| Patents for E21B 10 - Drill bits (19,464) |
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| 02/07/2008 | US20080029312 Indenting Member for a Drill Bit |
| 02/07/2008 | US20080029311 Unibit with replacement blade |
| 02/07/2008 | US20080029310 Particle-matrix composite drill bits with hardfacing and methods of manufacturing and repairing such drill bits using hardfacing materials |
| 02/07/2008 | US20080029309 Blade Assembly Especially for an Ice Auger or Like |
| 02/07/2008 | US20080029308 Roller Cone Drill Bits With Optimized Cutting Zones, Load Zones, Stress Zones And Wear Zones For Increased Drilling Life And Methods |
| 02/07/2008 | US20080029268 Flow Diverter |
| 02/07/2008 | US20080028891 Molds and methods of forming molds associated with manufacture of rotary drill bits and other downhole tools |
| 02/06/2008 | CN201016298Y Skidding type hole enlarge annular tube following drill jig |
| 02/06/2008 | CN201016276Y Integral diamond roof-bolt drilling head |
| 02/06/2008 | CN201016275Y Inclined surface rock drill |
| 02/06/2008 | CN101120155A Integrated magnetic ranging tool |
| 02/06/2008 | CN101117883A Design method of PDC drill bit internal nozzle structure |
| 02/05/2008 | US7325633 Rock drill bit and a thread joint therefor |
| 02/05/2008 | US7325632 Nozzle bore for PDC bits |
| 02/05/2008 | US7325630 Hole opener |
| 02/05/2008 | CA2451825C Polycrystalline diamond with improved abrasion resistance |
| 02/05/2008 | CA2337930C Woven and packed composite constructions |
| 01/31/2008 | WO2008014003A2 Polycrystalline superabrasive composite tools and methods of forming the same |
| 01/31/2008 | WO2008011729A1 Electromagnetic energy assisted drilling system and method |
| 01/31/2008 | US20080023231 Superabrasive element comprising ultra-dispersed diamond grain structures, structures utilizing same, and methods of manufacture |
| 01/31/2008 | US20080023230 Polycrystalline superabrasive composite tools and methods of forming the same |
| 01/31/2008 | US20080023225 Wear indication apparatus and method |
| 01/31/2008 | CA2659125A1 Electromagnetic energy assisted drilling system and method |
| 01/31/2008 | CA2658363A1 Helical chisel insert for rock bits |
| 01/30/2008 | CN201013246Y Triangular jet nozzle for drilling exploration bit |
| 01/30/2008 | CN201013245Y PDC drilling bit inserted with knifing control element |
| 01/30/2008 | CN201013244Y Mine rocking cutting pricker |
| 01/30/2008 | CN201013243Y Oil drilling bit with regular rake teeth and negative rake teeth on the same drill bit |
| 01/30/2008 | CN201013242Y Directional drilling bit |
| 01/30/2008 | CN201013234Y Structure of drilling punching machine |
| 01/30/2008 | CN201013233Y Pneumatic hammer down-hole concentric tube drill |
| 01/30/2008 | CN100365148C 复合材料 Composites |
| 01/30/2008 | CN100364742C Punching tool |
| 01/30/2008 | CN100364741C Drilling tool |
| 01/29/2008 | US7323049 synthesizing superabrasive particles, wherein crystalline seeds can be arranged in a predetermined pattern; high yield of high quality industrial particles and a narrow distribution of particle sizes |
| 01/24/2008 | WO2008010960A1 Cemented tungsten carbide rock bit cone |
| 01/24/2008 | WO2007133739A3 Reaming tool suitable for running on casing or liner and method of reaming |
| 01/24/2008 | US20080019786 Cutting elements and bits incorporating the same |
| 01/24/2008 | US20080017421 Diamond impregnated bits using a novel cutting structure |
| 01/24/2008 | US20080017419 Cutting element apparatuses, drill bits including same, methods of cutting, and methods of rotating a cutting element |
| 01/24/2008 | CA2595048A1 Cutter geometry for increased bit life and bits incorporating the same |
| 01/23/2008 | EP1527251B1 Cutting tools with two-slope profile |
| 01/23/2008 | CN201011297Y Chip discharging structure of tricone roller bit |
| 01/23/2008 | CN101111659A Roller reamer |
| 01/23/2008 | CN101109270A Three teeth roller bit for mining |
| 01/22/2008 | US7321293 Integrated magnetic ranging tool |
| 01/22/2008 | US7320375 Split cone bit |
| 01/22/2008 | US7320373 One-step directional coring or drilling system |
| 01/20/2008 | CA2776346A1 Method of selecting drill bits |
| 01/20/2008 | CA2594012A1 Method of selecting drill bits |
| 01/17/2008 | WO2008008415A1 Excluder ring for earth-boring bit |
| 01/17/2008 | WO2008006170A1 A pdc drag bit |
| 01/17/2008 | WO2008006146A1 A roller reamer |
| 01/17/2008 | WO2007140010A3 Cutting structure for earth-boring bit to reduce tracking |
| 01/17/2008 | WO2007127899A3 Molds and methods of forming molds associated with manufacture of rotary drill bits and other downhole tools |
| 01/17/2008 | US20080014048 Anchoring drill bit, system and method of anchoring |
| 01/17/2008 | US20080011522 Retaining Element for a Jack Element |
| 01/17/2008 | US20080011521 Retaining Element for a Jack Element |
| 01/17/2008 | US20080011519 Cemented tungsten carbide rock bit cone |
| 01/17/2008 | US20080011518 Excluder ring for earth-boring bit |
| 01/17/2008 | US20080011517 Entrainment Fluid Channeling Device for a Down-Hole Drill String |
| 01/16/2008 | EP1689966B1 Nozzle unit and method for excavating a hole in an object |
| 01/16/2008 | CN201007185Y Compound cavern completion tool |
| 01/16/2008 | CN101105116A Reamer bit structure |
| 01/16/2008 | CN101105115A Waterpower pulse cavitation jet well drilling device, method and drill bit |
| 01/15/2008 | US7318492 Rotary drill bit |
| 01/15/2008 | CA2457229C Method for making a trench wall in the ground, trench wall cutter and trench wall cutting device |
| 01/15/2008 | CA2443056C Roof bit carbide blade |
| 01/15/2008 | CA2343947C Through-drill string conveyed logging system |
| 01/10/2008 | WO2008006005A2 Injection system and method |
| 01/10/2008 | WO2008005717A2 Downhole abrading tool having taggants for indicating excessive wear |
| 01/10/2008 | WO2008005714A2 Downhole abrading tools having a hydrostatic chamber and uses therfor |
| 01/10/2008 | WO2008004934A1 E text as een esta s e y t s ut o ty to rea as o ows: holder member, grinding machine and method for grinding a rock drill bit |
| 01/10/2008 | WO2007089590A3 Polycrystalline abrasive composite cutter |
| 01/10/2008 | US20080006448 Modified Cutters |
| 01/10/2008 | US20080006447 Roller cone drill bit that includes components with planar reference surfaces for gauging and inspection |
| 01/10/2008 | US20080006446 Cutters for downhole cutting devices |
| 01/09/2008 | EP1875032A1 A drilling tool |
| 01/09/2008 | EP1774132B1 A drill bit |
| 01/09/2008 | CN201003375Y Concrete filling pile machine boring bar head |
| 01/09/2008 | CN201003374Y Ball tooth, bevel prick tooth impact drill bit |
| 01/09/2008 | CN201003373Y Enlarged prestressed ground anchor pore-forming reamer |
| 01/09/2008 | CN101100930A Surface strengthening steel tooth wheel and manufacturing method thereof |
| 01/09/2008 | CN101100929A Bottom enlarging basket bucket |
| 01/08/2008 | US7316281 Two-cone drill bit with enhanced stability |
| 01/08/2008 | US7316279 Polycrystalline cutter with multiple cutting edges |
| 01/08/2008 | US7316277 Bottom hole assembly |
| 01/08/2008 | CA2405970C Expandable bit |
| 01/03/2008 | WO2004101943A3 Underreamer |
| 01/03/2008 | US20080000695 Grease filling arrangement in a cutter for a boring head |
| 01/03/2008 | US20080000693 Steerable rotary directional drilling tool for drilling boreholes |
| 01/02/2008 | CN200999593Y High carcass stop-off strip diamond impregnated bit makedrill |
| 01/02/2008 | CN200999592Y Gyroscope drill and piling machine with gyroscope drill |
| 01/02/2008 | CN200999591Y Self-sharpening drill for rotating well drilling |
| 01/02/2008 | CN200999590Y Belt cable pore-creating drill device capable of taking-out anchorage cable |
| 01/02/2008 | CN200999589Y Cast iron core type casing tube drill |
| 01/02/2008 | CN100359127C Attachment means for drilling equipment |
| 01/02/2008 | CN100359126C Cutter with convex tooth-tip |
| 01/01/2008 | US7314102 Percussion or hammer drill |
| 01/01/2008 | US7314099 Selectively actuatable expandable underreamer/stablizer |