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
09/25/2012CA2529995C Cemented carbide inserts for earth-boring bits
09/25/2012CA2505828C Modified cutters
09/20/2012WO2012125917A1 Method and systems to sever wellbore devices and elements
09/20/2012WO2012125454A2 Pressure coring assembly and method
09/20/2012US20120234610 Cutting structures for fixed cutter drill bit and other downhole cutting tools
09/20/2012US20120234609 Cutting element apparatuses, drill bits including same, methods of cutting, and methods of rotating a cutting element
09/20/2012US20120234608 Cutting element placement on a fixed cutter drill bit to reduce diamond table fracture
09/20/2012US20120234607 High pressure coring assembly and method
09/20/2012US20120234606 Timed Steering Nozzle on a Downhole Drill Bit
09/20/2012DE10345700B4 Bohrkopf Wellhead
09/20/2012CA2830262A1 Method and systems to sever wellbore devices and elements
09/20/2012CA2830213A1 High pressure coring assembly and method
09/19/2012EP2499323A1 Drill bit for earth boring
09/19/2012CN202441268U Water filling drill
09/19/2012CN202441267U Combined drill bit having rock-breaking function through rotary cutting
09/19/2012CN202441266U A combined bit formed by a PDC bit and a rotary cut bit
09/19/2012CN202441265U Cutter tooth structure for inverse well drilling hob
09/19/2012CN202441264U High-efficiency down-the-hole drill bit
09/19/2012CN202441263U Long-life down-the-hole drill bit
09/19/2012CN202441262U Double sealing structure of mining drill bit
09/19/2012CN202441261U Long spiral-cone combined multifunctional drill bit
09/19/2012CN202441260U Oil field coring bit
09/19/2012CN202441259U Combined drill bit formed by rotary-cutting drill bit and cone drill bit
09/19/2012CN202441254U Deep frozen soil grouting and drilling device for mine
09/19/2012CN202440865U Subsurface deep-layer sand excavation device for inland river channels
09/19/2012CN202440815U Forming device for long-spiral filling pile extruded into rock
09/19/2012CN102686346A Rock drilling tool for rotational percussive machining of concrete, rock, masonry and such materials
09/19/2012CN102678058A Special drill for geophysical prospecting
09/19/2012CN102678057A Diamond composite sheet and preparation method thereof
09/19/2012CN102678056A Cold-fixed PDC (polycrystalline diamond compact) bit
09/19/2012CN102678055A Scraping-cutting and impacting combined type drill
09/19/2012CN102678054A Spirally bottom-expanding integrated drill bit
09/19/2012CN102678053A Crossed scraping-impacting composite drill bit
09/19/2012CN102678052A Disc cutter composite drill bit
09/19/2012CN102678051A Disc-type composite drill bit with impact cutting structure
09/19/2012CN102678050A Gear-wheel composite drill bit with impact cutting structure
09/19/2012CN102678049A Circular cutting drill bit, rotary drilling machine and rock drilling method adopting static blasting
09/19/2012CN102678048A Multi-stage hydraulic punching drill
09/19/2012CN102678040A Drilling device and method for baseplate in coal mine roadway
09/19/2012CN101748971B Well drill
09/19/2012CN101586441B High-pressure water jet system and method for drilling and enlarging holes on coal bed
09/18/2012US8268452 Bonding agents for improved sintering of earth-boring tools, methods of forming earth-boring tools and resulting structures
09/18/2012US8267204 Methods of forming polycrystalline diamond cutting elements, cutting elements, and earth-boring tools carrying cutting elements
09/13/2012WO2012121946A2 Methods of forming polycrystalline tables and polycrystalline elements and related structures
09/13/2012WO2012121945A2 Methods of forming polycrystalline tables and polycrystalline elements and related structures
09/13/2012WO2012121942A2 Polycrystalline tables, polycrystalline elements, and related methods
09/13/2012WO2012121940A2 Methods of forming polycrystalline elements and structures formed by such methods
09/13/2012WO2012087712A3 One trip multiple string section milling of subterranean tubulars
09/13/2012US20120228037 Superabrasive elements, methods of manufacturing, and drill bits including same
09/13/2012US20120228036 Fiber-containing diamond-impregnated cutting tools and methods of forming and using same
09/13/2012US20120228035 Drilling apparatus
09/13/2012CA2828870A1 Methods of forming polycrystalline tables and polycrystalline elements and related structures
09/13/2012CA2828868A1 Methods of forming polycrystalline tables and polycrystalline elements and related structures
09/13/2012CA2828867A1 Polycrystalline tables, polycrystalline elements, and related methods
09/13/2012CA2828866A1 Methods of forming polycrystalline elements and structures formed by such methods
09/12/2012EP2497896A1 Tool, facility and method for making horizontal boreholes
09/12/2012EP2497895A1 Methods of off-center drilling
09/12/2012DE202012008247U1 Bohrkrone inkl. Rückschlagventil-System Drill bit incl. Non-return valve system
09/12/2012CN202431211U Wear-resisting joint of polycrystalline diamond compact (PDC) drill bit
09/12/2012CN202431210U Spiral gauge protection structure of PDC (polycrystalline diamond compact) drill bit
09/12/2012CN202431209U Drill bit
09/12/2012CN202431208U Multi-tiered-blade multi-point-spouting stirring drill bit
09/12/2012CN202431207U Composite cutting teeth structure for PDC (polycrystalline diamond compact) bit
09/12/2012CN202431206U Double-annular surface down-the-hole drill bit
09/12/2012CN202431205U Gauge protection structure of directional well drill bit
09/12/2012CN202431204U Drill bit
09/12/2012CN202431203U Cross-shaped drill bit
09/12/2012CN202431202U Comprehensive rock-crushing large-caliber combined drill bit
09/12/2012CN202431201U Spline-reinforced type down-hole drill bit
09/12/2012CN202431200U Symmetrical type down-the-hole drill bit
09/12/2012CN202431199U Asymmetric down-the-hole drill bit
09/12/2012CN202431198U High-speed tunneling downhole drill bit
09/12/2012CN202431197U Conical-toothed down-the-hole drill bit
09/12/2012CN202431196U Tail pipe reinforcing type down-the-hole drill bit
09/12/2012CN202431195U Ore drill
09/12/2012CN202431194U I-shaped drill bit
09/12/2012CN202431193U Rolling bearing for mining rock bit
09/12/2012CN202431192U Step drill
09/12/2012CN202431191U Controllable-flow coal mining drill bit
09/12/2012CN102667049A Impregnated cutting elements with large abrasive cutting media and methods of making and using the same
09/12/2012CN102661124A Wear-resistant PDC (polycrystalline diamond compact) drill bit capable of efficiently reaming holes
09/12/2012CN102661123A High-temperature resistant floating sealing device for cone bit
09/11/2012US8261858 Element containing thermally stable polycrystalline diamond material and methods and assemblies for formation thereof
09/07/2012WO2012118992A2 High performance wellbore departure and drilling system
09/07/2012WO2012118824A2 System for logging while running casing
09/07/2012WO2012082724A3 Pdc bits with cutters laid out in both spiral directions of bit rotation
09/07/2012WO2012075134A3 Hardfacing configuration for a drilling tool
09/07/2012WO2012064855A3 Underground drilling apparatus
09/07/2012WO2012058410A3 Graphene-coated diamond particles, compositions and intermediate structures comprising same, and methods of forming graphene-coated diamond particles and polycrystalline compacts
09/07/2012CA2830721A1 High performance wellbore departure and drilling system
09/06/2012US20120222864 Completion arrangement
09/06/2012DE19780282B3 Freitragend ausgebildeter Erweiterungsbohrer Unsupported trained reamer
09/05/2012CN202417371U Rotary drilling bottom-enlarging pore-forming slag-dredging device
09/05/2012CN202417319U Anti-sticking drill bit
09/05/2012CN202417318U Non-excavation hole drilling mud chip drill
09/05/2012CN202417317U Double-layer coring bit used for coal mine
09/05/2012CN202417316U Novel rock drill bit
09/05/2012CN202417315U Coal mine gas extraction-hole drill bit
09/05/2012CN202417314U Air hammer drill bit for ultra-deep well
09/05/2012CN202417313U Single cone bit with PDC (Polycrystalline Diamond Compact) teeth
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