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)
12/2012
12/20/2012WO2012173893A1 Multi-layered pdc cutters
12/20/2012WO2012173695A1 Modular anchoring sub for use with a cutting tool
12/20/2012WO2012171643A2 Two-centre rotary boring bit and method for deepening an existing well
12/20/2012US20120318584 Rotary drill and method for the production thereof
12/20/2012US20120318580 Earth-boring tools including retractable pads, cartridges including retractable pads for such tools, and related methods
12/20/2012CA2838732A1 Earth-boring tools including retractable pads, cartridges including retractable pads for such tools, and related methods
12/19/2012CN202611599U Diamond anchor rod drill bit
12/19/2012CN202611598U Cast-in-place pile hole-forming drill with small aperture
12/19/2012CN202611597U Novel diamond compact anchor drill
12/19/2012CN202611596U Stepped guide type coreless drill
12/19/2012CN202611595U Chisel with hexagonal square handle
12/19/2012CN202611594U Special drill head for windowing water-jet radial drilling sleeve pipe
12/19/2012CN202611593U Simple drill
12/19/2012CN202611592U Broaching drilling tool and rotary drilling machine thereof
12/19/2012CN202611587U Electric drill rotor with mechanical sealing device
12/19/2012CN102828696A Iron-based diamond-impregnated bit for drilling in hard slipping foundation
12/19/2012CN102828695A Reverse-circulation slag-removal reamer bit
12/19/2012CN102828694A Roller cone bit framework type lip bearing sealing structure
12/19/2012CN102828693A Roller bit of rolling and sliding floating sleeve bearing
12/19/2012CN101994483B Tower type large-diameter deep well planet primary-secondary drill
12/19/2012CN101812973B Efficient high-strength composite drill bit
12/18/2012CA2653544C Multi-sectional percussive drill bit assembly
12/13/2012WO2012170970A2 Element containing thermally stable polycrystalline diamond material and methods and assemblies for formation thereof
12/13/2012WO2012088115A3 Method and apparatus for drilling a zero-radius lateral
12/13/2012US20120312603 Optimization of drill bit cutting structure
12/13/2012US20120312602 Highly wear resistant composite rotary seals with wear layer at inner diameter and/or outer diameter embedded inside or between rubber layers
12/13/2012US20120312599 Cutting elements comprising sensors, earth-boring tools having such sensors, and associated methods
12/13/2012US20120312598 Apparatuses and methods for determining temperature data of a component of an earth-boring drilling tool
12/12/2012EP2532827A1 Downhole tool
12/12/2012EP2531691A2 Shock reduction tool for a downhole electronics package
12/12/2012EP2531690A2 Shaped cutting elements on drill bits and other earth-boring tools, and methods of forming same
12/12/2012CN202596584U Hand-held earth boring machine single-blade drill bit
12/12/2012CN202596583U Shock-resistant polycrystalline diamond compact anchor bit
12/12/2012CN202596582U Variable-diameter drill
12/12/2012CN202596581U Front-and-back-rotatable variable drill
12/12/2012CN202595603U Transverse clamp holder of cutter
12/12/2012CN102003146B Full-hydraulic reamer
12/12/2012CN101200998B Bonding structure and bonding method for cemented carbide element and diamond element, cutting tip and cutting element for drilling tool, and drilling tool
12/11/2012US8327958 Abrasive compact of superhard material and chromium and cutting element including same
12/11/2012US8327957 Downhole cutting tool having center beveled mill blade
12/11/2012US8327956 Multi-set PDC drill bit and method
12/11/2012US8327955 Non-parallel face polycrystalline diamond cutter and drilling tools so equipped
12/11/2012US8327954 Optimized reaming system based upon weight on tool
12/11/2012CA2694432C Methods of forming erosion-resistant composites, methods of using the same, and earth-boring tools utilizing the same in internal passageways
12/09/2012CA2776578A1 Optimization of drill bit cutting structure
12/06/2012WO2012166138A1 Core and drill bits with integrated optical analyzer
12/06/2012WO2012163838A1 Super-hard structure, tool element and method of making same
12/06/2012WO2012162746A1 A coring barrel
12/06/2012WO2012129217A3 Compact portable auger rack
12/06/2012WO2012112333A3 Drill bit seal and method of using same
12/06/2012WO2012109479A3 Infiltrated diamond wear resistant bodies and tools
12/06/2012WO2012064500A8 Casing spears and related systems and methods
12/06/2012CA2837656A1 Core and drill bits with integrated optical analyzer
12/05/2012CN202578683U Five-bit air-inlet and outlet drill-type coal-mining machine
12/05/2012CN202578522U Drill bit special for geophysical prospecting
12/05/2012CN202578521U Hot-pressing polymerization coarse particle diamond head
12/05/2012CN202578520U Wear-resisting polycrystalline diamond compact (PDC) drill capable of reaming efficiently
12/05/2012CN202578519U Drill bit device of deep-stratum mixing pile machine in dense sand stratum
12/05/2012CN202578518U Concave-convex tooth-shaped thin-wall diamond engineering drill bit
12/05/2012CN202578517U Air hammer drill bit capable of back redressing
12/05/2012CN202578516U Borehole enlarger
12/05/2012CN202578515U Eccentric spherical tooth of roller bit
12/05/2012CN202578514U Cone bit
12/05/2012CN202578513U Filling pile aiguille
12/05/2012CN202578512U Long spiral drill bit and door opening structure thereof
12/05/2012CN102808582A Filling pile position control dual-click drill bit and use method thereof
12/04/2012US8323372 Low coefficient of thermal expansion cermet compositions
12/04/2012US8323367 Superabrasive elements, methods of manufacturing, and drill bits including same
12/04/2012US8322467 Cutting element having stress reduced interface
12/04/2012US8322466 Drill bits and other downhole tools with hardfacing having tungsten carbide pellets and other hard materials and methods of making thereof
12/04/2012US8322465 Earth-boring bit parts including hybrid cemented carbides and methods of making the same
12/04/2012CA2624697C Underreaming and stabilisation tool to be used in a borehole and a method for using it
11/2012
11/29/2012WO2012162537A2 Jet arrangement on an expandable downhole tool
11/29/2012WO2012162517A2 Corrodible triggering elements for use with subterranean borehole tools having expandable members and related methods
11/29/2012WO2012162408A1 Mud motor assembly
11/29/2012WO2012161742A1 Self-renewing cutting surface, tool and method for making same using powder metallurgy and densification techniques
11/29/2012WO2012159172A1 Improvements to rc hammer bit lubrication
11/29/2012WO2012047847A8 Status indicators for use in earth-boring tools having expandable members and methods of making and using such status indicators and earth-boring tools
11/29/2012US20120298426 Multi-layer films for use in forming hardfacing, intermediate structures comprising such films, and methods of applying hardfacing
11/29/2012US20120298425 Heavy Duty Matrix Bit
11/29/2012US20120298424 Method and Apparatus for a True Geometry, Durable Rotating Drill Bit
11/29/2012US20120298423 Jet arrangement on an expandable downhole tool
11/29/2012US20120298422 Corrodible triggering elements for use with subterranean borehole tools having expandable members and related methods
11/29/2012US20120298355 Logging While Pulling
11/29/2012CA2837082A1 Mud motor assembly
11/28/2012EP2526249A2 A superhard insert and an earth boring tool comprising same
11/28/2012EP2525930A2 Pick tool and method for making same
11/28/2012CN202560226U Composite cutting tooth with alloy cylinders inserted in shoulder portion
11/28/2012CN202560225U Cutting tooth holder with clamping groove
11/28/2012CN202560107U Drill bit special for caving fully mechanized coal face
11/28/2012CN202560106U Anchor rod drill bit
11/28/2012CN202560105U Diamond ordered arrangement geological drill
11/28/2012CN202560104U Novel pile driver drilling tool based on Soil Mixing Wall (SMW) method
11/28/2012CN202560103U Lengthened PDC drill bit with centralizer
11/28/2012CN202560102U Line type drill bit
11/28/2012CN202560101U Hole digging drill
11/28/2012CN202560100U In-hole reamer
11/28/2012CN202560099U Drilling bit for drilling machine
11/28/2012CN202560093U A rotary digging drilling machine having soil-discharging push plate capable of being repositioned automatically
11/28/2012CN102803644A A drill bit and a drill tip
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