional thrust bearing arrangement for a downhole motor
12/28/2010US7857076 Force balancing system for use with a well bore tool
12/28/2010US7857065 Device for selective movement of well tools and also a method of using same
12/23/2010WO2010145005A1 Air hammer optimization using acoustic telemetry
12/23/2010US20100319995 Self-circulating drill bit
12/23/2010US20100319907 Drilling Tool with Feed Control
12/22/2010CN101413377B Flow injection type impacter abrasion-proof inner casing cylinder and piston
12/16/2010WO2010142949A2 Downhole tubular lifter and method of using the same
12/16/2010WO2010103317A3 Percussion mole
12/16/2010WO2010093685A3 Down hole hammer having elevated exhaust
12/16/2010US20100314173 Methods of drilling with a downhole drilling machine
12/16/2010US20100314172 Shaft catch
12/16/2010DE102007015266B4 Lagerung für einen Turbinenrotor einer Bohrstrangturbine Storage for a turbine rotor of a Bohrstrangturbine
12/15/2010CN201671569U Multichannel drill pipe built in down-the-hole hammer
12/15/2010CN201671536U Built-in self-balancing anti-seepage device of down-the-hole hammer
12/15/2010CN201671534U Screw drilling tool
12/15/2010CN201671533U Light tunnel drilling machine
12/15/2010CN101918672A 钻井系统 Drilling System
12/15/2010CN101353945B Non-drill rod boring tool
12/15/2010CN101307674B Long life spiral transduction apparatus
12/15/2010CN101158265B Jet flow type shocker executing mechanism
12/14/2010US7849937 Method and device for producing a cased string bore
12/14/2010US7849935 System and method for drilling wellbores
12/14/2010CA2597368C Passive vertical drilling motor stabilization
12/14/2010CA2461201C An inverted motor for drilling
12/09/2010US20100307833 Jet turbodrill
12/09/2010US20100307832 Tractor with improved valve system
12/08/2010EP2257684A2 Internally dampened percussion rock drill
12/08/2010CN101910544A Vibratory unit for drilling systems
12/08/2010CN101906935A Universal shaft of underground motor
12/02/2010US20100300763 Down-the-Hole Hammer Drill
12/01/2010CN201661236U Hydraulic system of double dynamical rotary digging drilling machine
11/2010
11/25/2010US20100294570 Boom arrangement for a rock drill and rock drill rig
11/24/2010CN201650258U Intelligent deep-hole drill carriage control device
11/24/2010CN201650108U Shearing-type down-the-hole drill
11/24/2010CN201650107U Light outdoor downhole drill
11/24/2010CN201650106U Penetrating type down-the-hole impacter
11/24/2010CN201650105U Hydraulic travel motor
11/24/2010CN101896681A Downhole load sharing motor assembly
11/23/2010US7836977 Method of drilling a well at or under balance using a electrical submersible pump
11/23/2010US7836976 Underground piercing tool
11/23/2010CA2444811C Downhole torque-generating and generator combination apparatus
11/18/2010WO2010132182A1 Bearing assembly including at least one superhard bearing element having at least one registration feature, bearing apparatus including same, and methods for making same
11/18/2010WO2010103271A3 A borehole cutting assembly for directional cutting
11/18/2010US20100288559 Method and device for manufacturing a down hole motor radial bearing
11/18/2010US20100288558 Bearing assembly including at least one superhard bearing element having at least one registration feature, bearing apparatus including same, and methods for making same
11/18/2010CA2758730A1 Bearing assembly including at least one superhard bearing element having at least one registration feature, bearing apparatus including same, and methods for making same
11/17/2010CN201635648U Double dynamical rotary digging drilling machine cooling device
11/17/2010CN201635647U Vibration reduction control device for power head of rotary drilling rig
11/16/2010US7832504 Exhaust valve and bit assembly for down-hole percussive drills
11/16/2010US7832503 Downhole motor with a continuous conductive path
11/16/2010US7832502 Methods and apparatus for drilling directional wells by percussion method
11/11/2010WO2010129675A2 A down hole drill assembly and a method of operating a down hole drill assembly
11/11/2010WO2010107606A3 System and method for directional boring including continuous reverse rotation
11/11/2010WO2010098930A3 Sealing array for high temperature applications
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