| Patents for E21B 10 - Drill bits (19,464) |
|---|
| 09/15/2009 | CA2486682C A downhole tool for use in a wellbore |
| 09/15/2009 | CA2388793C Under reamer |
| 09/11/2009 | WO2009006511A4 Earth boring drill bits made from a low-carbon, high-molybdenum alloy |
| 09/10/2009 | US20090223721 Sectorial force balancing of drill bits |
| 09/10/2009 | US20090223719 Dual string orbital drilling system |
| 09/09/2009 | EP2097611A1 Detritus flow management features for drag bit cutters and bits so equipped |
| 09/09/2009 | EP2097610A1 Expandable reamers for earth-boring applications and methods of using the same |
| 09/09/2009 | EP1904713B1 System5 method, and apparatus for reducing residual stress in as-welded roller cone bit ball plug welds |
| 09/09/2009 | CN201306124Y A forward-drilling hole dilating drill for raise boring machine |
| 09/09/2009 | CN201306123Y Composite cushioned drill bit |
| 09/09/2009 | CN101529045A Bearing insert sleeve for roller cone bit |
| 09/09/2009 | CN101525982A Drill bit with removable inner core for drilling |
| 09/09/2009 | CN101525981A Steel shot drilling technology |
| 09/09/2009 | CN101525980A Force balance pdc drill bit |
| 09/08/2009 | US7585366 High pressure superabrasive particle synthesis |
| 09/08/2009 | US7584811 Reaming and stabilization tool and method for its use in a borehole |
| 09/08/2009 | CA2546955C Thermally stable diamond brazing |
| 09/03/2009 | WO2009086302A3 Oriented pyramid inserts |
| 09/03/2009 | US20090218146 Polycrystalline Abrasive Composite Cutter |
| 09/03/2009 | US20090218140 Reamer With Balanced Cutting Structure For Use In A Wellbore |
| 09/02/2009 | EP2094936A1 Cutting bit with split wear ring and method of making same |
| 09/02/2009 | EP2094935A2 Expandable reamers for earth boring applications |
| 09/02/2009 | EP2094934A2 Restriction element trap for use with and actuation element of a downhole apparatus and method of use |
| 09/02/2009 | EP2094419A1 Rock drill |
| 09/02/2009 | EP2094417A2 Displacement members and methods of using such displacement members to form bit bodies of earth boring rotary drills bits |
| 09/02/2009 | CN201301668Y Turbo wave tooth thin-walled drill |
| 09/02/2009 | CN201301667Y Drill bit with integration of shock, rotation and dry slag removal |
| 09/01/2009 | US7581602 Downhole hammer drill |
| 09/01/2009 | CA2438454C Reamer having toroidal crusher body and method of use |
| 08/27/2009 | WO2009105420A2 Downhole tool bearing system containing diamond enhanced materials |
| 08/27/2009 | US20090211816 Magnetic bit sub |
| 08/27/2009 | US20090211812 Boring head method and boring head for a ground boring device |
| 08/27/2009 | DE102008005276B3 Vorrichtung zur Herstellung von Bohrungen Apparatus for producing bore holes |
| 08/27/2009 | CA2714749A1 Downhole tool bearing system containing diamond enhanced materials |
| 08/26/2009 | EP2092155A2 Fiber-containing diamond-impregnated cutting tools |
| 08/26/2009 | EP2092154A2 Rotary drag bits having a pilot cutter configuration and method to pre-fracture subterranean formations therewith |
| 08/26/2009 | EP2092153A2 System for steering a drill string |
| 08/26/2009 | CN201297132Y A novel sealing system of high speed roller bit bearing |
| 08/26/2009 | CN101517189A Protector for rock bit seals |
| 08/26/2009 | CN101514608A High-temperature resistant drill bit |
| 08/26/2009 | CN100532778C Rock drill bit |
| 08/25/2009 | CA2423102C Polycrystalline diamond with a surface depleted of catalyzing material |
| 08/20/2009 | WO2009103055A2 Insertable devices for retention systems, structures for attachment and methods of use |
| 08/20/2009 | WO2009101476A2 Directional drilling system |
| 08/20/2009 | WO2009052130A4 System, method, and apparatus for variable junk slot depth in drill bit body to alleviate balling |
| 08/20/2009 | WO2009046075A4 Drill bits and tools for subterranean drilling |
| 08/20/2009 | US20090205873 Downhole tool bearing system containing diamond enhanced materials |
| 08/20/2009 | US20090205870 Insertable devices for retention systems, structures for attachment and methods of use |
| 08/20/2009 | CA2714631A1 Insertable devices for retention systems, structures for attachment and methods of use |
| 08/20/2009 | CA2710204A1 Directional drilling system |
| 08/19/2009 | EP2089605A2 Discrete element modeling of rock destruction under high pressure conditions |
| 08/19/2009 | EP2089604A1 Earth-boring rotary drill bits including bit bodies comprising reinforced titanium or titanium-based alloy matrix materials, and methods for forming such bits |
| 08/19/2009 | CN201292774Y Diamond compact drill |
| 08/19/2009 | CN201292773Y PDC drill for drilling flexible and hard interactive strata |
| 08/19/2009 | CN201292772Y Oblique-resisting PDC drill |
| 08/19/2009 | CN201292771Y Expansion structure of reaming tool while drilling |
| 08/19/2009 | CN201292770Y High strength eccentric reaming tool |
| 08/19/2009 | CN201292769Y Well drilling reaming traction tool |
| 08/19/2009 | CN201292768Y Sidetrack horizontal well reamer |
| 08/19/2009 | CN201292767Y Eccentric boring tool |
| 08/19/2009 | CN201292766Y Steel tooth roller bit |
| 08/19/2009 | CN201292765Y Novel composite drill |
| 08/19/2009 | CN101512097A Drilling equipment |
| 08/19/2009 | CN101512096A Integrated hinge assembly with spring biased prop arm |
| 08/19/2009 | CN101509353A Piston type multilayer expanding bit |
| 08/19/2009 | CN101509352A Drill with flexible nozzle |
| 08/19/2009 | CN101509351A Non-damage drilling head |
| 08/18/2009 | US7575805 Polycrystalline diamond abrasive elements |
| 08/18/2009 | US7575074 Drilling head for an anchor |
| 08/13/2009 | US20090200081 Shear cutter drill bit |
| 08/12/2009 | EP2087196A1 Drill bit nozzle assembly, insert assembly including same and method of manufacturing or retrofitting a steel body bit for use with the insert assembly |
| 08/12/2009 | CN201288512Y Triangular glomerocryst drill |
| 08/12/2009 | CN201288511Y Special shaped alloy drill |
| 08/12/2009 | CN201288510Y Coarse granule natural diamond impregnated drill |
| 08/12/2009 | CN201288509Y Oriented PDC drill with great controllability |
| 08/12/2009 | CN201288508Y Screw drilling toll for large diameter PDC drill |
| 08/12/2009 | CN201288507Y Natural diamond surface set reamer |
| 08/12/2009 | CN201288506Y Pipe following self-detaching combination structure |
| 08/12/2009 | CN201288326Y Multiway multi-shaft agitating drill |
| 08/12/2009 | CN101506459A PCD cutters with enhanced working surfaces adjacent a cavity |
| 08/12/2009 | CN101503945A Double-thread hollow coring bit |
| 08/12/2009 | CN100526595C Disciform PDC drill-following reaming bit |
| 08/11/2009 | US7571782 Stiffened blade for shear-type drill bit |
| 08/11/2009 | US7571781 Auger bit |
| 08/11/2009 | US7571780 Jack element for a drill bit |
| 08/08/2009 | CA2620711A1 Shear cutter drill bit |
| 08/06/2009 | WO2009066907A3 Drill body with air-hammer for inducing reverse circulation effectively and drilling method using the same |
| 08/06/2009 | US20090194339 Earth boring bit with wear resistant bearing and seal |
| 08/06/2009 | US20090194335 Rotary roller reamer |
| 08/06/2009 | DE102008007123A1 Broaching tool i.e. piston like broaching tool, for enlargement of pilot bore in e.g. concrete with clay or sulphate resources, has elastic strips connected with each other at ends in ring shape, and tension rod arranged between strips |
| 08/05/2009 | EP2010746B1 High density row on roller cone bit |
| 08/05/2009 | EP1974119B1 Seal insert ring for roller cone bits |
| 08/05/2009 | CN201284623Y Composite long fin piece scraper type steel PDC drilling bit |
| 08/05/2009 | CN201284622Y Barrel type alloy bit |
| 08/05/2009 | CN201284620Y 注水式钻孔机 Water injection drilling machine |
| 08/05/2009 | CN101501292A Stabilized seal for rock bits |
| 08/04/2009 | US7571083 Method of designing a drill bit, and bits made using said method |
| 08/04/2009 | US7568534 Dual-edge working surfaces for polycrystalline diamond cutting elements |
| 07/30/2009 | WO2009065575A3 Adjustable drill bit |
| 07/30/2009 | US20090188725 Hard formation insert and process for making the same |