135225 ⎘
Drill bits; Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with expansible cutting tools
Sub-classes:BRAKE AND WEAR INDICATOR FOR EXPANDABLE DOWNHOLE TOOL
#2DEVICE AND ITS APPLICATION METHOD FOR IN-SITU CUTTING SOIL IN BOREHOLE
#3Post Hole Belling Auger
#4WELLBORE DRILL BIT WITH STATIONARY AND EXPANDABLE BLADES
#5DRILLING HEAD ASSEMBLY WITH LATCHING SYSTEM AND FLUID RETENTION MECHANISM
#6DRILLING HEAD ASSEMBLY WITH LATCHING SYSTEM AND FLUID RETENTION MECHANISM
#7BRAKE AND WEAR INDICATOR FOR EXPANDABLE DOWNHOLE TOOL
#8COAL MINING SYSTEM AND METHOD OF DUAL CIRCULATION DRILLING WITH MECHANICAL REAMING AND ABRASIVE JET
#9Wellbore Notching Assembly
#10REAMERS WITH IMPROVED DURABILITY AND/OR STABILITY
#11METHOD AND SYSTEM FOR MINING
#12In-situ shear test device for holes in rock-soil mass
#13Post Hole Belling Auger
#14Devices, systems, and methods for expandable block sets
#15Multi-activation reamer with activation confirmation
#16Casing mill, method, and system
#17CASING MILL, METHOD, AND SYSTEM
#18Drilling system and method of using same
#19Hybrid bit including earth boring and percussion elements for drilling earth formations
#20Intelligent circulating sub for rotary/sliding drilling system and method
#21Instrumented cutter
#22Method and system for mining
#23REDUCED DIFFERENTIAL STICKING DRILLING COLLAR
#24Post hole belling auger
#25DIAMETER-ENLARGED HOLE PORTION FORMING DEVICE
#26DRILL STRING
#27Deploying material to limit losses of drilling fluid in a wellbore
#28Deploying material to limit losses of drilling fluid in a wellbore
#29Point-the-bit bottom hole assembly with reamer
#30Expandable cutting tool
#31Reamer block with cutter pocket holders
#32Combined crushing super-variable-diameter drill bit for natural gas hydrate exploitation
#33Drilling system and method of using same
#34Drilling bottom hole methods for loss circulation mitigation
#35Underground reamer
#36Marking and sensing a borehole wall
#37System for extracting gas from tectonically-deformed coal seam in-situ by depressurizing horizontal well cavity
#38Method of extracting gas from tectonically-deformed coal seam in-situ by depressurizing horizontal well cavity
#39Intelligent reamer for rotary/sliding drilling system and method
#40Instrumented rotary tool with compliant connecting portions
#41Hybrid bit including earth-boring and percussion elements for drilling earth formations
#42Cutting tool with pivotally fixed cutters
#43Downhole apparatus and method of use
#44Supporting a string within a wellbore with a smart stabilizer
#45Borehole cross-section steering
#46Hydraulic motor for a drilling system
#47Sensor activated downhole cutting tool
#48Hole drilling device for forming expanded-diameter hole portion
#49Drilling tool with near-bit electronics
#50Spline insert for a downhole tool
#51Methods and systems for detecting relative positions of downhole elements in downhole operations
#52Metal matrix composite material for additive manufacturing of downhole tools
#53SINGLE-TRIP CASING CUTTING AND BRIDGE PLUG SETTING
#54Method of drilling with an extensible pad
#55Adjustable Cutting Mill Assembly and Methods of Operation
#56Extendable cutting tools for use in a wellbore
#57Expandable downhole tool assemblies, bottom-hole assemblies, and related methods
#58Notching a wellbore while drilling
#59Hybrid bit including earth-boring and percussion elements for drilling earth formations
#60Selective downhole actuator
#61Tool positioning and latching system
#62Drill bit and method for casing while drilling
#63Drilling bottom hole assembly for loss circulation mitigation
#64Downhole stuck object removal tool
#65Drilling device
#66Drilling system drag member for simultaneous drilling and reaming
#67Intelligent reamer for rotary/sliding drilling system and method
#68Extendable element systems for downhole tools
#69Expandable junk mill stabilizer
#70BOTTOMHOLE ASSEMBLY
#71Shaft enlargement arrangement for a boring system
#72System and method for detection of actuator launch in wellbore operations
#73Latchable casing while drilling systems and methods
#74DRILLING TOOL
#75Drilling apparatus with extensible pad
#76Downhole rotary cutting tool
#77Reamer
#78Reamer
#79Support features for extendable elements of a downhole tool body, tool bodies having such support features and related methods
#80Underreamer with Radial Expandable Cutting Blocks
#81RFID device for use downhole
#82Controller for downhole tool
#83Cutting structure with blade having multiple cutting edges
#84Cutting structure of a downhole cutting tool
#85Flexible tool housing
#86Surface coating for metal matrix composites
#87TWO-PHASE MANUFACTURE OF METAL MATRIX COMPOSITES
#88Cutting structures, tools for use in subterranean boreholes including cutting structures and related methods
#89Tool positioning and latching system
#90Methods of forming earth-boring tools utilizing expandable reamer blades
#91Expandable reamer
#92PARTICLE EXCLUSION AND ACCUMULATION PREVENTION USING NANOFOREST FILTERS ON DOWNHOLE TOOLS
#93Expandable reamers having nonlinearly expandable blades, and related methods
#94Drilling device
#95Hydraulic control of borehole tool deployment
#96Expandable reamer assemblies, bottom hole assemblies, and related methods
#97Downhole wireline cleaning tool
#98Expandable reamers and methods of using expandable reamers
#99Underreamer with adjustable cutter block expansion
#100Spline insert for a downhole tool
#101Ice auger assembly incorporating an ice reaming blade
#102Measuring fluid properties in a downhole tool
#103Extendable drilling tool
#104Dual string section mill
#105Apparatuses and methods for stabilizing downhole tools
#106Single-trip casing cutting and bridge plug setting
#107Near-Bit Borehole Opener Tool and Method of Reaming
#108Tool positioning and latching system
#109Diameter expansion drill bit
#110CUTTER BLOCK FOR A DOWNHOLE UNDERREAMER
#111HYDRAULICALLY ACTUATED TOOL WITH ELECTRICAL THROUGHBORE
#112Intelligent reamer for rotary/sliding drilling system and method
#113Reamer blades exhibiting at least one of enhanced gage cutting element backrakes and exposures and reamers so equipped
#114Downhole tool for increasing a wellbore diameter
#115Hole enlargement drilling device and methods for using same
#116DEVICE FOR ENLARGING CAISSON BASES
#117Expandable apparatus and related methods
#118Method and apparatus for reaming well bore surfaces nearer the center of drift
#119Extendable cutting tools for use in a wellbore
#120Circumferential and longitudinal cutter coverage in continuation of a first bit diameter to a second expandable reamer diameter
#121Method and apparatus for reaming well bore surfaces nearer the center of drift
#122Underreamer for increasing a wellbore diameter
#123Actuation assemblies, hydraulically actuated tools for use in subterranean boreholes including actuation assemblies and related methods
#124Components of drilling assemblies, drilling assemblies, and methods of stabilizing drilling assemblies in wellbores in subterranean formations
#125Expandable reamer assemblies, bottom-hole assemblies, and related methods
#126Drilling tool and method for earth drilling
#127Apparatus and method for installing ground anchoring systems
#128Drilling tool, apparatus and method for underreaming and simultaneously monitoring and controlling wellbore diameter
#129Adjustable diameter underreamer and methods of use
#130Underreamer for increasing a wellbore diameter
#131Deburring mill tool for wellbore cleaning
#132REAMER TOOL POSITIONABLE IN A WELLBORE
#133Downhole tool and control module
#134Mechanical caliper system for a logging while drilling (LWD) borehole caliper
#135Reamer with improved performance characteristics in hard and abrasive formations
#136Reamer with improved performance characteristics in hard and abrasive formations
#137Downhole reamer asymmetric cutting structures
#138Modular downhole tool
#139Large gauge concentric underreamer
#140Apparatus and method for installing ground anchoring systems
#141Utilization of expandable reamer blades in rigid earth-boring tool bodies
#142Electronically activated underreamer and calliper tool
#143Adjustable body supported cutter arms for underreamer
#144Drilling assemblies including expandable reamers and expandable stabilizers, and related methods
#145Cutting structures, tools for use in subterranean boreholes including cutting structures and related methods
#146Expandable reamers and methods of using expandable reamers
#147Expandable reamers having sliding and rotating expandable blades, and related methods
#148Reaming shoe for increased borehole clearance and method of use
#149DOWNHOLE TOOL
#150Downhole tool activation
#151Downhole cutting tool
#152Apparatuses and methods for stabilizing downhole tools
#153Extendable cutting tools for use in a wellbore
#154Optimized reaming system based upon weight on tool
#155Expandable reamer apparatus including stabilizers
#156Systems and methods for drilling boreholes with noncircular or variable cross-sections
#157Apparatus and method for installing ground anchoring systems
#158Dual string section mill
#159Actuator and method
#160Downhole reamer asymmetric cutting structures
#161Drilling apparatus
#162Drilling tool, apparatus and method for underreaming and simultaneously monitoring and controlling wellbore diameter
#163Wellbore tool with exchangeable blades
#164Expandable tool with at least one blade that locks in place through a wedging effect
#165Expandable tool for an earth boring system
#166Retention of cutters in bore hole tools
#167Expandable reamers for subterranean drilling and related methods
#168Expandable reamer apparatus and related methods
#169Hydraulic actuation of a downhole tool assembly
#170Apparatus for rotary mining
#171Electronically activated underreamer and calliper tool
#172Expansion and sensing tool
#173Downhole tool having a friction stirred surface region
#174Down-the-hole drill hammer having an extendable drill bit assembly
#175Article of manufacture having a sub-surface friction stir welded channel
#176DRILLING ASSEMBLY WITH UNDERREAMING BIT AND METHOD OF USE
#177Expandable earth boring apparatus using impregnated and matrix materials for enlarging a borehole
#178Earth-boring tools having expandable members and related methods
#179System and method for one-trip hole enlargement operations
#180Bore hole tool with magnetic blade retention
#181Apparatus for rotary mining
#182Stabilizer subs for use with expandable reamer apparatus, expandable reamer apparatus including stabilizer subs and related methods
#183Expandable reamer for subterranean boreholes and methods of use
#184Wired Smart Reamer
#185Pump in reverse outliner drilling system
#186Secondary cutting structure
#187Expandable reamer apparatus
#188Cutting device with multiple cutting structures
#189Downhole tool actuation having a seat with a fluid by-pass
#190Downhole tool actuation having a seat with a fluid by-pass
#191Ratchet mechanism in a fluid actuated device
#192Methods, systems, and tool assemblies for distributing weight between an earth-boring rotary drill bit and a reamer device
#193Hammer bit
#194Hole enlargement drilling device and methods for using same
#195Extendable cutting tools for use in a wellbore
#196Optimized reaming system based upon weight on tool
#197Reaming and stabilization tool and method for its use in a borehole
#198Retrieval of bottom hole assembly during casing while drilling operations
#199Activating device for a downhole tool
#200Methods, systems, and bottom hole assemblies including reamer with varying effective back rake
#201Stabilizer and reamer system having extensible blades and bearing pads and method of using same
#202Expandable earth boring apparatus using impregnated and matrix materials for enlarging a borehole
#203Apparatus for rotary mining
#204Full bore lined wellbores
#205Reaming and stabilization tool and method for its use in a borehole
#206Apparatus and methods of milling a restricted casing shoe
#207Expandable reamer apparatus for enlarging boreholes while drilling
#208Expandable reamer for subterranean boreholes and methods of use
#209Moveable blades and bearing pads
#210Expandable drill bit
#211Drill bit with protection member
#212Downhole tool having radially extendable members
#213Expandable reamer apparatus for enlarging boreholes while drilling and methods of use
#214Cutting device with multiple cutting structures
#215Downhole under-reamer tool
#216Enlarging well bores having tubing therein
#217Accessing subterranean resources by formation collapse
#218Expandable bit
#219Bit assembly for a hammering drill
#220Reaming and stabilization tool and method for its use in a borehole
#221Under reamer
#222Expandable reamer apparatus for enlarging subterranean boreholes and methods of use