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)
08/2010
08/10/2010US7770672 Layered hardfacing, durable hardfacing for drill bits
08/10/2010US7770671 Nozzle having a spray pattern for use with an earth boring drill bit
08/10/2010US7770670 Apparatus for rotary mining
08/10/2010CA2584928C Drill bit having diamond impregnated inserts primary cutting structure
08/05/2010WO2010088504A1 Brazing methods for pdc cutters
08/05/2010WO2010088489A1 Methods, systems, and tool assemblies for distributing weight-on-bit between a pilot earth-boring rotary drill bit and a reamer device
08/05/2010WO2010088480A2 Earth-boring particle-matrix rotary drill bit and method of making the same
08/05/2010WO2010088339A2 Hole enlargement drilling device and methods for using same
08/05/2010WO2010088233A2 Earth boring tools and bodies of such tools including nozzle recesses, and methods of forming same
08/05/2010WO2010088231A2 Expandable stabilizer with roller reamer elements
08/05/2010WO2010087944A1 Process and apparatus for subterranean drilling
08/05/2010WO2010086576A1 A drill bit assembly
08/05/2010WO2010085892A1 Cutting structure for casing drilling underreamer
08/05/2010WO2010085880A1 Drill bit
08/05/2010WO2010053905A3 Apparatus and method for controlling fluid flow in a rotary drill bit
08/05/2010US20100194057 Rock bit having a seal gland with a conical sealing surface
08/05/2010US20100193255 Earth-boring metal matrix rotary drill bit
08/05/2010US20100193254 Matrix Drill Bit with Dual Surface Compositions and Methods of Manufacture
08/05/2010US20100193253 Earth-boring tools and bodies of such tools including nozzle recesses, and methods of forming same
08/05/2010US20100193252 Cast cones and other components for earth-boring tools and related methods
08/05/2010US20100193251 Rock bit having a seal gland with a conical sealing surface
08/05/2010US20100193250 Cutting Structure for Casing Drilling Underreamer
08/05/2010US20100193248 Methods, systems, and tool assemblies for distributing weight between an earth-boring rotary drill bit and a reamer device
08/05/2010US20100192475 Method of making an earth-boring metal matrix rotary drill bit
08/05/2010US20100192473 Thermally stable polycrystalline diamond materials, cutting elements incorporating the same and bits incorporating such cutting elements
08/05/2010CA2837443A1 Drill bit
08/05/2010CA2750159A1 Expandable stabilizer with roller reamer elements
08/05/2010CA2748711A1 Drill bit
08/04/2010EP2212508A2 Minimizing stick-slip while drilling
08/04/2010EP2212507A1 Method and apparatus for continuous formation sampling and analysis during wellbore drilling
08/04/2010CN101793126A Drill blank, drill and method for manufacturing the same
08/04/2010CN101793125A Horizontal directional drilling pipeline rock strata crossing composite reaming construction method
08/04/2010CN101793124A Bit drilling engineering method
08/03/2010US7766103 Drill bit and a single pass drilling apparatus
08/03/2010US7766102 Downhole assembly and cutter assembly
08/03/2010US7766101 System and method for making drilling parameter and or formation evaluation measurements during casing drilling
08/03/2010CA2485471C Method and probe for measuring hydraulic conductivity of soil
07/2010
07/30/2010CA2690534A1 Matrix drill bit with dual surface compositions and methods of manufacture
07/29/2010WO2010085728A1 Roof drill bit, roof drill bit body and hard cutting insert for roof drill bit
07/29/2010WO2010085529A1 Drilling assemblies including one of a counter rotating drill bit and a counter rotating reamer, methods of drilling, and methods of forming drilling assemblies
07/29/2010WO2010084472A1 Abrasive inserts
07/29/2010WO2010084238A1 Method and apparatus for down-the-hole drilling
07/29/2010WO2010056476A3 Carburized monotungsten and ditungsten carbide eutectic particles, materials and earth-boring tools including such particles, and methods of forming such particles, materials, and tools
07/29/2010WO2010045164A3 Drill bit with continuously sharp edge cutting elements
07/29/2010US20100187020 Brazing methods for pdc cutters
07/29/2010US20100187019 Roof drill bit, roof drill bit body and hard cutting insert for roof drill bit
07/29/2010US20100187018 Earth-Boring Particle-Matrix Rotary Drill Bit and Method of Making the Same
07/29/2010US20100187011 Cutting structures for casing component drillout and earth-boring drill bits including same
07/29/2010US20100187010 Process and apparatus for subterranean drilling
07/29/2010CA2737279A1 Method and apparatus for down-the-hole drilling
07/28/2010EP2209964A1 Percussive drill bit for rock drilling and method for the manufacture of such drill bit
07/28/2010EP2089604B1 Earth-boring rotary drill bits including bit bodies comprising reinforced titanium or titanium-based alloy matrix materials, and methods for forming such bits
07/28/2010EP2029855B1 Pcd cutters with enhanced working surfaces adjacent a cavity
07/28/2010CN201535137U Expanding drill for well drilling
07/28/2010CN201535136U 单o形橡胶圈浮动金属环组合密封高速轴承的牙轮钻头 Single rubber o-ring seal floating metal ring combination of high speed bearing cone bit
07/28/2010CN101787857A cone reamer
07/28/2010CN101787509A Production method of nano-spray compensation matrix-type PDC drill bit
07/28/2010CN101787479A Hard alloy with net-shaped structure and method for preparing same
07/27/2010US7762359 Cutter assembly including rotatable cutting element and drill bit using same
07/27/2010US7762355 Rotary drag bit and methods therefor
07/22/2010WO2010083351A2 Methods of forming polycrystalline diamond cutting elements, cutting elements so formed and drill bits so equipped
07/22/2010WO2010083266A2 Impregnated drill bit with diamond pins
07/22/2010WO2010083265A2 Roller cones having non integral cutting structures, drill bits including such cones, and methods of forming same
07/22/2010WO2010083224A1 Rotary drill bits with optimized fluid flow characteristics
07/22/2010WO2010082889A1 Drill bit for a down-the-hole drill
07/22/2010WO2010053736A3 High pressure sintering with carbon additives
07/22/2010WO2010048116A3 Self sharpening steel tooth cutting structure
07/22/2010WO2010033742A3 Method and apparatus for the automated application of hardfacing material to rolling cutters of earth-boring bits
07/22/2010US20100181292 Method and apparatus for automated application of hardfacing material to rolling cutters of hybrid-type earth boring drill bits, hybrid drill bits comprising such hardfaced steel-toothed cutting elements, and methods of use thereof
07/22/2010US20100181117 Methods of forming polycrystalline diamond cutting elements, cutting elements so formed and drill bits so equipped
07/22/2010US20100181116 Impregnated drill bit with diamond pins
07/22/2010US20100181115 Drilling apparatus
07/22/2010CA2750853A1 Drill bit for a down-the-hole drill
07/22/2010CA2749776A1 Methods of forming polycrystalline diamond cutting elements, cutting elements so formed and drill bits so equipped
07/22/2010CA2749482A1 Roller cones having non-integral cutting structures, drill bits including such cones, and methods of forming same
07/22/2010CA2748660A1 Rotary drill bits with optimized fluid flow characteristics
07/21/2010CN201531216U Multistage cutting block-resistant guiding control drill bit
07/21/2010CN101784747A Compliantly coupled cutting/gauge pad system
07/21/2010CN101784745A Motor bit system
07/20/2010US7757793 Thermally stable polycrystalline ultra-hard constructions
07/20/2010US7757792 Method and apparatus for selectively leaching portions of PDC cutters already mounted in drill bits
07/20/2010US7757791 Cutting elements formed from ultra hard materials having an enhanced construction
07/20/2010US7757790 Superabrasive compact with selected interface and rotary drill bit including same
07/20/2010US7757789 Drill bit and insert having bladed interface between substrate and coating
07/20/2010US7757787 Drilling and hole enlargement device
07/20/2010US7757785 Modified cutters and a method of drilling with modified cutters
07/20/2010US7757784 Drilling methods utilizing independently deployable multiple tubular strings
07/20/2010CA2550801C Drilling equipment
07/20/2010CA2458796C Drilling apparatus
07/15/2010WO2010080868A2 Cutter profile helping in stability and steerability
07/15/2010WO2010080535A1 Multi-set pdc drill bit and method
07/15/2010WO2010080477A2 Hybrid drill bit with secondary backup cutters positioned with high side rake angles
07/15/2010WO2010080476A2 Method of designing a bottom hole assembly and a bottom hole assembly
07/15/2010WO2010080380A1 Hybrid drill bit with high pilot-to journal diameter ratio
07/15/2010WO2010059457A3 Encapsulated diamond paticles, materials and impregnated diamond earth boring bits including such particles, and methods of forming such particles, materials, and bits
07/15/2010WO2010048120A3 Method and apparatus for automated application of hardfacing material to drill bits
07/15/2010WO2010011543A4 Steel tooth bit with scooped teeth profile
07/15/2010US20100175930 Drill Bit With A Hybrid Cutter Profile
07/15/2010US20100175929 Cutter profile helping in stability and steerability
07/15/2010US20100175928 Hammer bit
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