| Patents for E21B 10 - Drill bits (19,464) |
|---|
| 07/11/2006 | CA2157995C Method and apparatus for manufacturing a rock bit leg |
| 07/06/2006 | WO2006050167B1 Polycrystalline cutter with multiple cutting edges |
| 07/06/2006 | US20060149518 Method for evaluating and improving drilling operations |
| 07/06/2006 | US20060144623 Downhole tool |
| 07/06/2006 | US20060144621 Tool insert |
| 07/06/2006 | US20060144200 Cutting ring for disk rolls pertaining to partial and/or full cutting machines |
| 07/05/2006 | EP1676015A1 Make-up control system for tubulars |
| 07/05/2006 | CN2793292Y Multi-stage and composite drilling bit of drilling rig |
| 07/05/2006 | CN1798899A Drilling apparatus |
| 07/04/2006 | US7070635 composite composed of matrix of coarse diamond interspersed with large agglomerated particles of ultra fine diamond; agglomerated particles produce sharp cutting edges that are protected from impact forces by overall uniform matrix of coarse diamond crystals; highly resistant to spalling and fracture |
| 07/04/2006 | US7070011 Steel body rotary drill bits including support elements affixed to the bit body at least partially defining cutter pocket recesses |
| 07/04/2006 | US7070010 Drill bit |
| 07/04/2006 | CA2384401C Roller cone bits with wear and fracture resistant surface |
| 07/04/2006 | CA2248688C Rock drill bit and a rock drilling tool |
| 06/29/2006 | WO2004074534A3 Diamond tape coating and methods of making and using same |
| 06/28/2006 | CN1795319A Drill bit, system, and method for drilling a borehole in an earth formation |
| 06/28/2006 | CN1795318A Percussive drill bit, drilling system comprising such a drill bit and method of drilling a bore hole |
| 06/27/2006 | US7066288 Asymmetric compact for drill bit |
| 06/27/2006 | US7066287 Mud debris diverter for earth-boring bit |
| 06/27/2006 | US7066286 Gage surface scraper |
| 06/27/2006 | US7066280 Method and apparatus for monitoring and recording of the operating condition of a downhole drill bit during drilling operations |
| 06/27/2006 | US7066279 Pneumatic ground piercing tool |
| 06/22/2006 | WO2005116484A3 Chain drive system |
| 06/22/2006 | US20060131081 Cemented carbide inserts for earth-boring bits |
| 06/22/2006 | US20060131076 Enlarging well bores having tubing therein |
| 06/22/2006 | US20060131075 Percussive drill bit |
| 06/21/2006 | CN2789399Y Resonant ejection nozzle |
| 06/21/2006 | CN1791733A Drill bit and system for drilling a borehole |
| 06/21/2006 | CN1791732A Drill bit and drilling system with underreamer- and stabilisation-section |
| 06/21/2006 | CN1789652A Hydraulic underreamer and sections for use therein |
| 06/21/2006 | CN1789651A Hydraulic underreamer and sections for use therein |
| 06/16/2006 | CA2781651A1 Cemented carbide inserts for earth-boring bits |
| 06/15/2006 | WO2006063136A2 Methods of maximizing retention of superabrasive particles in a metal matrix |
| 06/15/2006 | WO2006043999A3 Cast flapper with hot isostatic pressing treatment |
| 06/15/2006 | US20060124358 Impact resistant PDC drill bit |
| 06/15/2006 | CA2590276A1 Methods of maximizing retention of superabrasive particles in a metal matrix |
| 06/14/2006 | EP1668219A1 Steerable bit assembly and methods |
| 06/13/2006 | US7059432 Cup-shaped rock drill head |
| 06/13/2006 | US7059431 Self-penetrating drilling method and thrust-generating tool for implementing same |
| 06/13/2006 | US7059430 Hydro-lifter rock bit with PDC inserts |
| 06/13/2006 | CA2257885C Non-symmetrical stress-resistant rotary drill bit cutter element |
| 06/10/2006 | CA2528560A1 Impact resistant pdc drill bit |
| 06/10/2006 | CA2487380A1 Method of avoiding the need for a scraper run in drill out operations and a downhole drilling motor assembly |
| 06/08/2006 | WO2006060608A2 Micropore engagement surfaces for earth boring bit |
| 06/08/2006 | WO2006059949A1 Cutting insert with cutting tips anchor portions. |
| 06/08/2006 | US20060122074 reducing wear in cutting head of tunnel boring machine by addition at cutting head of a foamed aqueous liquid composition which comprises a foaming agent and a lubricant, the lubricant being selected from high molecular weight polyethylene oxides and bentonite |
| 06/08/2006 | US20060118341 Drill in particular masonry drill |
| 06/08/2006 | US20060118339 Hole opener |
| 06/08/2006 | US20060118333 Roller cone bits, methods, and systems with anti-tracking variation in tooth orientation |
| 06/08/2006 | US20060118298 Wellstring assembly |
| 06/07/2006 | EP1666670A1 Drilling device |
| 06/07/2006 | EP1664476A1 Rotary roller reamer |
| 06/07/2006 | EP1664474A2 Drilling apparatus, method, and system |
| 06/07/2006 | CN1784533A Stabilising band for a roller assembly |
| 06/07/2006 | CN1782321A Roller cone drill bits with optimized cutting zones, load zones, stress zones and wear zones for increased drilling life and methods |
| 06/07/2006 | CN1258633C Method for drilling and drilling apparatus |
| 06/06/2006 | US7055633 Concrete drill |
| 06/06/2006 | US7055626 Core bit having features for controlling flow split |
| 06/06/2006 | CA2426339C Method for forming a window in a tubular and apparatus for use in said method |
| 06/01/2006 | WO2006056735A1 One trip milling system |
| 06/01/2006 | US20060113117 Multi-use earth auger |
| 06/01/2006 | US20060113116 Roller cone bits with reduced packing |
| 06/01/2006 | US20060113113 Steerable underreamer/stabilizer assembly and method |
| 05/31/2006 | EP1662088A1 Metal-face-seal rock bit and lubricant passage for a rock bit |
| 05/31/2006 | EP1570156B1 Drilling a borehole |
| 05/31/2006 | EP1463844B1 Method of making a tool component |
| 05/31/2006 | EP1387923B1 Drill bit |
| 05/31/2006 | CN2784571Y Wedgy heel ball tooth |
| 05/31/2006 | CN1779209A Special drilling tool of extendable columnar stairstep |
| 05/30/2006 | US7051822 Drill bit and drill tip having a tip-locating structure |
| 05/30/2006 | CA2488687A1 Braze alloy for drilling applications |
| 05/30/2006 | CA2317909C Roller cone drill bit shale diverter |
| 05/30/2006 | CA2199039C A rock drill bit and cutting inserts |
| 05/30/2006 | CA2180312C Tool component |
| 05/26/2006 | WO2006054933A1 Rock drill bit |
| 05/26/2006 | WO2006054079A1 System and method for drilling a borehole |
| 05/26/2006 | WO2004101947A3 Device for drilling a bore in the ground |
| 05/26/2006 | CA2585564A1 Rock drill bit |
| 05/25/2006 | US20060108152 Dart-operated big bore by-pass valve |
| 05/25/2006 | US20060108149 Method and apparatus for forming bored hole |
| 05/25/2006 | US20060107602 Composite material |
| 05/24/2006 | EP1627128A4 Stabilising band for a roller assembly |
| 05/24/2006 | EP1588017A4 Attachment means for drilling equipment |
| 05/24/2006 | CN2783024Y Embedded slide thrust bearing |
| 05/24/2006 | CN2782908Y Percussion bit for mine |
| 05/24/2006 | CN2782907Y Piece shape carbide alloy for mine |
| 05/24/2006 | CN1777736A Wellstring assembly |
| 05/24/2006 | CN1777734A Expanded liner system and method |
| 05/24/2006 | CN1776186A Additional pressure balance device of bearing cavity for tri-cone rotary drill bit |
| 05/24/2006 | CN1776185A High-pressure water jet drill bit capable of punching and cutting by switching of water pressure |
| 05/23/2006 | US7048081 Superabrasive cutting element having an asperital cutting face and drill bit so equipped |
| 05/23/2006 | US7048080 Roller cone bits with wear and fracture resistant surface |
| 05/23/2006 | US7048078 Expandable underreamer/stabilizer |
| 05/23/2006 | CA2260176C Hardfacing rock bit cones for erosion protection |
| 05/19/2006 | CA2527385A1 Directional drill head |
| 05/18/2006 | WO2005074493A3 Anti-tracking earth boring bit with selected varied pitch for overbreak optimization and vibration reduction |
| 05/18/2006 | US20060102389 Polycrystalline cutter with multiple cutting edges |
| 05/17/2006 | EP1656492A1 Downhole hammer drill |
| 05/17/2006 | EP1614852A4 Hole opener |
| 05/17/2006 | EP1556583B1 Method and composition for reducing wear in a cutting head of a tunnel boring machine |