| Patents for E21B 10 - Drill bits (19,464) |
|---|
| 02/12/2009 | WO2009019999A1 Excavation device |
| 02/12/2009 | WO2008149240A3 Bit for drilling wells and associated drilling method |
| 02/12/2009 | US20090038858 Use of nanosized particulates and fibers in elastomer seals for improved performance metrics for roller cone bits |
| 02/12/2009 | DE10357810B4 Drehbarer Einsatz mit einer elastischen, spielbehafteten Sicherungshülse Rotatable insert with an elastic, with play securing sleeve |
| 02/12/2009 | CA2695520A1 Earth-boring tools having particle-matrix composite bodies, methods for welding particle-matrix composite bodies and methods for repairing particle-matrix composite bodies |
| 02/11/2009 | CN201193484Y Equilibrium PDC drill |
| 02/11/2009 | CN201193483Y PDC drill with double-row cutting tooth |
| 02/11/2009 | CN201193482Y Special cemented carbide |
| 02/11/2009 | CN201193481Y Drill with inner core removable for drilling |
| 02/11/2009 | CN201193480Y Double-flant anchor rod drill |
| 02/11/2009 | CN101363307A Method and apparatus for directional boring under mixed conditions |
| 02/10/2009 | US7488043 Device for manufacturing brushes |
| 02/10/2009 | US7487849 Thermally stable diamond brazing |
| 02/05/2009 | WO2009018427A1 Bonding agents for improved sintering of earth-boring tools, methods of forming earth-boring tools and resulting structures |
| 02/05/2009 | WO2008047218A4 Activating device for a downhole tool |
| 02/05/2009 | US20090032310 Earth-boring tools having particle-matrix composite bodies, methods for welding particle-matrix composite bodies and methods for repairing particle-matrix composite bodies |
| 02/05/2009 | US20090032308 Downhole Tool |
| 02/05/2009 | DE10041911B4 Diamantbohrkrone Diamond core bit |
| 02/05/2009 | CA2694332A1 Bonding agents for improved sintering of earth-boring tools, methods of forming earth-boring tools and resulting structures |
| 02/04/2009 | EP2019905A2 Molds and methods of forming molds associated with manufacture of rotary drill bits and other downhole tools |
| 02/04/2009 | EP2019901A2 Reaming tool suitable for running on casing or liner and method of reaming |
| 02/04/2009 | CN201190537Y Pneumatic expanding bit |
| 02/04/2009 | CN101357401A Diamond thin wall drill tool-tip sintering forming die |
| 02/04/2009 | CN100458097C Percussive drill bit, drilling system comprising such a drill bit and method of drilling a bore hole |
| 02/03/2009 | US7484578 Hole coring system |
| 02/03/2009 | US7484577 Bit leg outer surface hardfacing on earth-boring bit |
| 02/03/2009 | US7484576 Jack element in communication with an electric motor and or generator |
| 02/03/2009 | US7484572 Roller cone drill bit with debris flow paths through associated support arms |
| 02/03/2009 | CA2506426C Apparatus and method for drilling and reaming a borehole |
| 01/29/2009 | WO2009015338A2 Thrust bearings and method for cooling thrust bearings |
| 01/29/2009 | WO2009015003A2 Nozzles including secondary passages, drill assemblies including same and associated methods |
| 01/29/2009 | US20090025985 Cutting element with canted interface surface and bit body incorporating the same |
| 01/29/2009 | US20090025984 Single mold milling process for fabrication of rotary bits to include necessary features utilized for fabrication in said process |
| 01/29/2009 | US20090025981 Method for drilling with casing |
| 01/29/2009 | CA2693720A1 Nozzles including secondary passages, drill assemblies including same and associated methods |
| 01/28/2009 | CN101356340A Earth-boring rotary drill bits and methods of forming earth-boring rotary drill bits |
| 01/28/2009 | CN101356031A Earth-boring rotary drill bits and methods of manufacturing earth-boring rotary drill bits having particle-matrix composite bit bodies |
| 01/28/2009 | CN101353947A Full radial protection PDC bit |
| 01/28/2009 | CN101353946A Diamond core bit capable of reproducing water gap |
| 01/27/2009 | US7481284 Converging diverging nozzle for earth-boring drill bits, method of substantially bifurcating a drilling fluid flowing therethrough, and drill bits so equipped |
| 01/22/2009 | WO2009012432A2 Rotationally indexable cutting elements and drill bits therefor |
| 01/22/2009 | WO2009012196A2 Roller cone bit bearing, and bearing materials |
| 01/22/2009 | WO2008147682A3 Fixed cutter bit and blade for a fixed cutter bit and methods for making the same |
| 01/22/2009 | WO2008014003A3 Polycrystalline superabrasive composite tools and methods of forming the same |
| 01/22/2009 | WO2007148060A8 Pcd cutters with enhanced working surfaces adjacent a cavity |
| 01/22/2009 | US20090020339 Rotationally indexable cutting elements and drill bits therefor |
| 01/22/2009 | US20090020338 Downhole Assembly and Cutter Assembly |
| 01/22/2009 | US20090020334 Nozzles including secondary passages, drill assemblies including same and associated methods |
| 01/22/2009 | CA2693726A1 Rotationally indexable cutting elements and drill bits therefor |
| 01/21/2009 | EP1579104B1 Bit assembly for a hammering drill |
| 01/21/2009 | CN201184133Y Division dental type heat pressing sintered diamond thin wall engineering drill |
| 01/21/2009 | CN201184132Y Polycrystalline diamond composite sheet |
| 01/21/2009 | CN201184131Y Full water well cleaning, drilling, hole redressing and expanding apparatus |
| 01/21/2009 | CN101351615A Methods for optimizing efficiency and durability of rotary drag bits and rotary drag bits designed for optimal efficiency and durability |
| 01/21/2009 | CN101351613A Hardfacing materials with highly conforming properties |
| 01/21/2009 | CN101349144A Drill bit |
| 01/21/2009 | CN100453741C Block-type steel pipe pile |
| 01/15/2009 | WO2009007494A1 Bit assembly |
| 01/15/2009 | WO2008118725A4 Optimized machining process for cutting tubulars downhole |
| 01/15/2009 | US20090014217 Roller Cone Bit Bearing, and Bearing Materials |
| 01/15/2009 | US20090013831 Elongated percussive rock drilling element, a method for production thereof and a use thereof |
| 01/15/2009 | CA2693781A1 Bit assembly |
| 01/14/2009 | EP2013527A2 Connection between a lateral and main pipe and method for making same remotely |
| 01/14/2009 | EP2013439A1 Cutting, drilling or grinding apparatus and method |
| 01/14/2009 | CN201180498Y Light pricker tool |
| 01/14/2009 | CN201180497Y Single tube all-directional drilling injection slip casting drilling bit of auxiliary slip casting hole capable of hydraulic controlling open-and-close |
| 01/14/2009 | CN201180496Y Drilling bit for rotating impulse type anchor bar drill rig |
| 01/14/2009 | CN101343983A Barrel type drilling tool |
| 01/14/2009 | CN101343982A Double-layer barrel type drilling tool |
| 01/13/2009 | US7475744 Superabrasive inserts including an arcuate peripheral surface |
| 01/13/2009 | US7475743 High-strength, high-toughness matrix bit bodies |
| 01/13/2009 | CA2413539C Centraliser |
| 01/08/2009 | WO2009006511A2 Earth boring drill bits made from a low-carbon, high-molybdenum alloy |
| 01/08/2009 | WO2009006510A2 Pdc cutter with oval cross-section |
| 01/08/2009 | WO2008141138A3 Cutting head bearing arrangement for blast hole drilling machine |
| 01/08/2009 | US20090008155 Pdc cutter with oval cross-section |
| 01/08/2009 | US20090008154 Earth Boring Drill Bits Made From A Low-Carbon, High-Molybdenum Alloy |
| 01/07/2009 | EP2011958A1 Auger |
| 01/07/2009 | EP2011893A2 Asymmetric graded composites for improved drill bits |
| 01/07/2009 | EP2010746A1 High density row on roller cone bit |
| 01/07/2009 | EP2010686A2 Polycrystalline abrasive compacts |
| 01/07/2009 | CN100449109C Rotary mine drilling bit for making blast holes |
| 01/06/2009 | US7473287 Thermally-stable polycrystalline diamond materials and compacts |
| 01/06/2009 | US7472764 Rotary drill bit shank, rotary drill bits so equipped, and methods of manufacture |
| 01/01/2009 | US20090003940 System And Method For Mine Roof Counter Bore And Cable Bolt Head Securement Therein |
| 01/01/2009 | US20090000828 Roof Bolt Bit |
| 01/01/2009 | US20090000827 Cutter pocket having reduced stress concentration |
| 01/01/2009 | US20090000208 Composite Material |
| 12/31/2008 | WO2009003088A2 Rounded cutter pocket having reduced stressed concentration |
| 12/31/2008 | EP2007969A1 Methods for designing and fabricating earth-boring rotary drill bits having predictable walk characteristics and drill bits configured to exhibit predicted walk characteristics |
| 12/31/2008 | CN201173120Y Circular arc saw blade |
| 12/31/2008 | CN201173092Y High drilling speed cold compression button bit |
| 12/31/2008 | CN201173091Y Powder spraying stake machine drill head with bidirectional agitation |
| 12/31/2008 | CN201173090Y Slurry spraying stake machine drill head with bidirectional agitation |
| 12/31/2008 | CN201173089Y Inverted spin pick drill head |
| 12/31/2008 | CN101336331A Drill bits with bearing elements for reducing exposure of cutters |
| 12/31/2008 | CN101333910A Roller bit possessing function for preventing cone shedding |
| 12/31/2008 | CA2688549A1 Rounded cutter pocket having reduced stressed concentration |
| 12/30/2008 | US7470341 Method of manufacturing a cutting element from a partially densified substrate |
| 12/30/2008 | US7469757 Drill bit with diamond impregnated cutter element |