EARTH BORING ROTARY BIT AND METHOD

BLUNT-NOSED ROLLER CONE HYBRID BIT

EARTH-BORING TOOL GEOMETRY AND ASSOCIATED APPARATUS AND METHODS

METHOD AND ARTICLE OF MANUFACTURE OF CUTTER FOR PDC CUTTING SYSTEM

Earth-boring tool geometry and cutter placement and associated apparatus and methods

Rotatable multi-head ball bits

Earth boring tools with enhanced hydraulics adjacent cutting elements and methods of forming

Combined crushing super-variable-diameter drill bit for natural gas hydrate exploitation

Wear analysis of drill bits

Fixed cutting structure-composite cone drill bit

Hybrid bit with roller cones having inserts

A HYBRID BIT WITH ROLLER CONE HAVING INSERTS

Drilling systems and hybrid drill bits for drilling in a subterranean formation and methods relating thereto

Rotating cutter single cone bit

Hybrid drill bit and design method

Method and apparatus for reaming well bore surfaces nearer the center of drift

Downhole tools with variable cutting element arrays

SUPERHARD CUTTER HAVING SHIELDED SUBSTRATE

HYBRID ROTARY CONE DRILL BIT

Earth boring tools having fixed blades and rotatable cutting structures and related methods

Laterally oriented cutting structures

Earth-boring tools with reduced vibrational response and related methods

EARTH-BORING ROTARY TOOLS HAVING FIXED BLADES AND ROLLING CUTTER LEGS, AND METHODS OF FORMING SAME

Roller cone drill bit with evenly loaded cutting elements

Durable rock bit for blast hole drilling

By-pass fluid passageway for drill tool

Drill bit for milling composite plugs

Drilling systems and hybrid drill bits for drilling in a subterranean formation and methods relating thereto

Hybrid drill bits having increased drilling efficiency

SUBSURFACE DRILLING TOOL

Earth-boring rotary tools having fixed blades and rolling cutter legs, and methods of forming same

Hybrid drill bits

Method for drilling out a plug using a hybrid rotary cone drill bit

Hybrid rolling cone drill bits and methods for manufacturing same

Rolling cone drill bit having high density cutting elements

Drill bits with anti-tracking features

Rotary drill bits with back-up cutting elements to optimize bit life

ROLLER CUTTER DRILL BIT WITH MIXED BEARING TYPES

SUBSURFACE DRILLING TOOL

Cutter profile for a fixed cutter drill bit

Subsurface drilling tool

Drilling tool and apparatus

Hybrid rotary cone drill bit

Hybrid drill bit and design method

Apparatus and method for retaining inserts of a rolling cone drill bit

Hybrid rolling cone drill bits and methods for manufacturing same

Sintering of thick solid carbonate-based PCD for drilling application

Tricone rock bit for horizontal wells and hard formation wells

Rock bit and cutter teeth geometries

Cutting inserts, cones, earth-boring tools having grading features, and related methods

Drill bit having geometrically sharp inserts

Composite drill bit

Scraping-wheel drill bit

PROTECTIVE INSERTS FOR A ROLLER CONE BIT

Methods of designing earth-boring tools using a plurality of wear state values and related methods of forming earth-boring tools

Method and apparatus for reaming well bore surfaces nearer the center of drift

Rock bit and cutter teeth geometries

SYSTEM AND METHOD FOR LEG RETENTION ON HYBRID BITS

Drill bit with enhanced hydraulics and erosion-shield cutting teeth

TECHNIQUES FOR MODELING/SIMULATING, DESIGNING, OPTIMIZING AND DISPLAYING HYBRID DRILL BITS

Anti-Tracking Feature for Rock Bits

Drill bits with anti-tracking features

Extruded polymer foams containing esters of a sugar and a brominated fatty acid as a flame retardant additive

Manually rotatable tool

DRILL BIT AND DESIGN METHOD FOR OPTIMIZING DISTRIBUTION OF INDIVIDUAL CUTTER FORCES, TORQUE, WORK, OR POWER

Tungsten Carbide Bit with Hardfaced Nose Area

Anti-tracking spear points for earth-boring drill bits

Convex crested insert with deflected wedge surfaces

ROLLER CONES HAVING NON-INTEGRAL CUTTING STRUCTURES, DRILL BITS INCLUDING SUCH CONES, AND METHODS OF FORMING SAME

Self sharpening steel tooth cutting structure

Staggered compact row on same land

Drill bit and cutter element having chisel crest with protruding pilot portion

Bit Cone With Hardfaced Nose

EARTH BORING CUTTER EMPLOYING HELICAL TEETH

Tri-cone bits for horizontal and hard formation drilling applications

Degradation assembly

ARRANGEMENT OF CUTTING ELEMENTS ON ROLLER CONES FOR EARTH BORING BITS

ANTI-TRACKING FEATURE FOR ROCK BITS

Cutting elements and earth-boring tools having grading features

Rolling cone drill bit having cutting elements with improved orientations

Manually rotatable tool

Rolling cone drill bit having high density cutting elements

Drill bit and design method for optimizing distribution of individual cutter forces, torque, work, or power

Retention system

Hybrid drill bit and design method

Impregnated rotary drag bit and related methods

Cutting elements of gage row and first inner row of a drill bit

System, method, and apparatus for predicting tracking by roller cone bits and anti-tracking cutting element spacing

Braze thickness control

Braze thickness control

Degradation assembly shield

Shield of a degradation assembly

Degradation assembly shield

Drill bit and cutting element having multiple cutting edges

Hybrid drill bit with fixed cutters as the sole cutting elements in the axial center of the drill bit

Retention for an insert

High-impact resistant tool

Retention system

Retention system

Degradation insert with overhang

Multiple inserts of different geometry in a single row of a bit

Locking fixture

Locking fixture for a degradation assembly

Drill bits having optimized cutting element counts for reduced tracking and/or increased drilling performance

Degradation assembly

Drill bit and cutter element having chisel crest with protruding pilot portion

Drill bit with cutter element having crossing chisel crests

Rock bit and inserts with a chisel crest having a broadened region

Rock bit and inserts with wear relief grooves

Wear resistant assembly

Two-cone drill bit with enhanced stability

Roller cone drill bits with optimized bearing structures

Method of designing a drill bit, and bits made using said method

Gage configurations for drill bits

Roller cone drill bits with optimized cutting zones, load zones, stress zones and wear zones for increased drilling life and methods

Cutting element having asymmetrical crest for roller cone drill bit

Cutting structure for earth-boring bit to reduce tracking

High density row on roller cone bit

Multiple inserts of different geometry in a single row of a bit

Rock drill bit assembly

Roller cone drill bits with enhanced cutting elements and cutting structures

Arrangement of roller cone inserts

Drill bit and cutter element having aggressive leading side

Hybrid disc bit with optimized PDC cutter placement

Low projection inserts for rock bits

Rolling cone drill bit having cutter elements positioned in a plurality of differing radial positions

Rolling cone drill bit having non-circumferentially arranged cutter elements

Thermally stable diamond cutting elements in roller cone drill bits

Split cone bit

Simulation and modeling of rock removal control over localized zones for rock bit

Cutting elements of gage row and first inner row of a drill bit

Drill bit and cutting inserts for hard/abrasive formations

Fracture and wear resistant compounds and rock bits

Force-balanced roller-cone bits, systems, drilling methods, and design methods

Earth-boring bit with shear cutting elements

Hydro-lifter rock bit with PDC inserts

Method for evaluating and improving drilling operations

Roller cone bits, methods, and systems with anti-tracking variation in tooth orientation

Drilling with mixed tooth types

Two-cone drill bit with enhanced stability

Roller cone drill bits with optimized bearing structures

Cutting elements of gage row and first inner row of a drill bit

Wide groove roller cone bit

Drill bit and cutter element having multiple extensions

Multiple inserts of different geometry in a single row of a bit

Dynamically balanced cutting tool system

Techniques for modeling/simulating, designing optimizing, and displaying hybrid drill bits

Self-Aligning Insert for Drill Bits

Cutting structure based hydraulics

Roller cone drill bits with enhanced drilling stability and extended life of associated bearings and seals

Multi-lobed cutter element for drill bit

Cutting structure for single roller cone drill bit

Cutting element orientation or geometry for improved drill bits

Anti-tracking earth boring bit with selected varied pitch for overbreak optimization and vibration reduction

Methods for designing single cone bits and bits made using the methods

Bending moment

Methods for designing roller cone bits by tensile and compressive stresses

Wear indicator

Roller cone drill bits with enhanced cutting elements and cutting structures

Cutting element arrangement for single roller cone bit

Methods for modeling, designing, and optimizing the performance of drilling tool assemblies

Increased projection for compacts of a rolling cone drill bit

Bowed crests for milled tooth bits

Drill bit arcuate-shaped inserts with cutting edges and method of manufacture

Cutting element structure for roller cone bit

Shaped inserts with increased retention force

Method of designing a drill bit, and bits made using said method

Methods for modeling wear of fixed cutter bits and for designing and optimizing fixed cutter bits

Methods for evaluating and improving drilling operations