| Patents for E21B 10 - Drill bits (19,464) |
|---|
| 03/25/2009 | CN101395335A Polycrystalline abrasive composite cutter |
| 03/25/2009 | CN101392634A Reverse circulation impactor |
| 03/25/2009 | CN101392631A Steel tooth bit with conical teeth |
| 03/25/2009 | CN101391402A Brazed diamond tools and methods for making the same |
| 03/24/2009 | US7506705 Method of producing downhole drill bits with integral carbide studs |
| 03/24/2009 | US7506703 Drilling and hole enlargement device |
| 03/24/2009 | US7506698 Cutting elements and bits incorporating the same |
| 03/24/2009 | US7506697 Recoil auger with clutch bearing |
| 03/24/2009 | CA2432217C Flightless rock auger for use with pressure drills with quick attachment and method of use |
| 03/19/2009 | WO2009034740A1 Digging tool, digging bit, and device |
| 03/19/2009 | WO2006110461A3 Drilling with casing |
| 03/19/2009 | US20090071727 Ultra-hard composite constructions comprising high-density diamond surface |
| 03/19/2009 | US20090071726 Ultrahard composite constructions |
| 03/19/2009 | US20090071725 Percussion Hammer for Enlarging Drilled Holes |
| 03/19/2009 | US20090071724 Drilling systems including fiber-containing diamond-impregnated cutting tools |
| 03/19/2009 | US20090071723 Drill with a centering drill insert, and a method of using a drill with a centering drill insert, and the insert therefor |
| 03/19/2009 | DE102007044095A1 Bohrwerkzeug mit Bohrkrone Drill with drill bit |
| 03/18/2009 | EP2035649A1 Stabilizer for drill strings |
| 03/18/2009 | EP2035646A1 Multi-sectional percussive drill bit assembly |
| 03/18/2009 | CN201209404Y Diamond compact of built-in buffer layer |
| 03/18/2009 | CN101387187A Bionic non-smooth spiral drill |
| 03/12/2009 | WO2009032468A1 Method and apparatus for rotary mining |
| 03/12/2009 | WO2009030052A1 Drill bit |
| 03/12/2009 | US20090066149 Pick with Carbide Cap |
| 03/12/2009 | US20090065263 Drag bit with utility blades |
| 03/12/2009 | US20090065262 Drill bit |
| 03/12/2009 | US20090065261 Cutting elements of gage row and first inner row of a drill bit |
| 03/12/2009 | US20090065260 Hardfacing containing fullerenes for subterranean tools and methods of making |
| 03/12/2009 | US20090065256 Method and Rock Drilling Rig for Hole Drilling |
| 03/12/2009 | CA2698169A1 Drill bit |
| 03/12/2009 | CA2697838A1 Method and apparatus for rotary mining |
| 03/11/2009 | EP2032793A1 Rotary rock bit with hardfacing to reduce cone erosion |
| 03/11/2009 | EP2032792A1 Multi-sectional percussive drill bit assembly |
| 03/11/2009 | EP2032243A1 Superabrasive materials and methods of manufacture |
| 03/11/2009 | CN201206429Y Punch special for sand area |
| 03/11/2009 | CN201206428Y Stone extrusion drill |
| 03/11/2009 | CN201206427Y Expanding bit for well drilling |
| 03/11/2009 | CN201206426Y Staged drill for drilling rubber plug |
| 03/11/2009 | CN101384792A Seal insert ring for roller cone bits |
| 03/11/2009 | CN101384791A System, method, and apparatus for reducing residual stress in as-welded roller cone bit ball plug welds |
| 03/11/2009 | CN101382045A Three-cone bit for horizontal well and hard formation well |
| 03/11/2009 | CN101382044A Barrel type alloy drill |
| 03/11/2009 | CN101382043A Combined drill for drilling with casing |
| 03/05/2009 | WO2009029800A1 Apparatus and method for drilling wellbores that utilize a detachable reamer |
| 03/05/2009 | WO2009029649A2 Chamfered edge gage cutters, drill bits so equipped, and methods of cutter manufacture |
| 03/05/2009 | WO2009029538A1 Chuck and bit assembly for reverse circulation drill |
| 03/05/2009 | WO2009012196A3 Roller cone bit bearing, and bearing materials |
| 03/05/2009 | US20090057033 High energy cutting elements and bits incorporating the same |
| 03/05/2009 | US20090057031 Chamfered edge gage cutters, drill bits so equipped, and methods of cutter manufacture |
| 03/05/2009 | US20090057030 Mining claw bit |
| 03/05/2009 | US20090057013 Method and apparatus for rotary mining |
| 03/05/2009 | CA2695620A1 Chamfered edge gage cutters, drill bits so equipped, and methods of cutter manufacture |
| 03/05/2009 | CA2639311A1 Mining claw bit |
| 03/04/2009 | EP2029855A1 Pcd cutters with enhanced working surfaces adjacent a cavit |
| 03/04/2009 | EP1934426B1 Under-reaming and stabilizing tool for use in a borehole and method for using same |
| 03/04/2009 | CN201202408Y Polycrystalline diamond hard alloy composite sheet grooving on surface |
| 03/04/2009 | CN201202407Y Polycrystalline diamond composite sheet with special-shaped structure feature |
| 03/04/2009 | CN201202406Y Surface layer scraping knife spiral bit |
| 03/04/2009 | CN201202405Y Mash gas pumping drilling orifice expanding bit |
| 03/04/2009 | CN201202404Y Seal device for petroleum drill bearing |
| 03/04/2009 | CN201202403Y Well drilling head |
| 03/04/2009 | CN201201075Y Superhard material soldering appliance |
| 03/04/2009 | CN101377119A PDC drill |
| 03/04/2009 | CA2639315A1 A cutting element having a self sharpening tip |
| 03/03/2009 | US7497282 Drill bit having radially extending cutting bits on radial legs |
| 03/03/2009 | US7497281 Roller cone drill bits with enhanced cutting elements and cutting structures |
| 03/03/2009 | US7497280 Abrasive-impregnated cutting structure having anisotropic wear resistance and drag bit including same |
| 03/03/2009 | CA2565201C Drill bit with canted gage insert |
| 03/03/2009 | CA2406731C Drill bit, hard member, and bit body |
| 02/26/2009 | WO2009026120A1 Roller cone bit provided with anti-tracking cutting element spacing |
| 02/26/2009 | WO2009026118A1 Corrosion protection for head section of earth boring bit |
| 02/26/2009 | WO2009024752A2 Pdc cutter with stress diffusing structures |
| 02/26/2009 | WO2009023930A1 Down-hole hammer drill |
| 02/26/2009 | WO2008076625A3 System for steering a drill string |
| 02/26/2009 | US20090050371 Pulsed Electric Rock Drilling Apparatus with Non-Rotating Bit and Directional Control |
| 02/25/2009 | EP2027357A2 Expandable downhole tool |
| 02/25/2009 | CN201198737Y Hard alloy wedge chisel drill bit |
| 02/25/2009 | CN201198736Y High wind pressure impacter |
| 02/24/2009 | US7493973 Polycrystalline diamond materials having improved abrasion resistance, thermal stability and impact resistance |
| 02/24/2009 | US7493972 Superabrasive compact with selected interface and rotary drill bit including same |
| 02/24/2009 | US7493971 Concentric expandable reamer and method |
| 02/24/2009 | CA2424784C Cutting insert for percussion drill bit |
| 02/19/2009 | WO2009023706A1 Earth-boring tools having pockets for receiving cutting elements and methods for forming earth-boring tools including such pockets |
| 02/19/2009 | WO2009022146A1 Motor bit system |
| 02/19/2009 | WO2009022145A1 Compliantly coupled cutting/gauge pad system |
| 02/19/2009 | WO2009022116A1 Drill bit gauge pad control |
| 02/19/2009 | WO2008157704A3 Process of drill bit manufacture |
| 02/19/2009 | WO2008157371A4 Interchangeable bearing blocks for drill bits, and drill bits including same |
| 02/19/2009 | WO2008151313A9 Cutting tools and methods of making the same |
| 02/19/2009 | US20090045585 Rock bit having a seal gland with a conical sealing surface |
| 02/19/2009 | US20090044986 Drill, a drill assembly, and a tool head for a cutting tool |
| 02/19/2009 | US20090044985 System, method, and apparatus for predicting tracking by roller cone bits and anti-tracking cutting element spacing |
| 02/19/2009 | US20090044984 Corrosion Protection for Head Section of Earth Boring Bit |
| 02/19/2009 | US20090044663 Earth-boring tools having pockets for receiving cutting elements and methods for forming earth-boring tools including such pockets |
| 02/19/2009 | CA2695581A1 Earth-boring tools having pockets for receiving cutting elements and methods for forming earth-boring tools including such pockets |
| 02/18/2009 | EP2024599A1 Modular fixed cutter earth-boring bits, modular fixed cutter earth-boring bit bodies, and related methods |
| 02/18/2009 | CN201196027Y Roller bit with roller cone falling prevention function |
| 02/18/2009 | CN201196026Y Core extraction drilling bit for drilling industry |
| 02/18/2009 | CN101368473A Steering mechanism of impact pike |
| 02/12/2009 | WO2009020901A1 Earth-boring tools having particle-matrix composite bodies, methods for welding particle-matrix composite bodies and methods for repairing particle-matrix composite bodies |