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)
10/2012
10/10/2012CN202483456U Novel arc-head petroleum drill bit
10/10/2012CN202483455U Coring bit with multiple scrapers
10/10/2012CN202483454U Six-blade polycrystalline diamond compact (PDC) bit
10/10/2012CN202483453U Six-blade matrix PDC (Polycrystalline Diamond Compact) drill bit
10/10/2012CN202483452U PDC (Polycrystalline Diamond Compact) drill bit
10/10/2012CN202483451U Eight-blade PDC (Polycrystalline Diamond Compact) drill bit
10/10/2012CN202483450U Five-blade polycrystalline diamond compact (PDC) bit
10/10/2012CN202483449U Five-blade steel body polycrystalline diamond compact (PDC) bit
10/10/2012CN202483448U Centering rock bit
10/10/2012CN202483447U Three-level stabilizing device for step type chambering cutting head
10/10/2012CN202483446U Drilling, reaming and centering combined bit
10/10/2012CN202483445U Cone bit bearing sealing device
10/10/2012CN202483444U Variable-angle diamond tooth drill bit with multiple scraper strips
10/10/2012CN202483434U Eccentric casing drilling tool
10/10/2012CN202480461U Polycrystalline diamond compact with stable structure
10/10/2012CN102725475A Shock reduction tool for a downhole electronics package
10/10/2012CN102720434A Polycrystalline diamond hard alloy composite sheet substrate, composite and preparation method
10/10/2012CN102720433A Cone bit spring energy storage bearing double sealing rings
10/10/2012CN102031931B Self-rotating jet drilling device
10/09/2012US8281882 Jack element for a drill bit
10/09/2012US8281881 Rolling cone drill bit having cutting elements with improved orientations
10/09/2012US8281880 Expandable tool for an earth boring system
10/09/2012US8281876 Reamers and methods for directional drilling
10/09/2012CA2571358C Entrainment fluid channeling device for a down-hole drill string
10/04/2012WO2012135497A2 Coating on pdc/tsp cutter for accelerated leaching
10/04/2012WO2012135257A2 Cutting element having modified surface
10/04/2012WO2012134817A2 Methods of forming earth-boring tools and related structures
10/04/2012WO2012103494A3 Non-magnetic drill string member with non-magnetic hardfacing and method of making the same
10/04/2012WO2012103491A3 Non-magnetic hardfacing material
10/04/2012WO2011121341A3 Downhole tool
10/04/2012US20120247841 Coating on pdc/tsp cutter for accelerated leaching
10/04/2012US20120247840 Methods of forming earth boring tools and related structures
10/04/2012US20120247838 Drill bit and core retaining device
10/04/2012US20120247834 Cutting element having modified surface
10/04/2012DE112010003521T5 Bohrmeißel Drill bit
10/04/2012CA2830675A1 Cutting element having modified surface
10/03/2012CN202467845U Hard rock hob of large-caliber vertical shaft
10/03/2012CN202467727U Self-lubrication and dust-accumulation device of down-hole drilling machine
10/03/2012CN202467673U Energy-saving type deep prospecting diamond bit with long service life
10/03/2012CN202467672U Polycrystalline diamond compact combined drill bit
10/03/2012CN202467671U Structure of polycrystalline diamond compact base body
10/03/2012CN202467670U Substrate of polycrystalline diamond compact
10/03/2012CN202467669U Basal body for forming polycrystalline diamond composite sheet
10/03/2012CN202467668U Polycrystalline diamond compact (PDC) inner concave drill bit
10/03/2012CN202467667U Diamond composite sheet drag-type bit
10/03/2012CN202467666U Sapphire inner screw slurry guiding groove pulse type spiral complex drill bit for comprehensive drilling
10/03/2012CN202467665U Combined drilling tool for rotary drilling rig
10/03/2012CN202467664U Hollow anchor rod drill bit
10/03/2012CN202467663U Gradient structure diamond-cemented carbide composite ball tooth
10/03/2012CN202467662U Anchor rod drill bit
10/03/2012CN202467661U Double-sealing structure for drill bit for mine
10/03/2012CN202467660U Mining roller bit structure
10/03/2012CN202467659U Mining drill bit for drilling vent of coal mine
10/03/2012CN202467658U Adjustable air jet structure of mining roller bit
10/03/2012CN202467639U Drilling robot
10/03/2012CN202467214U Anchor installation tool and drill bit for the same
10/03/2012CN102712544A Polycrystalline diamond
10/03/2012CN102704857A Underground supercharging and accelerating system
10/03/2012CN102704856A Water drenching device of combined type drill bit of coal mining robot
10/03/2012CN102704855A Process for preparing diamond geological coring bit
10/03/2012CN102704854A Profiled alloy drill bit and tooth fastening process thereof
10/03/2012CN102704853A Modular cutting tooth with controllable drilling specific pressure
10/03/2012CN102704852A Hinged drill with openable and closable inner core
10/03/2012CN102704851A Bottom expanding drill bit and rotary drilling machine
10/03/2012CN102704850A Double-sealed structure for mining drill
10/03/2012CN102704849A Double seal structure of mining drill bit
10/03/2012CN102704848A Rolling bearing of mine roller bit
10/03/2012CN102704847A Mining rock bit structure
10/03/2012CN102704846A Adjustable air injection structure of mining rock bit
10/03/2012CN102704845A Mining drill bit for drilling air vents of coal mine
10/03/2012CN102704844A Metal plate drill bit
10/03/2012CN102704843A Efficient bit of pilot hole
10/03/2012CN101824967B Novel high adhesion strength diamond engineering thin wall drilling bit and manufacturing method
10/02/2012US8277722 Production of reduced catalyst PDC via gradient driven reactivity
10/02/2012US8276690 Expandable downhole tool
10/02/2012CA2646715C Dual stripper rubber cartridge with leak detection
09/2012
09/27/2012WO2012129217A2 Compact portable auger rack
09/27/2012WO2012128948A1 Polycrystalline diamond compact including a carbonate-catalyzed polycrystalline diamond body and applications therefor
09/27/2012WO2012126947A1 Directional drilling tool
09/27/2012WO2012106486A3 Downhole tool actuation
09/27/2012US20120241226 Polycrystalline diamond, polycrystalline diamond compacts, methods of making same, and applications
09/27/2012US20120241225 Composite polycrystalline diamond body
09/27/2012US20120241224 Polycrystalline diamond compact including a carbonate-catalyzed polycrystalline diamond body and applications therefor
09/27/2012US20120241223 Cutting Insert For A Roof Drill Bit
09/27/2012US20120241222 Earth-boring bits and other parts including cemented carbide
09/27/2012DE112010000716T5 Dachbohrmeissel, dachbohrmeisselkörper undharter schneideinsatz für den dachbohrmeissel Dachbohrmeissel, dachbohrmeisselkörper undharter cutting insert for the dachbohrmeissel
09/27/2012DE102012004938A1 Schneidplatte für einen Firstbohrmeißel Cutting plate for a roof drill bit
09/27/2012CA2824781A1 Compact portable auger rack
09/26/2012CN202451064U Layered compound diamond bit
09/26/2012CN202451063U V-shaped diamond hard alloy composite slice
09/26/2012CN202451062U Sinusoidal diamond hard alloy composite sheet
09/26/2012CN202451061U Reversed V-shaped diamond hard alloy composite sheet
09/26/2012CN202451060U Novel spherical tooth based on hard alloy
09/26/2012CN202451059U Hole dilating drill bit
09/26/2012CN102691476A Cutting insert for roof drill bit
09/26/2012CN102052058B Method for producing novel high-grade rock drilling diamond compound tooth
09/25/2012US8272459 Superabrasive inserts including an arcuate peripheral surface
09/25/2012US8272458 Drill bit with replaceable blade members
09/25/2012CA2720912C Bi-steel percussive drill rod
09/25/2012CA2556052C Polycrystalline diamond composite constructions comprising thermally stable diamond volume
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