| Patents for E21B 1 - Percussion drilling (2,080) |
|---|
| 08/13/2008 | CN201100096Y Hydraulic pneumatic tunnel contact net drilling trolley |
| 08/12/2008 | US7410013 Boring and drilling apparatus |
| 08/12/2008 | US7410010 Hydraulic impact mechanism |
| 08/06/2008 | CN101235703A Air percussion hammer for well drilling |
| 07/31/2008 | DE19939000B4 Einrichtung zur Verminderung von Druckschwankungen und/oder Druckstößen an hydraulisch betriebenen Schlagaggregaten Device for reducing pressure fluctuations and / or pressure surges to hydraulically driven percussion units |
| 07/23/2008 | EP1730381A4 Water hammer |
| 07/23/2008 | CN100404209C Sonic drill |
| 07/17/2008 | WO2008085114A1 Rock drilling equipment and a method in association with same |
| 07/16/2008 | EP1943407A1 Backhead and drill assembly with backhead |
| 07/09/2008 | EP1753931B1 Pneumatic perforator |
| 07/03/2008 | US20080156536 Apparatus and Method for Vibrating a Drill Bit |
| 06/26/2008 | WO2008035215A3 Device for channeling solids and fluids within a reverse circulation drill |
| 06/18/2008 | EP1648663B1 Hollow piston hammer device with air equilibration and idle openings |
| 06/18/2008 | CN101201616A System and method for automating or metering fluid recovered at a well |
| 06/17/2008 | CA2560774C Water hammer |
| 06/11/2008 | EP1930127A1 Bearing of a breaking device tool |
| 06/04/2008 | CN201068732Y Air percussion hammer for well drilling |
| 05/28/2008 | CN101187291A Multifunctional impact type well driller |
| 05/22/2008 | WO2008060233A1 Pulse machine, method for generation of mechanical pulses and rock drill and drilling rig comprising such pulse machine |
| 05/22/2008 | WO2008060216A1 Rock drilling method and rock drilling machine |
| 05/22/2008 | CA2669947A1 Rock drilling method and rock drilling machine |
| 05/22/2008 | CA2669121A1 Pulse machine, method for generation of mechanical pulses and rock drill and drilling rig comprising such pulse machine |
| 05/21/2008 | CN201062527Y Oil injection device for hand-held pneumatic drilling machine |
| 05/21/2008 | CN201062489Y Hydraulic shocker |
| 05/21/2008 | CN201062487Y Geophysical valveless foam shocker |
| 05/20/2008 | US7373978 Method for drilling and completing wells |
| 05/14/2008 | CN101180162A Impulse generator, hydraulic impulse tool and method for producing impulses |
| 05/14/2008 | CN100387802C Hydraulic rock drill |
| 05/07/2008 | CN201056977Y Pneumatic hammer drilling bit with heat-resistant ability |
| 04/30/2008 | CN201053493Y Piston of pneumatic rock drill |
| 04/30/2008 | CN201053291Y Screw bar converse stopping mechanism for pneumatic rock drill |
| 04/30/2008 | CN201053290Y Guide sleeve for pneumatic rock drill |
| 04/24/2008 | WO2008046148A1 Down-the-hole hammer drill |
| 04/24/2008 | CA2672175A1 Down-the-hole hammer drill |
| 04/23/2008 | CN201050295Y Punching device |
| 04/16/2008 | CN201047250Y Pneumatic power supporting leg type accessory anchor bolt drilling machine |
| 04/10/2008 | WO2008041906A1 Percussion device and rock drilling machine |
| 04/10/2008 | CA2664659A1 Percussion device and rock drilling machine |
| 04/09/2008 | CN101158266A Hollow hammer hole bottom strong suction apparatus |
| 04/09/2008 | CN101158265A Jet flow type shocker executing mechanism |
| 04/02/2008 | EP1509669B1 Method for regression analysis of formation parameters |
| 04/02/2008 | CN201043440Y Winding drum differential braking mechanism of impact drill |
| 03/27/2008 | WO2008036019A1 Hydraulic impact device with pressure accumulator |
| 03/27/2008 | WO2008036013A1 Method and device for rock drilling |
| 03/27/2008 | US20080075618 tools to withstand greater environmental stresses while incorporating more intricate and complicated structures; building the downhole tool, layer-by-layer, by melting a metal powder or an alloy powder using an electron beam based on the model having a plurality of two-dimensional layers; CAD structure |
| 03/27/2008 | US20080073096 Hollow Piston Hammer Device with Air Equilibration and Idle Openings |
| 03/27/2008 | CA2658329A1 Method and device for rock drilling |
| 03/26/2008 | EP1454028B1 Proppant recovery system |
| 03/26/2008 | CN201040998Y Air-leg type rock drill |
| 03/25/2008 | US7347285 Drilling machine having a movable rod handling device and a method for moving the rod handling device |
| 03/20/2008 | WO2008033075A1 Percussion device, drilling machine including such a percussion device and method for controlling such a percussion device |
| 03/20/2008 | CA2661228A1 Percussion device, drilling machine including such a percussion device and method for controlling such a percussion device |
| 03/19/2008 | CN201037372Y Rock drill oil feeder |
| 03/19/2008 | CN101146978A Ground drilling hammer and the driving method |
| 03/19/2008 | CN101146654A Percussion device |
| 03/06/2008 | US20080054707 Formation Breaking Assembly |
| 03/06/2008 | US20080053703 Downhole tool with turbine-powered pump |
| 03/05/2008 | CN201031614Y Hydraulic impacter for well drilling |
| 02/27/2008 | CN201027489Y Binding type jumper bit |
| 02/27/2008 | CN201027488Y Pneumatic percussion drill tool |
| 02/20/2008 | CN201024883Y Clutching lifter |
| 02/06/2008 | EP1883503A1 Impulse generator, hydraulic impulse tool and method for producing impulses |
| 02/06/2008 | CN201016271Y Pneumatic hammer for well drilling |
| 02/06/2008 | CN201016270Y Outer pneumostome type drilling pneumatic hammer |
| 02/06/2008 | CN201016269Y Air jump bit for oil gas drilling well |
| 02/01/2008 | CA2551992A1 Vibration damper |
| 01/30/2008 | CN201013227Y Tower base rock hole anchor bar driller |
| 01/30/2008 | CN201013226Y Automatic percussion pumping-up reverse circulation drill |
| 01/29/2008 | US7322430 Apparatus and method for reducing required torque |
| 01/23/2008 | EP1381749B1 Method for in situ recovery from a tar sands formation and a blending agent produced by such a method |
| 01/03/2008 | US20080000666 Method for Breaking Rock |
| 01/03/2008 | US20080000662 Chain driven reciprocating hammer with automatic work piece input centering and clamping |
| 12/27/2007 | WO2007147257A1 Stabilizer for drill strings |
| 12/27/2007 | US20070295536 Apparatus and method for reducing required torque |
| 12/25/2007 | US7311143 Method and apparatus for generation of acoustic shear waves through casing using physical coupling of vibrating magnets |
| 12/06/2007 | US20070281867 Increased rate of penetration from low rheology wellbore fluids |
| 12/05/2007 | EP1861228A1 Percussion device |
| 12/04/2007 | US7303238 Mine scaling vehicle |
| 11/22/2007 | US20070269281 Drill Bushing |
| 11/15/2007 | US20070261869 Water Hammer |
| 11/14/2007 | EP1620628A4 Arctic platform |
| 10/31/2007 | EP1425494B1 Swing mounted fill up and circulating tool |
| 10/24/2007 | CN200964787Y Hydraulic drilling hammer |
| 10/24/2007 | CN101059060A Overrunning impact drill |
| 10/17/2007 | EP1472431B1 Method and system for building modular structures from which oil and gas wells are drilled |
| 10/17/2007 | EP1230464B1 High data rate acoustic telemetry system |
| 10/10/2007 | CN101050688A Airleg rock drill |
| 10/10/2007 | CN100341669C Impaction electric hand-held tool machine |
| 10/04/2007 | DE202007008368U1 Vorrichtung zur Erstellung eines Erdlochs Means for creating a earthen hole |
| 09/26/2007 | CN200952389Y In-drilling column solid particle separating tool |
| 09/26/2007 | CN100339191C Rock drilling machine and axial bearing |
| 09/19/2007 | CN200949419Y Pneumatic impact type rockbolt drilling machine |
| 09/18/2007 | CA2323950C Method and apparatus for controlling drilling of rock drill |
| 09/11/2007 | US7267182 Rock drilling rig and rock breaking machine |
| 09/05/2007 | EP1682745B1 Method and device for the drilling of holes in ground or rocky material |
| 09/05/2007 | CN100335736C Rotary support table and method for providing power slip |
| 09/05/2007 | CN100335735C 击打力发生器 Hitting force generator |
| 09/05/2007 | CN100335239C Vibration decoupled percussion mechanism assembly |
| 08/30/2007 | WO2007097677A1 Percussion device and rock drilling machine including such a percussion device |
| 08/30/2007 | US20070199725 Pressure-Fluid-Operated Percussion Device |