Patents
Sitemap › E21 - Earth or rock drilling; Mining › E21B - Earth or rock drilling; Obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells › E21B 10 - Drill bits
Patents for E21B 10 - Drill bits (19,464)
06/2010
06/17/2010US20100147595 Bearing seal with improved contact width
06/17/2010US20100147594 Reverse nozzle drill bit
06/17/2010CA2746092A1 Real time dull grading
06/16/2010CN201507245U Composite impact-resistant diamond tooth
06/16/2010CN201507244U Drill-bit of mixing pile machine
06/16/2010CN201507243U Tail pipe for high-wind-pressure drill bit
06/16/2010CN201507242U Mono-cone bit
06/16/2010CN1826454B Downhole hammer drill
06/16/2010CN1789651B Cutting component used for hydraulic underreamer
06/16/2010CN101743376A A wired smart reamer
06/16/2010CN101737012A Drilling bit for guiding horizontal roatatably-jetting construction and construction method thereof
06/16/2010CN101737011A Sintering mold of tire body polycrystalline diamond compact bit
06/16/2010CN101737010A Bit Integrated impact, revolution and dry type slag discharge
06/16/2010CN101737005A Drilling tool for sleeving anchor cable and construction method for sleeving anchor cable with simultaneous casing
06/16/2010CN101016826B Bit body of diamond bit and manufacture method therefor
06/15/2010US7735585 Hard material insert for a drill and a drill with the hard material insert
06/15/2010US7735584 Percussion hammer for enlarging drilled holes
06/15/2010US7735583 Roller cone bit bearing with elastomeric seal having self break-in property and method
06/15/2010US7735582 Insertable devices for retention systems, structures for attachment and methods of use
06/15/2010CA2585249C Dual-seal drill bit pressure communication system
06/15/2010CA2568508C Arrangement of roller cone inserts
06/10/2010WO2010065808A2 Method of monitoring wear of rock bit cutters
06/10/2010WO2010065737A2 Trocar-tipped drill bit
06/10/2010WO2010022322A3 Earth-boring metal matrix rotary drill bit
06/10/2010WO2010014725A4 Earth boring drill bits with using opposed kerfing for cutters
06/10/2010US20100141016 Cutting tool for breaking or excavating machines
06/10/2010US20100139988 Drill bit with multiple cutter geometries
06/10/2010US20100139987 Real time dull grading
06/10/2010US20100139886 System and method for geothermal conduit loop in-ground installation and soil penetrating head therefor
06/10/2010CA2745723A1 Method of monitoring wear of rock bit cutters
06/09/2010EP2193252A1 Corrosion protection for head section of earth boring bit
06/09/2010CN201502327U Down-the-hole bit
06/09/2010CN101725324A Hot pressing diamond bit and manufacturing method thereof
06/09/2010CN101725323A Spiral drill
06/09/2010CN101725322A Drill-following reamer
06/08/2010US7730977 Cutting tool insert and drill bit so equipped
06/08/2010US7730976 Impregnated rotary drag bit and related methods
06/08/2010US7730975 Drill bit porting system
06/08/2010US7730972 Downhole turbine
06/08/2010US7730969 Reamer and methods for directional drilling
06/08/2010CA2668911C Expandable underreamer/stabilizer
06/03/2010WO2010019834A3 Bit cone with hardfaced nose
06/03/2010WO2010005890A4 Earth-boring tools having features for affecting cuttings flow and methods of forming the same
06/03/2010US20100133015 Rotary Drill Bit with Improved Steerability and Reduced Wear
06/03/2010US20100133013 Bit for drilling wells and associated drilling method
06/03/2010US20100132510 Two-cone drill bit
06/02/2010EP2191094A1 Down-hole hammer drill
06/02/2010EP1781890B1 Drilling tool with elastomer seal having graded properties
06/02/2010CN201496057U Electrical system of long spiral drilling machine
06/02/2010CN201495991U Gauge protection pad surfacing structure of steel diamond bit
06/02/2010CN201495990U Construction pile driver drill bit
06/02/2010CN201495989U Drill bit of long spiral pile driver
06/02/2010CN101720267A Process of drill bit manufacture
06/02/2010CN101716675A High-strength antioxidant diamond bit matrix powder
06/01/2010US7726421 Diamond-bonded bodies and compacts with improved thermal stability and mechanical strength
06/01/2010US7726420 Cutter having shaped working surface with varying edge chamfer
06/01/2010US7726419 Drill bit, system, and method for drilling a borehole in an earth formation
06/01/2010US7726415 Fixed cutter drill bit
05/2010
05/27/2010WO2010059457A2 Encapsulated diamond paticles, materials and impregnated diamond earth boring bits including such particles, and methods of forming such particles, materials, and bits
05/27/2010WO2010057707A1 Drilling tool, in particular for drilling and/or cutting devices
05/27/2010WO2010057706A1 Drilling tool for drilling and/or cutting device
05/27/2010WO2009024752A3 Pdc cutter with stress diffusing structures
05/27/2010US20100126779 Cutting element and a method of manufacturing a cutting element
05/27/2010US20100126778 Cutter assembly for a raise boring reamer
05/27/2010US20100126775 Helical chisel insert for rock bits
05/27/2010US20100126773 Drilling apparatus and system for drilling wells
05/27/2010US20100126771 Methods and Apparatus For Controlling Cutting Ribbons During A Drilling Operation
05/27/2010DE102008043999A1 Bohrwerkzeug insbesondere für Bohr- und/oder Meißelgeräte Drilling tool especially for drilling and / or chisel devices
05/27/2010DE10103143B4 Gesteinsbohrer Rock drill
05/26/2010EP2189617A1 Digging tool, digging bit, and device
05/26/2010EP2188485A1 Roller cone bit provided with anti-tracking cutting element spacing
05/26/2010CN201486578U Roof bolter
05/26/2010CN201486481U PDC drill bit stick-slip vibration absorber
05/26/2010CN201486477U Shell type drill shank
05/26/2010CN201486472U Diamond-impregnated roller combined bit
05/26/2010CN201486471U Locking and dismounting device of locking nut of reaming bit center pipe
05/26/2010CN201486470U Tooth-wheel drill bit of boring cast-in-place pile
05/26/2010CN1952343B Mechanical self-excited interactive hydraulic pulse drill bit pup joint
05/26/2010CN1952342B Drill bit with pulse generation cavity
05/26/2010CN1707065B Drill
05/26/2010CN101713280A Natural diamond impregnated bit for geological exploration and preparation method thereof
05/25/2010US7721827 Rock bit having a seal gland with a conical sealing surface
05/25/2010US7721826 Downhole jack assembly sensor
05/25/2010US7721824 Multiple inserts of different geometry in a single row of a bit
05/25/2010US7721823 Moveable blades and bearing pads
05/25/2010CA2477644C Apparatus and method for selective laser-applied cladding
05/24/2010CA2685668A1 A cutting element and a method of manufacturing a cutting element
05/20/2010WO2010057079A1 Centralized bi-center reamer and method of use
05/20/2010WO2010056641A2 Pilot reamer with composite framework
05/20/2010WO2010056478A1 Methods of attaching a shank to a body of an earth-boring drilling tool, and tools formed by such methods
05/20/2010WO2010056476A2 Carburized monotungsten and ditungsten carbide eutectic particles, materials and earth-boring tools including such particles, and methods of forming such particles, materials, and tools
05/20/2010WO2009152195A4 Methods of forming earth-boring tools including sinterbonded components and tools formed by such methods
05/20/2010WO2009029649A3 Chamfered edge gage cutters, drill bits so equipped, and methods of cutter manufacture
05/20/2010US20100122853 Encapsulated diamond particles, materials and impregnated diamond earth-boring bits including such particles, and methods of forming such particles, materials, and bits
05/20/2010US20100122852 Ultra-hard constructions with enhanced second phase
05/20/2010US20100122848 Hybrid drill bit
05/20/2010DE102008053276A1 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
05/20/2010CA2742481A1 Pilot reamer with composite framework
05/19/2010CN201474618U Multistage alloy leading roller bit
05/19/2010CN201474617U Diamond drill bit gauge protection gear section structure
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