| Patents for E21B 10 - Drill bits (19,464) |
|---|
| 05/01/2008 | US20080099249 Tool with a large volume of a superhard material |
| 05/01/2008 | US20080099248 Bore head for microbore operation |
| 05/01/2008 | US20080099244 Seal With Dynamic Sealing Surface At The Outside Diameter |
| 05/01/2008 | US20080099243 Method of Assembling a Drill Bit with a Jack Element |
| 04/30/2008 | CN201053296Y Dust-proof water-injection type screwy reclaiming anchor bar drill pipe drill bit |
| 04/30/2008 | CN101169029A Explosion-proof drill head |
| 04/29/2008 | US7363992 Cutters for downhole cutting devices |
| 04/29/2008 | CA2387046C Cutting tool for breaking hard material, and a cutting cap therefor |
| 04/24/2008 | WO2008048642A1 Bearing insert sleeve for roller cone bit |
| 04/24/2008 | WO2008046297A1 Drill bit with both drilling and reaming function |
| 04/24/2008 | WO2008046148A1 Down-the-hole hammer drill |
| 04/24/2008 | WO2008005718A3 Downhole abrading tools having excessive wear indicator |
| 04/24/2008 | US20080093128 Bearing insert sleeve for roller cone bit |
| 04/24/2008 | US20080093124 Apparatus and methods for drilling a wellbore using casing |
| 04/24/2008 | CA2672175A1 Down-the-hole hammer drill |
| 04/24/2008 | CA2661518A1 Activating device for a downhole tool |
| 04/23/2008 | CN201050307Y Low erosion coring bit |
| 04/23/2008 | CN201050306Y Straight carbide alloy mining bit |
| 04/23/2008 | CN201050305Y Straight high-intensity carbide alloy mining bit |
| 04/23/2008 | CN201050304Y Horizontal well diamond composite slices kickoff bit |
| 04/23/2008 | CN201050303Y Self-dumping cone type spiral anchor drill bit |
| 04/23/2008 | CN101166885A A drilling tool |
| 04/22/2008 | US7360612 Roller cone drill bits with optimized bearing structures |
| 04/22/2008 | US7360608 Rotary drill bits including at least one substantially helically extending feature and methods of operation |
| 04/22/2008 | US7360594 Drilling with casing latch |
| 04/22/2008 | CA2457369C Novel bits and cutting structures |
| 04/22/2008 | CA2455437C Coring bit with uncoupled sleeve |
| 04/17/2008 | WO2007065099B1 Roof drilling system improvements |
| 04/17/2008 | US20080087473 Percussive Drill Bit |
| 04/17/2008 | US20080087471 Roller cone drill bits with optimized bearing structures |
| 04/16/2008 | CN201047256Y Membrane barrier double tube single moving core drill tools |
| 04/16/2008 | CN201047251Y Novel device for drilling mousehole |
| 04/16/2008 | CN101163849A Bit leg and cone hardfacing for earth-boring bit |
| 04/15/2008 | US7357200 Earth auger |
| 04/15/2008 | US7356947 Method for making a trench wall in the ground, trench wall cutter, and trench wall cutting device |
| 04/15/2008 | CA2532911C Drill bit |
| 04/15/2008 | CA2492678C Rotary cutting bit with material-deflecting ledge |
| 04/15/2008 | CA2482532C Bearing and lubrication system for earth boring bit |
| 04/10/2008 | WO2008042328A1 Earth-boring rotary drill bits including bit bodies having boron carbide particles in aluminum or aluminum-based alloy matrix materials, and methods for forming such bits |
| 04/10/2008 | WO2008040837A1 Arrangement for foundation |
| 04/10/2008 | US20080085407 Superabrasive elements, methods of manufacturing, and drill bits including same |
| 04/10/2008 | US20080083568 Methods for applying wear-resistant material to exterior surfaces of earth-boring tools and resulting structures |
| 04/09/2008 | EP1907664A1 System and method for dynamic sealing around a drill stem |
| 04/09/2008 | EP1415064B1 Drilling apparatus |
| 04/09/2008 | EP1297242B1 Drill bits |
| 04/09/2008 | CN101160445A Drilling tool equipped with improved cutting element layout to reduce cutter damage through formation changes, methods of design thereof and drilling therewith |
| 04/08/2008 | US7356450 Methods for designing roller cone bits by tensile and compressive stresses |
| 04/08/2008 | US7353893 Tool with a large volume of a superhard material |
| 04/08/2008 | US7353892 Guide frame for an earth drilling apparatus |
| 04/08/2008 | US7353889 Rotary driven pipe-bursting tool |
| 04/08/2008 | CA2518283C Pressure activated release member for an expandable drillbit |
| 04/08/2008 | CA2443140C Internal pressure indicator and locking mechanism for a downhole tool |
| 04/08/2008 | CA2413377C Drill bits |
| 04/03/2008 | WO2008037527A1 Rock drill |
| 04/03/2008 | WO2007136568B1 Core drill assembly with adjustable total flow area and restricted flow between outer and inner barrel assemblies |
| 04/03/2008 | DE102006045918A1 Gesteinsbohrer Rock drill |
| 04/02/2008 | EP1905945A1 Auger for drilling an earth borehole |
| 04/02/2008 | EP1904713A1 System5 method, and apparatus for reducing residual stress in as-welded roller cone bit ball plug welds |
| 04/02/2008 | CN201043442Y Polycrystalline diamond clad sheet drill bit |
| 04/02/2008 | CN101153363A Method of producing polycrystal diamond complex sheet drill blank bits |
| 04/01/2008 | USRE40197 Drill bit having an improved seal and lubrication method using same |
| 04/01/2008 | US7350601 Cutting elements formed from ultra hard materials having an enhanced construction |
| 04/01/2008 | US7350600 Shirttails for reducing damaging effects of cuttings |
| 04/01/2008 | US7350599 Impregnated diamond cutting structures |
| 04/01/2008 | US7350596 Methods and apparatus for expanding the diameter of a borehole |
| 04/01/2008 | CA2447223C Drill bit |
| 03/27/2008 | WO2008036709A2 Apparatus and method for packaging rotary drill bits |
| 03/27/2008 | WO2008036348A1 Protector for rock bit seals |
| 03/27/2008 | WO2008014343A3 Helical chisel insert for rock bits |
| 03/27/2008 | WO2007058751A3 Recoil auger with clutch bearing |
| 03/27/2008 | US20080073127 Atomic layer deposition nanocoatings on cutting tool powder materials |
| 03/27/2008 | US20080073126 Polycrystalline diamond composites |
| 03/27/2008 | US20080073125 Abrasive wear resistant hardfacing materials, drill bits and drilling tools including abrasive wear resistant hardfacing materials, and methods for applying abrasive wear resistant hardfacing materials to drill bits and drilling tools |
| 03/27/2008 | US20080073124 Protector for rock bit seals |
| 03/26/2008 | CN201041003Y Limiting aperture-extending drill bit |
| 03/25/2008 | US7347292 Braze material for an attack tool |
| 03/25/2008 | US7347291 Bit assembly |
| 03/25/2008 | US7347290 Multi-part energizer for mechanical seal assembly |
| 03/25/2008 | CA2477673C Shaped inserts with increased retention force |
| 03/25/2008 | CA2237753C Improved cutter head mounting for drill bit |
| 03/21/2008 | CA2603693A1 Polycrystalline diamond composites |
| 03/21/2008 | CA2603458A1 Atomic layer deposition nanocoatings on cutting tool powder materials |
| 03/20/2008 | WO2006104885A8 Rotary drill bit shank, rotary drill bits so equipped, and methods of manufacture |
| 03/20/2008 | US20080071509 Method of designing a drill bit, and bits made using said method |
| 03/20/2008 | US20080066969 Bit For Drilling A Hole |
| 03/20/2008 | US20080066966 Sprinkler repair auger |
| 03/20/2008 | US20080066903 Method and system for accessing subterranean deposits from the surface and tools therefor |
| 03/20/2008 | US20080066581 Methods of fabricating rotary drill bits |
| 03/20/2008 | DE202007016609U1 Motorgetriebener rückentragbarer Erdlochbohrer zum Bohren von Löchern verschiedener Durchmesser Motor-driven move portable hole in the ground drill for drilling holes of different diameters |
| 03/19/2008 | CN201037380Y Three-piece wedge-shape hard alloy drill bit for mine |
| 03/19/2008 | CN201037379Y Blocking-proof drill bit |
| 03/19/2008 | CN201037378Y Directional bending nozzle |
| 03/19/2008 | CN201036820Y Drill head capable of not being broken |
| 03/19/2008 | CN101144370A Hot pressing high phosphorus iron base diamond drilling bit and preparation method thereof |
| 03/19/2008 | CN101144278A Integrated multifunctional hole-drilling pile-filling machine |
| 03/18/2008 | US7343990 Rotary rock bit with hardfacing to reduce cone erosion |
| 03/18/2008 | US7343989 Secondary retainer for a downhole hammer bit |
| 03/18/2008 | CA2486611C Drill bit |
| 03/13/2008 | WO2008030205A1 Drill bit provided with a sealed bearing support |
| 03/13/2008 | WO2007144719A3 Expandable downhole tool |