135261 ⎘
Drill bits characterised by conduits or nozzles for drilling fluids the bit being a rotary drag type bit with blades
HYDROJETS ROTARY DRILL BIT WITH VOLUMETRIC COOLING
#2A DRILL HEAD FOR USE WITH MICROTUNNELING APPARATUS
#3HYDROJETS ROTARY DRILL BIT
#4TWO-PART DRILLING AND RUNNING TOOL
#5CENTRALLY LOCATED DRILL BIT CLEANING ELEMENT
#6SUBTERRANEAN DRILL BITS HAVING SHANK BYPATHS
#7DEVICES, SYSTEMS, AND METHODS FOR A CUTTING ELEMENT
#8DRILL BITS AND OTHER DOWNHOLE DRILLING TOOLS WITH NON-CYLINDRICAL CUTTER POCKETS
#9DRILL BIT
#10GROUND DRILLING DEVICE
#11Two-part drilling and running tool
#12Drill head and method for producing a vertical borehole in the ground
#13Earth-boring tools, cutting elements, and associated structures, apparatus, and methods
#14Drill bits with variable cutter alignment
#15System and Method for A Drill Bit
#16Concealed nozzle drill bit
#17Drill bit with joint function of induced unloading and abrasive jet and drilling method thereof
#18DRILL BIT WITH AUXILIARY CHANNEL OPENINGS
#19Techniques for forming instrumented cutting elements and affixing the instrumented cutting elements to earth-boring tools and related apparatuses and methods
#20Fixed cutter drill bits including nozzles with end and side exits
#21HYBRID PDC BIT
#22DRILL BIT WITH CUTTING GAUGE PAD
#23Wellbore drill bit
#24Replaceable nozzle for drilling bit
#25No blade bit
#26Rotary steerable drill string
#27Drill bit valve
#28Downhole tools with improved arrangements of cutters
#29Downhole tool with fixed cutters for removing rock
#30Fixed-cutter matrix bits with repairable gauge pads
#31BI-MILL FOR MILLING AN OPENING THROUGH A WELLBORE CASING AND IN A PREPLANNED LATERAL DRILLING PATH IN DEPARTURE FROM THE WELLBORE AXIS
#32Fixed cutter completions bit
#33Well drilling bit and well drilling method using the same
#34Drill bit nozzle and drill bit
#35BIDIRECTIONAL ECCENTRIC STABILIZER
#36Methods of removing shoulder powder from fixed cutter bits
#37Customized drilling tools
#38Earth boring tools with pockets having cutting elements disposed therein trailing rotationally leading faces of blades and related methods
#39Well bit assembly
#40Wellbore drill bit
#41Earth-boring tools having pockets trailing rotationally leading faces of blades and having cutting elements disposed therein and related methods
#42Cutting elements with geometries to better maintain aggressiveness and related earth-boring tools and methods
#43Drill bit
#44Cutting element assemblies and downhole tools comprising rotatable and removable cutting elements and related methods
#45Downhole tool with fixed cutters for removing rock
#46Apparatus and method for drilling generally horizontal underground boreholes
#47CUTTING ELEMENT ASSEMBLIES COMPRISING ROTATABLE CUTTING ELEMENTS INSERTABLE FROM THE BACK OF A BLADE
#48Fixed cutter drill bits including nozzles with end and side exits
#49Weight-on-bit self-adjusting drill bit
#50Earth-boring bit
#51Dual Purpose Radial Drilling Tool String for Cutting Casing and Rock in a Single Trip
#52Magnetic positioning of reinforcing particles when forming metal matrix composites
#53Impregnated drill bit including a planar blade profile along drill bit face
#54Drill bit with self-directing nozzle and method of using same
#55METHOD OF FORMING A HOLE IN A HARD GROUND STRUCTURE
#56Down-the-hole drilling device
#57Rotary claw drill bit
#58Bit for drilling with casing or liner string and manufacture thereof
#59Customized drilling tools
#60Measuring current from an electrode using a non-linear element
#61Drill bits having flushing
#62Fixed cutter drill bit having core receptacle with concave core cutter
#63Methods of forming earth-boring tools including sinterbonded components
#64Direct pullback devices and method of horizontal drilling
#65CROSS HOLE DEBURRING TOOL, CROSS HOLE DEBURRING METHOD, AND ROTARY VALVE MACHINED BY USING THE SAME
#66Mechanical-interlocking reinforcing particles for use in metal matrix composite tools
#67Drill bit
#68Catalyst material extraction from polycrystalline diamond tables
#69HOLE OPENER AND METHOD FOR DRILLING
#70Methods of removing shoulder powder from fixed cutter bits
#71Apparatus and Method of Manufacture for a Mechanical Radial Drilling Cutting Head
#72Mesoscale reinforcement of metal matrix composites
#73Bit incorporating ductile inserts
#74Fixed cutter drill bit with flow guide
#75DRILL BIT MASK HAVING SUB-MILLIMETER SIZE APERTURES FOR REENTRANT CAVITATION JET DRILLING
#76Insulation enclosure with compliant independent members
#77Precipitation hardened matrix drill bit
#78Fiber-reinforced tools for downhole use
#79Expandable diameter drill bit
#80FLOW THROUGH GAUGE FOR DRILL BIT
#81EXTENDED OR RAISED NOZZLE FOR PDC BITS
#82Apparatus and method for drilling generally horizontal underground boreholes
#83DRILL BITS HAVING FLUSHING AND SYSTEMS FOR USING SAME
#84Curved nozzle for drill bits
#85Earth-boring tools with extended cutting features and related methods
#86Drill head
#87Hole opener and method for drilling
#88Drilling tool
#89Drill bit with fixed cutter elements
#90Drill bit
#91Rotational drill bits and drilling apparatuses including the same
#92System and method for detecting drilling events using an opto-analytical device
#93Drill bit
#94Direct pullback devices and method of horizontal drilling
#95System and method for analyzing downhole drilling parameters using an opto-analytical device
#96Drill bits having flushing and systems for using same
#97Drill bit with a flow interrupter
#98Earth-boring tools and methods of forming earth-boring tools
#99Earth-boring tools and methods of forming such earth-boring tools
#100Impregnated rotary bit with high density monoblock center structure
#101Method for reducing intermetallic compounds in matrix bit bondline
#102Machined high angle nozzle sockets for steel body bits
#103BLADE FLOW PDC BITS
#104FLOW THROUGH GAUGE FOR DRILL BIT
#105Rotational drill bits and drilling apparatuses including the same
#106PDC drill bit with flute design for better bit cleaning
#107Feature to eliminate shale packing/shale evacuation channel
#108Earth removal member with features for facilitating drill-through
#109Drill bit
#110Superabrasive-impregnated earth-boring tools with extended features and aggressive compositions, and related methods
#111System and method of fracturing while drilling
#112Rotational drill bits and drilling apparatuses including the same
#113Earth-boring tools and methods of forming such earth-boring tools
#114Timed steering nozzle on a downhole drill bit
#115Timed Steering Nozzle on a Downhole Drill Bit
#116Methods of using a particle impact drilling system for removing near-borehole damage, milling objects in a wellbore, under reaming, coring perforating, assisting annular flow, and associated methods
#117Methods of using a particle impact drilling system for removing near-borehole damage, milling objects in a wellbore, under reaming, coring, perforating, assisting annular flow, and associated methods
#118Earth removal member with features for facilitating drill-through
#119High efficiency hydraulic drill bit
#120Methods of using a particle impact drilling system for removing near-borehole damage, milling objects in a wellbore, under reaming, coring, perforating, assisting annular flow, and associated methods
#121Rotational drill bits and drilling apparatuses including the same
#122Rotary Drill Bits with Optimized Fluid Flow Characteristics
#123Earth-boring tools and methods of forming earth-boring tools
#124PDC drill bit with flute design for better bit cleaning
#125Earth-boring tools and components thereof including blockage-resistant internal fluid passageways, and methods of forming such tools and components
#126Earth removal member with features for facilitating drill-through
#127Drill bit with a flow interrupter
#128Impactor excavation system having a drill bit discharging in a cross-over pattern
#129Rotary Drill Bit
#130METHOD AND APPARATUS TO THWART BIT BALLING OF DRILL BITS
#131Impact excavation system and method with injection system
#132Earth boring bit
#133Drill bit for earth boring
#134Matrix Drill Bit with Dual Surface Compositions and Methods of Manufacture
#135Cutting removal system for PDC drill bits
#136SELF-STABILIZED AND ANTI-WHIRL DRILL BITS AND BOTTOM-HOLE ASSEMBLIES AND SYSTEMS FOR USING THE SAME
#137ANTI-WHIRL DRILL BITS, WELLSITE SYSTEMS, AND METHODS OF USING THE SAME
#138Earth-boring tools including sinterbonded components and partially formed tools configured to be sinterbonded
#139DEEP HOLE DRILLING MACHINE
#140Impregnated drill bit
#141Methods of using a particle impact drilling system for removing near-borehole damage, milling objects in a wellbore, under reaming, coring, perforating, assisting annular flow, and associated methods
#142Shot blocking using drilling mud
#143Impact excavation system and method with particle separation
#144Impact excavation system and method with injection system
#145Impact Excavation System And Method With Particle Separation
#146IMPACT EXCAVATION SYSTEM AND METHOD WITH SUSPENSION FLOW CONTROL
#147Impregnated bit with changeable hydraulic nozzles
#148Drill bit with a fixed cutting structure
#149Drill bit nozzle
#150Impact excavation system and method with suspension flow control
#151Downhole pressure pulse activated by jack element
#152DRILL BIT
#153Jet arrangement for a downhole drill bit
#154Drill bit
#155Impact excavation system and method with injection system
#156Impact excavation system and method with two-stage inductor
#157Impact excavation system and method with particle trap
#158Flow allocation in drill bits
#159Drill bit
#160Impact excavation system and method with particle separation
#161Impact excavation system and method with suspension flow control
#162Impact excavation system and method with improved nozzle
#163Oilfield drill bit jet nozzle with slit connecting two orifices
#164Hydrojets rotary drill bit
#165Earth-boring bit
#166Wellbore drill bit nozzle
#167Drill bit with a flow interrupter