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