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)
08/2010
08/12/2010CA2751718A1 Downhole apparatus with a wireless data communication device between rotating and non-rotating members
08/12/2010CA2749972A1 Arrangement for a down-the-hole hammer drill for use in soil consolidation through jet grouting
08/11/2010CN201546617U Three-piece pin air down-the-hole hammer eccentric casing drilling tool connected with elastic cylindrical pin assembly
08/10/2010US7770667 Electrically powered tractor
08/10/2010US7770659 Rotary drive assembly for a drill rod
08/05/2010WO2010088057A1 Down-the-hole drill reverse exhaust system
08/05/2010CA2750810A1 Down-the-hole drill reverse exhaust system
07/2010
07/29/2010US20100187017 Down-the-hole Drill Reverse Exhaust System
07/29/2010US20100187014 Thrust Bearing Assembly
07/29/2010US20100187013 Motor shaft security apparatus
07/29/2010US20100187009 Adjustable downhole motors and methods for use
07/22/2010US20100181112 Drilling assemblies including one of a counter rotating drill bit and a counter rotating reamer, methods of drilling, and methods of forming drilling assemblies
07/21/2010CN101784744A Power transmission system for use with downhole equipment
07/21/2010CN101223333B A drill bit assembly for fluid-operated percussion drill tools
07/20/2010US7757779 Compressed air percussive mechanism for a down hole hammer and down hole hammer
07/20/2010CA2458796C Drilling apparatus
07/16/2010CA2688928A1 Turbine for driving a generator in a drill string
07/15/2010WO2010058152A3 Systems and methods for protecting drill blades in high speed turbine drills
07/15/2010US20100175925 Pump control for formation testing
07/15/2010DE202010002867U1 Lagervorrichtungen und Anlagen, die diese enthalten Storage equipment and systems containing these
07/14/2010CN201526278U Low-speed large-torque screw drill tool
07/14/2010CN201526271U Crawler-type all-hydraulic tunnel drilling machine
07/14/2010CN101775959A Drilling machine of coaxial double-drill large-caliber multifunctional foundation pile
07/13/2010US7755235 Downhole generator for drillstring instruments
07/08/2010WO2010078537A1 Systems and methods for providing electrical transmission in downhole tools
07/06/2010US7748478 Percussion drilling assembly and hammer bit with an adjustable choke
07/06/2010US7748476 Variable linkage assisted gripper
07/06/2010CA2449506C Downhole tool
07/01/2010US20100163251 Roller link toggle gripper and downhole tractor
06/2010
06/30/2010EP2201206A2 Shaft seal for down-hole tools
06/30/2010CN201517367U Vehicle-mounted hole boring machine
06/30/2010CN101063401B Internal combustion fluid jet boring device
06/29/2010US7743849 Dual tractor drilling system
06/24/2010WO2010049724A3 Spindle drive system and method of machining a member using such a system
06/23/2010EP2198109A2 Downhole motor assembly with torque regulation
06/23/2010EP2198108A2 Hydrodynamic bearing assemblies, and hydrodynamic bearing apparatuses and motor assemblies using same
06/23/2010CN201513122U Lateral wall reinforcing center drill rig of ropes
06/23/2010CN201513119U Rotary drilling rig
06/23/2010CN101748762A Device for mixing soil materials
06/16/2010CN201509118U Motor drive part of anchor drilling machine
06/16/2010CN201507240U Anti-blocking hollow rotor of screw drill
06/16/2010CN201507239U Turbine rotor stator
06/16/2010CN1826454B Downhole hammer drill
06/16/2010CN101737009A Geometry steerable drilling system driven by liquid and gas phase drilling media rotary disc
06/16/2010CN101737008A Large-aperture split arm type downhole drill
06/15/2010US7735581 Locking clutch for downhole motor
06/10/2010WO2010064001A2 Sealing glands and methods of use
06/10/2010WO2010063999A2 Drill string with modular motor units
06/10/2010WO2009088827A3 Progressive cavity apparatus with transducer and methods of forming and use
06/10/2010US20100139979 Percussion Drilling Assembly With Annular Locking Member
06/09/2010CN201502318U High air-pressure down-the-hole hammer
06/08/2010US7730937 Electric submersible pump and motor assembly
06/03/2010WO2010061168A2 Valve-controlled downhole motor
06/03/2010US20100133011 Drill string with modular motor units
06/03/2010CA2744549A1 Valve-controlled downhole motor
06/02/2010EP2192259A1 Pipeline pressure device with endless conveyor members for use during a horizontal directional drilling process
06/02/2010EP2191095A1 Magnetic hammer
06/02/2010EP2191094A1 Down-hole hammer drill
06/02/2010CN201496341U Downhole drill thrust cylinder piston
06/02/2010CN201495986U Tracked hydraulic down-the-hole drill
06/02/2010CN201495985U Mechanical down-the-hole impacter
06/02/2010CN201495984U Support oil cylinder for long spiral drilling machine
06/02/2010CN201495983U Downhole drill central air feed pipe coupling device
06/01/2010CA2413124C Drive system
05/2010
05/27/2010WO2010058152A2 Systems and methods for protecting drill blades in high speed turbine drills
05/27/2010US20100126777 Drilling System with a Barrel Drilling Head Driven by a Downhole Tractor
05/27/2010US20100126774 Valve-controlled downhole motor
05/27/2010US20100126773 Drilling apparatus and system for drilling wells
05/27/2010US20100126772 Hydro-percussive mechanisims for drilling systems
05/26/2010CN201486465U Screw drill motor rotor anti-falling device
05/26/2010CN201486464U Volume-type turbine rotor
05/20/2010US20100122850 Systems and methods for protecting drill blades in high speed turbine drills
05/19/2010CN201474599U Double-thread fixed-type bearing of screw drill
05/19/2010CN201474598U Closed-type gear transmission carrying device
05/19/2010CN101709621A Wind pressure drilling device of pneumatic down-hole hammer
05/14/2010WO2010053968A2 Downhole mud motor and method of improving durability thereof
05/14/2010WO2010009826A4 Earth auger device
05/13/2010US20100116554 Turbo-gear for speedy drilling wells
05/13/2010US20100116520 Internally dampened percussion rock drill
05/12/2010CN201461727U Polycrystalline diamond sliding thrust bearing assembly
05/12/2010CN201460931U Roof bolter out-of-hand stalling device
05/12/2010CN201460819U Drill central air supply device
05/12/2010CN201460775U Hydraulic power water tap of oil rig directly driven by adopting radial plunger motor
05/12/2010CN201460738U Tower type large diameter deep well planetary primary-secondary drill
05/12/2010CN201460728U Hydraulic drilling device arranged on road-header
05/12/2010CN201460719U Rotary impact hammer
05/12/2010CN201460718U Valveless single-cylinder type middle-low air pressure downhole impactor
05/12/2010CN201460717U Speed regulating device for downhole drill for surface mine
05/12/2010CN201460716U Positioning device for static sheath on TC bearing
05/12/2010CN201460715U Transmission shaft anti-drop device of screw drilling tool
05/12/2010CN201460714U Eccentric drilling tool
05/12/2010CN201460713U Novel anti-dropping transmission shaft assembly
05/12/2010CN101705786A Pot hole drilling machine carried on vehicle
05/11/2010US7712838 Ground support insertion tool
05/11/2010US7712552 Water hammer
05/11/2010US7712550 Thrust bearing assembly
05/06/2010WO2010049724A2 Spindle drive systems and methods
05/06/2010WO2010002270A3 Trigger device for activating an action
05/06/2010US20100108395 Drill bit assembly for fluid-operated percussion drill tools
05/06/2010US20100108393 Downhole mud motor and method of improving durabilty thereof
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