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)
05/2012
05/18/2012CA2817070A1 Casing spears and related systems and methods
05/17/2012US20120118644 Method And Device For Drilling Shafts In Ground Layers Consisting Of Rock, Clay And/Or Related Materials
05/17/2012US20120118640 Underground drilling apparatus
05/16/2012EP2453103A2 Anchor component and method for manufacturing same
05/16/2012EP2452037A2 Cutting element for a drill bit used in drilling subterranean formations
05/16/2012EP2452036A2 Cutting element and method of forming thereof
05/16/2012EP2452035A2 Backup cutting elements on non-concentric reaming tools
05/16/2012EP2297425B1 Polycrystalline diamond compact drill bit blade design and nozzle placement
05/16/2012CN202220561U Diamond compact bit
05/16/2012CN202220560U Steel type diamond-impregnated bit
05/16/2012CN202220559U Drill bit and long spiral drilling machine using same
05/16/2012CN202220558U Drill bit with semicircular patch teeth
05/16/2012CN202220557U Impact extrusion overburden drilling system
05/16/2012CN202220556U Drill bit for particle impact drilling
05/16/2012CN202220555U Wheel type drill
05/16/2012CN102459802A Cutting elements, methods for manufacturing such cutting elements, and tools incorporating such cutting elements
05/16/2012CN102459801A 潜孔工具腿的保持方法和设备 Downhole tools legs holding method and apparatus
05/16/2012CN102454368A Telescopic drill rod and cast-in-situ cylindrical pile rotary drilling machine with same
05/16/2012CN102454366A Drill bit
05/16/2012CN102454365A Drilling bit for forming branches of branch pile
05/15/2012US8177001 Earth-boring tools including abrasive cutting structures and related methods
05/15/2012US8177000 Modular system for a back reamer and method
05/15/2012US8176998 Method and device for core drilling
05/15/2012CA2668192C Earth-boring rotary drill bits including bit bodies having boron carbide particles in aluminum or aluminum-based alloy matrix materials, and methods for forming such bits
05/15/2012CA2590439C Drill bit with asymmetric gage pad configuration
05/15/2012CA2549061C Polycrystalline diamond abrasive elements
05/15/2012CA2472332C Method of making a tool component
05/10/2012WO2012061563A1 Cutting element structure with sloped superabrasive layer
05/10/2012WO2012060937A1 System and method for adjusting roller cone profile on hybrid bit
05/10/2012WO2012021821A3 Cutting elements including nanoparticles in at least one portion thereof, earth-boring tools including such cutting elements, and related methods
05/10/2012US20120111642 Polycrystalline compacts including nanoparticulate inclusions, cutting elements and earth-boring tools including such compacts, and methods of forming same
05/10/2012US20120111641 Detachable drill bit
05/10/2012US20120111639 Drill bit with extended life seal
05/10/2012US20120111638 System and method for adjusting roller cone profile on hybrid bit
05/10/2012US20120111637 Rotary drill bit with gage pads having improved steerability and reduced wear
05/10/2012US20120111635 Sample Encapsulation and Cache Device and Methods
05/10/2012US20120111630 System and method of improved depth of cut control of drilling tools
05/10/2012CA2816823A1 System and method for adjusting roller cone profile on hybrid bits
05/10/2012CA2816034A1 Cutting element structure with sloped superabrasive layer
05/09/2012EP2450525A2 Earth boring drill bits with casing component drill out capability, cutting elements for same, and methods of use
05/09/2012EP2449203A2 Hardfacing materials including pcd particles, welding rods and earth-boring tools including such materials, and methods of forming and using same
05/09/2012CN202215152U Diamond impregnated block with toothed holes
05/09/2012CN202215151U Reinforcing tooth combining polycrystalline diamond compacts and hard alloys in non-plane mode
05/09/2012CN202215150U Wear reduction cone rock bit of spiral groove
05/09/2012CN102449258A Seal assembly for a rotary earth bit
05/09/2012CN102449257A Method and apparatus for drilling large-diameter hole in ground
05/09/2012CN102444384A Cross drill bit
05/09/2012CN102444383A Slotted drill
05/09/2012CN102444104A Special tool and construction method for undamaged drilling of bottom plates of caissons
05/09/2012CN101725323B Spiral drill
05/08/2012US8172914 Infiltration of hard particles with molten liquid binders including melting point reducing constituents, and methods of casting bodies of earth-boring tools
05/08/2012US8172012 Cutting tool insert and drill bit so equipped
05/08/2012US8172011 Cutting element
05/08/2012US8172010 Rotary drill bit steerable system and method
05/08/2012US8172009 Expandable tool with at least one blade that locks in place through a wedging effect
05/08/2012US8172008 Drilling apparatus with reduced exposure of cutters and methods of drilling
05/08/2012CA2618311C Apparatus and method for stabilization of downhole tools
05/08/2012CA2546617C Dual-phase hard material, process for the production thereof and its use
05/03/2012WO2012058562A2 Interface design of tsp shear cutters
05/03/2012WO2012058410A2 Graphene-coated diamond particles, compositions and intermediate structures comprising same, and methods of forming graphene-coated diamond particles and polycrystalline compacts
05/03/2012WO2012058071A1 Polycrystalline compacts including nanoparticulate inclusions, cutting elements and earth-boring tools including such compacts, and methods of forming same
05/03/2012WO2012058045A2 Cutting elements, earth-boring tools incorporating such cutting elements, and methods of forming such cutting elements
05/03/2012WO2012057432A1 Ground drilling hammer and sleeve thereof
05/03/2012WO2012056434A1 A down-the-hole hammer drill assembly
05/03/2012WO2012023052A3 High efficiency hydraulic drill bit
05/03/2012WO2011146955A3 Drill bit
05/03/2012US20120103701 Contoured pcd and pcbn segments for cutting tools containing such segments
05/03/2012US20120103700 Cutting element structure with sloped superabrasive layer
05/03/2012US20120103699 Interface design of tsp shear cutters
05/03/2012US20120103698 Cutting elements, earth-boring tools incorporating such cutting elements, and methods of forming such cutting elements
05/03/2012US20120103697 Inserts, polycrystalline diamond compact cutting elements, earth-boring bits comprising same, and methods of foming same
05/03/2012US20120103696 Polycrystalline compacts including nanoparticulate inclusions, cutting elements and earth-boring tools including such compacts, and methods of forming same
05/03/2012US20120103695 Drilling equipment and attachment means for the same
05/03/2012US20120103694 Earth removal member with features for facilitating drill-through
05/03/2012US20120103693 System and method for drilling a borehole
05/03/2012US20120103691 Methods of coupling components of downhole tools, downhole tools and components of downhole tools
05/03/2012US20120103690 Drill Bit with Electrical Power Generation Devices
05/03/2012DE112009000926T5 Matrixpulver für an einen Matrixkörper angebrachte Schneideinsätze Matrix powder attached to a matrix body cutting inserts
05/03/2012CA2816273A1 A down-the-hole hammer drill assembly
05/03/2012CA2816063A1 Graphene-coated diamond particles, compositions and intermediate structures comprising same, and methods of forming graphene-coated diamond particles and polycrystalline compacts
05/03/2012CA2814903A1 Polycrystalline diamond cutting element
05/02/2012EP2446104A1 Downhole tool leg retention methods and apparatus
05/02/2012EP2446103A2 Sealing system and bi-directional thrust bearing arrangement for a downhole motor
05/02/2012CN202209148U Drill bit with low-exposed cutting blocks
05/02/2012CN202209147U Tapper for an annealing furnace wall
05/02/2012CN202209146U Reamer
05/02/2012CN102439258A Drilling equipment and attachment means for the same
05/02/2012CN102439257A Erosion resistant subterranean drill bits having infiltrated metal matrix bodies
05/02/2012CN102439256A Hydraulic breaker
05/02/2012CN102439233A Wear element for earth/rock working operations with enhanced wear resistance
05/02/2012CN102434165A Hard rock hob for large-caliber shaft
05/02/2012CN102434109A Diamond core bit and method for manufacturing same
05/02/2012CN102434108A Comprehensive detritus combined bit with large caliber
05/02/2012CN102434107A Down-the-hole bit with long service life
05/02/2012CN102434106A Stratum core bit and stratum core drilling tool
05/02/2012CN102434105A Composite bit with rotary cut rock-breaking function
05/02/2012CN102434104A Novel drill for construction of thread caisson pile and method for forming pile using same
05/02/2012CN102434090A Rolling-compaction type rotary rock-breaking drilling bucket
05/01/2012US8167059 Casing and liner drilling shoes having spiral blade configurations, and related methods
05/01/2012CA2518146C Bearing assembly for downhole mud motor
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