| Patents for E21B 3 - Rotary drilling (4,061) |
|---|
| 01/30/2013 | CN202706906U Drilling machine for tunnels |
| 01/30/2013 | CN202706905U Double drill deeply-planted afforestation drilling machine |
| 01/30/2013 | CN102900391A Drilling bucket and rotary drilling rig applying drilling bucket |
| 01/30/2013 | CN102900375A Rotary drilling rig and rotary drill rod thereof |
| 01/30/2013 | CN102900360A Combined type digging and drilling machine |
| 01/30/2013 | CN102900359A Integrated rotating disc driving box system |
| 01/30/2013 | CN102900358A Rotary plate driving box integration system |
| 01/30/2013 | CN102900357A Rotary drilling rig and brine collecting method |
| 01/30/2013 | CN102900356A Rotating disc driving device |
| 01/30/2013 | CN102044129B Electric control alarm device for preventing drilling rod-dropping accident of rotary drilling rig |
| 01/25/2013 | DE202012010216U1 S-ARM (Selbst-Aufrichtende Rotationsmaschine) S-ARM (self-righting rotary machine) |
| 01/23/2013 | CN202689924U Drilling device of bottom plate of coal mine tunnel |
| 01/23/2013 | CN102889059A Mast supporting buffering device and rotary drilling rig using same |
| 01/23/2013 | CN102889054A 动力头和旋挖钻机 Power head and rotary drilling rig |
| 01/23/2013 | CN102220836B Rotating power head of coaxial space movable tooth transmission drill |
| 01/23/2013 | CN101235704B Rotary drive assembly for a drill rod |
| 01/22/2013 | CA2675531C System and method for performing oilfield drilling operations using visualization techniques |
| 01/17/2013 | WO2013007609A1 A driving head for telescopic drill rods and machine comprising said head |
| 01/17/2013 | US20130014996 Braking device for an auger |
| 01/16/2013 | CN202674240U Transmission case device of workover rig positive and negative rotation |
| 01/16/2013 | CN102878274A Rotary drilling rig and sealing device of power head case of rotary drilling rig |
| 01/16/2013 | CN102877786A Method and device for improving pore-forming efficiency of rotary drilling rig |
| 01/16/2013 | CN102877785A 动力头和旋挖钻机 Power head and rotary drilling rig |
| 01/16/2013 | CN102877784A Power box and rotary drilling rig |
| 01/16/2013 | CN102877783A Rotary drilling rig and hydraulic rotation system thereof |
| 01/16/2013 | CN102877782A Rotary drilling rig and bittern collecting method |
| 01/16/2013 | CN101858196B Low gravity center three-axle spiral drilling machine and drilling method thereof |
| 01/10/2013 | WO2012109090A3 Helical drilling apparatus, systems, and methods |
| 01/10/2013 | US20130008718 Control system and interface for a tunneling apparatus |
| 01/10/2013 | US20130008682 Battery for a power tool |
| 01/09/2013 | CN202659140U Suspending type crash barrier spiral drilling machine |
| 01/09/2013 | CN102865037A Gear shifting mechanism of power head with adjustable multi-level rotational speed |
| 01/08/2013 | CA2487218C Top drive assembly |
| 01/03/2013 | WO2013000024A1 Fluid drilling head with powered swivel assembly |
| 01/02/2013 | CN202645600U Hydraulic drilling machine device for comprehensive mechanized rock-drifting machine set |
| 01/02/2013 | CN202645423U Power transmission mechanism for rotary drilling rig drilling stem and rotary drilling rig |
| 01/02/2013 | CN202645422U Rapid drilling device special for sand cone method |
| 01/02/2013 | CN102852456A Rock-core drill |
| 01/02/2013 | CN101787876B Rollover protection system of rotary drilling rig |
| 01/02/2013 | CN101655000B Full-hydraulic top-drive truck-mounted drilling rig |
| 12/27/2012 | WO2012177275A1 Powered and manual auger and method of drilling a hole using the auger |
| 12/27/2012 | WO2012175658A2 Tubular device with radiofrequency communication for well head |
| 12/26/2012 | CN202629038U Cooling system for power head of rotary drilling rig |
| 12/26/2012 | CN202627984U Drill rod for rotary drilling rig and rotary drilling rig with drill rod |
| 12/26/2012 | CN202627964U Multi-function full-automatic paying-off, pole-erecting, and hole-digging all-in-one machine |
| 12/26/2012 | CN202627958U Locked type hole digging pile machine |
| 12/26/2012 | CN202627957U Rotary drilling rig with adjustable type water box ancillary counterweight |
| 12/26/2012 | CN202627956U Adjustable rotary drilling rig with lower mast |
| 12/26/2012 | CN102031929B PLC (Programmable Logic Controller) controlled variable-frequency piling machine |
| 12/26/2012 | CN101929307B Tackle arrangement for power swivel of well drilling machine |
| 12/25/2012 | US8336614 Movable rotary well drilling rig |
| 12/19/2012 | CN202611677U Control system of drilling machine and long spiral drilling machine with control system |
| 12/19/2012 | CN202611584U Portable well drilling machine |
| 12/19/2012 | CN202611583U Power head for drilling rig |
| 12/19/2012 | CN202611582U Motor parallel operation device for drilling machine |
| 12/19/2012 | CN202611581U Top-drive drilling machine |
| 12/19/2012 | CN101718166B Translational power head of all-hydraulic core drilling machine |
| 12/18/2012 | US8333253 Sector divided two-way outlet flow deflector unit for a pneumatic power tool |
| 12/12/2012 | CN202596570U Base column pile dry-type integrated soil taking apparatus |
| 12/12/2012 | CN102817556A Multifunctional power head of drilling machine |
| 12/11/2012 | US8330426 Charging system for electric power tool, battery pack for electric power tool, and battery charger for electric power tool |
| 12/05/2012 | EP2529074A1 Device and method for drilling with continous tool rotation and continous drilling fluid supply |
| 12/05/2012 | EP2529073A1 Rotary table device for a pipe string |
| 12/05/2012 | CN202578507U Shallow hole drilling machine |
| 12/05/2012 | CN202578492U Rotary rock drilling power device suitable for hard stratums |
| 12/05/2012 | CN202578491U Power head damping device and rotary drilling rig |
| 12/05/2012 | CN202578490U Power head for long spiral drilling machine |
| 12/05/2012 | CN202578489U Drive sleeve for power head of rotary drilling rig |
| 12/05/2012 | CN202578488U Tube well hole-forming device |
| 12/05/2012 | CN202578487U Counterweight telescoping mechanism for rotary drilling rig |
| 12/05/2012 | CN202575815U Steel wire rope guide device and rotary drilling rig provided with same |
| 12/05/2012 | CN102168558B Self-walking lifting full-hydraulic auger coal mining machine |
| 11/29/2012 | US20120298004 Mining vehicle and method for its energy supply |
| 11/28/2012 | CN202560948U Novel all-hydraulic drill power transmission mechanism |
| 11/28/2012 | CN202560094U Airborne anti-outburst drilling machine locking apparatus |
| 11/28/2012 | CN202560093U A rotary digging drilling machine having soil-discharging push plate capable of being repositioned automatically |
| 11/28/2012 | CN102803643A Device and method for drilling with continous tool rotation and continous drilling fluid supply |
| 11/28/2012 | CN102803642A Method and system for integrating sensors on an autonomous mining drilling rig |
| 11/28/2012 | CN102797417A Oil cylinder support structure with H-shaped frame |
| 11/28/2012 | CN102155156B High-speed hydraulic drilling machine |
| 11/28/2012 | CN102134964B Double-wall spindle power head for core drill |
| 11/28/2012 | CN102022077B Drilling device for underground embedded pipe orifice well of soil source heat pump system |
| 11/21/2012 | CN202544743U Drilling machine |
| 11/21/2012 | CN202544741U Door-shaped drive drilling machine with twin tower teeth |
| 11/21/2012 | CN202544740U Power head for vehicle-mounted drilling machine and vehicle-mounted coalbed gas drilling machine using same |
| 11/21/2012 | CN202544739U Upper trolley rotary braking device of rotary drilling rig |
| 11/21/2012 | CN202544738U Drilling arm assembly of multifunctional road pile drilling machine |
| 11/21/2012 | CN202544737U Pressurization type drilling machine |
| 11/21/2012 | CN102787818A Small motor-driven geological core driller |
| 11/21/2012 | CN102787802A Power head for geophysical prospecting driller |
| 11/20/2012 | US8312937 Battery for a power tool with a battery pack ejector |
| 11/14/2012 | CN202531017U Microdrill for seismic prospecting rectifier |
| 11/14/2012 | CN202531016U Rotary impact screw drill |
| 11/14/2012 | CN202531015U Geological engineering driller |
| 11/14/2012 | CN102777137A Centering and guide clamping integrated type power head |
| 11/14/2012 | CN102086755B Continuous oil pipe-based guide high-pressure jet drilling system |
| 11/14/2012 | CN101737009B Geometry steerable drilling system driven by liquid and gas phase drilling media rotary disc |
| 11/13/2012 | US8307917 Downhole injector system for CT and wireline drilling |
| 11/07/2012 | CN202520313U Hand-held pneumatic type auger |
| 11/07/2012 | CN102767362A Depth-detecting device for rotary drilling rig and rotary drilling rig with same |