Patents for E21B 10 - Drill bits (19,464) |
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06/17/2010 | US20100147595 Bearing seal with improved contact width |
06/17/2010 | US20100147594 Reverse nozzle drill bit |
06/17/2010 | CA2746092A1 Real time dull grading |
06/16/2010 | CN201507245U Composite impact-resistant diamond tooth |
06/16/2010 | CN201507244U Drill-bit of mixing pile machine |
06/16/2010 | CN201507243U Tail pipe for high-wind-pressure drill bit |
06/16/2010 | CN201507242U Mono-cone bit |
06/16/2010 | CN1826454B Downhole hammer drill |
06/16/2010 | CN1789651B Cutting component used for hydraulic underreamer |
06/16/2010 | CN101743376A A wired smart reamer |
06/16/2010 | CN101737012A Drilling bit for guiding horizontal roatatably-jetting construction and construction method thereof |
06/16/2010 | CN101737011A Sintering mold of tire body polycrystalline diamond compact bit |
06/16/2010 | CN101737010A Bit Integrated impact, revolution and dry type slag discharge |
06/16/2010 | CN101737005A Drilling tool for sleeving anchor cable and construction method for sleeving anchor cable with simultaneous casing |
06/16/2010 | CN101016826B Bit body of diamond bit and manufacture method therefor |
06/15/2010 | US7735585 Hard material insert for a drill and a drill with the hard material insert |
06/15/2010 | US7735584 Percussion hammer for enlarging drilled holes |
06/15/2010 | US7735583 Roller cone bit bearing with elastomeric seal having self break-in property and method |
06/15/2010 | US7735582 Insertable devices for retention systems, structures for attachment and methods of use |
06/15/2010 | CA2585249C Dual-seal drill bit pressure communication system |
06/15/2010 | CA2568508C Arrangement of roller cone inserts |
06/10/2010 | WO2010065808A2 Method of monitoring wear of rock bit cutters |
06/10/2010 | WO2010065737A2 Trocar-tipped drill bit |
06/10/2010 | WO2010022322A3 Earth-boring metal matrix rotary drill bit |
06/10/2010 | WO2010014725A4 Earth boring drill bits with using opposed kerfing for cutters |
06/10/2010 | US20100141016 Cutting tool for breaking or excavating machines |
06/10/2010 | US20100139988 Drill bit with multiple cutter geometries |
06/10/2010 | US20100139987 Real time dull grading |
06/10/2010 | US20100139886 System and method for geothermal conduit loop in-ground installation and soil penetrating head therefor |
06/10/2010 | CA2745723A1 Method of monitoring wear of rock bit cutters |
06/09/2010 | EP2193252A1 Corrosion protection for head section of earth boring bit |
06/09/2010 | CN201502327U Down-the-hole bit |
06/09/2010 | CN101725324A Hot pressing diamond bit and manufacturing method thereof |
06/09/2010 | CN101725323A Spiral drill |
06/09/2010 | CN101725322A Drill-following reamer |
06/08/2010 | US7730977 Cutting tool insert and drill bit so equipped |
06/08/2010 | US7730976 Impregnated rotary drag bit and related methods |
06/08/2010 | US7730975 Drill bit porting system |
06/08/2010 | US7730972 Downhole turbine |
06/08/2010 | US7730969 Reamer and methods for directional drilling |
06/08/2010 | CA2668911C Expandable underreamer/stabilizer |
06/03/2010 | WO2010019834A3 Bit cone with hardfaced nose |
06/03/2010 | WO2010005890A4 Earth-boring tools having features for affecting cuttings flow and methods of forming the same |
06/03/2010 | US20100133015 Rotary Drill Bit with Improved Steerability and Reduced Wear |
06/03/2010 | US20100133013 Bit for drilling wells and associated drilling method |
06/03/2010 | US20100132510 Two-cone drill bit |
06/02/2010 | EP2191094A1 Down-hole hammer drill |
06/02/2010 | EP1781890B1 Drilling tool with elastomer seal having graded properties |
06/02/2010 | CN201496057U Electrical system of long spiral drilling machine |
06/02/2010 | CN201495991U Gauge protection pad surfacing structure of steel diamond bit |
06/02/2010 | CN201495990U Construction pile driver drill bit |
06/02/2010 | CN201495989U Drill bit of long spiral pile driver |
06/02/2010 | CN101720267A Process of drill bit manufacture |
06/02/2010 | CN101716675A High-strength antioxidant diamond bit matrix powder |
06/01/2010 | US7726421 Diamond-bonded bodies and compacts with improved thermal stability and mechanical strength |
06/01/2010 | US7726420 Cutter having shaped working surface with varying edge chamfer |
06/01/2010 | US7726419 Drill bit, system, and method for drilling a borehole in an earth formation |
06/01/2010 | US7726415 Fixed cutter drill bit |
05/27/2010 | WO2010059457A2 Encapsulated diamond paticles, materials and impregnated diamond earth boring bits including such particles, and methods of forming such particles, materials, and bits |
05/27/2010 | WO2010057707A1 Drilling tool, in particular for drilling and/or cutting devices |
05/27/2010 | WO2010057706A1 Drilling tool for drilling and/or cutting device |
05/27/2010 | WO2009024752A3 Pdc cutter with stress diffusing structures |
05/27/2010 | US20100126779 Cutting element and a method of manufacturing a cutting element |
05/27/2010 | US20100126778 Cutter assembly for a raise boring reamer |
05/27/2010 | US20100126775 Helical chisel insert for rock bits |
05/27/2010 | US20100126773 Drilling apparatus and system for drilling wells |
05/27/2010 | US20100126771 Methods and Apparatus For Controlling Cutting Ribbons During A Drilling Operation |
05/27/2010 | DE102008043999A1 Bohrwerkzeug insbesondere für Bohr- und/oder Meißelgeräte Drilling tool especially for drilling and / or chisel devices |
05/27/2010 | DE10103143B4 Gesteinsbohrer Rock drill |
05/26/2010 | EP2189617A1 Digging tool, digging bit, and device |
05/26/2010 | EP2188485A1 Roller cone bit provided with anti-tracking cutting element spacing |
05/26/2010 | CN201486578U Roof bolter |
05/26/2010 | CN201486481U PDC drill bit stick-slip vibration absorber |
05/26/2010 | CN201486477U Shell type drill shank |
05/26/2010 | CN201486472U Diamond-impregnated roller combined bit |
05/26/2010 | CN201486471U Locking and dismounting device of locking nut of reaming bit center pipe |
05/26/2010 | CN201486470U Tooth-wheel drill bit of boring cast-in-place pile |
05/26/2010 | CN1952343B Mechanical self-excited interactive hydraulic pulse drill bit pup joint |
05/26/2010 | CN1952342B Drill bit with pulse generation cavity |
05/26/2010 | CN1707065B Drill |
05/26/2010 | CN101713280A Natural diamond impregnated bit for geological exploration and preparation method thereof |
05/25/2010 | US7721827 Rock bit having a seal gland with a conical sealing surface |
05/25/2010 | US7721826 Downhole jack assembly sensor |
05/25/2010 | US7721824 Multiple inserts of different geometry in a single row of a bit |
05/25/2010 | US7721823 Moveable blades and bearing pads |
05/25/2010 | CA2477644C Apparatus and method for selective laser-applied cladding |
05/24/2010 | CA2685668A1 A cutting element and a method of manufacturing a cutting element |
05/20/2010 | WO2010057079A1 Centralized bi-center reamer and method of use |
05/20/2010 | WO2010056641A2 Pilot reamer with composite framework |
05/20/2010 | WO2010056478A1 Methods of attaching a shank to a body of an earth-boring drilling tool, and tools formed by such methods |
05/20/2010 | WO2010056476A2 Carburized monotungsten and ditungsten carbide eutectic particles, materials and earth-boring tools including such particles, and methods of forming such particles, materials, and tools |
05/20/2010 | WO2009152195A4 Methods of forming earth-boring tools including sinterbonded components and tools formed by such methods |
05/20/2010 | WO2009029649A3 Chamfered edge gage cutters, drill bits so equipped, and methods of cutter manufacture |
05/20/2010 | US20100122853 Encapsulated diamond particles, materials and impregnated diamond earth-boring bits including such particles, and methods of forming such particles, materials, and bits |
05/20/2010 | US20100122852 Ultra-hard constructions with enhanced second phase |
05/20/2010 | US20100122848 Hybrid drill bit |
05/20/2010 | DE102008053276A1 Drill bit for use in drilling fixture for superimposing drills, has circular base body forming circular cutting surface, which is provided with cutting elements partially formed as point cuts and as surface cuts |
05/20/2010 | CA2742481A1 Pilot reamer with composite framework |
05/19/2010 | CN201474618U Multistage alloy leading roller bit |
05/19/2010 | CN201474617U Diamond drill bit gauge protection gear section structure |