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 1 - Percussion drilling
Patents for E21B 1 - Percussion drilling (2,080)
08/2009
08/19/2009CN101509349A Electromagnetical drilling impactor
08/18/2009CA2571658C Method for controlling percussion device, software product, and percussion device
08/12/2009CN201288504Y Digging machine type drill
08/06/2009US20090194336 Damping and Drilling Machine Including Such a Damping Device
08/05/2009CN101500762A Percussion device, drilling machine including such a percussion device and method for controlling such a percussion device
08/05/2009CN100523391C An improved device
07/2009
07/30/2009US20090188686 Method for controlling percussion device, software production, and percussion device
07/29/2009EP2082112A1 Down-the-hole hammer drill
07/29/2009EP2081737A1 Rock drilling method and rock drilling machine
07/29/2009EP2081736A1 Pulse machine, method for generation of mechanical pulses and rock drill and drilling rig comprising such pulse machine
07/29/2009EP1649128B1 Device for drilling a bore in the ground
07/23/2009WO2009091408A1 Em-guided drilling relative to an existing borehole
07/22/2009CN201276968Y Mechanical soil layer horizontal perforator
07/16/2009WO2009058725A3 Downhole seal bore repair device
07/09/2009WO2006007242A3 Side entry apparatus and method
07/08/2009CN100509301C Method for controlling percussion device, software product, and percussion device
07/07/2009US7556107 Construction machine for foundation construction
06/2009
06/18/2009WO2009076635A2 Device and method to reduce breakdown/fracture initiation pressure
06/17/2009EP2069602A1 Percussion device and rock drilling machine
06/17/2009CN101457634A Independence control hydraulic impactor for piezo crystal displacement feedback load port
06/17/2009CN101457633A Independence control hydraulic impactor for piston displacement electric feedback load port
06/09/2009CA2426400C Rock drilling machine
06/03/2009EP2064033A1 Hydraulic impact device with pressure accumulator
06/03/2009EP2064032A1 Method and device for rock drilling
06/03/2009CN100494613C Submerged hole driller component element
05/2009
05/28/2009US20090133933 Method and device for drilling, particularly percussion or rotary percussion drilling, a hole in soil or rock material
05/27/2009CN101440692A Gas leg type high speed rock drill
05/20/2009EP2059369A1 Percussion device, drilling machine including such a percussion device and method for controlling such a percussion device
05/20/2009CN101435312A Multifunctional hammer drill
05/19/2009CA2455685C Rock drill silencing apparatus
05/14/2009US20090121537 Boom arrangement for a scaling device and scaling device
05/13/2009CN201236621Y Improved novel electric driven rock drill
05/12/2009CA2463601C Method and apparatus for monitoring operation of percussion device
05/07/2009WO2009058725A2 Downhole seal bore repair device
05/07/2009WO2009057184A1 Drilling apparatus
05/07/2009US20090114402 Method and Device for Drilling, Particularly Percussion or Rotary Percussion Drilling ,a Hole in Soil or Rock Material
04/2009
04/23/2009US20090101413 DTH-hammer drilling device and overburden drilling method
04/22/2009CN201225088Y Novel hammer drill machine
04/14/2009US7516790 Mono-diameter wellbore casing
03/2009
03/25/2009EP1576253A4 Method using particulate chelates to stimulate production of petroleum in carbonate formations
03/25/2009CN201212354Y High-efficiency civil rig
03/18/2009EP2035649A1 Stabilizer for drill strings
03/11/2009EP2032795A2 Device for channeling solids and fluids within a reverse circulation drill
03/11/2009EP1791681B1 Method for breaking rock
03/05/2009WO2009028964A1 Magnetic hammer
03/05/2009CA2692769A1 Magnetic hammer
03/04/2009CN201202398Y High strength air hammer drill connecting apparatus for gas drilling
02/2009
02/26/2009WO2009026011A1 Tool with selectively-biased member having an adjustment feature
02/18/2009CN201196021Y Gas-tight oil layer well washing protector
02/11/2009CN101363305A Long-life high performance air hammer
02/04/2009CN201190532Y Hammer drill for tunnel ventilation hole
02/04/2009CN100457399C Feeder support for percussion machine tool
01/2009
01/29/2009US20090025948 Percussion Device
01/15/2009US20090016824 Ground compaction
01/14/2009CN101346527A Damping and drilling machine including such a damping device
01/14/2009CN101343978A High-wind pressure impactor piston
01/08/2009WO2009005436A1 Fuel-powered rock breaker
01/07/2009CN101341005A Pulse generator and impulse machine for a cutting tool
01/07/2009CN100449113C Method for drilling and completing wells
12/2008
12/17/2008EP1545839A4 Sonic drill
12/17/2008EP1485567B1 Mono-diameter wellbore casing
12/10/2008CN101319595A Jet stream type impactor for oil gas well drilling
12/10/2008CN101319509A Combination type multifunctional engineering equipment
12/10/2008CN101319508A Hydraulic shock vibration system in multifunctional engineering equipment
12/09/2008US7461901 Method and means for processing oil sands while excavating
11/2008
11/26/2008CN201156698Y An electric harmonic reciprocating line motion impact device
11/26/2008CN100436751C Underwater hydraulic impacting shovel
11/18/2008CA2405686C Rock drilling machine
11/11/2008US7448692 Method and means for processing oil sands while excavating
11/05/2008EP1986825A1 Percussion device and rock drilling machine including such a percussion device
11/05/2008CN201144636Y Automatic detector embedding machine
11/05/2008CN101298829A Automatic reciprocating hydraulic oil cylinder type hammer drill
10/2008
10/23/2008US20080257609 Pneumatically Reversible Ram Boring Device
10/22/2008CN201137462Y Multifunctional impact type drilling machine
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
10/16/2008US20080251297 Passive and active up-drill features on fixed cutter earth-boring tools and related methods
10/08/2008CN201129139Y Perforator
10/01/2008CN101275458A Reverse circulation construction technique and apparatus of single rope impact drill
09/2008
09/25/2008WO2008083210A3 Magnetically coupled safety valve with satellite outer magnets
09/23/2008US7426966 Apparatus for imparting relative movement between an oscillating member and a rail
09/23/2008US7426965 Power transmission unit of an impactor, a hydraulic jet impactor and the application thereof
09/18/2008US20080223618 Upright tank jet system
09/17/2008EP1461187B1 Method and apparatus for monitoring operation of percussion device
09/12/2008WO2008109522A1 High productivity core drilling system
09/12/2008CA2679933A1 High productivity core drilling system
09/11/2008US20080217038 Percussion adapter for positive displacement motors
09/10/2008CN101262163A An electric harmonic reciprocating line motion impact device
09/09/2008US7422073 Ground working implement and method for introducing a working element into the ground
09/03/2008EP1963609A1 Damping and drilling machine including such a damping device
09/03/2008EP1963052A1 Pulse generator and impulse machine for a cutting tool
09/03/2008CN201110124Y Air hammer for air drilling
09/02/2008US7419015 Rock drilling machine and axial bearing
09/02/2008CA2494283C Tensioning system for production tubing in a riser at a floating installation for hydrocarbon production
08/2008
08/28/2008WO2008103095A1 Method in respect of a percussive device, percussive device and rock drilling machine
08/28/2008CA2677827A1 Method in respect of a percussive device, percussive device and rock drilling machine
08/27/2008EP1339938B1 Boring apparatus
08/27/2008CN201106409Y Two-stage propulsion combined oil cylinder of drilling machine
08/20/2008CN100412308C Drilling impeller without drilling rod pulling force
08/19/2008CA2470653C Rotary support table
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