| Patents for E21B 10 - Drill bits (19,464) |
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| 08/20/2013 | US8511404 Drilling tool, apparatus and method for underreaming and simultaneously monitoring and controlling wellbore diameter |
| 08/20/2013 | US8511403 Steerable ground piercing tools |
| 08/20/2013 | CA2766159C Sealing system and bi-directional thrust bearing arrangement for a downhole motor |
| 08/15/2013 | WO2013119930A1 Shaped cutting elements for earth-boring tools and earth-boring tools including such cutting elements |
| 08/15/2013 | US20130209164 Aligned angled well tool weld joint |
| 08/15/2013 | US20130206483 Method for repairing or reinforcing cutter pockets of a drill bit |
| 08/14/2013 | EP2625636A1 Method and apparatus for efficient implementation of design changes |
| 08/14/2013 | EP2625379A2 Remotely controlled apparatus for downhole applications and related methods |
| 08/14/2013 | EP2625378A2 Remotely controlled apparatus for downhole applications, components for such apparatus, remote status indication devices for such apparatus, and related methods |
| 08/14/2013 | EP2625368A2 Composite materials including nanoparticles, earth-boring tools and components including such composite materials, polycrystalline materials including nanoparticles, and related methods |
| 08/14/2013 | EP2625366A1 Status indicators for use in earth-boring tools having expandable members and methods of making and using such status indicators and earth-boring tools |
| 08/14/2013 | CN203129964U Diamond drill tooth with cobalt content gradient |
| 08/14/2013 | CN203129963U Long screw pitch combined type dual-cone dual-screw spiral drilling bucket |
| 08/14/2013 | CN203129962U Bit-balling-prevention PDC (polycrystalline diamond compact) drill bit |
| 08/14/2013 | CN203129961U Right-angle groove type two-wing-type anchor bolt drill bit |
| 08/14/2013 | CN203129960U Reamer for trenchless construction |
| 08/14/2013 | CN203129959U Fast reamer for trenchless construction |
| 08/14/2013 | CN203129958U Reamer |
| 08/14/2013 | CN203129957U Drilling and scraping integrated well repair drill bit |
| 08/14/2013 | CN203129956U Square drill bit of rotating drill |
| 08/14/2013 | CN103249906A Cemented carbide tool and method for fixing super-hard tip |
| 08/14/2013 | CN103244056A Variable diameter PDC (polycrystalline diamond compact) bit |
| 08/14/2013 | CN102409979B Stone-crushing drill bit |
| 08/13/2013 | USRE44427 Apparatus for directional boring under mixed conditions |
| 08/13/2013 | US8505655 Superabrasive inserts including an arcuate peripheral surface |
| 08/13/2013 | US8505654 Polycrystalline diamond |
| 08/13/2013 | US8505634 Earth-boring tools having differing cutting elements on a blade and related methods |
| 08/13/2013 | US8505620 Method and system for accessing subterranean deposits from the surface and tools therefor |
| 08/13/2013 | CA2720411C An improved rotary roller reamer |
| 08/08/2013 | WO2013116679A1 Cutting element retention for high exposure cutting elements on earth-boring tools |
| 08/08/2013 | WO2013059344A3 Reverse circulation bit assembly |
| 08/08/2013 | US20130199858 Keyseat Wiper |
| 08/08/2013 | US20130199857 Cutting element retention for high exposure cutting elements on earth-boring tools |
| 08/08/2013 | US20130199856 Shaped cutting elements for earth-boring tools and earth-boring tools including such cutting elements |
| 08/08/2013 | US20130199855 Downhole tool |
| 08/08/2013 | US20130199850 Drill bits and methods for forming curved portions of a borehole |
| 08/08/2013 | US20130199693 Wear part |
| 08/08/2013 | DE112009000926B4 Matrixpulver für an einen Matrixkörper angebrachte Schneideinsätze Matrix powder attached to a matrix body cutting inserts |
| 08/07/2013 | EP2623707A1 Method and system for improving drilling speed by using drill string vibration |
| 08/07/2013 | EP2622170A2 Wear resistant material at the shirttail edge and leading edge of a rotary cone drill bit |
| 08/07/2013 | EP2622169A2 Cutting elements, earth-boring tools incorporating such cutting elements, and methods of forming such cutting elements |
| 08/07/2013 | EP2622168A1 Wear resistant material for the shirttail outer surface of a rotary cone drill bit |
| 08/07/2013 | EP2622167A2 Bearings for downhole tools, downhole tools incorporating such bearings, and methods of cooling such bearings |
| 08/07/2013 | EP2622166A2 Drilling system for enhanced coring and method |
| 08/07/2013 | CN203114180U Micro coring bit |
| 08/07/2013 | CN203114179U Button cutter bit for engineering driller |
| 08/07/2013 | CN203114178U Reamer of anti-jamming drill |
| 08/07/2013 | CN203114177U Roller bit of elastic energy storage bearing sealing structure |
| 08/07/2013 | CN203114176U Roller cone PDC combination tooth drill bit |
| 08/07/2013 | CN203114175U Drag bit for engineering driller |
| 08/07/2013 | CN203114173U Inverted plumb line hole constructing device |
| 08/07/2013 | CN103237952A Interface design of TSP shear cutters |
| 08/07/2013 | CN103237951A Wear resistant material for shirttail outer surface of rotary cone drill bit |
| 08/07/2013 | CN103237617A Polycrystalline diamond cutting element and method of using same |
| 08/07/2013 | CN103233683A Device for correcting well wall and enhancing drill gauge protection effect through rolling |
| 08/07/2013 | CN103233682A Micro-positive pressure auto-compensation rock bit lubricating system |
| 08/07/2013 | CN103233466A Construction method for large-diameter bored pile penetrating through deep granular bedding |
| 08/07/2013 | CN101652532B Core drill bit with extended matrix height |
| 08/06/2013 | US8501144 Polycrystalline diamond apparatuses and methods of manufacture |
| 08/06/2013 | US8499861 Ultra-hard composite constructions comprising high-density diamond surface |
| 08/06/2013 | US8499860 Cutting elements having cutting edges with continuous varying radii and bits incorporating the same |
| 08/06/2013 | US8499859 Drill bit having rotational cutting elements and method of drilling |
| 08/06/2013 | US8499857 Downhole jack assembly sensor |
| 08/06/2013 | US8499834 Milling tool for establishing openings in wellbore obstructions |
| 08/06/2013 | CA2695620C Chamfered edge gage cutters, drill bits so equipped, and methods of cutter manufacture |
| 08/06/2013 | CA2537726C Ultrahard composite constructions |
| 08/01/2013 | WO2013112708A1 High thermal conductivity hardfacing |
| 08/01/2013 | WO2013110148A1 Device for enlarging caisson bases |
| 08/01/2013 | US20130192902 Drill Bit |
| 08/01/2013 | US20130192900 Texturing of the bearing surface for a roller cone rock bit |
| 08/01/2013 | US20130192897 Downhole Tool Activation |
| 07/31/2013 | EP2620584A1 Hydraulic brake for a drilling bit |
| 07/31/2013 | EP2619396A1 A rock drill bit for percussive drilling and a rock drill bit button |
| 07/31/2013 | EP2619395A1 Underground reamer |
| 07/31/2013 | CN203097730U Drilling, cutting and flushing integration drilling tool |
| 07/31/2013 | CN203097729U Small-bore double-barrelled double-acting joint drilling tool |
| 07/31/2013 | CN203097728U Hard alloy cone knife |
| 07/31/2013 | CN203097727U Oil exploitation drill bit capable of being recycled and reused |
| 07/31/2013 | CN203097726U Tough diamond compact anchor rod drill bit |
| 07/31/2013 | CN203097725U Three-cutter-wing large opening reverse circulation drill |
| 07/31/2013 | CN203097724U Polycrystalline diamond compact (PDC) bit |
| 07/31/2013 | CN203097723U Rotary jet-flow PDC drill bit |
| 07/31/2013 | CN203097722U Tapered gauge PDC drill bit |
| 07/31/2013 | CN203097721U High-energy percussion rock-breaking PDC (polycrystalline diamond compact) drill bit |
| 07/31/2013 | CN203097720U Concentric slide block simultaneous casing drilling tool, central drill bit and centralizer |
| 07/31/2013 | CN203097719U Self-adaption reamer |
| 07/31/2013 | CN203097718U Powerful reaming drill |
| 07/31/2013 | CN103228859A A down-the-hole hammer |
| 07/31/2013 | CN103225480A Heavy hammer for excavating rock formation and welding processing method |
| 07/30/2013 | US8496076 Polycrystalline compacts including nanoparticulate inclusions, cutting elements and earth-boring tools including such compacts, and methods of forming such compacts |
| 07/30/2013 | CA2648698C Method and apparatus for determining formation resistivity ahead of the bit and azimuthal at the bit |
| 07/25/2013 | WO2013109786A1 Carbide wear surface and method of manufacture |
| 07/25/2013 | WO2013109664A1 Superabrasive-impregnated earth-boring tools with extended features and aggressive compositions, and related methods |
| 07/25/2013 | WO2013108127A2 Hammer improvements |
| 07/25/2013 | WO2013022733A4 Compositions, methods of coating wellbore tools with such compositions, and wellbore tools coated with such compositions |
| 07/25/2013 | US20130186694 Superabrasive-impregnated earth-boring tools with extended features and aggressive compositions, and related methods |
| 07/25/2013 | US20130186693 Hybrid drill bit |
| 07/24/2013 | EP2616625A2 Downhole tools |
| 07/24/2013 | EP2616624A2 Impregnated drill bits with integrated reamers |
| 07/24/2013 | CN203081308U Diamond drill bit reducing nozzle |