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)
12/2010
12/22/2010CN201679442U Planetary structure for reverse torque of balance drilling equipment in drilling
12/22/2010CN101048570B Polycrystalline cutter with multiple cutting edges
12/21/2010CA2441456C Method of manufacturing a cutting element from a partially densified substrate
12/16/2010WO2010144837A2 Cutter assemblies, downhole tools incorporating such cutter assemblies and methods of making such downhole tools
12/16/2010WO2010144538A2 Drill bit with weight and torque sensors
12/16/2010US20100314176 Cutter assemblies, downhole tools incorporating such cutter assemblies and methods of making such downhole tools
12/16/2010US20100314175 Rotary drill bit with nozzles designed to enhance hydraulic performance and drilling fluid efficiency
12/15/2010EP2260171A1 Drill bit for a rock drilling tool with increased toughness and method for increasing the toughness of such drill bits
12/15/2010EP1579103B1 Composite tool insert
12/15/2010CN201671549U Diamond drill bit
12/15/2010CN201671548U Diamond compact matrix
12/15/2010CN201671547U PDC drill with gauge having cylinder roller
12/15/2010CN201671546U 空心钻头 Hollow drill
12/15/2010CN101918673A Vibration hammer
12/15/2010CN101377119B PDC drill
12/14/2010US7849938 Ground augering assembly
12/14/2010US7849936 Steerable rotary directional drilling tool for drilling boreholes
12/14/2010CA2551389C Asymmetric graded composites for improved drill bits
12/09/2010WO2010141781A1 Casing bit and casing reamer designs
12/09/2010WO2010141579A2 Cutting elements including cutting tables with shaped faces configured to provide continuous effective positive back rake angeles, drill bits so equipped and methods of drilling
12/09/2010WO2010141575A2 Methods systems and compositions for manufacturing downhole tools and downhole tool parts
12/09/2010WO2010140108A1 Polycrystalline diamond
12/09/2010WO2010078230A4 Drill bits with cutters to cut high side of wellbores
12/09/2010WO2009015003A3 Nozzles including secondary passages, drill assemblies including same and associated methods
12/09/2010US20100307838 Methods systems and compositions for manufacturing downhole tools and downhole tool parts
12/09/2010US20100307837 Casing bit and casing reamer designs
12/09/2010US20100307836 Downhole assembly and cutter assembly
12/09/2010US20100307835 Drill Bit with Weight and Torque Sensors
12/09/2010US20100307829 Cutting elements including cutting tables with shaped faces configured to provide continuous effective positive back rake angles, drill bits so equipped and methods of drilling
12/09/2010US20100307070 Method of fabricating polycrystalline diamond and a polycrystalline diamond compact
12/09/2010US20100307069 Polycrystalline diamond compact
12/09/2010CA2762306A1 Polycrystalline diamond
12/09/2010CA2755564A1 Casing bit and casing reamer designs
12/08/2010EP2258918A2 Methods and systems for designing and/or selecting drilling equipment using predictions of rotary drill bit walk
12/08/2010EP2257686A2 Downhole tool bearing system containing diamond enhanced materials
12/08/2010EP2257685A1 Lubricated diamond bearing drill bit
12/08/2010CN1995689B Pile forming method of pile forming mechanism with gyro bit
12/08/2010CN1922382B Polycrystalline diamond abrasive elements
12/08/2010CN101906938A Drill bit
12/08/2010CN101906937A Compound drill
12/08/2010CN101591911B Bidirectional cement-soil mixing pile machine
12/08/2010CN101575853B Two-way drill rod of cement mixing pile
12/08/2010CN101220730B Exterior lifting and pressing type ream bit for solum hole
12/08/2010CN101144370B Hot pressing high phosphorus iron base diamond drilling bit and preparation method thereof
12/07/2010US7845438 Polycrystalline diamond compacts, methods of fabricating same, and applications using same
12/07/2010US7845437 Hole opener assembly and a cone arm forming a part thereof
12/07/2010US7845436 Cutting element apparatuses, drill bits including same, methods of cutting, and methods of rotating a cutting element
12/07/2010US7845435 Hybrid drill bit and method of drilling
12/07/2010US7845059 Method of forming impregnated diamond cutting structures
12/07/2010CA2479430C Grease filling arrangement in a cutter for a boring head
12/02/2010WO2010138757A1 Milling cap for a polycrystalline diamond compact cutter
12/02/2010WO2010137826A2 Hydraulic breaker
12/02/2010WO2010137798A2 Method and apparatus for drilling large-diameter hole in ground
12/02/2010WO2010136208A1 Wearing element for ground engaging operations with enhanced wear resistance
12/02/2010WO2010136207A1 Wear element for earth/rock working operations with enhanced wear resistance
12/02/2010WO2010080477A4 Hybrid drill bit with secondary backup cutters positioned with high side rake angles
12/02/2010US20100300767 Diamond Bonded Construction with Improved Braze Joint
12/02/2010US20100300766 Convex Crested Insert With Deflected Wedge Surfaces
12/02/2010US20100300765 Modified cutters and a method of drilling with modified cutters
12/02/2010US20100300764 Polycrystalline diamond
12/02/2010US20100300762 Drill bits for drilling wells
12/02/2010US20100300761 Apparatus and methods to optimize fluid flow and performance of downhole drilling equipment
12/02/2010US20100300758 Methods and systems for designing and/or selecting drilling equipment using predictions of rotary drill bit walk
12/02/2010US20100300757 Rotary digging and compression enlarging driller and boring method
12/02/2010US20100300673 Side track bit
12/02/2010CA2762933A1 Wearing element for ground engaging operations with enhanced wear resistance
12/02/2010CA2753854A1 Milling cap for a polycrystalline diamond compact cutter
12/01/2010CN201661243U PDC drill bit with full-size high wear-resistant gauge-protection ring
12/01/2010CN201661242U Large-aperture petroleum drilling and production impactor
12/01/2010CN201661241U Rock crossing reaming bit for screw thread type replaceable hob/roller
12/01/2010CN201661240U Mining tooth wheel drill bit
12/01/2010CN201661239U Roller cone cutter tool and drilling bit
12/01/2010CN101899952A Drilling tool
12/01/2010CN101899951A Drill bit
11/2010
11/30/2010US7844426 Methods for designing fixed cutter bits and bits made using such methods
11/30/2010US7842111 Polycrystalline diamond compacts, methods of fabricating same, and applications using same
11/30/2010US7841428 Polycrystalline diamond apparatuses and methods of manufacture
11/30/2010US7841427 Optimized central PDC cutter and method
11/30/2010US7841426 Hybrid drill bit with fixed cutters as the sole cutting elements in the axial center of the drill bit
11/28/2010CA2703380A1 Diamond bonded construction with improved braze joint
11/27/2010CA2705668A1 Convex crested insert with deflected wedge surfaces
11/26/2010CA2690519A1 Ploughing wedge insert for drag drill bit
11/25/2010WO2010135605A2 Cutting elements, methods for manufacturing such cutting elements, and tools incorporating such cutting elements
11/25/2010WO2010096629A4 Stabilizer assemblies with bearing pad locking structures and tools incorporating same
11/25/2010WO2010093580A3 Methods, systems, and devices for manipulating cutting elements for earth boring drill bits and tools
11/25/2010WO2010088480A3 Earth-boring particle-matrix rotary drill bit and method of making the same
11/25/2010WO2010088233A3 Earth boring tools and bodies of such tools including nozzle recesses, and methods of forming same
11/25/2010US20100294571 Cutting elements, methods for manufacturing such cutting elements, and tools incorporating such cutting elements
11/25/2010US20100294567 Impactor Excavation System Having A Drill Bit Discharging In A Cross-Over Pattern
11/25/2010DE10106695B4 Bohrkrone für einen Bohr- oder Injektionsanker Drill bit for drilling or injection anchor
11/25/2010CA2760984A1 Cutting elements, methods for manufacturing such cutting elements, and tools incorporating such cutting elements
11/24/2010CN201650131U Polycrystalline diamond enhancement type hard alloy body for chisel bit
11/24/2010CN201650130U Diamond bit
11/24/2010CN201650129U Steel PDC drill
11/24/2010CN201650128U Six-blade matrix PDC bit
11/24/2010CN201650127U Five-blade roughcast PDC drill bit
11/24/2010CN201650126U Bit holder used for steel-body type PDC bit and bit with same
11/24/2010CN201650125U Oil-gas well drilling bit in mixed cutting structure
11/24/2010CN201650124U PDC drill bit with five-blade steel body
11/24/2010CN201650123U PDC (Polycrystalline Diamond Compact) bit of seven knife wing casing
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