| Patents for E21B 10 - Drill bits (19,464) |
|---|
| 10/04/2006 | CN2823529Y Hard alloy plate for drill bit |
| 10/04/2006 | CN2823528Y Integrated dill bit with diamond bit |
| 10/04/2006 | CN2823527Y Combined mine drill bit |
| 10/04/2006 | CN2823526Y Double piece combined bull bit |
| 10/04/2006 | CN2823328Y Impacting pipe for well spot holing |
| 10/03/2006 | US7114584 Hollow auger head assembly |
| 10/03/2006 | US7114583 Tool and method for drilling, reaming, and cutting |
| 10/03/2006 | CA2410122C Hardfacing composition for rock bits |
| 10/03/2006 | CA2406083C Drillable drill bit nozzle |
| 10/03/2006 | CA2326489C Drillstring with stabilisers for re-entering a primary wellbore |
| 10/03/2006 | CA2312272C Bi-centered drill bit having improved drilling stability, mud hydraulics and resistance to cutter damage |
| 09/28/2006 | US20060213693 Rotary drill bit shank, rotary drill bits so equipped, and methods of manufacture |
| 09/28/2006 | US20060213692 Hydro-lifter rock bit with PDC inserts |
| 09/28/2006 | US20060213690 Rock drilling machine and axial bearing |
| 09/28/2006 | US20060213689 Method and apparatus for introducing elongate members into the ground |
| 09/28/2006 | US20060213128 Methods of maximizing retention of superabrasive particles in a metal matrix |
| 09/28/2006 | DE102006014181A1 Drill head for drilling into the ground comprises a base body having intersecting points for fixing nozzle bodies and having a fluid supply |
| 09/27/2006 | EP1561002A4 An improved rotary roller reamer |
| 09/27/2006 | CN2821161Y Hole enlarger |
| 09/27/2006 | CN2821135Y Hard alloy sheet for mine drill bit |
| 09/27/2006 | CN2821134Y Multiple curve surface hard alloy sheet for alloy bit |
| 09/27/2006 | CN2821133Y Novel drill bit |
| 09/27/2006 | CN2821132Y Irregular drill sheet for rock drilling |
| 09/27/2006 | CN2821131Y Irregular drill sheet for rock drilling |
| 09/27/2006 | CN1839243A Make-up control system for tube |
| 09/26/2006 | US7111695 Pneumatic rock-boring device and method for horizontal drilling using compressed air and drilling medium |
| 09/26/2006 | US7111694 Fixed blade fixed cutter hole opener |
| 09/21/2006 | WO2006099629A1 Bit leg and cone hardfacing for earth-boring bit |
| 09/21/2006 | WO2006097710A1 Multi-function downhole tool |
| 09/21/2006 | US20060207803 Bit leg and cone hardfacing for earth-boring bit |
| 09/21/2006 | US20060207802 Thermally stable polycrystalline diamond cutting elements and bits incorporating the same |
| 09/21/2006 | US20060207800 Rotary percussive drilling device |
| 09/21/2006 | US20060207797 Selectively actuatable expandable underreamer/stabilizer |
| 09/20/2006 | EP1702134A1 Drilling tool |
| 09/20/2006 | EP1656492A4 Downhole hammer drill |
| 09/20/2006 | CN2818760Y Anti-block PDC drilling bit of external water trough |
| 09/20/2006 | CN2818550Y Drilling bit of deep submerged agitation pile |
| 09/20/2006 | CN2818549Y Drilling bit of high-pressure spiral jet pile |
| 09/19/2006 | US7108084 Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells |
| 09/19/2006 | US7108082 Hole reaming apparatus and method |
| 09/19/2006 | US7108064 Milling tool insert and method of use |
| 09/14/2006 | WO2006096495A2 Modular kerfing drill bit |
| 09/14/2006 | US20060201718 High-strength/high toughness alloy steel drill bit blank |
| 09/14/2006 | US20060201716 Gripper assembly for downhole tools |
| 09/14/2006 | US20060201712 Cutter for maintaining edge sharpness |
| 09/14/2006 | US20060201711 Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells |
| 09/14/2006 | DE20321302U1 Impact tool for e.g. hammer mill reducing metal or stone has highly wear-resistant molding cast into main body of ductile steel alloy |
| 09/13/2006 | EP1525370B1 Device for advancing drillings in the ground |
| 09/13/2006 | CN2816324Y Air hammer drill-bit with diameter assuring and inclination-correcting function |
| 09/13/2006 | CN1833091A A drill bit, a drill rod and a self drilling roof bolt |
| 09/13/2006 | CN1831290A Double-step cutting structure bit |
| 09/13/2006 | CN1274940C Rock drilling tool |
| 09/12/2006 | US7104344 Percussion drilling head |
| 09/12/2006 | CA2426414C Load responsive hydrodynamic bearing |
| 09/08/2006 | WO2006060608A3 Micropore engagement surfaces for earth boring bit |
| 09/07/2006 | US20060196699 Modular kerfing drill bit |
| 09/07/2006 | US20060196697 Stabilizing system and methods for a drill bit |
| 09/07/2006 | US20060196696 Electrically sequenced tractor |
| 09/07/2006 | US20060196694 Electrically sequenced tractor |
| 09/06/2006 | EP1697661A2 Ion-beam assisted deposition of inorganic coatings for elastomeric seal wear resistance improvement |
| 09/06/2006 | EP1490577B1 Grease filling arrangement in a cutter for a boring head |
| 09/06/2006 | EP1373676B1 An apparatus for retrieving metal debris from a well bore |
| 09/06/2006 | EP1356185B1 A method and drill bit for reducing the cuttings size to a predetermined maximum size |
| 09/06/2006 | CN2813872Y Drilling bit steel body |
| 09/06/2006 | CN2813871Y Semi-screw drilling rod structure |
| 09/06/2006 | CN1829850A Earth penetrating rotary drill bit with helical ports |
| 09/06/2006 | CN1828007A Blade PDC bit |
| 09/06/2006 | CN1827828A Vacuum heat treatment method for hard alloy for drilling |
| 09/06/2006 | CN1273717C Tool, device, and method for drilling |
| 09/06/2006 | CN1273716C Roller bit with roller pull-off prevention alarm apparatus |
| 09/05/2006 | US7100714 Mine ceiling drill bit and blade |
| 09/05/2006 | US7100713 Expandable apparatus for drift and reaming borehole |
| 09/05/2006 | US7100712 Method for hardfacing roller cone drill bit legs |
| 09/05/2006 | US7100711 Single cone rock bit having inserts adapted to maintain hole gage during drilling |
| 09/05/2006 | US7100710 Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells |
| 09/05/2006 | US7100698 Make-up control system for tubulars |
| 09/05/2006 | CA2367608C Method and apparatus for accurate milling of windows in well casings |
| 09/05/2006 | CA2276474C Cutting element with canted design for improved braze contact area |
| 09/03/2006 | CA2786820A1 Fixed cutter drill bit for abrasive applications |
| 09/03/2006 | CA2538545A1 Fixed cutter drill bit for abrasive applications |
| 08/31/2006 | WO2006091641A1 Drilling tool equipped with improved cutting element layout to reduce cutter damage through formation changes, methods of design thereof and drilling therewith |
| 08/31/2006 | US20060191723 Thermally stable polycrystalline diamond materials, cutting elements incorporating the same and bits incorporating such cutting elements |
| 08/31/2006 | US20060191722 Ultrahard composite constructions |
| 08/31/2006 | US20060191721 Roller cutter |
| 08/30/2006 | EP1695781A1 Diamond core drill |
| 08/30/2006 | EP1694939A1 Rock drill bit |
| 08/30/2006 | CN2811549Y Downhole milling and drilling tools |
| 08/30/2006 | CN2811539Y Diameter changeable drill bit |
| 08/30/2006 | CN2811538Y Metal connection lining and hard alloy drill bit employing same |
| 08/30/2006 | CN2811537Y Drilling tool without waste discharge for long auger boring machine |
| 08/30/2006 | CN2810906Y Impact drill head |
| 08/30/2006 | CN1826454A Downhole hammer drill |
| 08/29/2006 | US7097551 Cutting tools with two-slope profile |
| 08/29/2006 | US7096982 Drill shoe |
| 08/29/2006 | US7096981 Alternating inclinations of compacts for drill bit |
| 08/29/2006 | US7096978 Drill bits with reduced exposure of cutters |
| 08/29/2006 | CA2337703C An improved coring bit and method for obtaining a material core sample |
| 08/29/2006 | CA2243938C Rock bit cutter retainer |
| 08/25/2006 | CA2537726A1 Ultrahard composite constructions |
| 08/24/2006 | WO2006072761A3 Downhole tool |