| Patents for E21B 10 - Drill bits (19,464) |
|---|
| 07/16/2008 | CN201087693Y Hole-drilling guncreting mechanical agitation bottom-expanding drill |
| 07/16/2008 | CN101220730A Exterior lifting and pressing type ream bit for solum hole |
| 07/16/2008 | CN100402796C Tool element manufacturing method |
| 07/16/2008 | CN100402795C Cutting tool and method of using same |
| 07/15/2008 | US7398840 Matrix drill bits and method of manufacture |
| 07/10/2008 | US20080164073 Degradation Assembly |
| 07/10/2008 | US20080164072 Degradation Assembly |
| 07/10/2008 | US20080164071 Superabrasive cutting elements with enhanced durability and increased wear life, and drilling apparatus so equipped |
| 07/10/2008 | US20080164070 Reinforcing overlay for matrix bit bodies |
| 07/10/2008 | US20080164069 Drill Bit and Cutter Element Having Chisel Crest With Protruding Pilot Portion |
| 07/10/2008 | US20080163723 Earth-boring bits |
| 07/10/2008 | CA2617432A1 Method and device for producing a cased string bore |
| 07/09/2008 | CN101218413A Rotary drill bit shank, rotary drill bits so equipped, and methods of manufacture |
| 07/09/2008 | CN101215955A Positive cycle and reverse circulation dual-purpose three teeth roller bit |
| 07/09/2008 | CN100400791C Additional pressure balance device of bearing cavity for tri-cone rotary drill bit |
| 07/08/2008 | US7395885 Cutting element with canted interface surface and bit body incorporating the same |
| 07/08/2008 | US7395884 High-strength/high toughness alloy steel drill bit blank |
| 07/08/2008 | US7395883 Keyed connection for drill bit |
| 07/08/2008 | US7395882 Casing and liner drilling bits |
| 07/08/2008 | US7395880 Mortar removal drill bit system |
| 07/08/2008 | CA2512756C Cutting device and method for producing a cut hole |
| 07/08/2008 | CA2477576C A single cone bit with offset axis and composite cones |
| 07/08/2008 | CA2305812C Drill bit inserts with zone of compressive residual stress |
| 07/03/2008 | WO2008079285A1 A hardfacing material for hardfacing earth boring bits used in abrasive wear environments and a method of manufacturing the same |
| 07/03/2008 | WO2008079211A1 Computer aided design of rock drilling bit |
| 07/03/2008 | WO2008077278A1 A lengthened sealing and bearing assembly of a roller bit |
| 07/03/2008 | WO2008048642A8 Bearing insert sleeve for roller cone bit |
| 07/03/2008 | US20080156545 Method, System, and Apparatus of Cutting Earthen Formations and the like |
| 07/03/2008 | US20080156544 Drill bit with cutter element having crossing chisel crests |
| 07/03/2008 | US20080156543 Rock Bit and Inserts With a Chisel Crest Having a Broadened Region |
| 07/03/2008 | US20080156542 Rock Bit and Inserts With Wear Relief Grooves |
| 07/03/2008 | US20080156541 Downhole Hammer Assembly |
| 07/03/2008 | US20080156539 Non-rotating drill system and method |
| 07/03/2008 | US20080156536 Apparatus and Method for Vibrating a Drill Bit |
| 07/03/2008 | DE112006002143T5 Ultraharte schweißbare Materialien und zugehörige Herstellungsverfahren Ultra-hard weldable materials and associated manufacturing processes |
| 07/03/2008 | DE102006059301B3 Boreholes producing device for e.g. underground mining, has borehole closure utilized as pig, which is arranged in drilling direction in front of pilot crown such that pig migrates during drilling process in front of pilot crown |
| 07/02/2008 | EP1815102B1 One trip milling system |
| 07/02/2008 | CN201080787Y Rolling sealing three teeth roller bit |
| 07/02/2008 | CN201080786Y Truncation and cutting type drilling bucket |
| 07/02/2008 | CN201080785Y Parallel coal drill |
| 07/02/2008 | CN201080784Y End-face cutting drill head |
| 07/02/2008 | CN101210480A Four-in-one drilling tool |
| 07/01/2008 | US7392866 Roof drilling system improvements |
| 07/01/2008 | US7392865 Randomly-oriented composite constructions |
| 07/01/2008 | US7392863 Rock drill bit |
| 07/01/2008 | US7392862 Seal insert ring for roller cone bits |
| 07/01/2008 | US7392857 Apparatus and method for vibrating a drill bit |
| 06/26/2008 | WO2008076908A2 Core drill bit with extended matrix height |
| 06/26/2008 | WO2008076689A1 Cutting bit with split wear ring and method of making same |
| 06/26/2008 | WO2008076420A1 Superabrasive cutting elements with enhanced durability and increased wear life, and drilling apparatus so equipped |
| 06/26/2008 | WO2008076117A1 Modular system for a back reamer |
| 06/26/2008 | US20080149399 Rotary percussion drill with a hard material bit |
| 06/26/2008 | US20080149398 Novel bits and cutting structures |
| 06/26/2008 | US20080149397 System, method and apparatus for hardfacing composition for earth boring bits in highly abrasive wear conditions using metal matrix materials |
| 06/26/2008 | US20080149396 Roller Reamer |
| 06/26/2008 | US20080149393 Earth boring drill bits with casing component drill out capability and methods of use |
| 06/26/2008 | DE112006002137T5 Verfahren und Systeme zum Konstruieren und/oder Auswählen von Bohrausrüstung mit einer gewünschten Bohrmeißellenkbarkeit Methods and systems for designing and / or selecting of drilling equipment with a desired Bohrmeißellenkbarkeit |
| 06/26/2008 | DE112006002134T5 Verfahren und Systeme zum Konstruieren und/oder Auswählen von Bohrausrüstung unter Verwendung von Vorhersagen des Ganges des Drehbohrmeißels Methods and systems for constructing and / or selecting drilling equipment using predictions of the response of the drill bit |
| 06/26/2008 | DE102006060776A1 Component e.g. for drilling machine for drilling into geological rock formation, has drilling machine having compatible base body with coating provided and ductile metal base material embedded with hard material particles |
| 06/26/2008 | CA2826590A1 Core drill bit with extended matrix height |
| 06/26/2008 | CA2672658A1 System for steering a drill string |
| 06/26/2008 | CA2671061A1 Core drill bit with extended matrix height |
| 06/25/2008 | EP1934426A1 Under-reaming and stabilizing tool for use in a borehole and method for using same |
| 06/25/2008 | CN201078193Y Straight line-shaped hard alloy pricker slice |
| 06/25/2008 | CN201078192Y Well-digging core drill |
| 06/25/2008 | CN101205797A Addendum reinforced steel tooth bit |
| 06/25/2008 | CN101204743A Rotary percussion drill bit with a hard material insert |
| 06/25/2008 | CN100396881C Auger flight support for plural auger coal mining systems |
| 06/25/2008 | CN100396878C Composite tool insert |
| 06/24/2008 | US7389834 Braze alloys |
| 06/24/2008 | US7389833 Multi-sectional percussive drill bit assembly |
| 06/24/2008 | US7389829 Method and apparatus for forming bored hole |
| 06/19/2008 | WO2008073873A2 Magnetic earth bit seal |
| 06/19/2008 | WO2008073310A1 Methods of attaching a shank to a body of an earth boring drilling tool, and tools formed by such methods |
| 06/19/2008 | WO2008073309A2 Rotary drag bits having a pilot cutter configuration and method to pre-fracture subterranean formations therewith |
| 06/19/2008 | WO2008073308A2 Displacement members and methods of using such displacement members to form bit bodies of earth boring rotary drills bits |
| 06/19/2008 | WO2008073307A2 Impregnated bit with changeable hydraulic nozzles |
| 06/19/2008 | US20080145686 Articles Having Improved Resistance to Thermal Cracking |
| 06/19/2008 | US20080142276 Thermally stable ultra-hard material compact constructions |
| 06/19/2008 | US20080142275 Dual-Edge Working Surfaces for Polycrystalline Diamond Cutting Elements |
| 06/19/2008 | US20080142274 Downhole Hammer Assembly |
| 06/19/2008 | US20080142273 Downhole Hammer Assembly |
| 06/19/2008 | US20080142272 Wear Resistant Assembly |
| 06/19/2008 | US20080142271 Methods of designing rotary drill bits including at least one substantially helically extending feature |
| 06/19/2008 | US20080142267 Multi-Edge Working Surfaces for Polycrystalline Diamond Cutting Elements |
| 06/19/2008 | US20080142266 Tension/collar/reamer assemblies and methods |
| 06/19/2008 | US20080142262 Core Drill Bit with Extended Crown Height |
| 06/19/2008 | CA2671427A1 Displacement members and methods of using such displacement members to form bit bodies of earth-boring rotary drill bits |
| 06/18/2008 | EP1933003A1 Steerable bit assembly and methods |
| 06/18/2008 | EP1931858A1 Methods and systems for design and/or selection of drilling equipment based on wellbore drilling simulations |
| 06/18/2008 | EP1931855A1 Mechanically modified filter cake |
| 06/18/2008 | EP1931854A1 Methods and systems for designing and/or selecting drilling equipment using predictions of rotary drill bit walk |
| 06/18/2008 | EP1931853A1 Method and rock drilling rig for hole drilling |
| 06/18/2008 | EP1454030B1 A boring head and a roller cutter and a saddle for a boring head for rotary drilling |
| 06/18/2008 | CN201074480Y PDC drill bit |
| 06/18/2008 | CN101200998A Bonding structure and bonding method for cemented carbide element and diamond element, cutting tip and cutting element for drilling tool, and drilling tool |
| 06/18/2008 | CN101200997A Melt casting type diamond drill bit |
| 06/18/2008 | CN101200994A Method and apparatus for creating a borehole in the ground |
| 06/17/2008 | US7387178 Self relieving seal |
| 06/17/2008 | US7387177 Bearing insert sleeve for roller cone bit |