| Patents for E21B 10 - Drill bits (19,464) |
|---|
| 01/31/2002 | US20020011357 Fluid drilling system with drill string and retro jets |
| 01/31/2002 | US20020011356 Drilling equipment and method |
| 01/31/2002 | US20020011355 Method and apparatus for directional boring under mixed conditions |
| 01/31/2002 | DE10034742A1 Werkzeug mit zugeordnetem Schlagwerkzeug Tool with an associated impact tool |
| 01/30/2002 | EP1175546A1 Abrasive jet drilling assembly |
| 01/30/2002 | EP0996807B1 Rotatable cutting bit assembly with wedge-lock retention assembly |
| 01/30/2002 | CN1333112A Cutter with impact tool |
| 01/29/2002 | US6342301 Diamond sintered compact and a process for the production of the same |
| 01/29/2002 | US6341656 Core barrel |
| 01/24/2002 | WO2001065049A3 Cavitating jet |
| 01/24/2002 | US20020007972 Drill bit inserts with interruption in gradient of properties |
| 01/23/2002 | EP1174584A2 Asymmetric diamond impregnated drill bit |
| 01/23/2002 | EP1174225A1 Percussion tool |
| 01/23/2002 | EP0789637B1 Stamping- and cutting device including a soldering jig for core drill pipes and procedure by use of such device |
| 01/23/2002 | EP0720682A4 Disc cutter |
| 01/22/2002 | US6340064 Bi-center bit adapted to drill casing shoe |
| 01/16/2002 | EP0815345B1 Milling tool, whipstock, milling system and method of forming a window in the wall of a tubular |
| 01/16/2002 | CN1331377A Roller bit with parallelly inlaid teeth |
| 01/15/2002 | US6338390 Method and apparatus for drilling a subterranean formation employing drill bit oscillation |
| 01/10/2002 | WO2002002902A2 Improved rolling cutter lubrication arrangement |
| 01/10/2002 | CA2419610A1 Improved rolling cutter lubrication arrangement |
| 01/09/2002 | EP1170460A2 Rotatable cutting bit with cutting inserts |
| 01/09/2002 | EP1169519A1 Bearing capacity enhancement for piling applications |
| 01/09/2002 | CN2470526Y Teeth of gear-wheel driller |
| 01/09/2002 | CN1330744A Rotary drilling bit |
| 01/08/2002 | US6336512 Drill bit having canted seal |
| 01/03/2002 | WO2002001037A1 Drill bits |
| 01/03/2002 | US20020000336 Method for the manufacturing of a cone cutter for rotary drilling by crushing, a rotary cone drill bit, a cone cutter and crushing elements therefor |
| 01/03/2002 | US20020000335 Roller bit with parallel inlayed compacts |
| 01/02/2002 | EP1165929A1 Method and apparatus for directional boring |
| 01/02/2002 | CN2469167Y Densed drilling bits for making densed piles for consolidation of railway foundation |
| 01/01/2002 | CA2162792C Cavern well completion method and apparatus |
| 12/27/2001 | WO2001098621A2 Centraliser |
| 12/27/2001 | US20010054514 Method and apparatus for monitoring and recording of the operating condition of a downhole drill bit during drilling operations |
| 12/25/2001 | US6332503 Fixed cutter bit with chisel or vertical cutting elements |
| 12/20/2001 | WO2001038683A3 A method for the manufacturing of a drill bit for percussive rock drilling and a rock drill bit and buttons therefor |
| 12/20/2001 | WO1999006667A3 Claw tooth rotary bit |
| 12/19/2001 | EP1163420A2 Rotary-type earth drilling bit, modular gauge pads therefor and methods of testing or altering such drill bits |
| 12/19/2001 | CN1076250C Knife head for material removing tool |
| 12/18/2001 | US6330924 Superhard drill bit heel, gage, and cutting elements with reinforced periphery |
| 12/18/2001 | US6330923 Sealing bearings in drill bits |
| 12/13/2001 | WO2001094746A1 Wellbore liner system |
| 12/13/2001 | WO2001094738A1 A method for drilling with casing |
| 12/13/2001 | US20010050187 Protected lubricant reservoir for sealed earth boring drill bit |
| 12/13/2001 | CA2661956A1 A method for drilling with casing |
| 12/13/2001 | CA2411856A1 A method for drilling with casing |
| 12/12/2001 | EP1162343A2 Rock drilling tool |
| 12/12/2001 | EP1161323A1 Method for forming a superabrasive polycrystalline cutting tool with an integral chipbreaker feature |
| 12/12/2001 | EP0784735B1 A rock drill bit and cutting inserts |
| 12/12/2001 | CN2464924Y Multi-stage combined dimond composite piece drill |
| 12/12/2001 | CN2464923Y Bearing seal device |
| 12/11/2001 | US6328506 Masonry drill bit |
| 12/11/2001 | US6328117 Drill bit having a fluid course with chip breaker |
| 12/09/2001 | CA2311158A1 A method for drilling with casing |
| 12/08/2001 | CA2530654A1 Cutting structure for roller cone drill bits |
| 12/06/2001 | WO2001092678A1 Apparatus for directional drilling |
| 12/06/2001 | WO2001092677A1 Improved core sampling drill bit |
| 12/06/2001 | WO2001066899A3 Rock drill |
| 12/06/2001 | US20010049019 Lowing drying cost and increasing productivity of coating animal feeds with flowable substance |
| 12/06/2001 | US20010047891 Drill bit having diamond impregnated inserts primary cutting structure |
| 12/06/2001 | US20010047890 Drill bit with large inserts |
| 12/06/2001 | US20010047888 Drill bit (a) |
| 12/06/2001 | US20010047886 Drill bit stabilizer device |
| 12/05/2001 | EP1159510A2 Wellbore primary barrier and related systems |
| 12/05/2001 | EP1159505A1 Roller cone bit with improved seal gland design |
| 12/04/2001 | US6325165 Cutting element with improved polycrystalline material toughness |
| 12/04/2001 | US6325162 Bit connector |
| 11/29/2001 | US20010045306 Bi-center bit adapted to drill casing shoe |
| 11/29/2001 | US20010045305 Two stage drill bit |
| 11/29/2001 | US20010045304 Drilling apparatus |
| 11/29/2001 | US20010045067 Concrete pile made of such a concrete and method for drilling a hole adapted for receiving the improved concrete pile in a weak ground |
| 11/29/2001 | DE10024433A1 Gesteinsbohrer Rock drill |
| 11/28/2001 | CN2462066Y Single gear wheel-fixed cutter composite drill bit |
| 11/28/2001 | CN2462065Y Composite tooth form single tri-cone rotary drill bit |
| 11/28/2001 | CN1075431C Rotary-impacting-type spiral drill bit |
| 11/28/2001 | CN1075405C Method for making rotary drill tool |
| 11/27/2001 | US6321862 Rotary drill bits for directional drilling employing tandem gage pad arrangement with cutting elements and up-drill capability |
| 11/27/2001 | US6321861 Auger |
| 11/27/2001 | US6321858 Bit for directional drilling |
| 11/22/2001 | WO2001088322A1 Cutting tool and method of using same |
| 11/22/2001 | WO2001088321A1 Rock drill |
| 11/22/2001 | US20010042644 Bit apparatus |
| 11/21/2001 | EP1155220A1 Advancing device for boring sections of roadway, tunnels or similar |
| 11/21/2001 | EP1155217A2 A method for setting a packer in a well bore, and a packer |
| 11/21/2001 | EP1155215A2 Mills for wellbore operations |
| 11/21/2001 | EP1021639B1 A cutting bit assembly for impinging an earth strata |
| 11/21/2001 | CN2460719Y Side hydrophthalmos single tri-cone rotary drill bit |
| 11/21/2001 | CN1323253A Diamond blade having rim type cutting tip for use in grinding or cutting apparatus |
| 11/21/2001 | CN1323252A Diamond blade having segment type cutting tip for use in cutting, grinding or drilling apparatus |
| 11/20/2001 | USRE37450 Directional multi-blade boring head |
| 11/20/2001 | CA2219642C Method and apparatus for removal of utility line and replacement with polyolefin pipe |
| 11/15/2001 | WO2001086109A1 Drill bit mounting for a downhole drilling machine |
| 11/15/2001 | WO2001085373A1 Perforating drill |
| 11/15/2001 | US20010040055 Rock drill bit and a check valve therefor |
| 11/15/2001 | US20010040053 Multi-aggressiveness cutting face on PDC cutters and method of drilling subterranean formations |
| 11/15/2001 | DE10023200A1 Ice cover piercing tool has hollow screw with which ice cover is pierced |
| 11/14/2001 | EP1154286A1 Method and apparatus for detecting buried metallic objects |
| 11/14/2001 | EP1153193A2 Directional drilling apparatus |
| 11/14/2001 | EP0870151B1 Apparatus for removal of utility line and replacement with polyolefin pipe |
| 11/14/2001 | CN2459434Y Separated piston type double outer diameter hydraulic drill stabilizer |