Patents
Sitemap › E21 - Earth or rock drilling; Mining › E21B - Earth or rock drilling; Obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells › E21B 10 - Drill bits
Patents for E21B 10 - Drill bits (19,464)
05/2010
05/19/2010CN201474616U Integrated steel PDC drill bit
05/19/2010CN201474615U Wedge diamond hard alloy composite slice
05/19/2010CN201474614U Pdc drill bit
05/19/2010CN201474613U PDC drill bit with back-reaming cutting teeth
05/19/2010CN201474612U Long screw toothed-club type drill for pile driver
05/19/2010CN201474611U Hole dilating drill
05/19/2010CN101166944B Drill rod
05/18/2010US7718581 Method using composition to reduce cutting head wear
05/18/2010US7717199 Cutting elements and bits incorporating the same
05/18/2010CA2615798C Pressure activated release member for an expandable drillbit
05/14/2010WO2010054407A1 Extendable cutting tools for use in a wellbore
05/14/2010WO2010054353A2 Bit based formation evaluation and drill bit and drill string analysis using an acoustic sensor
05/14/2010WO2010053905A2 Apparatus and method for controlling fluid flow in a rotary drill bit
05/14/2010WO2010053736A2 High pressure sintering with carbon additives
05/14/2010WO2010011543A3 Steel tooth bit with scooped teeth profile
05/14/2010WO2009152194A4 Composite metal, cemented carbide bit construction
05/14/2010WO2009149169A4 Passive and active up-drill features on fixed cutter earth-boring tools and related methods
05/14/2010CA2844909A1 Extendable cutting tools for use in a wellbore
05/14/2010CA2742767A1 Extendable cutting tools for use in a wellbore
05/14/2010CA2742479A1 Bit based formation evaluation and drill bit and drill string analysis using an acoustic sensor
05/13/2010US20100116557 Matrix bit bodies with multiple matrix materials
05/13/2010US20100116556 Pilot reamer with composite framework
05/13/2010US20100115855 Thermally Stable Diamond Bonded Materials and Compacts
05/12/2010EP2183459A2 Chamfered edge gage cutters, drill bits so equipped, and methods of cutter manufacture
05/12/2010CN201460748U Anti-clogging cover for oil bit port
05/12/2010CN201460747U Water drill bit capable of easily cleaning
05/12/2010CN201460746U Diamond film impregnated bit
05/12/2010CN201460745U polycrystal diamond compact bit for Ordos Basin loess layer
05/12/2010CN201460744U Spherical-wheel full-face geological drill bit
05/12/2010CN201460743U Hobbing cutter with hard alloy gear provided with alien gear head
05/12/2010CN201460742U Hard alloy deep hole drill
05/12/2010CN201460741U Variable PDC drill bit
05/12/2010CN201460740U PDC drill bit with gauge slice
05/12/2010CN201460739U Three-wing articulated concrete deep reamer
05/12/2010CN201460738U Tower type large diameter deep well planetary primary-secondary drill
05/12/2010CN201460737U Drilling tool for preventing hole collapse
05/12/2010CN201460736U Grouting and stirring bottom expanding drill bit of drilling and grouting pile
05/12/2010CN201460734U High-pressure water jet coal seam drilling and reaming system
05/12/2010CN101705791A Triangular polycrystalline diamond bit for geologic exploration and manufacturing method thereof
05/12/2010CN101705790A Surface-set reamer used in geological exploration and manufacturing method thereof
05/12/2010CN101704101A Formula and technique for manufacturing geophysical prospecting bit by powder sintering
05/12/2010CN101105115B Waterpower pulse cavitation jet well drilling device and drill bit
05/11/2010US7712554 Percussive drill bit provided with an improved chuck assembly
05/11/2010US7712553 Method and apparatus for selectively leaching portions of PDC cutters used in drill bits
05/11/2010US7712549 Drilling tool
05/11/2010CA2499725C One-step directional coring or drilling system
05/11/2010CA2463953C System for lining a section of a wellbore
05/06/2010WO2010049677A1 Anti-whirl drill bits, wellsite systems, and methods of using the same
05/06/2010WO2010049674A1 Self-stabilized and anti-whirl drill bits and bottom-hole assemblies and systems for using the same
05/06/2010WO2010027840A3 Cutter pocket inserts
05/06/2010WO2010024999A3 Cutting tool with water injection to the cutting bit shank
05/06/2010WO2009149158A4 Methods of attaching a shank to a body of an earth boring tool including a load bearing joint and tools formed by such methods
05/06/2010WO2009012432A3 Rotationally indexable cutting elements and drill bits therefor
05/06/2010US20100108403 Surface coatings on cutting elements
05/06/2010US20100108402 Downhole cutting tool and method of making
05/06/2010US20100108401 Resilient Bit Systems and Methods
05/06/2010US20100108400 Hard metal plate for rock drill and rock drill
05/06/2010US20100108399 Carburized monotungsten and ditungsten carbide eutectic particles, materials and earth-boring tools including such particles, and methods of forming such particles, materials, and tools
05/06/2010US20100108398 Percussion Rock Drilling Bit with More Efficient Flushing
05/06/2010US20100108397 Earth-boring tools having threads for affixing a body and shank together and methods of manufacture and use of same
05/06/2010US20100108396 Drilling Tool
05/06/2010US20100108395 Drill bit assembly for fluid-operated percussion drill tools
05/06/2010US20100108394 Downhole Tool
05/06/2010US20100108391 Drill bit assembly and method of performing an operation in a wellbore
05/06/2010US20100108390 Apparatus and method for controlling fluid flow in a rotary drill bit
05/06/2010CA2741618A1 Anti-whirl drill bits, wellsite systems, and methods of using the same
05/05/2010EP2181239A2 Nozzles including secondary passages, drill assemblies including same and associated methods
05/05/2010EP2181238A1 Earth-boring tools having pockets for receiving cutting elements and methods for forming earth-boring tools including such pockets
05/05/2010EP1859121B1 Bit leg and cone hardfacing for earth-boring bit
05/05/2010CN201448058U Bottom blowout stepped PDC coal fetching drill bit
05/05/2010CN201448057U Natural diamond surface-set anchor bit
05/05/2010CN201448056U Bore bit
05/05/2010CN201448055U PDC expanding bit
05/05/2010CN201448054U Ladder type diamond cast rib coring bit
05/05/2010CN1965145B Enlarging and stabilising tool for a borehole
05/05/2010CN1734023B Cutting device and method for producing a cut hole
05/05/2010CN101701509A Dedicated drillbit of rotary drill used for drilling rocks
05/05/2010CN101701508A Self-sharpening cross drill for geological exploration
05/05/2010CN101701507A Underreamer with extrusion and wall-expansion functions
05/04/2010US7708090 Excluder ring for earth-boring bit
05/04/2010US7708087 Countersink roof bit drill and method for using the same
05/04/2010US7708076 Method of using a drill in sand control liner
04/2010
04/29/2010WO2010048120A2 Method and apparatus for automated application of hardfacing material to drill bits
04/29/2010WO2010048116A2 Self sharpening steel tooth cutting structure
04/29/2010WO2010047810A1 Combination coring bit and drill bit using fixed cutter pdc cutters
04/29/2010WO2010047721A1 Seal assembly for a rotary earth bit
04/29/2010WO2010046863A1 Insert for an attack tool, method for making same and tools incorporating same
04/29/2010WO2010046860A1 A polycrystalline diamond composite compact element, tools incorporating same and method for making same
04/29/2010WO2010028244A3 Apparatus and system to allow tool passage ahead of a bit
04/29/2010WO2010025313A3 Drilling out casing bits with other casing bits
04/29/2010WO2010011542A3 Dynamically stable hybrid drill bit
04/29/2010WO2009156739A3 Reaming tool
04/29/2010WO2009135119A4 Modular hybrid drill bit
04/29/2010WO2009132179A4 Methods, systems, and bottom hole assemblies including reamer with varying effective back rake
04/29/2010US20100101870 Combination coring bit and drill bit using fixed cutter PDC cutters
04/29/2010US20100101869 Diamond bit steel body cutter pocket protection
04/29/2010US20100101868 Bonding of cutters in diamond drill bits
04/29/2010US20100101867 Self-stabilized and anti-whirl drill bits and bottom-hole assemblies and systems for using the same
04/29/2010US20100101866 Drill bits and other downhole tools with hardfacing having tungsten carbide pellets and other hard materials
04/29/2010US20100101864 Anti-whirl drill bits, wellsite systems, and methods of using the same
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