Patents for E21B 6 - Drives for drilling with combined rotary and percussive action (930)
05/2010
05/27/2010WO2010058073A1 Rock drilling machine
05/27/2010WO2010058072A1 Rock drilling machine and axial bearing module
05/27/2010WO2010058071A1 Rock drilling machine and axial bearing module
05/27/2010CA2744147A1 Rock drilling machine and axial bearing module
05/27/2010CA2743923A1 Rock drilling machine and axial bearing module
05/18/2010US7717190 Method for controlling percussion device, software production, and percussion device
05/14/2010WO2010015412A3 Method, device and drill head for making a borehole in the soil
05/13/2010US20100116518 Coupling arrangement for coupling rock drill shank
05/12/2010CN201460721U Piston stroke adjusting system of hydraulic rock drill
05/12/2010CN201460720U Automatic hydraulic backhander rock drill
05/06/2010US20100108395 Drill bit assembly for fluid-operated percussion drill tools
05/05/2010EP2181237A1 Drill device having a rotary-vibratory drive
04/2010
04/20/2010CA2479236C Method and device for directional down-hole drilling
04/14/2010EP2173959A1 Method and device for controlling a rock drill rig
04/14/2010CN101694150A Transmission case body with vibratory anchor drill
03/2010
03/18/2010US20100065334 Turbine Driven Hammer that Oscillates at a Constant Frequency
03/17/2010CN101672158A Jumbolter gyrator capable of vibrating and rotating normally and reversely
03/10/2010CN101668922A Coupling arrangement for coupling rock drill shank
03/04/2010WO2009002306A8 Method and device for controlling a rock drill rig
02/2010
02/24/2010CN201412089Y Electrically controlled drill-bit change control circuit
02/24/2010CN201412061Y Wire threaded insert structure for hydraulic rock drill
02/24/2010CN201412060Y Oil return shock absorber for hydraulic rock drill
02/11/2010WO2010015412A2 Method, device and drill head for making a borehole in the soil
02/11/2010US20100032209 Percussion assisted rotary earth bit and method of operating the same
02/10/2010CN201401130Y All-hydraulic rock drilling crawler
01/2010
01/27/2010CN201391225Y Anchoring drill based on double-pump complementary automatic interflowing working mode
01/20/2010EP2145072A1 Coupling arrangement for coupling rock drill shank
01/20/2010CN201386508Y All-hydraulic drilling machine unit
01/20/2010CN201386507Y Rotary blocking type hydraulic power pulse well-drilling tool
01/13/2010CN101624897A Full-automatic hydraulic inverse-drilling rock drilling machine
12/2009
12/31/2009US20090321143 Self-Indexing Down-The-Hole Drill
12/31/2009US20090321141 Methods and Apparatus for Wireline Drilling On Coiled Tubing
11/2009
11/26/2009WO2009118497A3 Rotary-percussive hydraulic hammer drill
11/19/2009WO2009139705A1 A bottom-hole assembly, and a method and system for transmitting data from a bottom-hole assembly
11/19/2009CA2724452A1 A bottom-hole assembly, and a method and system for transmitting data from a bottom-hole assembly
11/17/2009US7617887 Method for casing drilling, drilling unit and adapter device
11/11/2009CN101575942A Pneumatic anchor rod hammer drill
10/2009
10/29/2009US20090266613 force balancing system for use with a well bore tool
10/27/2009US7607493 Hand-held electric power tool
10/21/2009EP1492648B2 Hydraulic rotary-percussive hammer drill
10/13/2009US7600578 Percussion adapter for positive displacement motors
10/01/2009WO2009118497A2 Rotary-percussive hydraulic hammer drill
10/01/2009CA2717654A1 Rotary-percussive hydraulic hammer drill
09/2009
09/30/2009CN201318123Y Jet-flow rotary-type pore-forming device
09/23/2009CN101538987A Anchoring drilling machine based on working mode of double-pump complementation automatic merging
09/17/2009WO2009111887A1 Wellbore drilling accelerator and tubular connection
09/17/2009CA2717484A1 Wellbore drilling accelerator and tubular connection
09/16/2009EP2099999A1 Rock drilling equipment and a method in association with same
09/16/2009CN101532371A Hand-held pneumatic rotary-percussion boring machine
09/11/2009WO2009111434A2 Telescopic fracturing isolation sleeve
08/2009
08/26/2009EP1606487B1 Pneumatic perforator with independent rotation of the drill
08/19/2009CN101509350A Pneumatic crawler hydraulic jumbo
08/18/2009CA2571658C Method for controlling percussion device, software product, and percussion device
07/2009
07/30/2009US20090188686 Method for controlling percussion device, software production, and percussion device
07/23/2009US20090183920 Downhole Percussive Tool with Alternating Pressure Differentials
07/08/2009CN100509301C Method for controlling percussion device, software product, and percussion device
06/2009
06/10/2009CN101451424A Drilling tool with dust collector
06/10/2009CN101451423A Drilling tool with dust collector
06/09/2009CA2426400C Rock drilling machine
06/03/2009CN201250607Y Structure capable of idle drilling and preventing idle striking for hydraulic rock drill
06/03/2009CN201250606Y Locker mechanism for gadder
06/03/2009CN201250605Y Piston for impact and rotation of gadder
06/03/2009CN100494616C Hammer drill
05/2009
05/28/2009US20090133934 Method and device for releasing a block on a bore crown during a boring process
05/20/2009CN201241616Y Air-leg rock drill
05/20/2009CN201241615Y Buffering oil pad structure of hydraulic rock drill
05/20/2009CN201241614Y Cylinder scraping-proof structure of hydraulic rock drill
05/07/2009WO2009057184A1 Drilling apparatus
04/2009
04/23/2009US20090101413 DTH-hammer drilling device and overburden drilling method
04/22/2009CN201225088Y Novel hammer drill machine
04/15/2009CN201221312Y Combined project drill
03/2009
03/05/2009WO2009028964A1 Magnetic hammer
03/05/2009CA2692769A1 Magnetic hammer
03/04/2009EP2029852A1 Hydraulic rotary percussive device of the drill type
03/04/2009EP2029851A1 Mud shaft for the drill string of a rotary percussive drilling rig, impact stack for a mud shaft and rotary percussive drilling rig
03/04/2009CN201202400Y Baseboard anchorage cable drill
02/2009
02/26/2009WO2009023930A1 Down-hole hammer drill
01/2009
01/29/2009WO2009014444A1 Drill device having a rotary-vibratory drive
12/2008
12/31/2008WO2009002306A1 Method and device for controlling a rock drill rig
12/31/2008CA2692027A1 Method and device for controlling a rock drill rig
12/09/2008US7461706 Drilling apparatus with percussive action cutter
11/2008
11/19/2008CN101307675A Multifunctional engineering drill
11/18/2008CA2405686C Rock drilling machine
11/06/2008WO2008132276A1 Coupling arrangement for coupling rock drill shank
11/06/2008CA2685059A1 Coupling arrangement for coupling rock drill shank
11/05/2008CN201144638Y Top vibrating rotary drilling power head device
10/2008
10/29/2008CN201141280Y Mechanical vibration mechanism for mining slewing drill rig
10/22/2008CN101289923A Detachable hammer and drill
10/21/2008US7438138 Impact adapter for transfer of impacts and rotation from an impact rock drilling machine to a drill string
10/09/2008WO2008121004A1 Rotary drive for applying rotary torque to a shaft to be axially vibrated
10/09/2008CA2676263A1 Rotary drive for applying rotary torque to a shaft to be axially vibrated
10/08/2008CN101283158A Method and rock drilling rig for hole drilling
08/2008
08/27/2008CN201106409Y Two-stage propulsion combined oil cylinder of drilling machine
08/27/2008CN101250978A Commutalor for hard rock directional drill
08/13/2008CN100409984C Percussion drill
07/2008
07/29/2008CA2389218C Method and device of controlling a rock drilling machine
07/24/2008WO2008089001A1 Wellbore fluids for casing drilling
06/2008
06/18/2008EP1931853A1 Method and rock drilling rig for hole drilling
05/2008
05/07/2008CN201056984Y Gas-liquid linkage rock drill vehicle
04/2008
04/29/2008CA2375778C Rock drill and mounting frame
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