| Patents for E21B 10 - Drill bits (19,464) |
|---|
| 08/15/2007 | CN101016826A Bit body of diamond bit and manufacture method therefor |
| 08/14/2007 | US7255182 Ground drilling tool |
| 08/14/2007 | CA2534754C Reaming tool |
| 08/14/2007 | CA2447552C Blunt faced cutter element and enhanced drill bit and cutting structure |
| 08/14/2007 | CA2224372C A cutter, a stopper means and a method of preventing mud from entering into a cutter |
| 08/09/2007 | US20070181348 Polycrystalline diamond abrasive elements |
| 08/09/2007 | US20070181347 Self relieving seal |
| 08/09/2007 | US20070181345 Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells |
| 08/09/2007 | US20070181342 Hole coring system |
| 08/09/2007 | US20070181340 Drilling apparatus with percussive action cutter |
| 08/09/2007 | CA2577572A1 Thermally stable ultra-hard polycrystalline materials and compacts |
| 08/08/2007 | EP1815103A1 Rock drill bit |
| 08/08/2007 | EP1815102A1 One trip milling system |
| 08/08/2007 | CN2932362Y Impregnated diamond decoring drill roughcast structure |
| 08/08/2007 | CN2931757Y Double dual-flow channel drill bit for exploratory boring bergol |
| 08/08/2007 | CN2931756Y Expansion bit |
| 08/08/2007 | CN2931490Y Blast furnace iron opening drill bit |
| 08/08/2007 | CN101012736A Slim-hole hydraulic controlled reducing reaming bit |
| 08/08/2007 | CN101012649A Bidirectional helix extruding-enlarging pile construction method and bidirectional helix closed extruding-enlarging aiguille |
| 08/07/2007 | US7252164 Cutting structure based hydraulics |
| 08/07/2007 | US7252163 Downhole under-reamer tool |
| 08/07/2007 | US7252155 Percussive power tool with flushing head |
| 08/02/2007 | US20070175672 Cutting elements and bits incorporating the same |
| 08/02/2007 | US20070175671 Rock drill tool, rock drill bit and production method |
| 08/02/2007 | US20070175670 Hydraulic breaking hammer |
| 08/02/2007 | US20070175669 High-strength, high-toughness matrix bit bodies |
| 08/02/2007 | US20070175668 Process and system for drilling and lining a bore hole |
| 08/02/2007 | US20070175664 Rock drill bit assembly |
| 08/02/2007 | CA2535141A1 Rock drill water separator |
| 08/01/2007 | CN2929144Y Novel drill rod |
| 08/01/2007 | CN1329617C Rotational cutting aiguille subassembly of the drill, flexible sleeve airproof parts and steel drill pipe subassembly |
| 08/01/2007 | CN101010482A Excavating tool and steel pipe forepoling method |
| 07/31/2007 | US7250069 Drill bit of a matrix of sintered spherical tungsten carbide and an infiltration binder of a metal or alloys; and a cutting element on the bit body; wear resistance |
| 07/31/2007 | CA2482122C Expandable eccentric reamer and method of use in drilling |
| 07/31/2007 | CA2254741C Dual-seal drill bit pressure communication system |
| 07/30/2007 | CA2560645A1 Cutting elements and bits incorporating the same |
| 07/26/2007 | WO2007084623A2 Hole coring system |
| 07/26/2007 | WO2007070648A3 Drill bits with bearing elements for reducing exposure of cutters |
| 07/26/2007 | US20070169965 Drilling tool with a cutting element that is configured as a plate or head |
| 07/25/2007 | EP1811126A1 Conical downhole reamer |
| 07/25/2007 | EP1811125A1 Borehole reamer |
| 07/25/2007 | EP1811124A1 Hole opener |
| 07/25/2007 | EP1687126B1 Drilling and/or chiselling tool |
| 07/25/2007 | CN2926480Y Diamond drilling-bit mud nozzle |
| 07/25/2007 | CN2926479Y Hard-alloy bore bit for preventing brazing wafer from producing heat internal stress |
| 07/25/2007 | CN2926477Y Multi-axis hole driller |
| 07/25/2007 | CN2926473Y Pit driller |
| 07/25/2007 | CN1328472C Boring head and a roller cutter and a saddle for a boring head for rotary drilling |
| 07/25/2007 | CN101006247A A rock drill bit and a thread joint |
| 07/25/2007 | CN101005919A Indexable cutting inserts and methods for producing the same |
| 07/19/2007 | WO2007081780A1 Seal insert ring for roller cone bits |
| 07/19/2007 | WO2006104885A3 Rotary drill bit shank, rotary drill bits so equipped, and methods of manufacture |
| 07/19/2007 | US20070163812 Bit leg outer surface hardfacing on earth-boring bit |
| 07/19/2007 | US20070163811 Rotary drill bit with nozzles designed to enhance hydraulic performance and drilling fluid efficiency |
| 07/19/2007 | US20070163809 Drilling and hole enlargement device |
| 07/19/2007 | US20070163808 Drilling and hole enlargement device |
| 07/18/2007 | EP1454029B1 Fluid drilling head |
| 07/18/2007 | CN2923975Y Tricone bit for mine |
| 07/18/2007 | CN2923974Y Tricone bit |
| 07/18/2007 | CN2923969Y Ladder-shape screw-pitch propelling extrusion, perforation, broaching pile engine |
| 07/18/2007 | CN1327103C Fluid drilling head |
| 07/18/2007 | CA2723505A1 Drilling and hole enlargement device |
| 07/18/2007 | CA2723064A1 Drilling and hole enlargement device |
| 07/17/2007 | US7243745 Cutting elements and rotary drill bits including same |
| 07/17/2007 | US7243744 Randomly-oriented composite constructions |
| 07/17/2007 | US7243737 Interchangeable reamer |
| 07/12/2007 | WO2007078437A2 Keyed connection for drill bit |
| 07/12/2007 | WO2007077547A1 A drill bit assembly for fluid-operated percussion drill tools |
| 07/12/2007 | US20070158115 Methods of manufacturing and repairing rotary drill bits including support elements affixed to the bit body at least partially defining cutter pocket recesses |
| 07/12/2007 | US20070158114 Seal insert ring for roller cone bits |
| 07/12/2007 | US20070158113 Down-the-hole hammer and components for a down-the-hole hammer, and a method of assembling a down-the-hole hammer |
| 07/12/2007 | US20070158111 Method and apparatus for directional drilling |
| 07/12/2007 | US20070157917 High pressure superabrasive particle synthesis |
| 07/11/2007 | EP1805389A1 Polycrystalline cutter with multiple cutting edges |
| 07/11/2007 | CN2921254Y Hard alloy sheet for drill bit |
| 07/11/2007 | CN2921253Y Tri-cone rotary drill bit cutting structure with build-up welding pinion |
| 07/11/2007 | CN1995689A Pile forming mechanism with gyro bit and the gyro bit and pile forming method |
| 07/11/2007 | CN1995688A Oscillatory auger hole and dredging device |
| 07/11/2007 | CN1995687A Disciform PDC drill-following reaming bit |
| 07/11/2007 | CN1995685A Pile forming mechanism with high-pressure-jet gyro bit and pile forming method |
| 07/11/2007 | CA2573575A1 Drill bit with cutter pockets formed by plunge edm |
| 07/10/2007 | US7240746 Bit gage hardfacing |
| 07/10/2007 | US7240745 Drill bit lubrication apparatus and method |
| 07/10/2007 | CA2486696C Wedge activated underreamer |
| 07/10/2007 | CA2250416C Extended drill bit nozzle having extended retainer |
| 07/05/2007 | WO2006036525A8 Rotary drill bit having cutting insert with a notch |
| 07/05/2007 | US20070151770 Drill bits with bearing elements for reducing exposure of cutters |
| 07/05/2007 | US20070151769 Microwave sintering |
| 07/05/2007 | US20070151768 Stabilising band for a roller assembly |
| 07/05/2007 | DE19734068B4 Bohrspitze Drill |
| 07/04/2007 | CN2918707Y Prospecting core-dropping bore bit |
| 07/04/2007 | CN2918706Y Slim-hole drill-follow reamer |
| 07/03/2007 | US7237628 Fixed cutter drill bit with non-cutting erosion resistant inserts |
| 07/03/2007 | US7237627 Bearing and lubrication system for earth boring bit |
| 07/03/2007 | CA2468729C Reverse section milling method and apparatus |
| 07/03/2007 | CA2426522C One cone bit with interchangeable cutting structures, a box-end connection, and integral sensory devices |
| 07/03/2007 | CA2380520C Rotational impact drill assembly |
| 06/28/2007 | WO2007073032A1 Mechanized construction method for earth wire under-bracing and extendable excavating unit for auger crane |
| 06/28/2007 | WO2007054154A3 Tool for drilling in earthy and/or rocky ground |
| 06/28/2007 | US20070144790 Polycrystalline ultra-hard material with microstructure substantially free of catalyst material eruptions |