| Patents for E21B 12 - Accessories for drilling tools (993) |
|---|
| 05/29/2013 | CN202954755U Pneumatic clamping tile of multifunctional drill stem |
| 05/29/2013 | CN202954736U High-performance sand prevention screw drilling tool |
| 05/23/2013 | WO2013075033A1 Self-centering clamping device |
| 05/23/2013 | US20130126245 Annular Disposed Stirling Heat Exchanger |
| 05/22/2013 | CN202946026U Linkage structure of boring machine power head and guide rails |
| 05/22/2013 | CN202946025U Drill rod splash-proof device |
| 05/22/2013 | CN102305023B Automatic mud removal mechanical device with spiral drill rod rotating N 360 degrees |
| 05/21/2013 | CA2795090A1 Annular disposed stirling heat exchanger |
| 05/08/2013 | CN202926218U Positioning device for drilling |
| 05/02/2013 | WO2013036333A3 Dynamic self-cleaning downhole debris reducer |
| 04/25/2013 | WO2012177442A3 Coatings for welbore tools, components having such coatings, and related methods |
| 04/17/2013 | CN202882773U Long spiral drilling machine and automatic soil cleaning device thereof |
| 04/17/2013 | CN202882772U Sleeve cap for full-casing full-rotary drill |
| 04/17/2013 | CN202882771U Drilling tool for rotary drilling rig and rotary drilling rig |
| 04/11/2013 | WO2013015966A3 Damping assembly for downhole tool deployment and method thereof |
| 04/10/2013 | CN202866661U Octahedral drill box |
| 04/10/2013 | CN202866656U Drilling machine tool face locating device |
| 04/04/2013 | WO2013006580A3 A system and method for coupling downhole tools |
| 04/03/2013 | CN202852379U Cone drill bit lubrication device |
| 04/03/2013 | CN202850904U Core drilling machine with dust discharge device |
| 04/03/2013 | CN103015907A Cutter bit press-in force control device for fully slewing drilling machine |
| 04/03/2013 | CN103015906A Drag reduction short joint of drilling tool |
| 03/30/2013 | CA2791522A1 Extendable pilot bit for barrel cutter |
| 03/28/2013 | WO2013043555A1 Sensor-enabled cutting elements for earth-boring tools, earth-boring tools so equipped, and related methods |
| 03/28/2013 | WO2012165850A3 Fragment scattering protection apparatus for a brake of an excavator |
| 03/27/2013 | CN202832226U Drilling rig provided with drill pipe cleaning device |
| 03/27/2013 | CN102061888B Impact-resistant screw drill tool |
| 03/27/2013 | CA2790880A1 Borehole tool heat transfer altering system and method, and method of heating borehole fluid |
| 03/21/2013 | WO2012154415A3 Apparatus and method for drilling wellbores based on mechanical specific energy determined from bit-based weight and torque sensors |
| 03/21/2013 | US20130068529 Tool for Removing Drill Cores from Hammer Drill Bits |
| 03/20/2013 | CN202810670U Air-type slag stopping device of drilling machine |
| 03/14/2013 | WO2012173395A3 Drilling system having slot for underwater storage of bop assembly |
| 03/14/2013 | WO2012145637A3 Apparatus and method for tool face control using pressure data |
| 03/13/2013 | CN202788632U Drill tool installed bit |
| 03/13/2013 | CN102966311A Splash prevention device for drill pipe |
| 03/07/2013 | WO2013032343A1 Apparatus for preparation and lubrication of a threaded portion of a drill pipe |
| 03/06/2013 | CN202767894U Washing device of horizontal directional drilling machine |
| 03/06/2013 | CN102953693A Multifunctional drill rod air operated slip |
| 02/27/2013 | CN202755904U Rotary excavating rock-digging bulldozing drilling bucket |
| 02/27/2013 | CN202755903U Valve opening drill with soil stopping mechanism |
| 02/27/2013 | CN202755891U Diving rock inserting drill rig |
| 02/26/2013 | US8386196 Method for determining the wear state |
| 02/20/2013 | CN202745704U Multi-function spiral soil clearer |
| 02/19/2013 | CA2487380C Method of avoiding the need for a scraper run in drill out operations and a downhole drilling motor assembly |
| 02/13/2013 | CN102927426A Bit lubricating device of rotary drill rig |
| 02/12/2013 | US8371397 Feed mechanism for drilling systems |
| 02/07/2013 | WO2013019530A1 Downhole condition alert system for a drill operator |
| 01/31/2013 | WO2013015966A2 Damping assembly for downhole tool deployment and method thereof |
| 01/31/2013 | CA2841070A1 Damping assembly for downhole tool deployment and method thereof |
| 01/29/2013 | US8360167 Composite seal for a hydraulic hammer |
| 01/29/2013 | CA2594606C Method and apparatus for locating faults in wired drill pipe |
| 01/17/2013 | WO2013009715A1 System and method for determining a health condition of wellsite equipment |
| 01/17/2013 | CA2840874A1 System and method for determining a health condition of wellsite equipment |
| 01/10/2013 | US20130008717 Solid state wear tracers for drill bits |
| 01/09/2013 | CN102869849A At-bit evaluation of formation parameters and drilling parameters |
| 01/08/2013 | CA2693839C Downhole applications of composites having aligned nanotubes for heat transport |
| 01/03/2013 | US20130000985 Reconfigurable downhole article |
| 01/02/2013 | CN202645442U Foundation and hole bottom residue removing drilling rig |
| 01/02/2013 | CN102852475A Core drill with cuttings exhauster |
| 12/27/2012 | WO2012177442A2 Coatings for welbore tools, components having such coatings, and related methods |
| 12/27/2012 | WO2012151376A3 Chemical line flush systems |
| 12/26/2012 | CN202627978U 钻具连接器 Drill connector |
| 12/20/2012 | WO2012173395A2 Drilling system having slot for underwater storage of bop assembly |
| 12/19/2012 | CN202611600U Sludge removing mechanical device for spiral drill rod capable of automatically rotating N*360 degrees |
| 12/19/2012 | CN202611594U Special drill head for windowing water-jet radial drilling sleeve pipe |
| 12/12/2012 | CN202596585U Energy-storage protection tool for mechanical drilling tool |
| 12/06/2012 | WO2012165850A2 Fragment scattering protection apparatus for a brake of an excavator |
| 12/06/2012 | WO2012163431A1 Wear indicators for drilling equipment |
| 12/06/2012 | WO2012129217A3 Compact portable auger rack |
| 12/06/2012 | CA2837131A1 Wear indicators for drilling equipment |
| 12/05/2012 | EP2529124A1 Bearing assembly |
| 12/05/2012 | CN202578523U Drill bit base |
| 11/29/2012 | WO2012161987A1 Method and apparatus for joining members for downhole and high temperature applications |
| 11/28/2012 | CN202560109U Soil cleaning apparatus for screw pile driver drilling rod |
| 11/28/2012 | CN101595272B Microtunnelling system and apparatus |
| 11/22/2012 | WO2012112673A3 Method and apparatus for protecting downhole components with inert atmosphere |
| 11/22/2012 | US20120292114 Method and Arrangement for Lubricating Drill Shank of Rock Drilling Machine |
| 11/21/2012 | CN202544755U Anti-drag deep hole fishing drill tool |
| 11/21/2012 | CN102787807A Multifunctional soil cleaner for long spiral drilling machine |
| 11/15/2012 | WO2012154415A2 Apparatus and method for drilling wellbores based on mechanical specific energy determined from bit-based weight and torque sensors |
| 11/08/2012 | WO2012151376A2 Chemical line flush systems |
| 10/26/2012 | WO2012145637A2 Apparatus and method for tool face control using pressure data |
| 10/24/2012 | CN202500499U Long spiral drilling machine mud removing device |
| 10/04/2012 | WO2012134705A2 Single trip liner setting and drilling assembly |
| 10/03/2012 | CN202467674U Chute guide device for drilling tool |
| 10/03/2012 | CN101886525B Breakage-preventing drilling bit |
| 09/27/2012 | WO2012129217A2 Compact portable auger rack |
| 09/27/2012 | CA2824781A1 Compact portable auger rack |
| 09/26/2012 | CN202451065U Drilling tool and rotary drilling machine provided with same |
| 09/26/2012 | CN102691477A Rock debris cleaning device for drilling tool |
| 09/19/2012 | CN102678060A Automatic rotation N*360-degree spiral drill rod desilting mechanical device |
| 09/19/2012 | CN102678059A Energy storage protection tool of mechanical drilling tool |
| 09/13/2012 | WO2011153004A3 Early wear detection |
| 08/30/2012 | WO2012115523A1 Cleaning and doping device for drill pipe and drill collar |
| 08/23/2012 | WO2012112673A2 Method and apparatus for protecting downhole components with inert atmosphere |
| 08/21/2012 | US8245775 Wellbore consolidating tool for rotary drilling application |
| 08/15/2012 | CN202380983U Turbine section for high-speed turbodrill |
| 08/15/2012 | CN202380977U Anti-fatigue short joint for gas drilling column |
| 08/14/2012 | US8240400 Noise-dampening shield structure for rock drilling apparatus |
| 08/08/2012 | EP2483515A1 An apparatus and method for containing fluid or gas released from a pipe |