| Patents for E21B 10 - Drill bits (19,464) |
|---|
| 02/22/2007 | US20070039760 Drill bit and system for drilling a borehole |
| 02/21/2007 | EP1754855A1 Tool, in particular for a tunnel boring machine |
| 02/21/2007 | EP1354118B1 Backreamer |
| 02/21/2007 | CN2871796Y Sliding-block bore bit |
| 02/21/2007 | CN2871795Y Hard-alloy oblique jetting nozzle |
| 02/21/2007 | CN2871794Y Hard alloy arc sheet for transverse bore bit |
| 02/21/2007 | CN2871793Y Double-blade sharp borebit |
| 02/21/2007 | CN2871792Y Bore bit against seizing |
| 02/21/2007 | CN2871791Y Borehole expander |
| 02/21/2007 | CN2871790Y Gear-wheel bore bit with reinforing-bar diameter-protecting structure |
| 02/21/2007 | CN1916356A Method for raising wear-resistance of by-pass valve in screw motive drilling tool |
| 02/21/2007 | CN1301188C Self sharpening polycrystalline diamond compact with high impact resistance |
| 02/20/2007 | US7178609 Window mill and drill bit |
| 02/20/2007 | CA2425802C Single cone rock bit having inserts adapted to maintain hole gage during drilling |
| 02/20/2007 | CA2396692C Dual dynamic rotary seal |
| 02/20/2007 | CA2365095C Multi-stage diffuser nozzle |
| 02/20/2007 | CA2244457C Drill bit with ridge cutting cutter elements |
| 02/15/2007 | WO2007019581A2 Weldable ultrahard materials and associated methods of manufacture |
| 02/15/2007 | WO2007019483A1 Methods and systems for designing and/or selecting drilling equipment using predictions of rotary drill bit walk |
| 02/15/2007 | WO2007019472A1 Methods and systems for design and/or selection of drilling equipment based on wellbore drilling simulations |
| 02/15/2007 | WO2007019471A1 Methods and systems for designing and/or selecting drilling equipment with desired drill bit steerability |
| 02/15/2007 | WO2007017651A1 Underreamer having radially extendable members |
| 02/15/2007 | US20070034416 Weldable ultrahard materials and associated methods of manufacture |
| 02/15/2007 | US20070034415 Low projection inserts for rock bits |
| 02/15/2007 | US20070034414 Rolling Cone Drill Bit Having Cutter Elements Positioned in a Plurality of Differing Radial Positions |
| 02/15/2007 | US20070034413 Bearing assembly for a drill bit |
| 02/15/2007 | US20070034412 Latchable reaming bit |
| 02/15/2007 | US20070034411 Rolling cone drill bit having non-circumferentially arranged cutter elements |
| 02/15/2007 | CA2625012A1 Methods and systems for design and/or selection of drilling equipment based on wellbore drilling simulations |
| 02/15/2007 | CA2625009A1 Methods and systems for designing and/or selecting drilling equipment using predictions of rotary drill bit walk |
| 02/15/2007 | CA2624106A1 Methods and systems for designing and/or selecting drilling equipment with desired drill bit steerability |
| 02/14/2007 | EP1752583A2 Trench wall cutting apparatus and method for building a diaphragm wall in the ground |
| 02/14/2007 | EP1751391A2 Superabrasive particle synthesis with controlled placement of crystalline seeds |
| 02/14/2007 | EP1664476A4 Rotary roller reamer |
| 02/14/2007 | CN2869277Y Die-cut tooth drill bit |
| 02/14/2007 | CN2869276Y Reverse well-expanding device |
| 02/14/2007 | CN1914403A Anti-tracking earth boring bit with selected varied pitch for overbreak optimization and vibration reduction |
| 02/13/2007 | CA2343987C Directional flow nozzle retention body |
| 02/13/2007 | CA2300593C Rock bit nozzle and retainer assembly |
| 02/13/2007 | CA2242212C Drill bit with canted gage insert |
| 02/13/2007 | CA2240023C Protected lubricant reservoir for sealed bearing earth boring drill bit |
| 02/08/2007 | US20070029116 High energy cutting elements and bits incorporating the same |
| 02/08/2007 | US20070029115 Polycrystaline diamond compact insert reaming tool |
| 02/07/2007 | CN2866788Y Synneusis diamond composite insert drill bit with secondary grade tooth structure |
| 02/07/2007 | CN1298963C System and method for lining a section of a wellbore |
| 02/06/2007 | US7172025 System for lining a section of a wellbore |
| 02/06/2007 | CA2223662C Method for determining drilling bit wear |
| 02/05/2007 | CA2556040A1 Stress balanced cutting structure |
| 02/03/2007 | CA2551939A1 High energy cutting elements and bits incorporating the same |
| 02/01/2007 | WO2007012858A1 Steerable drilling system |
| 02/01/2007 | US20070023207 Auger with a movable gouge for making a boreholes |
| 02/01/2007 | US20070023206 Thermally stable diamond cutting elements in roller cone drill bits |
| 01/31/2007 | EP1747344A1 Enlarging and stabilising tool for a borehole and method for the use thereof |
| 01/31/2007 | CN1904306A Matrix drill bits and method of manufacture |
| 01/30/2007 | US7168512 Cutting insert and milling cutter with such a cutting insert |
| 01/30/2007 | US7168511 Rotary drill bit having cutting insert with a notch |
| 01/30/2007 | US7168509 Percussive reamer and method of use thereof |
| 01/30/2007 | US7168504 Rotary hammer including breather port |
| 01/30/2007 | US7168147 Method for manufacturing a drilling tool with an elastomer seal having graded properties |
| 01/30/2007 | CA2426176C Single-cone rock bit having cutting structure adapted to improve hole cleaning, and to reduce tracking and bit balling |
| 01/30/2007 | CA2393420C Reamer shoe |
| 01/26/2007 | CA2543514A1 Retainer sleeve for a rotary bit |
| 01/25/2007 | WO2007011686A1 System5 method, and apparatus for reducing residual stress in as-welded roller cone bit ball plug welds |
| 01/25/2007 | WO2006036525A3 Rotary drill bit having cutting insert with a notch |
| 01/25/2007 | US20070017710 Secondary cutting element for drill bit |
| 01/25/2007 | US20070017709 Split cone bit |
| 01/25/2007 | US20070017708 Expandable reamer apparatus for enlarging boreholes while drilling and methods of use |
| 01/25/2007 | US20070017707 One-step directional coring or drilling system |
| 01/23/2007 | US7165636 Cutting element with canted interface surface and bit body incorporating the same |
| 01/23/2007 | CA2387295C Multiple cutter rotary hammer bit |
| 01/23/2007 | CA2351849C Downhole tool with extendable members |
| 01/23/2007 | CA2294540C Drill bit nozzle and method of attachment |
| 01/23/2007 | CA2292114C Single energizer face seal for rock bits with floating journal bearings |
| 01/23/2007 | CA2288923C High offset bits with super-abrasive cutters |
| 01/23/2007 | CA2254170C Sealed bearing drill bit with dual-seal configuration |
| 01/18/2007 | WO2007008085A1 System and method for dynamic sealing around a drill stem |
| 01/18/2007 | DE19625509B4 Werkzeugkomponente für Schneidmeißel aus Sintercarbidsubstrat und Verwendung zur Herstellung eines Schneidmeißels Tool component for cemented carbide cutting bit out and use for producing a cutting bit |
| 01/17/2007 | CN2858925Y Big diameter pneumatic water injection drill |
| 01/17/2007 | CN1896451A Biomimetic golden-embedded diamond drilling bit and its production |
| 01/17/2007 | CN1896450A Geothermal drilling bit |
| 01/16/2007 | US7163363 Perforating drill |
| 01/16/2007 | US7163070 Drill head |
| 01/11/2007 | WO2007005717A2 Twist bit for drilling mortar and for optimizing dissipation of heat and dust created by the drilling |
| 01/11/2007 | US20070007045 Downhole hammer drill |
| 01/10/2007 | EP1740794A1 Earth-boring bits |
| 01/10/2007 | CN2856375Y Long edge variable bottom carbide sheet of alloyed bit |
| 01/09/2007 | US7159668 Centralizer |
| 01/09/2007 | US7159487 Method for making a polycrystalline diamond insert drill bit body |
| 01/09/2007 | CA2431200C Arcuate-shaped inserts for drill bits |
| 01/09/2007 | CA2391192C Rock drill bit |
| 01/04/2007 | US20070000701 Drill bit, a drill rod and a self drilling roof bolt |
| 01/04/2007 | US20070000700 Twist bit for drilling mortar and for optimizing dissipation of heat and dust created by the drilling |
| 01/04/2007 | US20070000699 Asymmetric graded composites for improved drill bits |
| 01/04/2007 | US20070000698 Graded hardfacing for drill bits |
| 01/04/2007 | US20070000694 Pneumatic rock drill |
| 01/04/2007 | DE102005016346B3 Device for measuring wear in disc cutters, especially on tunnel drilling machines, has a magnet in the wearing layer at the circumference of the disc and a sensor for measuring the magnetic field strength |
| 01/03/2007 | EP1739277A2 Graded hardfacing for drill bits |
| 01/03/2007 | EP1739201A1 Asymmetric graded composites for improved drill bits |
| 01/03/2007 | CN2854046Y Wall opening apparatus |
| 01/03/2007 | CN2854045Y Drill nozzle mounting structure |