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)
09/2012
09/05/2012CN202417312U Supercharging core-extraction drill bit for coal mine
09/05/2012CN102656334A Highly wear resistant diamond insert with improved transition structure
09/05/2012CN102656128A Polycrystalline diamond composite compact
09/05/2012CN102654032A Side tooth gauge-protection reamer with skidding thrust bearing
09/05/2012CN102654031A Side tooth gauge-protection reamer with skidding bearing
09/05/2012CN102654030A Binder dent gauge protection underreamer with anti-thrust steel ball
09/05/2012CN102654029A Binder dent gauge protection underreamer with abrasion proof anti-thrust steel ball
09/05/2012CN102654028A Edge tooth diameter-preserving reamer with monomer thrust steel ball
09/05/2012CN102654027A Binder dent gauge protection underreamer with floating pad
09/05/2012CN102654026A Binder dent gauge protection underreamer with elastic floating sleeve
09/05/2012CN102654025A Wear-resistance side tooth gauge-protection reamer
09/05/2012CN102654022A Multi-process pile hole construction method
09/05/2012CN101963043B Positive pressure jet spiral sampling drill
09/05/2012CN101845938B Three-wing bit
09/05/2012CN101644136B Combination of reaming stabilizer and bottom drilling device
09/05/2012CN101614108B Roller cone drill bits with optimized bearing structures
09/05/2012CN101343983B Barrel type drilling tool
09/05/2012CN101037928B Roller cone drill bit with debris flow paths through associated support arms
09/04/2012US8256539 Steerable ground piercing tools
09/04/2012US8256536 Backreamer for a tunneling apparatus
08/2012
08/30/2012WO2012116204A2 Integrated reaming and measurement system and related methods of use
08/30/2012WO2012116153A1 High power laser-mechanical drilling bit and methods of use
08/30/2012WO2012115837A2 Methods of forming polycrystalline compacts, cutting elements and earth-boring tools
08/30/2012WO2012115287A1 Reaming shell for mining
08/30/2012WO2012113024A1 Fluid drilling head nozzle design
08/30/2012WO2012113023A1 Fluid drilling head with sliding gauging ring
08/30/2012CA2827989A1 Fluid drilling head nozzle design
08/30/2012CA2827988A1 Fluid drilling head with sliding gauging ring
08/30/2012CA2827610A1 Methods of forming polycrystalline compacts, cutting elements and earth-boring tools
08/29/2012EP2491221A2 Cutting structures for casing component drillout and earth-boring drill bits including same
08/29/2012EP2491220A2 Wellbore completion
08/29/2012CN202401976U Long-service-life drill tool provided with coatings
08/29/2012CN202401975U Diamond composite sheet with novel structure
08/29/2012CN202401974U Novel metal-sintering-body PDC (polycrystalline diamond compact) bit with five cutter blades
08/29/2012CN202401973U Novel seven-blade matrix PDC (Polycrystalline Diamond Compact) drill bit
08/29/2012CN202401972U Five-blade steel body polycrystalline diamond compact bit (PDC) drill bit
08/29/2012CN202401971U Six-blade matrix PDC (polycrystalline diamond compact) bit
08/29/2012CN202401970U PDC (polycrystalline diamond composite) drill bit with function of uplift resistance breaking
08/29/2012CN202401969U Wear-resistant safety drilling tool
08/29/2012CN102650193A Combined drill
08/29/2012CN101956530B Underground horizontal bore drilling tool used for petroleum drilling
08/29/2012CN101906938B Drill bit
08/29/2012CN101852065B Diamond compact substrate
08/29/2012CN101793125B Horizontal directional drilling pipeline rock strata crossing composite reaming construction method
08/29/2012CN101680271B Hammer bit
08/29/2012CN101624899B Drill of high pressure water jet long screw pile driver
08/28/2012US8251161 Device for actuating a bottom tool
08/28/2012US8251144 Flow diverter
08/28/2012CA2537485C Rotary roller reamer
08/28/2012CA2525793C Drill bit and system for drilling a borehole
08/28/2012CA2489187C Thermally-stable polycrystalline diamond materials and compacts
08/23/2012WO2012112684A2 Polycrystalline compacts including metallic alloy compositions in interstitial spaces between grains of hard material, cutting elements and earth-boring tools including such polycrystalline compacts, and related methods
08/23/2012WO2012112220A2 Cutting elements having a pre-formed fracture plane for use in cutting tools
08/23/2012WO2012112016A2 Boring machine
08/23/2012WO2012021605A8 Cutter rings and method of manufacture
08/23/2012US20120211284 Methods of forming polycrystalline compacts, cutting elements and earth-boring tools
08/23/2012US20120211283 Polycrystalline compacts including metallic alloy compositions in interstitial spaces between grains of hard material, cutting elements and earth boring tools including such polycrystalline compacts, and related methods
08/23/2012US20120211282 Rock bit and cutter teeth geometries
08/23/2012US20120211280 Integrated reaming and measurement system and related methods of use
08/23/2012CA2827458A1 Boring machine
08/23/2012CA2827207A1 Drill bit seal and method of using same
08/23/2012CA2827109A1 Polycrystalline compacts including metallic alloy compositions in interstitial spaces between grains of hard material, cutting elements and earth-boring tools including such polycrystalline compacts, and related methods
08/22/2012EP2488719A2 Polycrystalline compacts including nanoparticulate inclusions, cutting elements and earth-boring tools including such compacts, and methods of forming such compacts
08/22/2012EP2035646B1 Multi-sectional percussive drill bit assembly
08/22/2012CN202391348U Split-type drilling tool for fragile rock core
08/22/2012CN202391347U Prospecting drill bit for petroleum geology
08/22/2012CN102648328A Polycrystalline diamond material with high toughness and high wear resistance
08/22/2012CN102644440A Reamer
08/22/2012CN102644439A Rotating drilling rig enabling soil-discharging push plate to be automatically reset and construction method thereof
08/22/2012CN102644274A Pile-forming construction method for penetrating through existing structure by fender post
08/21/2012US8245797 Cutting structures for casing component drillout and earth-boring drill bits including same
08/21/2012CA2509535C Percussive tool with flushing head
08/16/2012WO2012109518A1 Cutting structures for fixed cutter drill bit and other downhole cutting tools
08/16/2012WO2012109517A1 Kerfing hybrid drill bit and other downhole cutting tools
08/16/2012WO2012109479A2 Infiltrated diamond wear resistant bodies and tools
08/16/2012WO2012109346A2 Tools for use in subterranean boreholes having expandable members and related methods
08/16/2012WO2012109234A2 System and method for leg retention on hybrid bits
08/16/2012WO2012109205A2 Nano-coatings for articles
08/16/2012WO2012109090A2 Helical drilling apparatus, systems, and methods
08/16/2012WO2012088212A3 Protective system and chemical agents for leaching polycrystalline diamond elements and for recovery of leached materials
08/16/2012US20120205163 Kerfing hybrid drill bit and other downhole cutting tools
08/16/2012US20120205162 Downhole tools having features for reducing balling, methods of forming such tools, and methods of repairing such tools
08/16/2012US20120205161 Auger
08/16/2012US20120205160 System and method for leg retention on hybrid bits
08/16/2012US20120205157 Tools for use in subterranean boreholes having expandable members and related methods
08/16/2012DE112010002588T5 Erosionsbeständige unterirdische Bohrmeißel mit infiltrierten Metallmatrixkörpern Erosion resistant subterranean drill bit having infiltrated metal matrix bodies
08/16/2012CA2827116A1 Cutting structures for fixed cutter drill bit and other downhole cutting tools
08/16/2012CA2826939A1 Kerfing hybrid drill bit and other downhole cutting tools
08/16/2012CA2826782A1 Helical drilling apparatus, systems, and methods
08/16/2012CA2826758A1 Infiltrated diamond wear resistant bodies and tools
08/16/2012CA2826688A1 Tools for use in subterranean boreholes having expandable members and related methods
08/16/2012CA2826685A1 System and method for leg retention on hybrid bits
08/16/2012CA2826259A1 Nano-coatings for articles
08/15/2012EP2486221A1 Hard metal insert for a drill bit for percussion drilling and method for grinding a hard metal insert
08/15/2012EP2486220A1 Cutting tool inserts
08/15/2012EP2486219A2 Hole opener with hybrid reaming section
08/15/2012EP2486218A2 Hole opener with hybrid reaming section
08/15/2012EP2486217A2 Hole opener with hybrid reaming section
08/15/2012EP2486216A2 Hole opener with hybrid reaming section
08/15/2012EP2153012B1 Steel tooth drill bit with improved tooth breakage resistance
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