| Patents for E21B 10 - Drill bits (19,464) |
|---|
| 10/08/2013 | CA2536237C Drilling apparatus, method, and system |
| 10/03/2013 | WO2013148983A1 Expandable reamers having sliding and rotating expandable blades, and related methods |
| 10/03/2013 | WO2013148509A1 Identification emitters for determining mill life of a downhole tool and methods of using same |
| 10/03/2013 | WO2013147982A1 Roller cone drill bit with cuttings evacuator |
| 10/03/2013 | WO2013144219A1 Polycrystalline superhard material and method for making same |
| 10/03/2013 | WO2013144204A1 Polycrystalline diamond material and method of forming |
| 10/03/2013 | WO2013143025A1 Double-seal system for bearing of cone bit |
| 10/03/2013 | WO2013143024A1 Energy storage bearing seal ring of cone bit |
| 10/03/2013 | WO2013143023A1 Eccentric constant-width bearing seal groove of cone bit |
| 10/03/2013 | WO2013101264A3 Tungsten carbide bit with hardfaced nose area |
| 10/03/2013 | US20130256039 Polycrystalline compacts including nanoparticulate inclusions and methods of forming such compacts |
| 10/03/2013 | US20130256038 Roller cone drill bit with cuttings evacuator |
| 10/03/2013 | US20130256036 Cutting structures, tools for use in subterranean boreholes including cutting structures and related methods |
| 10/03/2013 | US20130256035 Expandable reamers and methods of using expandable reamers |
| 10/03/2013 | US20130256034 Expandable reamers having sliding and rotating expandable blades, and related methods |
| 10/03/2013 | US20130255161 Cutter assembly with at least one island and a method of manufacturing a cutter assembly |
| 10/02/2013 | EP2643540A2 Downhole traction |
| 10/02/2013 | CN203223181U Screw-type drill bit |
| 10/02/2013 | CN203223180U Stepped type three-wing drill |
| 10/02/2013 | CN203223179U Ground auger bit |
| 10/02/2013 | CN203223178U Mud rock sharp-tooth concave drag type bit |
| 10/02/2013 | CN203223177U Heavy hammer used for excavating rock stratums |
| 10/02/2013 | CN203223176U Hole collapse preventing drill bit capable of being easily drawn out |
| 10/02/2013 | CN203223175U Concrete body opening bottom reamer |
| 10/02/2013 | CN103339339A A rock drill bit for percussive drilling and a rock drill bit button |
| 10/02/2013 | CN103334701A Diamond bit with multilayer combined type drilling teeth |
| 10/02/2013 | CN103334700A Three-wing drag bit applied to petroleum drilling |
| 10/02/2013 | CN103334695A Rotary excavation combined pneumatic down-the-hole hammer drilling pore forming method and device |
| 10/02/2013 | CN102226376B Interlocking butt joint drill bit |
| 10/02/2013 | CN101535597B Drilling tool, self -drilling rock bolt, drill bit, ancoring device for self -drilling rock bolt, shaft for drilling tool and end coupling for drilling tool |
| 10/01/2013 | US8544569 Offset rock bit with pull back adapter |
| 10/01/2013 | US8544568 Shoulder durability enhancement for a PDC drill bit using secondary and tertiary cutting elements |
| 10/01/2013 | US8544567 Drill bit with a flow interrupter |
| 10/01/2013 | US8544566 Fluid actuated impact tool with solid piston-standard bit arrangement and water seal |
| 10/01/2013 | CA2727856C Drill bit magazine, drill bit holder, and method for changing drill bit in rock drilling unit |
| 10/01/2013 | CA2496199C Retrievable center bit |
| 09/26/2013 | WO2013142772A1 Drill bit optimization based motion of cutters |
| 09/26/2013 | WO2013142752A1 Reaming shoe for increased borehole clearance |
| 09/26/2013 | WO2013142640A1 Self-sharpening cutting elements, earth-boring tools including such cutting elements, and methods of forming such cutting elements |
| 09/26/2013 | WO2013142017A1 One trip tubular cleaning and drilling additional open hole |
| 09/26/2013 | WO2013141531A1 Chisel assembly having multiple chisel bars for breaker |
| 09/26/2013 | WO2013090378A3 Selectively actuating expandable reamers and related methods |
| 09/26/2013 | WO2013055931A8 Use of tungsten carbide tube rod to hard-face pdc matrix |
| 09/26/2013 | US20130253836 System and method of configuring drilling tools utilizing a critical depth of cut control curve |
| 09/26/2013 | US20130248260 Drill bits with bearing elements for reducing exposure of cutters |
| 09/26/2013 | US20130248259 Self-sharpening cutting elements, earth-boring tools including such cutting elements, and methods of forming such cutting elements |
| 09/26/2013 | US20130248258 Leached Cutter And Method For Improving The Leaching Process |
| 09/26/2013 | US20130248256 Drill bit optimization based motion of cutters |
| 09/26/2013 | US20130248255 Hard facing configuration for a drilling tool |
| 09/26/2013 | US20130248254 Underground reamer |
| 09/26/2013 | US20130248252 Reaming Shoe for Increased Borehole Clearance |
| 09/26/2013 | DE102012006306A1 Cleaning apparatus used for cleaning auger of drilling excavator, has cleaning device that is set outside the thread portion of auger in original position and is extended up in thread portion of auger in cleaning position |
| 09/25/2013 | EP2642063A1 A drill bit for percussive drilling |
| 09/25/2013 | CN203213964U Diamond location anti-inclining drill bit |
| 09/25/2013 | CN203213963U Alloy tooth column polycrystalline diamond compact (PDC) drill bit |
| 09/25/2013 | CN203213962U Anchor cable hole expanding device located in soft stratum |
| 09/25/2013 | CN203213961U Palm and cone bit |
| 09/25/2013 | CN103328758A Method and apparatus for reducing lubricant pressure pulsation within a rotary cone rock bit |
| 09/25/2013 | CN103328757A Method and apparatus for reducing lubricant pressure pulsation within a rotary cone rock bit |
| 09/25/2013 | CN103321580A Foreign matter cutter for bridge pile holes and cutting and drilling method |
| 09/25/2013 | CN103321579A Multi-claw drill suitable for loosening earth surface soil texture formed holes |
| 09/25/2013 | CN103321578A Deep cavity hollow cylindrical roller bearing for roller bit |
| 09/25/2013 | CN103321577A Cone bit |
| 09/25/2013 | CN103321474A Hole-drilling pole-erecting vehicle |
| 09/25/2013 | CN102425378B Threaded drill bit with sliding chutes |
| 09/25/2013 | CN102322058B Construction process and equipment for downhole impacting high-pressure jet grouting pile |
| 09/25/2013 | CN102174877B Polycrystalline diamond composite sheet |
| 09/25/2013 | CN102155150B Crushing mechanism with gas inlet pipe |
| 09/25/2013 | CN102128013B Diamond impregnated wire line coring geological bit and manufacturing method thereof |
| 09/24/2013 | US8540037 Layered polycrystalline diamond |
| 09/24/2013 | US8540036 Ultrahard sintered carbide particles in hardfacing for earth-boring bit |
| 09/19/2013 | WO2013138766A1 Apparatus and methods for determining whirl of a rotating tool |
| 09/19/2013 | WO2013136113A1 Hybrid drill bit |
| 09/19/2013 | WO2013026718A3 Temperature sensor |
| 09/18/2013 | EP2638243A2 System and method of configuring drilling tools utilizing a critical depth of cut control curve |
| 09/18/2013 | EP2638242A2 Underground drilling apparatus |
| 09/18/2013 | EP2638234A1 Polycrystalline compacts including nanoparticulate inclusions, cutting elements and earth-boring tools including such compacts, and methods of forming same |
| 09/18/2013 | EP2638233A2 Tools for use in subterranean boreholes having expandable members and related methods |
| 09/18/2013 | CN203201560U Safe high-efficiency high-pressure-water cutting adapter sleeve for mining drill bit |
| 09/18/2013 | CN203201498U Soil compacting and discharging drilling rod, spiral drill and pile machine |
| 09/18/2013 | CN203201477U Cutting drill for non-excavation drilling machine |
| 09/18/2013 | CN203201476U Combined drill provided with disc cutter cutting structures on cutter wings |
| 09/18/2013 | CN203201475U Drill provided with rotating disc cutters on cutter wings |
| 09/18/2013 | CN203201474U Drill of double-side supporting disc knife structure |
| 09/18/2013 | CN203201473U Composite drill of palm back cutting structure |
| 09/18/2013 | CN203201472U Rock drilling machine and rotary-cut percussion drilling system thereof |
| 09/18/2013 | CN203201471U Dry-type coring bit |
| 09/18/2013 | CN203201470U Coring bit for bituminous pavement |
| 09/18/2013 | CN103306608A Drill bit and drilling equipment |
| 09/18/2013 | CN103306607A Sliding bearing of roller bit |
| 09/18/2013 | CN103306606A Planetary gear train energy-saving dual-layer drill for drilling of deep oil gas well |
| 09/17/2013 | US8535408 High thermal conductivity hardfacing |
| 09/17/2013 | US8534393 Diamond enhanced cutting elements, earth-boring tools employing diamond-enhanced cutting elements, and methods of making diamond-enhanced cutting elements |
| 09/17/2013 | US8534392 Composite cutting/milling tool having differing cutting elements and method for making the same |
| 09/17/2013 | US8534391 Cutting elements and earth-boring tools having grading features |
| 09/17/2013 | US8534390 Wear resistant material for the shirttail outer surface of a rotary cone drill bit |
| 09/17/2013 | US8534389 Method and apparatus for reducing lubricant pressure pulsation within a rotary cone rock bit |
| 09/17/2013 | US8534379 Apparatus and methods for drilling a wellbore using casing |
| 09/12/2013 | WO2013134596A1 Cutting elements retained within sleeves |
| 09/12/2013 | WO2013134175A1 Spad setting tool |