| Patents for E21B 10 - Drill bits (19,464) |
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| 03/13/2008 | US20080060852 Gage configurations for drill bits |
| 03/13/2008 | US20080060851 Drilling head, method of soil improvement work and apparatus thereof |
| 03/13/2008 | US20080060807 Method and system for accessing subterranean deposits from the surface and tools therefor |
| 03/13/2008 | US20080060806 Method and system for accessing subterranean deposits from the surface and tools therefor |
| 03/13/2008 | US20080060805 Method and system for accessing subterranean deposits from the surface and tools therefor |
| 03/13/2008 | US20080060804 Method and system for accessing subterranean deposits from the surface and tools therefor |
| 03/13/2008 | US20080060799 Method and system for accessing subterranean deposits from the surface and tools therefor |
| 03/13/2008 | US20080060571 Method and system for accessing subterranean deposits from the surface and tools therefor |
| 03/12/2008 | EP1706575B1 Drill bit with protection member |
| 03/12/2008 | CN201034016Y Hydraulic adjustable expanding drill bit |
| 03/12/2008 | CN201034015Y Rock reamer with helical centralizer |
| 03/12/2008 | CN101139913A Underground cut-off wall interlocking type drill hammer |
| 03/12/2008 | CN100374685C Cutting tools with two-slope profile and forming method thereof |
| 03/11/2008 | US7341120 Blade edge structure for core drill |
| 03/11/2008 | US7341119 Hydro-lifter rock bit with PDC inserts |
| 03/11/2008 | CA2590269A1 Hydrostatic mechanical seal with local pressurization of seal interface |
| 03/07/2008 | CA2598411A1 Improved gage configurations for drill bits |
| 03/06/2008 | WO2008028131A2 Roller cone drill bits with improved fluid flow |
| 03/06/2008 | WO2008027484A1 Methods for applying wear-resistant material to exterior surfaces of earth-boring tools and resulting structures |
| 03/06/2008 | WO2008027481A1 Recessed extended nozzles for drill bits and drill bits so equipped |
| 03/06/2008 | US20080053711 Cutting element having a self sharpening tip |
| 03/06/2008 | US20080053710 Drill bit with cutter element having multifaceted, slanted top cutting surface |
| 03/06/2008 | US20080053709 Diamond bit steel body cutter pocket protection |
| 03/06/2008 | US20080053708 Recessed extended nozzles for drill bits and drill bits so equipped |
| 03/06/2008 | US20080053705 Steerable bit system assembly and methods |
| 03/05/2008 | EP1895090A1 Method and apparatus for creating a borehole in the ground |
| 03/05/2008 | EP1702134B1 Drilling tool |
| 03/05/2008 | CN201031624Y Argillite layer drilling mouse teeth type diamond composite sheet coring drill |
| 03/05/2008 | CN201031623Y Plunger type follow-drilling hole expanding tools |
| 03/05/2008 | CN201031622Y Drill of rotary dig/drill machine |
| 03/05/2008 | CN201031621Y Sand-back prevention drill |
| 03/05/2008 | CN101137816A Bit for drilling a hole |
| 02/28/2008 | WO2008023089A1 Drilling device for drilling and reaming of a hole |
| 02/28/2008 | US20080047759 Hard material insert for a drill and a drill with the hard material insert |
| 02/28/2008 | US20080047758 Device for Drilling a Bore in the Ground |
| 02/28/2008 | US20080047757 Method and device for producing a borehole in the soil |
| 02/28/2008 | US20080047484 Superabrasive particle synthesis with growth control |
| 02/28/2008 | CA2697238A1 Drilling device for drilling and reaming of a hole |
| 02/27/2008 | EP1891297A2 Novel activating mechanism for controlling the operation of a downhole tool |
| 02/27/2008 | EP1891295A1 Method for manufacturing a cutting pick |
| 02/27/2008 | CN201027494Y Impact resistant diamond drill head |
| 02/27/2008 | CN201027493Y Base cone hob drill head |
| 02/27/2008 | CN201027492Y Diamond drill head |
| 02/27/2008 | CN201027491Y Wire controlled hydraulic pressure vibration drilling-grubbing system |
| 02/27/2008 | CN101131091A Down-hole coal bed air-pressing helix drilling tools and drilling method using the same |
| 02/27/2008 | CN101131069A Hole-digging and temperature-reducing drilling tool for outburst coal seam and drilling method thereof |
| 02/26/2008 | US7334652 Roller cone drill bits with enhanced cutting elements and cutting structures |
| 02/26/2008 | US7334650 Apparatus and methods for drilling a wellbore using casing |
| 02/26/2008 | US7334649 Drilling with casing |
| 02/26/2008 | CA2454496C Expandable bit with a secondary release device |
| 02/21/2008 | WO2008021628A2 Tin seat for rock drill insert |
| 02/21/2008 | WO2008021354A1 Stabilized seal for rock bits |
| 02/21/2008 | WO2008005717A3 Downhole abrading tool having taggants for indicating excessive wear |
| 02/21/2008 | WO2008005714A3 Downhole abrading tools having a hydrostatic chamber and uses therfor |
| 02/21/2008 | WO2007136568A3 Core drill assembly with adjustable total flow area and restricted flow between outer and inner barrel assemblies |
| 02/21/2008 | US20080041635 Seal for an earth bit |
| 02/21/2008 | US20080041634 Earth bit having a wear ring |
| 02/21/2008 | US20080041633 Earth bit having a screen |
| 02/21/2008 | US20080041632 Earth bit having a retaining ring |
| 02/21/2008 | US20080041630 Earth bit having a pressure relief valve |
| 02/21/2008 | US20080041629 Steerable bit system assembly and methods |
| 02/21/2008 | US20080041628 Enhanced Drill Bit Lubrication Apparatus and Method |
| 02/21/2008 | US20080041627 Enhanced Drill Bit Lubrication Apparatus and Method |
| 02/20/2008 | EP1889997A1 Expandable Apparatus for Drift and Reaming a Borehole |
| 02/20/2008 | CN201025046Y Driller for followed tube of wing expansion hole bushing |
| 02/20/2008 | CN201024902Y Hollow compound hard alloy pole tooth |
| 02/20/2008 | CN201024901Y A novel drilling tool |
| 02/20/2008 | CN201024900Y Gear-coated diamond compound sheet |
| 02/20/2008 | CN201024899Y Two-directional spiral sealing extrusion and expansion aiguille |
| 02/20/2008 | CN201024898Y A big-hole diameter impact drilling tool with guiding device |
| 02/20/2008 | CN201024897Y A quick drill pole aiguille for drilling hole of bottom plate |
| 02/20/2008 | CN101128644A Drill bit with stationary cutting structure |
| 02/19/2008 | US7331410 Drill bit arcuate-shaped inserts with cutting edges and method of manufacture |
| 02/19/2008 | CA2422551C Hardfacing for milled tooth drill bits |
| 02/14/2008 | WO2008017846A1 Steerable rotary directional drilling tool for drilling boreholes |
| 02/14/2008 | WO2008017452A1 Drill string and method of making boreholes in the ground |
| 02/14/2008 | WO2007065099A3 Roof drilling system improvements |
| 02/14/2008 | US20080040084 Method of selecting drill bits |
| 02/14/2008 | US20080036280 Pick Assembly |
| 02/14/2008 | US20080036269 Hollow Pick Shank |
| 02/14/2008 | US20080035389 Roof Mining Drill Bit |
| 02/14/2008 | US20080035388 Drill Bit Nozzle |
| 02/14/2008 | US20080035387 Downhole Drill Bit |
| 02/14/2008 | US20080035386 Pick Assembly |
| 02/14/2008 | US20080035385 Auger Bit |
| 02/14/2008 | US20080035384 Tin seat for rock drill insert |
| 02/14/2008 | US20080035383 Non-rotating Pick with a Pressed in Carbide Segment |
| 02/14/2008 | US20080035382 Stabilized Seal for Rock Bits |
| 02/14/2008 | US20080035381 Lubricating drum |
| 02/14/2008 | US20080035380 Pointed Diamond Working Ends on a Shear Bit |
| 02/14/2008 | US20080035379 Stabilizing system and methods for a drill bit |
| 02/14/2008 | US20080035377 Milling of cemented tubulars |
| 02/14/2008 | CA2660452A1 Steerable rotary directional drilling tool for drilling boreholes |
| 02/14/2008 | CA2658668A1 Seal assembly for drill bit |
| 02/13/2008 | CN201021603Y Hard alloy rotary flow nozzle |
| 02/13/2008 | CN201021602Y Tray expansion aiguille for drilling and expansion once shaping |
| 02/13/2008 | CN101122212A Stone inclusion soil abrasive-proof anti-impact drill bit |
| 02/12/2008 | US7328755 Hydraulic drill bit assembly |
| 02/12/2008 | US7328753 Hydraulic breaking hammer with lubricated implement guide sleeve |
| 02/07/2008 | WO2008016868A1 Downhole abrading tool having a taggant injection assembly for indicating excessive wear |