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)
07/2010
07/29/2010US20100187016 Percussion Hammer Bit With a Driver Sub Including a Guide Sleeve Portion
07/28/2010CN101787852A Impact drill powered by hammering and using method thereof
07/22/2010WO2010082871A1 Damping device for percussion device, percussion device and drilling machine
07/21/2010CN101781969A Self-rotating air hammer
07/20/2010CA2589874C Inline bladder-type accumulator for downhole applications
07/20/2010CA2550801C Drilling equipment
07/07/2010EP2203622A2 Downhole seal bore repair device
07/06/2010US7748478 Percussion drilling assembly and hammer bit with an adjustable choke
06/2010
06/30/2010CN101761309A Stoper
06/30/2010CN101187291B Multifunctional impact type well driller
06/29/2010US7743852 Auger stabilizer
06/29/2010US7743850 Apparatus and method for reducing required torque
06/24/2010US20100155096 Fail-resistant hammer assembly for a valveless percussive drill
06/23/2010CN101341005B Pulse generator and impulse machine for a cutting tool
06/22/2010CA2647838A1 Impact adapter for a rock drill
06/17/2010WO2010068751A2 Vibratory drill head mounting and rotation coupling system
06/10/2010US20100139979 Percussion Drilling Assembly With Annular Locking Member
06/09/2010CN101725321A Mechanical solum horizontal puncher
06/02/2010EP2191095A1 Magnetic hammer
06/02/2010CN201496093U Self suction pressure-generation dust control device for reciprocating drill
06/02/2010CN101319595B Jet stream type impactor for oil gas well drilling
06/01/2010US7726414 Hollow piston hammer device with air equilibration and idle openings
05/2010
05/27/2010WO2010058073A1 Rock drilling machine
05/27/2010WO2010058072A1 Rock drilling machine and axial bearing module
05/27/2010US20100126772 Hydro-percussive mechanisims for drilling systems
05/27/2010CA2743923A1 Rock drilling machine and axial bearing module
05/26/2010EP2188482A1 Tool with selectively-biased member having an adjustment feature
05/19/2010CN101189078B Percussive device for a rock drilling machine, method for achieving a reciprocating percussive piston movement and rock drilling machine
05/19/2010CN101189077B Valve device for a percussion device and percussion device for a rock drilling machine
05/19/2010CN101180162B Impulse generator, hydraulic impulse tool and method for producing impulses
05/19/2010CN101050688B Airleg rock drill
05/18/2010US7717190 Method for controlling percussion device, software production, and percussion device
05/12/2010CN201460709U Geological drill rod exploration machine
05/12/2010CN201460708U High-safety novel electric rock drilling machine
05/12/2010CN201460707U Lubricant oil passage nozzle structure of hydraulic rock drill
05/12/2010CN101705784A Hole bottom power-driven impactor control system
05/11/2010US7712552 Water hammer
04/2010
04/28/2010CN201443301U Novel drilling tool of petroleum horizontal multilateral well
04/14/2010CN1920237B Oil frog free energy-saving pusher leg drill
04/14/2010CN101694147A High water-based hydraulic rock drill
04/13/2010US7694748 Rock breaking machine and lubricating method
04/07/2010EP1458949B1 Rotary support table
03/2010
03/31/2010CN201433708Y Cylinder body and cylinder cover of jet type impactor
03/31/2010CN201433707Y Novel earth oil down-hole horizontal drilling assembly
03/24/2010CN101680266A Fuel-powered rock breaker
03/17/2010CN101675205A High productivity core drilling system
03/16/2010US7677329 Method and device for controlling drilling fluid pressure
03/11/2010WO2010026457A1 Assemblies for the purification of a reservoir or process fluid
03/11/2010US20100059284 Down-the-hole drill hammer having a reverse exhaust system and segmented chuck assembly
03/04/2010WO2009151962A3 Wellbore instruments using magnetic motion converters
03/04/2010US20100051348 Rock drilling equipment and a method in association with same
03/03/2010CN201416389Y Hammer drill silencing cap
02/2010
02/24/2010CN201412218Y Single power double-side output device
02/24/2010CN201412059Y Gearbox composite bearing structure of hydraulic rock drill
02/11/2010US20100032177 Rock drilling method and rock drilling machine
02/04/2010US20100025114 PCD Percussion Drill Bit
02/04/2010US20100025108 Method for drilling rock
01/2010
01/21/2010US20100012380 Percussion Drilling Assembly and Hammer Bit with an Adjustable Choke
01/20/2010CN201386505Y Novel valve-type difunctional hydraulic impactor
01/20/2010CN100582432C Water hammer
01/19/2010CA2452614C Impact device
01/13/2010CN201381800Y Impact drilling and plugging device
01/13/2010CN101627176A Em-guided drilling relative to an existing borehole
01/10/2010CA2670999A1 Pneumatic drill
12/2009
12/31/2009US20090321099 Percussion device, drilling machine including such a percussion device and method for controlling such a percussion device
12/17/2009WO2009151962A2 Wellbore instruments using magnetic motion converters
12/17/2009US20090308627 Percussion device and rock drilling machine
12/16/2009EP2132395A1 High productivity core drilling system
12/10/2009WO2009148376A1 Device and method for sensing a parameter related to a position of a displaceable element in a rock drill
12/10/2009WO2009147698A1 Buffer device of excitation device
12/10/2009US20090301744 Jet Hammer
12/10/2009DE10237407B4 Hydraulischer Schlaghammer mit Leerschlagabschaltung Hydraulic impact hammer with blank firing shutdown
12/09/2009CN201358707Y Pump suction direct and reverse circulation percussion drill
12/09/2009CN100566948C Method for breaking rock
12/03/2009US20090294180 Percussion drilling assembly having a floating feed tube
11/2009
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
11/18/2009EP2118427A1 Method in respect of a percussive device, percussive device and rock drilling machine
11/18/2009CN101581195A Environmental-friendly downhole hammer rock drilling machine
11/05/2009US20090272555 Pulse machine, method for generation of mechanical pulses and rock drill and drilling rig comprising such pulse machine
11/03/2009CA2665298A1 Pneumatic impact tool
11/03/2009CA2578352C A drilling apparatus having in-line extending wings and driving method thereof
10/2009
10/14/2009CN201326415Y Direct-push sampling drill with hydraulic vibrating impacter
10/07/2009CN201321817Y Silencing cover for high-speed rock drill
10/07/2009CN201321816Y Air-leg type high-speed rock drill
10/07/2009CN201321815Y Shock-absorbing handle for high-speed rock drill
10/07/2009CN201321814Y High-speed rock drill with long service life
09/2009
09/30/2009CN201318121Y Perforator
09/24/2009CA2660101A1 Pneumatic impact piercing tool
09/23/2009CN101538856A Construction method of anchor rod with expanded head
09/23/2009CN100542753C Pressure-fluid-operated percussion device
09/16/2009EP2099999A1 Rock drilling equipment and a method in association with same
09/09/2009EP1558831B1 Method and apparatus for varying the density of drilling fluids in deep water oil drilling applications
09/09/2009CN101529043A Down-the-hole hammer drill
09/08/2009CA2414091C Method of opening joints between drilling components, and rock drill
09/02/2009CN201301662Y Novel churn drilling tool for drilling loose stratum and pebble-gravel stratum
09/01/2009US7581599 Percussive device for a rock drilling machine, method for achieving a reciprocating piston movement and rock drilling machine
08/2009
08/26/2009EP1606487B1 Pneumatic perforator with independent rotation of the drill
08/19/2009CN201292761Y High wind pressure downhole air hammer
08/19/2009CN101512097A Drilling equipment
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 ... 21