| Patents for E21B 10 - Drill bits (19,464) |
|---|
| 09/06/2001 | US20010018990 Rock drill bit having retrac teeth and method for its manufacturing |
| 09/06/2001 | DE10009732A1 Rock drill has drill head, spiral conveyor with main and subsidiary webs, conveyor edges, main and subsidiary cutter-blades. |
| 09/04/2001 | US6283844 Tool component |
| 09/04/2001 | US6283234 Apparatus for mounting PCD compacts |
| 09/04/2001 | US6283233 Drilling and/or coring tool |
| 09/04/2001 | US6283232 Rock drill |
| 09/04/2001 | US6283231 Soil displacing screw auger and method for making a concrete pile with this auger |
| 08/30/2001 | WO2001063085A1 Device for drilling, especially percussion or rotary percussion drilling, holes |
| 08/30/2001 | US20010017224 Method of applying a wear-resistant layer to a surface of a downhole component |
| 08/30/2001 | US20010017222 Directional drilling components and adaptors |
| 08/29/2001 | EP1127477A1 Method and device in down-the-hole drilling |
| 08/29/2001 | EP1127214A1 Rotatable cutting bit and bit washer therefor |
| 08/28/2001 | US6279671 Roller cone bit with improved seal gland design |
| 08/23/2001 | WO2001061142A1 Drill bit, hard member, and bit body |
| 08/23/2001 | US20010015290 Hardfacing rock bit cones for erosion protection |
| 08/23/2001 | DE10106942A1 Pneumatisches Bodenstechwerkzeug mit beweglichem Meißelkopf Pneumatic floor grooving tool with movable cutter head |
| 08/22/2001 | CN1309227A Axially symmetric cutting element |
| 08/21/2001 | US6276467 Percussive rock drill bit with asymmetric wing |
| 08/21/2001 | US6276465 Method and apparatus for determining potential for drill bit performance |
| 08/16/2001 | WO2001059248A1 Method for inserting pipes into a bore hole and insertion drill head for carrying out said method |
| 08/16/2001 | US20010013428 Drilling system |
| 08/15/2001 | CN2443142Y Fixed diameter hole expanding device for drilling well |
| 08/14/2001 | US6273201 Pneumatic ground piercing tool with movable chisel head |
| 08/14/2001 | US6272753 Multi-layer, multi-grade multiple cutting surface PDC cutter |
| 08/07/2001 | US6270165 Cutting tool for breaking hard material, and a cutting cap therefor |
| 08/07/2001 | US6270164 Cutting tooth for earthworking |
| 08/07/2001 | US6270163 Mining machine with moveable cutting assembly and method of using the same |
| 08/07/2001 | US6269894 Cutting elements for rotary drill bits |
| 08/07/2001 | US6269893 Bi-centered drill bit having improved drilling stability mud hydraulics and resistance to cutter damage |
| 08/07/2001 | US6269891 Through-drill string conveyed logging system |
| 08/01/2001 | EP1120541A1 Axisymmetric cutting element |
| 07/28/2001 | CA2331693A1 Drill bit for directional drilling |
| 07/25/2001 | EP1117896A1 Hole opener with multisized, replaceable arms and cutters |
| 07/25/2001 | EP1117895A1 Roller bit with collimated jets sweeping separate bottom-hole tracks |
| 07/25/2001 | EP1117894A2 Roller-cone bits, systems, drilling methods, and design methods with optimization of tooth orientation |
| 07/25/2001 | EP1117515A1 Diamond blade having segment type cutting tip for use in cutting, grinding or drilling apparatus |
| 07/25/2001 | EP1117514A1 Diamond blade having rim type cutting tip for use in grinding or cutting apparatus |
| 07/24/2001 | US6264402 Method and apparatus for forming piles in place |
| 07/24/2001 | US6264367 Dual-seal drill bit with fluid cleaning capability |
| 07/24/2001 | US6263985 Drilling machine with changeable drive unit |
| 07/24/2001 | US6263983 Apparatus for directional drilling |
| 07/24/2001 | CA2221069C Method for horizontal directional drilling of rock formations |
| 07/24/2001 | CA2221068C Drill bit for horizontal directional drilling of rock formations |
| 07/19/2001 | US20010008190 Multiple grade carbide for diamond capped insert |
| 07/18/2001 | EP1116858A1 Insert |
| 07/18/2001 | EP1115961A1 Through-drill string conveyed logging system |
| 07/18/2001 | CN2439535Y Drilling and pile making machine |
| 07/17/2001 | US6260640 Axisymmetric cutting element |
| 07/17/2001 | US6260639 Drill bit inserts with zone of compressive residual stress |
| 07/17/2001 | US6260638 Rotatable cutting bit assembly with wedge-lock retention assembly |
| 07/17/2001 | US6260637 Rock drill |
| 07/17/2001 | US6260636 Rotary-type earth boring drill bit, modular bearing pads therefor and methods |
| 07/17/2001 | US6260635 Rotary cone drill bit with enhanced journal bushing |
| 07/17/2001 | US6260634 Sonde housing for directional drilling |
| 07/12/2001 | US20010007290 Rotary cone drill bit with machined cutting structure and method |
| 07/12/2001 | DE10000013A1 Saugbohrer Piston sampler |
| 07/11/2001 | CN2438829Y Sliding bearing for tri-cone rotary drill bit |
| 07/10/2001 | US6258139 Polycrystalline diamond cutter with an integral alternative material core |
| 07/05/2001 | US20010006124 Roller cone drill bit with improved pressure compensation |
| 07/05/2001 | US20010006122 Suction tool |
| 07/04/2001 | EP1112809A2 Drill with suction means |
| 07/04/2001 | EP1112433A2 Force-balanced roller-cone bits, systems, drilling methods, and design methods |
| 07/04/2001 | CN2437839Y Bit adapted for pile foundation construction drill |
| 07/03/2001 | US6254275 Sealed bearing drill bit with dual-seal configuration and fluid-cleaning capability |
| 07/03/2001 | US6253864 Percussive shearing drill bit |
| 07/03/2001 | US6253863 Side cutting gage pad improving stabilization and borehole integrity |
| 07/03/2001 | US6253862 Earth-boring bit with cutter spear point hardfacing |
| 06/28/2001 | WO2001046550A1 Drilling bit for drilling while running casing |
| 06/28/2001 | US20010004946 Enhanced non-planar drill insert |
| 06/28/2001 | US20010004945 Sharp gage for mill tooth rock bits |
| 06/27/2001 | CN1067617C 钻削刀具 Drilling tools |
| 06/26/2001 | US6250408 Earth-boring drill bits with enhanced formation cuttings removal features |
| 06/26/2001 | US6250407 Rotary drill bit having filling opening for the installation of cylindrical bearings |
| 06/26/2001 | US6250404 Directional boring head |
| 06/26/2001 | US6250403 Device and method for enlarging a Bore |
| 06/21/2001 | US20010004026 Drill bit with canted gage insert |
| 06/21/2001 | US20010003932 Multi-layer, multi-grade multiple cutting surface pdc cutter |
| 06/20/2001 | CN1299916A Manufacture of diamond bit die |
| 06/19/2001 | US6248447 Cutter including insert of polycrystalline diamond containing alkaline earth carbonate as sintering binder-catalyst, said insert being at least partly surrounded by support body of polycrystalline diamond containing iron group element or alloy |
| 06/19/2001 | US6247545 Single energizer face seal for rocks bits with floating journal bearings |
| 06/19/2001 | US6247544 Duckbill with cutting teeth |
| 06/17/2001 | CA2327560A1 Drill bit inserts with variations in thickness of diamond coating |
| 06/14/2001 | WO2001042617A1 Reamer shoe |
| 06/14/2001 | US20010003318 Drill bit |
| 06/13/2001 | DE10060901A1 Bohrkrone Drill bit |
| 06/13/2001 | CN2434421Y Casing of bit head |
| 06/12/2001 | US6246974 Method of determining characteristics of a rotary drag-type drill bit |
| 06/12/2001 | US6244665 Cutting toolholder with recessed groove for cutting tool removal |
| 06/12/2001 | US6244365 Unplanar non-axisymmetric inserts |
| 06/12/2001 | US6244364 Earth-boring bit having cobalt/tungsten carbide inserts |
| 06/12/2001 | US6244363 Retrieval head for a drill bit composed of a plurality of bit segments |
| 06/07/2001 | US20010002557 Composition for binder material particularly for drill bit bodies |
| 06/07/2001 | DE19955345A1 Bohrkopf mit Energieerzeugungsvorrichtung Drilling head with energy generating device |
| 06/06/2001 | EP0888490B1 Mill for wellbore milling operations |
| 06/06/2001 | CN1298057A Bearing sealing structure for rotary drill bit |
| 06/06/2001 | CN1066797C Tubular actuator component for use in a drill column |
| 06/05/2001 | US6241036 Reinforced abrasive-impregnated cutting elements, drill bits including same |
| 06/05/2001 | US6241035 Superhard material enhanced inserts for earth-boring bits |
| 06/05/2001 | US6241034 Cutter element with expanded crest geometry |
| 05/31/2001 | WO2001038684A1 Rotary drill bit insert |