135236 ⎘
Drill bits; Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits characterised by the arrangement of teeth or other cutting elements
Fixed cutter drill bit with multiple cutting elements at first radial position to cut core
#302Downhole Cutting Tool Having A Jetted Top Bushing
#303Drill bit and cutters for a drill bit
#304Drilling systems and multi-faced drill bit assemblies
#305Earth-boring tools and methods of forming such earth-boring tools
#306Cutter support element
#307Tracking shearing cutters on a fixed bladed drill bit with pointed cutting elements
#308Spacing of rolling cutters on a fixed cutter bit
#309Formation-engaging element placement on earth-boring tools and related methods
#310Earth-boring tools including movable cutting elements and related methods
#311Cutting elements configured to generate shear lips during use in cutting, earth-boring tools including such cutting elements, and methods of forming and using such cutting elements and earth-boring tools
#312Cutting element, tool and method of cutting within a borehole
#313Earth-boring tools including movable formation-engaging structures and related methods
#314Rolling cutter with side retention
#315Excavation tool
#316PDC bits with cutters laid out in both spiral directions of bit rotation
#317Cutting structures for fixed cutter drill bit and other downhole cutting tools
#318Cutting structures for fixed cutter drill bit and other downhole cutting tools
#319Rotational drill bits and drilling apparatuses including the same
#320Drill bit with extension elements in hydraulic communications to adjust loads thereon
#321Cutting elements for earth-boring tools, earth-boring tools including such cutting elements, and related methods
#322Components of drilling assemblies, drilling assemblies, and methods of stabilizing drilling assemblies in wellbores in subterranean formations
#323Drill bit with continuously sharp edge cutting elements
#324Impregnated bit with improved cutting structure and blade geometry
#325Drilling systems and fixed cutter bits with adjustable depth-of-cut to control torque-on-bit
#326Earth boring tool with improved arrangement of cutter side rakes
#327Stabilizing members for fixed cutter drill bit
#328Pointed working ends on a drill bit
#329Drill bits having depth of cut control features and methods of making and using the same
#330Minimizing stick-slip while drilling
#331Reamer with improved performance characteristics in hard and abrasive formations
#332Drill bit with hydraulically-activated force application device for controlling depth-of-cut of the drill bit
#333Feature to eliminate shale packing/shale evacuation channel
#334Cutting element, tool and method of cutting within a borehole
#335Drilling or abrading tool having a working surface with an array of blind apertures plugged with super-abrasive material
#336Gage cutter protection for drilling bits
#337Drill bits having depth of cut control features and methods of making and using the same
#338Cutting head tool for tunnel boring machine
#339Methods for designing secondary cutting structures for a bottom hole assembly
#340System and method of configuring drilling tools utilizing a critical depth of cut control curve
#341Drill bits with bearing elements for reducing exposure of cutters
#342DRILL BIT OPTIMIZATION BASED MOTION OF CUTTERS
#343System and method of configuring drilling tools utilizing a critical depth of cut control curve
#344System and method of constant depth of cut control of drilling tools
#345System and method of constant depth of cut control of drilling tools
#346Drill bits and methods for forming curved portions of a borehole
#347Extended whipstock and mill assembly
#348Methods for manipulating cutting elements for earth-boring drill bits and tools
#349Cutting assembly suitable for use on a drillable drill bit
#350Drag Drill Bit With Hybrid Cutter Layout Having Enhanced Stability
#351Cutting structures, earth-boring tools including such cutting structures, and related methods
#352Rolling cutter using pin, ball or extrusion on the bit body as attachment methods
#353Drilling apparatus including milling devices configured to rotate at different speeds
#354Dispersion of hardphase particles in an infiltrant
#355Rotary drag bit
#356DRILL BIT WITH DISTRIBUTED FORCE PROFILE
#357Rotary drill and method for the production thereof
#358OPTIMIZATION OF DRILL BIT CUTTING STRUCTURE
#359Cutting elements comprising sensors, earth-boring tools having such sensors, and associated methods
#360Drill bits and drilling apparatuses including the same
#361Earth-boring tools and methods of forming such earth-boring tools
#362Drill bit for boring earth and other hard materials
#363Methods of forming earth-boring tools and related structures
#364Cutting structures for fixed cutter drill bit and other downhole cutting tools
#365CUTTING ELEMENT PLACEMENT ON A FIXED CUTTER DRILL BIT TO REDUCE DIAMOND TABLE FRACTURE
#366High performance wellbore departure and drilling system
#367Kerfing hybrid drill bit and other downhole cutting tools
#368Drill bits with bearing elements for reducing exposure of cutters
#369PDC bits with mixed cutter blades
#370PDC bits with cutters laid out in both spiral directions of bit rotation
#371Shoulder durability enhancement for a PDC drill bit using secondary and tertiary cutting elements
#372Rolling cutter placement on PDC bits
#373Hard Rock Rotary Drill Bit and Method of Drilling Using Crowned Cutter Elements
#374METHODS OF MAKING EARTH-BORING TOOLS AND METHODS OF DRILLING WITH EARTH-BORING TOOLS
#375System and method of improved depth of cut control of drilling tools
#376Diamond impregnated cutting structures, earth-boring drill bits and other tools including diamond impregnated cutting structures, and related methods
#377Subterranean cutting tool structure tailored to intended use
#378Downhole reamer asymmetric cutting structures
#379Drilling apparatus with reduced exposure of cutters and methods of drilling
#380Fixed cutter drill bit for abrasive applications
#381Downhole cutting tool having center beveled mill blade
#382Rotational drill bits and drilling apparatuses including the same
#383Rolling cutter bit design
#384Drill bit
#385Rotary Drill Bits with Optimized Fluid Flow Characteristics
#386Tracking shearing cutters on a fixed bladed drill bit with pointed cutting elements
#387Drag bit with utility blades
#388Multilevel force balanced downhole drilling tools and methods
#389DRILL BIT WITH PREFABRICATED CUTTINGS SPLITTER AND METHOD OF MAKING
#390DRILL BIT WITH INTEGRAL CUTTINGS SPLITTER AND METHOD OF MAKING
#391CASING END TOOL
#392Methods of drilling using differing types of cutting elements
#393Earth-boring tools including abrasive cutting structures and related methods
#394Shaped cutting elements on drill bits and other earth-boring tools, and methods of forming same
#395DRILLING OUT CASING BITS WITH OTHER CASING BITS
#396STABILIZING SYSTEM AND METHODS FOR A DRILL BIT
#397Earth-boring tools having differing cutting elements on a blade and related methods
#398ENHANCED CUTTER PROFILE FOR FIXED CUTTER DRILL BITS
#399Drilling apparatus with reduced exposure of cutters and methods of drilling
#400Drill bit with recessed center
#401Fixed cutter bit for directional drilling applications
#402BACKUP CUTTING ELEMENTS ON NON-CONCENTRIC EARTH-BORING TOOLS AND RELATED METHODS
#403Cutting elements configured to generate shear lips during use in cutting, earth-boring tools including such cutting elements, and methods of forming and using such cutting elements and earth-boring tools
#404Drill bits and tools for subterranean drilling, methods of manufacturing such drill bits and tools and methods of directional and off center drilling
#405Earth-boring tools, methods of making earth-boring tools and methods of drilling with earth-boring tools
#406Impregnated rotary drag bit with enhanced drill out capability
#407Cutting element placement on a fixed cutter drill bit to reduce diamond table fracture
#408Methods for forming earth-boring tools having pockets for receiving cutting elements
#409BACKUP CUTTING ELEMENTS ON NON-CONCENTRIC REAMING TOOLS
#410FIXED CUTTER DRILL BIT FOR ABRASIVE APPLICATIONS
#411Stabilizing members for fixed cutter drill bit
#412Drill bit for use in drilling subterranean formations
#413CASING BITS, DRILLING ASSEMBLIES, AND METHODS FOR USE IN FORMING WELLBORES WITH EXPANDABLE CASING
#414BEARING BLOCKS FOR DRILL BITS, DRILL BIT ASSEMBLIES INCLUDING BEARING BLOCKS AND RELATED METHODS
#415Drill bit with prefabricated cuttings splitter and method of making
#416METHOD AND APPARATUS TO THWART BIT BALLING OF DRILL BITS
#417Drill bits and tools for subterranean drilling, methods of manufacturing such drill bits and tools and methods of off-center drilling
#418Methods of forming and repairing cutting element pockets in earth-boring tools with depth-of-cut control features, and tools and structures formed by such methods
#419DRILL BIT WITH INTEGRAL CUTTINGS SPLITTER AND METHOD OF MAKING
#420Impregnation bit with improved cutting structure and blade geometry
#421Methods, systems, and devices for manipulating cutting elements for earth-boring drill bits and tools
#422Cutting structures for casing component drillout and earth-boring drill bits including same
#423Drill bit with a hybrid cutter profile
#424CUTTER PROFILE HELPING IN STABILITY AND STEERABILITY
#425METHOD OF MANUFACTURING AND REPAIRING FIXED-CUTTER DRAG-TYPE ROTARY TOOLS WITH CUTTING CONTROL STRUCTURES
#426Multi-set PDC drill bit and method
#427Method of designing a bottom hole assembly and a bottom hole assembly
#428Hybrid drill bit with secondary backup cutters positioned with high side rake angles
#429Rotary drill bit with improved steerability and reduced wear
#430HYBRID DRILL BIT
#431Drill bit with continuously sharp edge cutting elements
#432DRILL BIT WITH CONTINUOUSLY SHARP EDGE CUTTING ELEMENTS
#433DRILL BIT WITH CONTINUOUSLY SHARP EDGE CUTTING ELEMENTS
#434Drill bit with continuously sharp edge cutting elements
#435Method of drilling out a reaming tool
#436Cutter Pocket Inserts
#437Drilling out casing bits with other casing bits
#438EARTH BORING DRILL BITS WITH USING OPPOSED KERFING FOR CUTTERS
#439Earth-boring tools including an impact material and methods of drilling through casing
#440Indenting Member for a Drill Bit
#441Rotary drill bit steerable system and method
#442Drill bit having functional articulation to drill boreholes in earth formations in all directions
#443Drill bit having the ability to drill vertically and laterally
#444Fixed cutter bit with backup cutter elements on secondary blades
#445Jack element for a drill bit
#446SHEAR CUTTER DRILL BIT
#447Drill bit cutting structure and methods to maximize depth-of-cut for weight on bit applied
#448MINIMIZING STICK-SLIP WHILE DRILLING
#449Hybrid drill bit and design method
#450Earth-boring tools with primary and secondary blades, methods of forming and designing such earth-boring tools
#451Impregnated rotary drag bit and related methods
#452Drill bits and tools for subterranean drilling
#453Cutting structures for casing component drillout and earth-boring drill bits including same
#454Drag bit with utility blades
#455Methods for designing secondary cutting structures for a bottom hole assembly
#456Earth-boring tools having pockets for receiving cutting elements and methods for forming earth-boring tools including such pockets
#457Single mold milling process
#458Rotationally indexable cutting elements and drill bits therefor
#459Stiffened blade for shear-type drill bit
#460Fixed cutter bit with backup cutter elements on primary blades
#461Drilling tool for reducing cutter damage when drilling through formation changes, and methods of design and operation thereof
#462Passive and active up-drill features on fixed cutter earth-boring tools and related systems and methods
#463Fixed cutter drill bit for abrasive applications
#464Drill bit and a single pass drilling apparatus
#465ROTARY DRAG BIT WITH INCREASED BACK RAKE ANGLE GAUGE CUTTER
#466Rotary drag bit and methods therefor
#467ROTARY DRAG BIT AND METHODS THEREFOR
#468Rotary drag bit with multiple backup cutters
#469Drill bit assembly for directional drilling
#470Earth boring drill bits with casing component drill out capability and methods of use
#471Methods of designing rotary drill bits including at least one substantially helically extending feature
#472Rotary drag bits having a pilot cutter configuraton and method to pre-fracture subterranean formations therewith
#473Drag bits with dropping tendencies and methods for making the same
#474Methods for applying wear-resistant material to exterior surfaces of earth-boring tools and resulting structures
#475Downhole drill bit
#476Pointed diamond working ends on a shear bit
#477Stabilizing system and methods for a drill bit
#478Indenting member for a drill bit
#479Reaming tool suitable for running on casing or liner
#480Drill bit with plural set and single set blade configuration
#481Drill bit with application specific side cutting efficiencies
#482DRILL BIT WITH STAGED DURABILITY, STABILITY AND ROP CHARACTERISTICS
#483Fixed Cutter Bit With Centrally Positioned Backup Cutter Elements
#484Reamer bit
#485Jack element for a drill bit
#486STEERABLE FIXED CUTTER DRILL BIT
#487Fixed cutter drill bit for abrasive applications
#488Drill bits with bearing elements for reducing exposure of cutters
#489Representation of whirl in fixed cutter drill bits
#490Rotary bit with an indenting member
#491Drill bit assembly for directional drilling
#492Drill bit assembly with an indenting member
#493Drill bit assembly with a probe
#494Cutting elements configured for casing component drillout and earth boring drill bits including same
#495Stress balanced cutting structure
#496Mill and pump-off sub
#497Secondary cutting element for drill bit
#498Method for optimizing the location of a secondary cutting structure component in a drill string
#499Drilling apparatus with reduced exposure of cutters and methods of drilling
#500Stable Rotary Drill Bit
#501Stabilizing system and methods for a drill bit
#502Drilling tool equipped with improved cutting element layout to reduce cutter damage through formation changes, methods of design and operation thereof
#503PDC drill bit using optimized side rake distribution that minimized vibration and deviation
#504Fixed-head bit with stabilizing features
#505Method for evaluating and improving drilling operations
#506Earth boring drill bits with casing component drill out capability and methods of use
#507Rotary drill bits including at least one substantially helically extending feature and methods of operation
#508Drill bits with reduced exposure of cutters
#509Method of producing downhole drill bits with integral carbide studs
#510Methods for evaluating and improving drilling operations
#511Instrumented movable drill bit cutter
#512Earth cutting tool, earth cutting device, and related methods
#513Multiple selectable pressure driven devices on a drill bit
#514Cutting element for casing bit
#515Earth-boring bit
#516Reversible displacement auger tool