| Patents for E21B 10 - Drill bits (19,464) |
|---|
| 02/09/2012 | US20120031671 Drill Bits With Rolling Cone Reamer Sections |
| 02/09/2012 | US20120031669 Memory Logging Drill Bit With Connectable Pulser |
| 02/09/2012 | CA2842718A1 Drill bit alloy |
| 02/09/2012 | CA2807231A1 Shaped cutting elements for earth-boring tools, earth-boring tools including such cutting elements, and related methods |
| 02/09/2012 | CA2805845A1 Pump positioned at a drill bit |
| 02/08/2012 | EP2414615A1 Methods for bonding preformed cutting tables to cutting element substrates and cutting elements formed by such processes |
| 02/08/2012 | CN202140024U 新型钢体式pdc钻头 Pdc drill new steel style |
| 02/08/2012 | CN202140023U 一种便携式钻头 A portable drill |
| 02/08/2012 | CN202140022U 锚杆扩底钻头 Belled anchor drill |
| 02/08/2012 | CN202140012U 具辅助冲击装置的冲锤结构 Impact hammer structure with an auxiliary device |
| 02/08/2012 | CN202140011U 回填夹渣土层降水井点成孔装置 Backfill sediment layer sandwiched into a hole means well point precipitation |
| 02/08/2012 | CN102345447A Casting spliced diamond composite sheet anchor rod drill bit and connecting sleeve thereof |
| 02/08/2012 | CN102345446A Drill bit of rotary drilling machine |
| 02/08/2012 | CN102345445A Drill bit for particle impact drilling technology |
| 02/08/2012 | CN102345444A Long spiral bit for foundation construction |
| 02/08/2012 | CN102345443A Patterned texturing of the seal surface for a roller cone rock bit |
| 02/08/2012 | CN102345442A Electric hole diameter expander |
| 02/08/2012 | CN101460694B 多段式冲击钻头组件 Multi-stage impact drill bit assembly |
| 02/08/2012 | CN101100929B 扩底挖斗 Belled bucket |
| 02/07/2012 | US8112258 PDC drill bit using optimized side rake angle |
| 02/07/2012 | US8109350 Polycrystalline abrasive composite cutter |
| 02/07/2012 | US8109349 Thick pointed superhard material |
| 02/07/2012 | US8109346 Drill bit supporting multiple cutting elements with multiple cutter geometries and method of assembly |
| 02/07/2012 | US8109345 System and method for drilling a borehole |
| 02/07/2012 | US8109177 Bit body formed of multiple matrix materials and method for making the same |
| 02/02/2012 | WO2011079339A3 Drill bit for the drilling, in particular percussion drilling or rotary percussion drilling, of holes in soil material or rock material |
| 02/02/2012 | US20120024609 Drilling apparatus with reduced exposure of cutters and methods of drilling |
| 02/02/2012 | US20120024608 Patterned texturing of the seal surface for a roller cone rock bit |
| 02/02/2012 | US20120024604 Fixed cutter drill bit for abrasive applications |
| 02/02/2012 | US20120023833 High Impact Resistant Tool |
| 02/01/2012 | EP2411617A1 Polycrystalline diamond cutter with high thermal conductivity |
| 02/01/2012 | EP2411616A1 Expandable multi-flute reamer with tapered pin |
| 02/01/2012 | CN202131985U 一种硬质合金镶齿牙轮钻头 One kind of carbide tipped cone bit |
| 02/01/2012 | CN202131984U 一种新型金刚石钻头 A new diamond drill |
| 02/01/2012 | CN202131983U 一种金刚石钎头 One kind of diamond drill bits |
| 02/01/2012 | CN202131982U 一种新型焊接式金刚石扩孔器 A new welded diamond reamer |
| 02/01/2012 | CN202131981U 一种轴向密封牙轮钻头 An axially sealing cone bit |
| 02/01/2012 | CN202131980U 一种带有逆止阀的牙轮钻头 A check valve with a roller cone bit |
| 02/01/2012 | CN202131979U 一种牙轮钻头的滚动轴承 One kind of cone bit Rolling |
| 02/01/2012 | CN202131978U 一种耐磨轴颈的三牙轮钻头 A wear-resistant journal tricone bit |
| 02/01/2012 | CN202131977U 打桩机冲击钻头 Impact drill hammers |
| 02/01/2012 | CN102341560A Expandable stabilizer with roller reamer elements |
| 02/01/2012 | CN102337898A Planetary primary-secondary drill bit for extra-large tunnel shield machine |
| 02/01/2012 | CN102337841A Sapphire inner-spiral pulse type spiral-complex comprehensive-drilling bit with mud diversion trench |
| 02/01/2012 | CN102337840A Self-guiding water pressure-switching cutting type broaching drill bit |
| 02/01/2012 | CN102336196A Earth core mining vehicle |
| 01/31/2012 | US8104551 Excavation tool |
| 01/31/2012 | US8104550 Methods for applying wear-resistant material to exterior surfaces of earth-boring tools and resulting structures |
| 01/31/2012 | US8104549 Activating device for a downhole tool |
| 01/31/2012 | US8104464 Brazed diamond tools and methods for making the same |
| 01/31/2012 | CA2526254C Drill bit, system, and method for drilling a borehole in an earth formation |
| 01/26/2012 | WO2012012774A2 Polycrystalline diamond cutting element and method of using same |
| 01/26/2012 | WO2012012613A1 Wellbore tool with exchangable blades |
| 01/26/2012 | WO2012012401A2 Anchoring device |
| 01/26/2012 | WO2012012392A2 Anchoring device |
| 01/26/2012 | WO2012012076A1 Continously adjusting resultant force in an excavating assembly |
| 01/26/2012 | WO2012010646A2 Superhard construction |
| 01/26/2012 | WO2011162999A3 Cutting elements for earth-boring tools, earth-boring tools including such cutting elements, and methods of forming cutting elements for earth-boring tools |
| 01/26/2012 | WO2011162986A3 Cutting elements for downhole cutting tools |
| 01/26/2012 | US20120018224 Compliantly coupled gauge pad system |
| 01/26/2012 | US20120018223 Polycrystalline diamond cutting element and method of using same |
| 01/26/2012 | US20120018220 Core sample orientation |
| 01/26/2012 | CA2809138A1 Anchoring device |
| 01/26/2012 | CA2806924A1 Polycrystalline diamond cutting element and method of using same |
| 01/26/2012 | CA2806040A1 Wellbore tool with exchangable blades |
| 01/26/2012 | CA2805873A1 Anchoring device |
| 01/25/2012 | EP2408996A2 Downhole drilling assembly |
| 01/25/2012 | EP2408993A2 Chip deflector on a blade of a downhole reamer and methods therefor |
| 01/25/2012 | CN202125269U Rotary drilling rig and drilling tool of rotary drilling rig |
| 01/25/2012 | CN202125253U Double-stage quick drill bit of phi7m 'expansion well completion' vertical shaft drill |
| 01/25/2012 | CN202125252U Slurry absorbing opening of quick drill head of shaft well drilling machine with 7m phi and adopting expansion well completion process |
| 01/25/2012 | CN202125251U Alloy bit of deep pile mixer |
| 01/25/2012 | CN202125250U Plug-in type anchor rod drill bit of diamond compact and connection sleeve of same |
| 01/25/2012 | CN202125249U Casting plug-in type diamond compact anchor rod bit and connecting sleeve thereof |
| 01/25/2012 | CN202125248U Drill head for well drill |
| 01/25/2012 | CN102333608A Polycrystalline diamond compact including a cemented tungsten carbide substrate that is substantially free of tungsten carbide grains exhibiting abnormal grain growth and applications therefor |
| 01/25/2012 | CN102330536A Lifting type diving rotary drilling rig with turbine pump |
| 01/24/2012 | US8100203 Diamond impregnated bits and method of using and manufacturing the same |
| 01/24/2012 | US8100202 Fixed cutter bit with backup cutter elements on secondary blades |
| 01/24/2012 | US8100201 Rotary drill bit |
| 01/24/2012 | US8100200 Chuck assembly for a down-hole drill |
| 01/24/2012 | US8100189 System and method for dynamic sealing of a drill string |
| 01/24/2012 | CA2639470C Drill bit |
| 01/24/2012 | CA2526881C Drill bit and system for drilling a borehole |
| 01/24/2012 | CA2504775C An improved rotary roller reamer |
| 01/19/2012 | WO2012009285A1 Alloys with low coefficient of thermal expansion as pdc catalysts and binders |
| 01/19/2012 | WO2012006968A1 Rotary drill bit |
| 01/19/2012 | WO2012006966A1 Composite drill bit |
| 01/19/2012 | WO2012006671A1 Modular drilling system |
| 01/19/2012 | WO2011123611A3 Downhole tool having a friction stirred surface region |
| 01/19/2012 | US20120012403 Cutting tool and method of manufacture |
| 01/19/2012 | US20120012402 Alloys With Low Coefficient Of Thermal Expansion As PDC Catalysts And Binders |
| 01/19/2012 | US20120012401 Polycrystalline diamond compact including a substrate having a raised interfacial surface bonded to a polycrystalline diamond table, and applications therefor |
| 01/19/2012 | US20120012399 Drill bit for a down-the-hole drill |
| 01/19/2012 | US20120012392 Small Core Generation and Analysis At-Bit as LWD Tool |
| 01/19/2012 | DE102010027544A1 Verfahren zur Herstellung der Bohrvorrichtungen vor allem für die Rohrschirmtechnik und Bohrvorrichtung A process for the preparation of the drilling devices especially for the tube screen techniques and drilling device |
| 01/19/2012 | CA2805196A1 Scraping-wheel drill bit |
| 01/19/2012 | CA2805146A1 Composite drill bit |
| 01/18/2012 | EP2407630A2 Pipe umbrella drilling method |
| 01/18/2012 | EP2406455A1 Bearing assembly for a downhole motor |