E21B 10 - Drill bits - Patents Sitemap

Patents for E21B 10 - Drill bits (19,464)
11/2011
11/30/2011	CN202055750U 螺旋型挤密钻孔装置 Compaction spiral drilling equipment
11/30/2011	CN202055239U Extruding-expanding rotary cutting device for branch plate pile
11/30/2011	CN102261261A 构造煤发育区钻进、增透一体化装置 Tectonic coal development zone drilling, AR Integrated Device
11/30/2011	CN102261224A 一种拖动式筛孔护壁钻头 One kind of drag-type drill sieve Wall
11/30/2011	CN101793157B 一种充填体支护的方法 One kind of filling body support method
11/29/2011	US8066087 Thermally stable ultra-hard material compact constructions
11/29/2011	US8066085 Stochastic bit noise control
11/29/2011	US8066084 Drilling apparatus with reduced exposure of cutters and methods of drilling
11/29/2011	US8065935 Method of manufacturing a rotary drill bit
11/29/2011	CA2655142C Multi-sectional percussive drill bit assembly
11/24/2011	WO2011146490A1 Two pipe horizontal directional drilling system
11/24/2011	WO2011144670A1 Polycrystalline diamond
11/24/2011	WO2011123765A3 Down-the-hole drill hammer having an extendable drill bit assembly
11/24/2011	WO2011097446A3 Cutting element and method of orienting
11/24/2011	WO2011046960A3 Downhole tool
11/24/2011	US20110286810 Polycrystalline diamond abrasive elements
11/24/2011	US20110284294 Rotational drill bits and drilling apparatuses including the same
11/24/2011	US20110284293 Rolling cutter bit design
11/24/2011	US20110284291 Tension/Collar/Reamer Assemblies And Methods
11/24/2011	US20110284233 Hydraulic Actuation of a Downhole Tool Assembly
11/24/2011	CA2800138A1 Hydraulic actuation of a downhole tool assembly
11/24/2011	CA2799911A1 Methods of forming at least a portion of earth-boring tools, and articles formed by such methods
11/24/2011	CA2799906A1 Methods of forming at least a portion of earth-boring tools, and articles formed by such methods
11/23/2011	EP2387650A1 Drill bit for a down-the-hole drill
11/23/2011	EP2126272B1 Hardfacing around ball loading hole for earth-boring bit
11/23/2011	EP2122112B1 Drilling bit having a cutting element co-sintered with a cone structure
11/23/2011	EP2118431B1 Rotary drag bit
11/23/2011	CN202047753U Hard alloy gear of drill for mining
11/23/2011	CN202047752U Drill bit of impact drill
11/23/2011	CN202047751U Percussion drilling tool
11/23/2011	CN102257239A Pilot reamer with composite framework
11/23/2011	CN102251746A Drill bit and sampling device
11/23/2011	CN102251744A Annular patio drilling machine
11/23/2011	CN102251518A Rotary pump perforating piling machine
11/22/2011	US8061457 Chamfered pointed enhanced diamond insert
11/22/2011	US8061456 Chamfered edge gage cutters and drill bits so equipped
11/22/2011	US8061455 Drill bit with adjustable cutters
11/22/2011	US8061454 Ultra-hard and metallic constructions comprising improved braze joint
11/22/2011	US8061453 Drill bit with asymmetric gage pad configuration
11/22/2011	US8061452 Cutting element apparatuses, drill bits including same, methods of cutting, and methods of rotating a cutting element
11/22/2011	CA2660196C Pdc drill bit using optimized side rake angle
11/17/2011	WO2011141898A1 Polycrystalline diamond
11/17/2011	US20110278075 Impregnated rotary bit
11/17/2011	US20110278074 Polycrystalline diamond
11/17/2011	US20110278073 Drill bit
11/17/2011	US20110278072 Central Cutting Region of a Drilling Head Assembly
11/17/2011	US20110278071 Apparatus for rotary mining
11/17/2011	US20110278069 Method and apparatus for down-the-hole drilling
11/17/2011	DE202011051653U1 Werkzeughalter sowie Werkzeugträger und Bohrwerkzeug für eine Bohrkrone Tool holder and tool holder and drill for a drill bit
11/17/2011	DE102010034412B3 Rolling-drilling fixture for drilling large diameter holes into foundations for building of home, has eccentric body comprising channel unit connecting face region with cavity to guide dirt particles from region into cavity
11/17/2011	CA2799305A1 Polycrystalline diamond
11/16/2011	CN202039777U Internal spiral nozzle with diversion trench
11/16/2011	CN202039776U Composite sealing ring of rotating shaft
11/16/2011	CN202039771U Long-spiral grouting and guncreting multifunctional drilling tool
11/16/2011	CN202039769U Crushing mechanism with air inlet pipe
11/15/2011	US8057775 Polycrystalline diamond materials, methods of fabricating same, and applications using same
11/15/2011	US8056652 Barrier coated granules for improved hardfacing material using atomic layer deposition
11/15/2011	US8056651 Adaptive control concept for hybrid PDC/roller cone bits
11/15/2011	US8056650 Thermally stable ultra-hard material compact construction
11/15/2011	US8056649 Apparatus and methods for drilling wellbores that utilize a detachable reamer
11/15/2011	CA2568909C Reaming and stabilisation tool for use in a borehole
11/10/2011	WO2011139903A2 Cutting elements, earth-boring tools, and methods of forming such cutting elements and tools
11/10/2011	WO2011139760A2 Methods of forming polycrystalline compacts
11/10/2011	WO2011139697A2 Pdc sensing element fabrication process and tool
11/10/2011	WO2011139696A2 At-bit evaluation of formation parameters and drilling parameters
11/10/2011	WO2011139668A2 Polycrystalline diamond compacts, cutting elements and earth-boring tools including such compacts, and methods of forming such compacts and earth-boring tools
11/10/2011	WO2011139519A2 Earth-boring tools and methods of forming earth-boring tools
11/10/2011	WO2011139497A1 Method and apparatus to adjust weight-on-bit/torque-on-bit sensor bias
11/10/2011	WO2011137494A1 Undercutting tool
11/10/2011	WO2011097575A3 Shaped cutting elements on drill bits and other earth-boring tools, and methods of forming same
11/10/2011	CA2848298A1 Method of forming a rotary drill bit
11/10/2011	CA2800516A1 At-bit evaluation of formation parameters and drilling parameters
11/10/2011	CA2798369A1 Method and apparatus to adjust weight-on-bit/torque-on-bit sensor bias
11/10/2011	CA2797744A1 Undercutting tool
11/09/2011	EP2384849A1 Hollow drill and method for its manufacture
11/09/2011	EP2384387A1 Methods, systems, and tool assemblies for distributing weight-on-bit between a pilot earth-boring rotary drill bit and a reamer device
11/09/2011	CN202031586U Internal member of horizontal orientation sampling drilling tool
11/09/2011	CN202031486U Hard alloy mining bit with waved cutting edge
11/09/2011	CN202031485U Rotary drilling rig and rotary drilling machine
11/09/2011	CN202031484U Special reversed T-shaped depth pile drill
11/09/2011	CN202031483U Drilling machine and cylinder drilling tool thereof
11/09/2011	CN202031482U Square piston type anchoring and chambering drilling rig
11/09/2011	CN202031080U Hole drilling, disc rotationally-expanding and hole cleaning all-in-one machine
11/09/2011	CN102235152A Hole-forming construction method for bored pile on high-strength stabilized soil layer
11/09/2011	CN101701508B Self-sharpening cross drill for geological exploration
11/08/2011	US8051929 Core drill bits with enclosed fluid slots
11/08/2011	US8051928 Downhole assembly and cutter assembly
11/08/2011	US8051923 Rotary drill bits with gage pads having improved steerability and reduced wear
11/08/2011	CA2522568C Drill bit
11/05/2011	CA2702105A1 Borehole reamer
11/03/2011	WO2011136839A1 Bolt on drive assembly for a core drill with high strength spoked reinforcer
11/03/2011	WO2011136830A1 Vibrating tool
11/03/2011	WO2011136714A1 Drill bit for percussive rock drilling
11/03/2011	WO2011080685A3 Method of treating a diamond containing body
11/03/2011	WO2009147072A3 Drill bit and method for inserting, expanding, collapsing, and retrieving drill bit
11/03/2011	US20110266072 Drill Bit With Tiered Cutters
11/03/2011	US20110266071 Rotary Drill Bits with Optimized Fluid Flow Characteristics
11/03/2011	US20110266070 Cutting elements, earth-boring tools, and methods of forming such cutting elements and tools
11/03/2011	US20110266069 Casing shoes including cutting elements, cutting elements for earth-boring tool, and related methods
11/03/2011	US20110266068 Earth-boring tools and methods of forming earth-boring tools

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