| Patents for E21B 10 - Drill bits (19,464) |
|---|
| 06/05/2013 | CN103132913A Enlarging hole device capable of identifying whether recycling tooth wheel is used or not |
| 06/05/2013 | CN103132912A Wide insert cone bit |
| 06/05/2013 | CN103132911A Disk-shaped insert roller bit |
| 06/05/2013 | CN103132910A Drilling tool body |
| 06/05/2013 | CN103132909A Coal mine gas extraction hole drill |
| 06/05/2013 | CN103132907A Cone down-the-hole mixing drilling tool and cone down-the-hole drill including the same |
| 06/05/2013 | CN103132087A Technology for controlling hardness distribution of material for 23CrNi3Mo drill tool |
| 06/05/2013 | CN102337840B Self-guiding water pressure-switching cutting type broaching drill bit |
| 06/05/2013 | CN102268966B Hard rock crushing drill bit and method for crushing hard rock |
| 06/05/2013 | CN102155164B Thrust auxiliary reamer bit |
| 06/05/2013 | CN101967956B Tricone bit used for high-rotation speed drilling |
| 06/05/2013 | CN101956529B Bearing seal of single-sealing ring cone bit |
| 06/04/2013 | US8453767 Angular offset PDC cutting structures |
| 06/04/2013 | US8453763 Expandable earth-boring wellbore reamers and related methods |
| 05/30/2013 | WO2013078161A1 Rolling cutter placement on pdc bits |
| 05/30/2013 | WO2013022733A3 Compositions, methods of coating wellbore tools with such compositions, and wellbore tools coated with such compositions |
| 05/30/2013 | US20130133957 Shear cutter with improved wear resistance of wc-co substrate |
| 05/30/2013 | US20130133956 Reverse circulation bit assembly |
| 05/30/2013 | US20130133955 Drill bit with seal having spheres in a matrix seal material |
| 05/30/2013 | US20130133954 Roller reamer compound wedge retention |
| 05/30/2013 | US20130133951 Erosion Resistant Hard Composite Materials |
| 05/30/2013 | US20130133949 Extendable cutting tools for use in a wellbore |
| 05/29/2013 | EP2597249A1 Drilling device and method for creating a vertical borehole |
| 05/29/2013 | EP2596201A2 Polycrystalline diamond cutting element and method of using same |
| 05/29/2013 | EP2596199A2 Anchoring device |
| 05/29/2013 | EP2596198A1 Wellbore tool with exchangable blades |
| 05/29/2013 | DE102011087096A1 Drilling tool of construction machine used in pile foundation of building, has drilling heads whose rotation axis is transverse to feed direction and is retained position along feed direction |
| 05/29/2013 | CN202954743U Down-the-hole drill bit |
| 05/29/2013 | CN202954742U Spike bit |
| 05/29/2013 | CN202954741U Concentric casing drilling tool |
| 05/29/2013 | CN202954740U Drill bit of rotary excavator |
| 05/29/2013 | CN103124800A 多晶金刚石 Polycrystalline diamond |
| 05/28/2013 | US8448727 Rotary drill bit employing polycrystalline diamond cutting elements |
| 05/28/2013 | US8448726 Drill bits with bearing elements for reducing exposure of cutters |
| 05/28/2013 | US8448725 Impact resistant PDC drill bit |
| 05/28/2013 | US8448724 Hole opener with hybrid reaming section |
| 05/28/2013 | US8448723 Seal assembly for drill bit |
| 05/28/2013 | US8448721 Directional drilling system |
| 05/28/2013 | CA2695520C Earth-boring tools having particle-matrix composite bodies, methods for welding particle-matrix composite bodies and methods for repairing particle-matrix composite bodies |
| 05/23/2013 | WO2013074898A1 Rolling cutter with side retention |
| 05/23/2013 | WO2013074788A1 Hybrid drill bits having increased drilling efficiency |
| 05/23/2013 | WO2013074346A1 Downhole tools including anomalous strengthening materials and related methods |
| 05/23/2013 | WO2013071360A1 Hammer bit shank enhancements |
| 05/23/2013 | US20130126247 Composite drill bit |
| 05/23/2013 | US20130126246 Scraping-wheel drill bit |
| 05/23/2013 | US20130126244 Ball and socket roller reamer and keyseat wiper |
| 05/23/2013 | CA2855947A1 Hybrid drill bits having increased drilling efficiency |
| 05/22/2013 | EP2594729A1 Composite drill bit |
| 05/22/2013 | EP2594728A1 Rotary drill bit |
| 05/22/2013 | EP2593630A1 Alloys with low coefficient of thermal expansion as pdc catalysts and binders |
| 05/22/2013 | CN202946024U 变径钻头 Adjustable drill |
| 05/22/2013 | CN202946023U Drilling head with anti-hole-blocking function |
| 05/22/2013 | CN202946022U Double-bottom-drum type spiral drill bit |
| 05/22/2013 | CN202946021U 数字智能合金钻头 Digital Smart alloy drill |
| 05/22/2013 | CN202946020U Cone bit bearing assembly with monometallic sealing system and floating bearing system combined |
| 05/22/2013 | CN202946018U Grinding material jet bit |
| 05/22/2013 | CN103114813A Diamond core bit |
| 05/22/2013 | CN103114812A Diamond compact annular concentric simultaneous casing drilling bit and working method thereof |
| 05/22/2013 | CN103114811A Insert cone bit |
| 05/22/2013 | CN103114805A Drilling and reaming dual-purpose drilling tool and construction method thereof |
| 05/22/2013 | CN101772616B Excavation device |
| 05/22/2013 | CN101675207B Release device |
| 05/22/2013 | CN101052779B Device for a drilling tool |
| 05/21/2013 | US8443919 Semi-sealed blast hole bit and method for drilling |
| 05/21/2013 | US8443918 Excavation and compaction equipment for the construction of screw piles |
| 05/21/2013 | US8443875 Down hole tool with adjustable fluid viscosity |
| 05/16/2013 | WO2013070609A1 Apparatus and process for drilling a borehole in a subterranean formation |
| 05/16/2013 | WO2013070479A1 Drilling apparatus including milling devices configured to rotate at different speeds |
| 05/16/2013 | WO2013070419A1 Enhanced electrolytic degradation of controlled electrolytic material |
| 05/16/2013 | WO2013070200A1 Drill bit for performing electromagnetic measurements in a subterranean formation |
| 05/16/2013 | WO2013068469A1 Method of making cutter elements |
| 05/16/2013 | WO2013068262A1 Drill bit for rock drilling tool, and rock drilling tool |
| 05/16/2013 | WO2013043556A3 Methods of forming polycrystalline diamond compacts and resulting polycrystalline diamond compacts and cutting elements |
| 05/16/2013 | WO2013019410A3 Method of making a powder metal compact |
| 05/16/2013 | US20130118813 Cutting elements having laterally elongated shapes for use with earth-boring tools, earth-boring tools including such cutting elements, and related methods |
| 05/16/2013 | CA2854812A1 Apparatus and process for drilling a borehole in a subterranean formation |
| 05/16/2013 | CA2854087A1 Drill bit for performing electromagnetic measurements in a subterranean formation |
| 05/16/2013 | CA2853873A1 Drill bit for rock drilling tool, and rock drilling tool |
| 05/15/2013 | EP2592216A1 Drill bit for rock drilling tool, and rock drilling tool |
| 05/15/2013 | EP2592215A1 Laser drilling device |
| 05/15/2013 | EP2591147A1 Hard face structure, body comprising same and method for making same |
| 05/15/2013 | CN202937192U Nozzle drilling bit used for welling drilling of coal bed gas and shale gas reservoir stratum |
| 05/15/2013 | CN202937191U Drilling head suitable for pile foundation construction drilling machine |
| 05/15/2013 | CN202937190U Cutting pick for spiral surfacing protected drilling rib |
| 05/15/2013 | CN202937189U Rock drill |
| 05/15/2013 | CN202937188U Building construction drill |
| 05/15/2013 | CN202937183U Stone historical relic reinforcement lead hole drilling machine |
| 05/15/2013 | CN202937182U Large-power high-speed high-efficiency turbine drilling tool stator-and-rotor combination part |
| 05/15/2013 | CN202937179U Pile hole circular cutting system |
| 05/15/2013 | CN103104198A Drill bit of piling device |
| 05/15/2013 | CN103104197A Diameter-variable drill bit |
| 05/15/2013 | CN102199992B A spinning-reaming composite drill |
| 05/15/2013 | CN102155165B Impact drilling tool |
| 05/15/2013 | CN101611210B Intermetallic aluminide polycrystalline diamond compact (pdc) cutting elements |
| 05/14/2013 | US8439137 Superabrasive compact including at least one braze layer thereon, in-process drill bit assembly including same, and method of manufacture |
| 05/14/2013 | US8439136 Drill bit for earth boring |
| 05/14/2013 | US8439135 Down-the-hole drill hammer having an extendable drill bit assembly |
| 05/14/2013 | US8439134 Method and apparatus for a true geometry, durable rotating drill bit |
| 05/14/2013 | US8439132 Microtunnelling system and apparatus |
| 05/10/2013 | WO2013066624A1 Earth boring cutting inserts and earth boring bits including the same |