| Patents for E21B 10 - Drill bits (19,464) |
|---|
| 10/07/2004 | US20040195006 Under-reamer tool |
| 10/07/2004 | US20040194689 High pressure superabrasive particle synthesis |
| 10/06/2004 | CN2646214Y Pile extruder |
| 10/05/2004 | US6799648 Method of producing downhole drill bits with integral carbide studs |
| 10/05/2004 | CA2237321C A sleeve for orientating a tool |
| 10/05/2004 | CA2167947C Downhole milling tool |
| 09/30/2004 | US20040188149 Drill out bi-center bit and method for using same |
| 09/30/2004 | US20040188148 Roller-cone bits, systems, drilling methods, and design methods with optimization of tooth orientation |
| 09/30/2004 | US20040188141 Back reaming tool |
| 09/30/2004 | US20040187290 Machining to form holes, brazing drilling inserts in each hole, applying protective hardfacing material to the drill bit structure using an arc hardfacing process; high velocity oxygen fuel (HVOF) processes; control heating at selecting positions to form protective coatings |
| 09/28/2004 | US6797326 Method of making polycrystalline diamond with working surfaces depleted of catalyzing material |
| 09/28/2004 | CA2181754C Masonry drill bit |
| 09/23/2004 | WO2004081336A1 Tool insert |
| 09/23/2004 | US20040186700 Force-balanced roller-cone bits, systems, drilling methods, and design methods |
| 09/23/2004 | US20040182610 Drill crown |
| 09/23/2004 | US20040182609 Force-balanced roller-cone bits, systems, drilling methods, and design methods |
| 09/23/2004 | US20040182608 Force-balanced roller-cone bits, systems, drilling methods, and design methods |
| 09/23/2004 | US20040182607 Method of forming concrete pilings using a reverse circulation drilling system |
| 09/23/2004 | DE10312035A1 Verfahren zum Einbringen eines Bohrloches A method for introducing a wellbore |
| 09/23/2004 | CA2518946A1 Tool insert |
| 09/22/2004 | EP1163420B1 Rotary-type earth drilling bit, modular gauge pads therefor and methods of testing or altering such drill bits |
| 09/22/2004 | CN1531622A Soil excavating tool, swivel, connecting device and ground improving method |
| 09/21/2004 | CA2426336C Method for forming a window in a tubular and apparatus for use in said method |
| 09/16/2004 | WO2004079151A2 Drilling with casing latch |
| 09/16/2004 | WO2004079150A2 Full bore lined wellbores |
| 09/16/2004 | DE10308538A1 Verfahren zum Herstellen einer Schlitzwand im Boden, Schlitzwandfräse und Schlitzwandfräsvorrichtung A method for making a trench wall in the ground, a trench wall cutter and trench wall |
| 09/16/2004 | CA2683763A1 Full bore lined wellbores |
| 09/15/2004 | CN2641265Y Broaching bit |
| 09/14/2004 | US6789635 Drill bit for directional drilling in cobble formations |
| 09/14/2004 | US6789634 Self-lubricating elastomeric seal with polarized graphite |
| 09/10/2004 | WO2004076804A1 Drill shoe |
| 09/10/2004 | WO2004076800A1 Secondary cutting element for drill bit |
| 09/10/2004 | WO2004028746A3 Brazed diamond tools and methods for making the same |
| 09/10/2004 | CA2517066A1 Secondary cutting element for drill bit |
| 09/09/2004 | US20040173384 Drill bit and cutter having insert clusters and method of manufacture |
| 09/09/2004 | US20040173383 Apparatus and method for rotary bored drilling |
| 09/09/2004 | US20040173380 Hollow auger head assembly |
| 09/08/2004 | EP1454031A1 An improved transmission sleeve |
| 09/08/2004 | EP1454030A1 A boring head and a roller cutter and a saddle for a boring head for rotary drilling |
| 09/08/2004 | EP1454029A1 Fluid drilling head |
| 09/08/2004 | EP1453627A2 Consolidated hard materials, methods of manufacture, and applications |
| 09/08/2004 | EP1155215B1 Mills for wellbore operations |
| 09/08/2004 | EP1027520A4 Pre-orienting nozzle |
| 09/08/2004 | CN1526911A Drilling and reaming machine |
| 09/07/2004 | US6786557 Protective wear sleeve having tapered lock and retainer |
| 09/07/2004 | US6786288 Cutting structure for roller cone drill bits |
| 09/02/2004 | WO2004074635A1 A drill bit, a drill rod and a self drilling roof bolt |
| 09/02/2004 | WO2004074534A2 Diamond tape coating and methods of making and using same |
| 09/02/2004 | US20040168833 Cutter for tunnel boring machine |
| 09/01/2004 | EP1452645A1 Method for building a diaphragm wall in the ground and trench wall cutting apparatus |
| 09/01/2004 | EP1002181A4 Drill bit directional nozzle |
| 09/01/2004 | CN2637702Y Pressure difference type drilling micro underreamer |
| 09/01/2004 | CN1525016A Method for building a diaphragm wall in the ground,trench wall cutter and trench wall cutting apparatus |
| 09/01/2004 | CN1164858C Hydraulic structure of single gear wheel drilling bit |
| 08/31/2004 | US6785641 Simulating the dynamic response of a drilling tool assembly and its application to drilling tool assembly design optimization and drilling performance optimization |
| 08/31/2004 | US6782959 Cutter element with non-linear, expanded crest |
| 08/31/2004 | US6782958 Combination of 80 to 200 mesh macro-crystalline tungsten carbide and 80 to 200 mesh crushed cast carbide |
| 08/31/2004 | CA2198556C Drill bit having springless check valve |
| 08/26/2004 | WO2004072435A1 Cutting element |
| 08/26/2004 | WO2004071710A2 Diamond tool inserts pre-fixed with braze alloys and methods to manufacture thereof |
| 08/26/2004 | US20040167762 Force-balanced roller-cone bits, systems, drilling methods, and design methods |
| 08/26/2004 | US20040163854 Superabrasive cutting elements with cutting edge geometry having enhanced durability, method of producing same, and drill bits so equipped |
| 08/26/2004 | US20040163852 Method and apparatus for boring through a solid material |
| 08/26/2004 | US20040163851 Drill bit cutter element having multiple cusps |
| 08/26/2004 | CA2419876A1 Cutter for tunnel boring machine |
| 08/25/2004 | EP1449604A1 Method for infiltrating preformed components |
| 08/25/2004 | CN2635892Y Lengthened water leakage drill without core taking |
| 08/25/2004 | CN1523197A Drill expanding aiguille of anchor shaft, anchor cable, stake and drill expanding technology |
| 08/24/2004 | US6779951 Drill insert using a sandwiched polycrystalline diamond compact and method of making the same |
| 08/24/2004 | US6779613 Drill bits with controlled exposure of cutters |
| 08/19/2004 | US20040162014 Diamond tape coating and methods of making and using same |
| 08/19/2004 | US20040159471 Novel bits and cutting structures |
| 08/19/2004 | US20040159470 Roller cone drill bit legs |
| 08/19/2004 | US20040159469 Streamlined mill-toothed cone for earth boring bit |
| 08/19/2004 | US20040159468 Advanced expandable reaming tool |
| 08/19/2004 | DE202004008945U1 Method for fitting tubular drilling bit to drill stand with at least two length adjustable radial arms between the drive hub and the top of the tubular drilling bit |
| 08/19/2004 | DE10145603B4 Vorrichtung und Verfahren zum Kanalaufweiten oder -zerstören Apparatus and method for Kanalaufweiten or -zerstören |
| 08/18/2004 | EP1066447B1 Rotary cone drill bit with improved bearing system |
| 08/12/2004 | WO2004067900A1 Roller cutter |
| 08/12/2004 | WO2004046505A3 Bottomhole assembly |
| 08/12/2004 | WO2003086042A9 Method of cleaning hole diggers and spot cultivators and hole digger cleaning device |
| 08/12/2004 | US20040158446 Force-balanced roller-cone bits, systems, drilling methods, and design methods |
| 08/12/2004 | US20040158445 Force-balanced roller-cone bits, systems, drilling methods, and design methods |
| 08/12/2004 | US20040155096 Diamond tool inserts pre-fixed with braze alloys and methods to manufacture thereof |
| 08/12/2004 | US20040154840 Drill bit with diamond impregnated cutter element |
| 08/12/2004 | US20040154836 Advanced expandable reaming tool |
| 08/11/2004 | EP1444404A2 Pile reamer with spoil container |
| 08/11/2004 | CN2632288Y Double-blade artificial synneusis diamond composite sheet |
| 08/11/2004 | CN2632287Y Gravel drilling machine drilling bits |
| 08/10/2004 | US6772849 Protective overlay coating for PDC drill bits |
| 08/10/2004 | US6772848 Superabrasive cutters with arcuate table-to-substrate interfaces and drill bits so equipped |
| 08/05/2004 | WO2004065752A1 Attachment means for drilling equipment |
| 08/05/2004 | US20040149495 Low-contact area cutting element |
| 08/05/2004 | US20040149494 High-strength/high-toughness alloy steel drill bit blank |
| 08/05/2004 | US20040149493 Multi-lobed cutter element for drill bit |
| 08/04/2004 | EP1159510B1 Wellbore primary barrier and related systems |
| 08/04/2004 | CN2630315Y Suspension rotary-expanding shaping machine |
| 08/03/2004 | US6769500 Optimized earth boring seal means |
| 07/29/2004 | WO2004063529A1 Cutting ring for disk rolls pertaining to partial and/or full cutting machines |
| 07/29/2004 | WO2004063522A1 Wellstring assembly |