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)
11/2012
11/28/2012CN102797420A Bidirectional integrated spring energy storage sealed roller bit
11/28/2012CN102797254A Construction method for bottom-expanded pile casting by long-spiral drilling and compacted half soil sampling
11/28/2012CN102022077B Drilling device for underground embedded pipe orifice well of soil source heat pump system
11/28/2012CN102003145B Hole driven type horizontal directional drilling reverse circulation hole dilating drill
11/28/2012CN101595272B Microtunnelling system and apparatus
11/28/2012CN101532391B In-hole drilling tool integrating drilling, slotting and punching coal seam and using method thereof
11/28/2012CN101506459B Pcd cutters with enhanced working surfaces adjacent a cavity
11/28/2012CN101490358B Resonance enhanced drilling method and apparatus
11/27/2012US8317893 Downhole tool parts and compositions thereof
11/27/2012US8316969 Superabrasive materials and methods of manufacture
11/27/2012US8316968 Rolling cone drill bit having sharp cutting elements in a zone of interest
11/27/2012US8316967 Earth-boring tools with primary and secondary blades, methods of forming and designing such earth-boring tools
11/27/2012US8316966 Method and system for accessing subterranean deposits from the surface and tools therefor
11/27/2012CA2689140C Interchangeable bearing blocks for drill bits, and drill bits including same
11/27/2012CA2664212C Abrasive wear-resistant hardfacing materials, drill bits and drilling tools and including abrasive wear-resistant hardfacing materials, and methods for applying abrasive wear resistant hardfacing materials to drill bits and drilling tools
11/27/2012CA2563758C Underreaming and stabilising tool to be put into service in a drilling hole and method for its use
11/22/2012WO2012112220A3 Cutting elements having a pre-formed fracture plane for use in cutting tools
11/22/2012WO2012109346A3 Tools for use in subterranean boreholes having expandable members and related methods
11/22/2012US20120292118 Adnr composite
11/22/2012US20120292117 Wellbore tools having superhydrophobic surfaces, components of such tools, and related methods
11/22/2012US20120292115 Drill Bits and Methods of Drilling Curved Boreholes
11/22/2012CA2834071A1 Multi-position mechanical spear for multiple tension cuts while removing cuttings
11/21/2012EP2524103A2 Drill bit bearing contact pressure reduction
11/21/2012CN202544753U Single-cone bit tooth face structure for hard formation
11/21/2012CN202544752U High pressure jet device
11/21/2012CN202544751U Expanding drill bit
11/21/2012CN202544750U Drillable drill of surface casing
11/21/2012CN202544749U Special drill bit for hamstring of I-shaped steel shed on coal roadway
11/21/2012CN202544748U Geological drilling device
11/21/2012CN102792073A High temperature/high pressure seal
11/21/2012CN102791953A A rock drill bit, a drilling assembly and a method for percussive rock drilling
11/21/2012CN102787806A Concentric simutaneous casing drilling tool
11/21/2012CN102787805A Precision forging with powder tank down-the-hole drill bit
11/21/2012CN102787801A Impact perforating machine
11/21/2012CN101975025B Fractal design method for diamond particle distribution on diamond bit
11/20/2012US8312944 Percussion hammer bit with a driver sub including a guide sleeve portion
11/20/2012US8312943 Thermally-stable polycrystalline diamond compact and applications therefor such as drill bits
11/20/2012US8312942 Roller cone drill bits with improved fluid flow
11/20/2012US8312941 Modular fixed cutter earth-boring bits, modular fixed cutter earth-boring bit bodies, and related methods
11/20/2012US8312613 Percussion drilling assembly with annular locking member
11/15/2012WO2012154415A2 Apparatus and method for drilling wellbores based on mechanical specific energy determined from bit-based weight and torque sensors
11/15/2012WO2012125454A3 Pressure coring assembly and method
11/15/2012WO2012118992A3 High performance wellbore departure and drilling system
11/15/2012WO2012088102A3 Method and apparatus for milling a zero radius lateral window in casing
11/15/2012WO2012080819A3 Optimized drilling
11/15/2012WO2012073102A3 Mold assemblies including a mold insertable in a container
11/15/2012WO2012071515A3 Polycrystalline diamond constructions having optimized material composition
11/15/2012WO2012049331A3 A down-the-hole hammer
11/15/2012WO2011114167A3 Drill bit
11/15/2012US20120285749 Drill bit and production method
11/15/2012US20120285748 Bearing Assembly
11/15/2012US20120285293 Composite sintered powder metal articles
11/15/2012DE112010005007T5 Dichtungsring Sealing ring
11/14/2012EP2521831A1 Rotary drill and method for the production thereof
11/14/2012EP2521830A1 Reamer and bit interaction model system and method
11/14/2012CN202531027U Multi-blade cutting hydraulic hole enlarger
11/14/2012CN202531019U Multi-blade cutting hydraulic hole enlarging drilling machine
11/14/2012CN102782243A Drill bits with axially-tapered waterways
11/14/2012CN102777126A Drilling apparatus, method, and system
11/14/2012CN102773472A Polycrystalline diamond drill bit matrix powder
11/14/2012CN102086755B Continuous oil pipe-based guide high-pressure jet drilling system
11/13/2012US8309050 Polycrystalline diamond materials having improved abrasion resistance, thermal stability and impact resistance
11/13/2012US8309018 Earth-boring rotary drill bits and methods of manufacturing earth-boring rotary drill bits having particle-matrix composite bit bodies
11/13/2012US8307921 Drilling apparatus
11/13/2012US8307920 Roller cone disk with shaped compacts
11/13/2012US8307914 Drill bits and methods of drilling curved boreholes
11/13/2012US8307739 Methods for forming earth-boring tools having pockets for receiving cutting elements
11/13/2012CA2662966C Methods for applying wear-resistant material to exterior surfaces of earth-boring tools and resulting structures
11/08/2012WO2012151061A2 Earth-boring tools and methods of forming such earth-boring tools
11/08/2012WO2012103342A3 Fabricated mill body with blade pockets for insert placement and alignment
11/08/2012US20120279786 Drill Bits and Drilling Apparatuses Including the Same
11/08/2012US20120279785 Earth-boring tools and methods of forming such earth-boring tools
11/08/2012CA2834505A1 Earth-boring tools and methods of forming such earth-boring tools
11/07/2012EP2519706A2 Drive pin support
11/07/2012EP2519705A1 Earth-boring tools having differing cutting elements on a blade and related methods
11/07/2012EP2519372A1 Rock drilling tool for rotational percussive machining of concrete, rock, masonry and such materials
11/07/2012EP2519369A1 Polycrystalline diamond compacts, methods of making same, and applications therefor
11/07/2012CN202520235U High-efficient wear-resistant shock-proof polycrystalline diamond compact
11/07/2012CN202520234U Bionic non-smooth PDC (Polycrystalline Diamond Compact)
11/07/2012CN202520233U Layered-tooth coreless drill
11/07/2012CN202520232U Diamond compact drag bit
11/07/2012CN202520231U Multifunctional polycrystalline diamond compound sheet
11/07/2012CN202520230U Threaded drill bit with rotating ring
11/07/2012CN202520229U Deep subsurface sand-mining drill bit of inland river
11/07/2012CN202520228U Integrated concentric overburden drilling tool
11/07/2012CN202520227U Eccentric follow drilling tool for impact device with high wind pressure
11/07/2012CN202520226U Mechanical interlocking device of step type broaching bit tool
11/07/2012CN202520225U Gas drainage drill with flap valve on center hole
11/07/2012CN102767337A Sleeve type screw pile machine drill and construction method for eliminating barriers
11/07/2012CN102767336A Manufacture method of hot-pressing ordered-arranged broken polycrystalline impregnated bits
11/07/2012CN102767335A Improved-type multifunctional combined drill bit
11/07/2012CN102767334A Multifunctional combined drill bit
11/07/2012CN102764893A Articles having improved resistance to thermal cracking
11/07/2012CN102220760B Method for casting deep inverted T-shaped pile
11/06/2012US8302709 Downhole tool leg retention methods and apparatus
11/06/2012US8302706 Apparatus and method for installing ground anchoring systems
11/01/2012WO2012149272A2 Downhole tools having mechanical joints with enhanced surfaces, and related methods
11/01/2012WO2012149120A2 Methods of attaching rolling cutters in fixed cutter bits using sleeve, compression spring, and/or pin(s)/ball(s)
11/01/2012WO2012149086A2 Polycrystalline diamond compact cutters with conic shaped end
11/01/2012WO2012148965A2 Drill bit for boring earth and other hard materials
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