E21B 10 - Drill bits - Patents Sitemap

Patents for E21B 10 - Drill bits (19,464)
11/2006
11/21/2006	US7139689 Simulating the dynamic response of a drilling tool assembly and its application to drilling tool assembly design optimization and drilling performance optimization
11/21/2006	US7137463 Polycrystaline diamond compact insert reaming tool
11/21/2006	US7137462 Drill bit
11/21/2006	US7137461 Masonry drilling tool
11/21/2006	US7137460 Back reaming tool
11/21/2006	CA2361928C Mills for wellbore operations
11/17/2006	CA2547375A1 Drill bit and cutting inserts for hard/abrasive formations
11/16/2006	US20060254830 Thermally stable diamond brazing
11/16/2006	US20060254829 Angular offset PDC cutting structures
11/16/2006	US20060254828 Fracture and wear resistant compounds and rock bits
11/16/2006	US20060254823 Drill bit lubricant with enhanced load carrying/anti wear properties
11/15/2006	CN1284919C Drilling bit structure for enlarging hole
11/14/2006	CA2298656C Drilling tool for down-the-hole drilling, reamer means and body element for use in the tool
11/13/2006	CA2546159A1 Angular offset pdc cutting structures
11/09/2006	US20060249311 Grease filling arrangement in a cutter for a boring head
11/09/2006	US20060249309 Drill bit, system, and method for drilling a borehole in an earth formation
11/09/2006	US20060249308 Cutting element
11/09/2006	DE19654597B4 Bohrkrone Drill bit
11/09/2006	DE10336169B4 Komposit-Werkzeug für schlagende und/oder abrasive Belastungen Composite tool for percussive and / or abrasive loads
11/08/2006	EP1718838A1 Hydrodynamic pump passages for rolling cone drill bit
11/08/2006	CN2835562Y Anchor rod hole reamer
11/08/2006	CN2835524Y Pneumatic or hydraulic anchor rod and anchor pile hole reaming machine
11/08/2006	CN2835523Y Non-coring bit with roller gear
11/08/2006	CN2835349Y Under-reamed device
11/08/2006	CN2835347Y Tool rest of under-reamed device for foundation construction
11/08/2006	CN2835346Y Frame for under-reamed device for construction
11/08/2006	CN2835342Y Bottom-enlarging device frame capable of being used together with immersed tube
11/08/2006	CN1858396A Diamond composite sheet drill bit with combined pole and producing process
11/07/2006	US7131506 Flightless rock auger for use with pressure drills with quick attachment and method of use
11/07/2006	US7131505 Drilling with concentric strings of casing
11/07/2006	US7131504 Pressure activated release member for an expandable drillbit
11/07/2006	CA2228652C Cutting tool for drilling concrete, aggregate or masonry
11/02/2006	WO2006116729A1 Earth boring bit lubricant chamber barrier member with dispersed fibers
11/02/2006	WO2006114306A1 A drilling tool
11/02/2006	US20060243496 Drilling and/or chiseling tool
11/02/2006	US20060243495 Multi-purpose drilling tool
11/02/2006	US20060243494 Earth boring bit lubricant chamber barrier member with dispersed fibers
11/02/2006	US20060243452 System for lining a section of a wellbore
11/02/2006	EP1716948A2 Composite structure having a non-planar interface and method of making same
11/02/2006	EP1627129B1 Drill bit, system, and method for drilling a borehole in an earth formation
11/02/2006	EP1334259B1 Load responsive hydrodynamic bearing
11/02/2006	DE112004000290T5 Bohrmeißel, Bohrerschaft und ein selbstbohrender Ankerbolzen Drill bit, drill shaft and a self-drilling anchor bolt
11/01/2006	CN2833090Y Rock drill bit for mining
11/01/2006	CN2833089Y Hard alloy slice with wide-edge bottom for alloy bit
11/01/2006	CN1282817C Rock drill
11/01/2006	CN1282816C A drilling tool used in horizontal drilling applications
11/01/2006	CN1282805C Method for building a diaphragm wall in the ground,trench wall cutter and trench wall cutting apparatus
10/2006
10/31/2006	US7128773 Compositions having enhanced wear resistance
10/31/2006	US7128174 Drilling and anchoring device for diverse applications
10/31/2006	US7128173 PCD face seal for earth-boring bit
10/31/2006	US7128171 Hydrodynamic pump passages for rolling cone drill bit
10/31/2006	US7128168 Reamer apparatus for ground boring machine
10/26/2006	WO2006112763A1 Drilling tool and method for down-the-hole drilling
10/26/2006	WO2005100736A3 Coupler and roof drill bit assembly using such coupler
10/26/2006	US20060237236 Composite structure having a non-planar interface and method of making same
10/26/2006	US20060237235 Cutting element having enhanced cutting geometry
10/26/2006	US20060237234 Earth boring tool
10/26/2006	DE102005011120B4 Schneckenbohrer Auger
10/26/2006	CA2544654A1 Composite structure having a non-planar interface and method of making same
10/25/2006	CN1281844C Drilling and reaming machine
10/24/2006	US7124843 Bit assembly for a hammering drill
10/24/2006	US7124842 Cutting elements of gage row and first inner row of a drill bit
10/24/2006	US7124753 Brazed diamond tools and methods for making the same
10/24/2006	CA2397141C Rock bit seal with extrusion prevention member
10/24/2006	CA2324766C Rock bit seal with multiple dynamic seal surface elements
10/24/2006	CA2298636C Diamond-coated button insert for drilling and percussive rock drill
10/19/2006	WO2006110461A2 Drilling with casing
10/19/2006	US20060231294 Apparatus for drilling a hole and a method for its application
10/19/2006	US20060231293 Matrix drill bits and method of manufacture
10/19/2006	US20060231292 PCD face seal for earth-boring bit
10/19/2006	DE102006017001A1 Matrix-Kronenkörper und Verfahren zu deren Herstellung Matrix bit body, and processes for their preparation
10/18/2006	EP1711679A1 Method, drilling machine, drill bit and bottom hole assembly for drilling by electrical discharge pulses
10/18/2006	EP1334258B1 Percussive down-the-hole hammer for rock drilling, and a drill bit used therein
10/18/2006	CN2828298Y Convex addendum cutting tooth
10/18/2006	CN2828297Y Coal petrography drill bit
10/18/2006	CN1849436A Device for drilling a bore in the ground
10/18/2006	CN1280517C Abrasive material and drilling method using said abrasive material
10/18/2006	CN1280516C Drill bit
10/18/2006	CN1280515C Hole drilling equipment and method
10/17/2006	US7121365 Journal pin having bearing surface with cutter cone mounted; grease reservoir; synthetic lubricant basestocks; molybdenum disulfide, and hexagonal boron nitride; drilling subterranean formations
10/17/2006	CA2392937C Drill bit having adjustable total flow area
10/17/2006	CA2383657C Method for hardfacing roller cone drill bit legs
10/17/2006	CA2333341C Low coefficient of thermal expansion cermet compositions
10/14/2006	CA2539525A1 Matrix drill bits and method of manufacture
10/11/2006	EP1709282A2 Anti-tracking earth boring bit with selected varied pitch for overbreak optimization and vibration reduction
10/11/2006	CN2825917Y Long-life PDC hole reaming bit
10/11/2006	CN2825916Y PDC hole reaming bit with anti-blockage external slot
10/11/2006	CN1846039A 岩石钻头 Rock drill
10/10/2006	US7117961 Dynamic seal with soft interface
10/10/2006	US7117960 Bits for use in drilling with casting and method of making the same
10/10/2006	US7117958 One-step directional coring or drilling system
10/10/2006	CA2220067C Tubular actuator component for use in a drill-string
10/05/2006	US20060224368 Force-balanced roller-cone bits, systems, drilling methods, and design methods
10/05/2006	US20060222853 Composite constructions with oriented microstructure
10/05/2006	US20060219442 Earth-boring bit with shear cutting elements
10/05/2006	US20060219439 Stress relief feature on PDC cutter
10/05/2006	CA2690456A1 Rotary drill bit shank, rotary drill bits so equipped, and methods of manufacture
10/04/2006	EP1706576A2 Polycrystalline diamond abrasive elements
10/04/2006	EP1706575A2 Drill bit with protection member
10/04/2006	EP1706574A1 Method and apparatus for directional drilling

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