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)
03/2010
03/04/2010WO2010005891A3 Infiltrated, machined carbide drill bit body
03/04/2010WO2009140516A3 Reamer with polycrystalline diamond compact inserts
03/04/2010WO2009135116A3 Stabilizer and reamer system having extensible blades and bearing pads and methods of using same
03/04/2010WO2009129492A3 Matrix powder for matrix body fixed cutter bits
03/04/2010US20100051352 Cutter Pocket Inserts
03/04/2010US20100051351 Intermetallic bonded diamond (ibd) cutting elements
03/04/2010US20100051350 Drilling out casing bits with other casing bits
03/04/2010US20100051349 Force balanced asymmetric drilling reamer
03/04/2010CA2734977A1 Drilling out casing bits with other casing bits
03/03/2010CN201416393Y High strength matrix diamond drill for oil drilling
03/03/2010CN201416392Y Multiple spiral cutter type drill of long screw pile machine
03/03/2010CN101663459A Elastomer material for high temperature roller cone bits
03/02/2010US7669674 Degradation assembly
03/02/2010US7669673 Auger having interchangeable cutting heads and method of using the same
03/02/2010CA2356130C Method and apparatus for drilling and lining a wellbore
02/2010
02/25/2010WO2010022325A2 Method of making an earth-boring metal matrix rotary drill bit
02/25/2010WO2010022322A2 Earth-boring metal matrix rotary drill bit
02/25/2010WO2010022040A2 Drill bit with instantaneous rate of penetration senor
02/25/2010WO2010021802A2 Earth-boring bits and other parts including cemented carbide
02/25/2010WO2010021801A2 Earth-boring bit parts including hybrid cemented carbides and methods of making the same
02/25/2010WO2009152197A3 Methods for sintering bodies of earth boring tools and structures formed during the same
02/25/2010WO2009149169A3 Passive and active up-drill features on fixed cutter earth-boring tools and related methods
02/25/2010WO2009148784A3 Wear indicators for expandable earth boring apparatus
02/25/2010WO2009140123A3 Matrix bit bodies with multiple matrix materials
02/25/2010WO2009135119A3 Modular hybrid drill bit
02/25/2010US20100044115 Earth-boring bit parts including hybrid cemented carbides and methods of making the same
02/25/2010US20100044114 Earth-boring bits and other parts including cemented carbide
02/25/2010CA2732518A1 Earth-boring bits and other parts including cemented carbide
02/25/2010CA2732517A1 Earth-boring bit parts including hybrid cemented carbides and methods of making the same
02/24/2010EP2156003A2 Method of repairing diamond rock bit
02/24/2010EP2156002A1 Hybrid drill bit and method of drilling
02/24/2010CN201412068Y PDC drill bit suitable for small-hole directional well
02/24/2010CN201411686Y Long auger-drill head
02/24/2010CN101657602A Drilling bit having a cutting element. co-sintered with a cone structure
02/24/2010CN101657601A Expandable reamers for earth boring applications
02/24/2010CN101657600A Hardfacing around ball loading hole for earth-boring bit
02/23/2010US7666244 Hardfacing milled-tooth drill bits using super dense carbide pellets
02/23/2010US7665552 Superhard insert with an interface
02/23/2010US7665550 Underreamer and method of use
02/23/2010US7665549 Entrainment fluid channeling device for a down-hole drill string
02/23/2010US7665548 Secondary retainer for a downhole hammer bit
02/23/2010US7665547 Drill bit reservoir with controllable relief pressure
02/18/2010WO2010019834A2 Bit cone with hardfaced nose
02/18/2010WO2010019092A1 Core drill bit
02/18/2010US20100038148 Intermetallic Aluminide Polycrystalline Diamond Compact (PDC) Cutting Elements
02/18/2010US20100038147 Tough carbide bodies using encapsulated carbides
02/18/2010US20100038146 Bit Cone With Hardfaced Nose
02/18/2010US20100038145 Hardfacing compositions for earth boring tools
02/18/2010US20100038144 Roller bearing seal companion ring having textured surface for holding lubricant and small particles
02/18/2010CA2733786A1 Core drill bit
02/18/2010CA2733255A1 Bit cone with hardfaced nose
02/18/2010CA2675194A1 Rotary drill bit
02/17/2010CN201406989Y Columnar cutting tool bit
02/17/2010CN201406988Y Novel geophysical scraping drill bit used for soft-hard alternated ground layers
02/17/2010CN101652533A Fiber-containing diamond-impregnated cutting tools
02/17/2010CN101652532A Core drill bit with extended matrix height
02/17/2010CN100590291C Gauge structure of single cone bit
02/16/2010USRE41119 Borehole opener
02/16/2010US7661491 High-strength, high-toughness matrix bit bodies
02/16/2010US7661490 Stabilizing system and methods for a drill bit
02/16/2010US7661489 Roller reamer
02/16/2010CA2568933C Method and apparatus and program storage device adapted for automatic drill bit selection based on earth properties
02/11/2010WO2010017460A1 Earth boring cutter employing helical teeth
02/11/2010US20100032216 Earth boring cutter employing helical teeth
02/11/2010US20100032215 Tri-cone bits for horizontal and hard formation drilling applications
02/11/2010CA2733563A1 Earth boring cutter employing helical teeth
02/10/2010CN201401131Y PDC drill bit equipped with longitudinal cutting teeth
02/10/2010CN101644138A Sealing device suitable for throat of gas drilling coring bit
02/09/2010US7658244 Device for advancing drillings in the ground
02/09/2010US7658242 Hole coring system with lever arm
02/09/2010US7658241 Underreaming and stabilizing tool and method for its use
02/04/2010WO2010014926A2 Universal joint assembly
02/04/2010WO2010014725A2 Earth boring drill bits with using opposed kerfing for cutters
02/04/2010WO2010014327A2 Cutting bit for mining and excavating tools
02/04/2010WO2009146096A4 Rotary drill bits and drilling tools having protective structures on longitudinally trailing surfaces
02/04/2010US20100025121 Earth boring drill bits with using opposed kerfing for cutters
02/04/2010US20100025119 Hybrid drill bit and method of using tsp or mosaic cutters on a hybrid bit
02/04/2010US20100025114 PCD Percussion Drill Bit
02/04/2010CA2732327A1 Universal joint assembly
02/03/2010CN201396073Y Compensatory boring bit
02/03/2010CN201396072Y Impregnated PDC drill bit
02/03/2010CN201396071Y High grinding resistant diamond bit
02/03/2010CN201396067Y Down-hole drilling tool for increasing mechanical drilling rate of slim holes
02/03/2010CN101638976A Casting type long spiral drilling head
02/02/2010US7654346 Steel tooth drill bit with improved tooth breakage resistance
02/02/2010US7654342 Underreaming and stabilization tool for use in a borehole and method for its use
01/2010
01/30/2010CA2674716A1 Tri-cone bits for horizontal and hard formation drilling applications
01/28/2010WO2010011542A2 Dynamically stable hybrid drill bit
01/28/2010WO2010011500A1 Pdc bit having split blades
01/28/2010US20100018780 Pdc bit having split blades
01/28/2010US20100018779 Placement of cutting elements on secondary cutting structures of drilling tool assemblies
01/28/2010US20100018778 Seal comprising elastomeric composition with nanoparticles
01/28/2010US20100018777 Dynamically stable hybrid drill bit
01/28/2010US20100018776 Cutting bit for mining and excavating tools
01/28/2010US20100018774 Excavator apparatus for underground excavation
01/28/2010US20100018771 Rotary Drill Bit
01/28/2010CA2730944A1 Dynamically stable hybrid drill bit
01/27/2010EP2147903A2 Method for distributing granular components in polycrystalline diamond composites
01/27/2010EP2147183A2 Fixed cutter bit and blade for a fixed cutter bit and methods for making the same
01/27/2010CN201391331Y Integral in-hole drilling tool for drilling slotting punched hole of coal seam
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