135242 ⎘
Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of roller type
Sub-classes:NON-UNIFORM ROLLER CONE
#2Polycrystalline Diamond Compact Table with Polycrystalline Diamond Extensions Therefrom
#3Polycrystalline Diamond Compact Table with Polycrystalline Diamond Extensions Therefrom
#4METHOD AND APPARATUS FOR FORMING AN OVERLAY BETWEEN CUTTER POCKETS OF A POLYCRYSTALLINE DIAMOND ROCK BIT
#5Polycrystalline diamond compact table with polycrystalline diamond extensions therefrom
#6Polycrystalline diamond compact table with polycrystalline diamond extensions therefrom
#7WEAR SUPPORT ASSEMBLIES FOR RAISE BORING TOOLS
#8METHOD AND ARTICLE OF MANUFACTURE OF CUTTER FOR PDC CUTTING SYSTEM
#9Precipitate-strengthened hard metal-diamond composite
#10Drill bit for boring earth and other hard materials
#11Drill bit for boring earth and other hard materials
#12Hybrid bit with roller cones having inserts
#13Polycrystalline diamond compact table with polycrystalline diamond extensions therefrom
#14A HYBRID BIT WITH ROLLER CONE HAVING INSERTS
#15TOOLS AND DRILLING SYSTEMS FOR FORMING OR SERVICING A WELLBORE
#16Rolling element with half lock-wedge lock
#17Rolling element with half lock
#18Drilling systems and hybrid drill bits for drilling in a subterranean formation and methods relating thereto
#19Rotating cutter single cone bit
#20Fixed cutter completions bit
#21Split roller cone and PDC composite drill bit
#22Customized drilling tools
#23Polycrystalline diamond compacts and earth-boring tools including such compacts
#24Earth-boring drill bits with controlled cutter speed across the bit face, and related methods
#25Thin-walled earth boring tools and methods of making the same
#26Systems and methods of fabrication and use of wear-resistant materials
#27Polycrystalline diamond constructions with modified reaction zone
#28Earth-boring tools including polymer matrix composite hardfacing material and related methods
#29Erosion resistant hard composite materials
#30HOLE FORMING TOOL WITH AT LEAST ONE ROTATABLE CUTTING MEMBER
#31Drill bit rolling element with retaining ring
#32Bi-center bit and drilling tools with enhanced hydraulics
#33Cutting elements with impact resistant diamond body
#34Methods for forming or servicing a wellbore, and methods of coating surfaces of tools
#35Hardfacing metal parts
#36Drill bit having shear cutters with reduced diameter substrate
#37Durable rock bit for blast hole drilling
#38Customized drilling tools
#39Roller cone earth-boring rotary drill bits including disk heels and related systems and methods
#40Methods of forming polycrystalline diamond
#41Drilling noise categorization and analysis
#42Rolling cones with gage cutting elements, earth-boring tools carrying rolling cones with gage cutting elements and related methods
#43Reaming tool and methods of using the reaming tool in a wellbore
#44Drilling systems and hybrid drill bits for drilling in a subterranean formation and methods relating thereto
#45SUPER HARD CONSTRUCTIONS & METHODS OF MAKING SAME
#46External, divorced PDC bearing assemblies for hybrid drill bits
#47HYBRID BIT WITH ROLLER CONES AND DISCS
#48Sensor-enabled cutting elements for earth-boring tools, earth-boring tools so equipped, and related methods
#49Methods of forming polycrystalline elements from brown polycrystalline tables
#50Polycrystalline compacts for cutting elements, related earth-boring tools, and related methods
#51Low surface friction drill bit body for use in wellbore formation
#52HYBRID DRILL BIT
#53Rolling cutter assemblies
#54Drill bit having improved journal bearings
#55Plow-shaped cutting elements for earth-boring tools, earth-boring tools including such cutting elements, and related methods
#56A ROCK REMOVAL BODY
#57Cutting element retention for high exposure cutting elements on earth-boring tools
#58Earth-boring tools with extended cutting features and related methods
#59Earth-boring tools, drill bits, and diamond-impregnated rotary drill bits including crushed polycrystalline diamond material
#60Superhard constructions and methods of making same
#61Composite drill bit
#62Erosion resistant hard composite materials
#63Hydromill wheel with single disc cutting rollers
#64DRILL BIT FOR HORIZONTAL DIRECTIONAL DRILLING
#65Hardfacing materials including PCD particles, earth-boring tools comprising crushed polycrystalline diamond material, and related methods
#66ULTRA-HARD MATERIAL CUTTING ELEMENTS, METHODS OF FORMING THE SAME AND BITS INCORPORATING THE SAME
#67Rock bit and cutter teeth geometries
#68Rolling cutter with close loop retaining ring
#69Modular cutting-teeth drill bit with controllable drilling specific pressure
#70Cutting element retention for high exposure cutting elements on earth-boring tools
#71Superabrasive-impregnated earth-boring tools with extended features and aggressive compositions, and related methods
#72Rolling cutter with improved rolling efficiency
#73Erosion resistant hard composite materials
#74Composite drill bit
#75Scraping-wheel drill bit
#76Plow-shaped cutting elements for earth-boring tools, earth-boring tools including such cutting elements, and related methods
#77Sensor-enabled cutting elements for earth-boring tools, earth-boring tools so equipped, and related methods
#78Erosion resistant hard composite materials
#79Methods of forming polycrystalline tables and polycrystalline elements
#80Rock bit and cutter teeth geometries
#81Drill bit with enhanced hydraulics and erosion-shield cutting teeth
#82Wear resistant material at the leading edge of the leg for a rotary cone drill bit
#83Wear resistant material for the shirttail outer surface of a rotary cone drill bit
#84Wear resistant material at the shirttail edge and leading edge of a rotary cone drill bit
#85HARDFACING COMPOSITIONS, METHODS OF APPLYING THE HARDFACING COMPOSITIONS, AND TOOLS USING SUCH HARDFACING COMPOSITIONS
#86Methods of forming hardfacing materials including PCD particles, and welding rods including such PCD particles
#87Tungsten Carbide Bit with Hardfaced Nose Area
#88External, divorced PDC bearing assemblies for hybrid drill bits
#89High shear roller cone drill bits
#90Manufacturing methods for high shear roller cone bits
#91Hardfacing materials including PCD particles, welding rods and earth-boring tools including such materials, and methods of forming and using same
#92Roller Cones, Methods of Manufacturing Such Roller Cones, and Drill Bits Incorporating Such Roller Cones
#93Hardfacing compositions, methods of applying the hardfacing compositions, and tools using such hardfacing compositions
#94Composite sintered carbides
#95ROLLER CONES HAVING NON-INTEGRAL CUTTING STRUCTURES, DRILL BITS INCLUDING SUCH CONES, AND METHODS OF FORMING SAME
#96Cemented tungsten carbide rock bit cone
#97Bar trimmers on disk bit
#98Self sharpening steel tooth cutting structure
#99Steel tooth disk with hardfacing
#100BIT LEG OUTER SURFACE PROCESSING USING FRICTION STIR WELDING (FSW)
#101Bit Cone With Hardfaced Nose
#102Steel tooth bit with scooped teeth profile
#103METHOD OF SELECTIVELY ADAPTING MATERIAL PROPERTIES ACROSS A ROCK BIT CONE
#104EARTHBORING TOOL AND METHOD OF CASEHARDENING
#105HARDFACING CONTAINING FULLERENES FOR SUBTERRANEAN TOOLS AND METHODS OF MAKING
#106Barrier coated granules for improved hardfacing material using atomic layer deposition
#107Steel tooth drill bit with improved tooth breakage resistance
#108Hardfacing Composition And Article Having Hardfacing Deposit
#109System, method, and apparatus for passive and active updrill features on roller cone drill bits
#110Earth-boring tools and cutter assemblies having a cutting element co-sintered with a cone structure, methods of using the same
#111Rock bit and inserts with a chisel crest having a broadened region
#112Rock bit and inserts with wear relief grooves
#113SYSTEM, METHOD AND APPARATUS FOR HARDFACING COMPOSITION FOR EARTH BORING BITS IN HIGHLY ABRASIVE WEAR CONDITIONS USING METAL MATRIX MATERIALS
#114Method of designing a drill bit, and bits made using said method
#115Cemented tungsten carbide rock bit cone
#116Rotary rock bit with hardfacing to reduce cone erosion
#117Roller cone drill bits with enhanced cutting elements and cutting structures
#118Roller cone bits with wear and fracture resistant surface
#119Low projection inserts for rock bits
#120Graded hardfacing for drill bits
#121Bit leg and cone hardfacing for earth-boring bit
#122Drill bit cutting elements with selectively positioned wear resistant surface
#123Roller cone drill bits with optimized cutting zones, load zones, stress zones and wear zones for increased drilling life and methods
#124Maintaining carburized case during neutral to the core heat treatment processes
#125Method for hardfacing roller cone drill bit legs
#126Hardfacing milled-tooth drill bits using super dense carbide pellets
#127Wellbore liner system
#128Roller cone drill bits with enhanced cutting elements and cutting structures
#129Barrier coated granules for improved hardfacing material
#130Drill bit arcuate-shaped inserts with cutting edges and method of manufacture
#131Apparatus and method for selective laser-applied cladding
#132Roller cone bits with wear and fracture resistant surface
#133Method of designing a drill bit, and bits made using said method
#134Intelligent blast-hole drill bit with redundant transducer wear sensor and remote recessed reflector antenna
#135Intellegent blast-hole drill bit with redundant transducer wear sensor and remote recessed reflector antenna
#136Polycrystalline diamond compacts including a polycrystalline diamond table having a modified region exhibiting porosity