| Patents for E21B 10 - Drill bits (19,464) |
|---|
| 01/13/2011 | US20110005837 Fixed cutter drill bit for abrasive applications |
| 01/13/2011 | US20110005836 Stabilizer subs for use with expandable reamer apparatus,expandable reamer apparatus including stabilizer subs and related methods |
| 01/13/2011 | US20110005755 Downhole Casing Cutting Tool |
| 01/12/2011 | EP2271817A1 Compound engagement profile on a blade of a down-hole stabilizer and methods therefor |
| 01/12/2011 | EP2271816A1 Earth boring bit with wear resistant bearing and seal |
| 01/12/2011 | EP2271815A2 Insertable devices for retention systems, structures for attachment and methods of use |
| 01/12/2011 | EP2271814A2 Portable coring machine |
| 01/12/2011 | CN201705334U Depthometer and complete set of appliances used with drill bit and drill bit |
| 01/12/2011 | CN201705212U Diamond compact substrate with carbon potential gradient |
| 01/12/2011 | CN201705211U Novel PDC drill bit |
| 01/12/2011 | CN201705210U Anhydrous labor exploration drill |
| 01/12/2011 | CN201705209U Loose broken conglomerate stratum coring bit |
| 01/12/2011 | CN201705208U Expansive bit |
| 01/12/2011 | CN201705201U Novel dustproof drilling machine with diamond thin-wall drill |
| 01/12/2011 | CN101946059A Directional drilling system |
| 01/12/2011 | CN101942968A Drill bit for reducing pressure and raising speed |
| 01/12/2011 | CN101942967A Bit hydraulic structure capable of reducing pressure and accelerating speed and drilling bit |
| 01/12/2011 | CN101942966A Roller bit of bearing with equivalent long neck journals |
| 01/12/2011 | CN101942965A Cone bit with compound thrust device |
| 01/12/2011 | CN101942964A Cone bit with elastic floating bushing |
| 01/12/2011 | CN101139913B Underground cut-off wall interlocking type drill hammer |
| 01/11/2011 | US7866419 Diamond impregnated bits using a novel cutting structure |
| 01/11/2011 | US7866418 Rotary drill bit including polycrystalline diamond cutting elements |
| 01/11/2011 | US7866417 Self sharpening steel tooth cutting structure |
| 01/06/2011 | WO2011003051A2 Hardfacing materials including pcd particles, welding rods and earth-boring tools including such materials, and methods of forming and using same |
| 01/06/2011 | WO2011002993A2 Stabilizing members for fixed cutter drill bit |
| 01/06/2011 | WO2011001269A2 System and method for drilling using drilling fluids |
| 01/06/2011 | WO2007019472A8 Methods and systems for design and/or selection of drilling equipment based on wellbore drilling simulations |
| 01/06/2011 | US20110002804 Methods of forming components and portions of earth boring tools including sintered composite materials |
| 01/06/2011 | US20110000718 Integrated cast matrix sleeve api connection bit body and method of using and manufacturing the same |
| 01/06/2011 | US20110000717 Drill bit for a rock drilling tool with increased toughness and method for increasing the toughness of such drill bits |
| 01/06/2011 | US20110000716 Drill bit with a flow interrupter |
| 01/06/2011 | US20110000715 Hardfacing materials including pcd particles, welding rods and earth-boring tools including such materials, and methods of forming and using same |
| 01/06/2011 | US20110000714 Stabilizing members for fixed cutter drill bit |
| 01/06/2011 | CA2671171A1 Drill bit with a flow interrupter |
| 01/05/2011 | EP2268388A1 Polycrystalline diamond materials, methods of fabricating same, and applications using same |
| 01/05/2011 | CN201696040U Spot sampling device |
| 01/05/2011 | CN201695976U Novel diamond compact coring bit |
| 01/05/2011 | CN201695954U High-sharp sintered diamond bit embedded with iron wires |
| 01/05/2011 | CN201695953U Novel spherical diamond compact |
| 01/05/2011 | CN201695952U Rotary drilling rig and flat head device thereof |
| 01/05/2011 | CN201695951U Rock intrusion drill of pile driver |
| 01/05/2011 | CN201695941U Hand-held optical cable mark-burying drill |
| 01/05/2011 | CN101660081B Sparkless hard alloy particle powder material special for conical bit drill |
| 01/04/2011 | US7861809 Rotary drag bit with multiple backup cutters |
| 01/04/2011 | US7861808 Cutter for maintaining edge sharpness |
| 01/04/2011 | US7861807 Drill bit including one piece cutting head |
| 01/04/2011 | US7861806 Shank structure for rotary drill bits |
| 01/04/2011 | US7861805 Conformal bearing for rock drill bit |
| 01/04/2011 | US7861802 Flexible directional drilling apparatus and method |
| 01/04/2011 | CA2605196C Drag bits with dropping tendencies and methods for making the same |
| 01/04/2011 | CA2461985C Down-the-hole drill assembly |
| 12/30/2010 | US20100329081 Method for non-destructively evaluating rotary earth boring drill components and determining fitness-for-use of the same |
| 12/30/2010 | US20100326742 Drill bit for use in drilling subterranean formations |
| 12/30/2010 | US20100326741 Non-parallel face polycrystalline diamond cutter and drilling tools so equipped |
| 12/30/2010 | US20100326740 Bonded Assembly Having Low Residual Stress |
| 12/30/2010 | US20100326739 Earth-boring tools comprising silicon carbide composite materials, and methods of forming same |
| 12/30/2010 | US20100326736 Downhole Lubrication System |
| 12/30/2010 | US20100326735 Downhole Lubrication System |
| 12/29/2010 | WO2010151796A2 Stabilizing downhole tool |
| 12/29/2010 | WO2010151743A2 Sealing system and bi-directional thrust bearing arrangement for a downhole motor |
| 12/29/2010 | WO2010151649A2 Drill bit for use in drilling subterranean formations |
| 12/29/2010 | WO2010151204A1 Downhole tool leg retention methods and apparatus |
| 12/29/2010 | WO2010150185A1 Muffler for pneumatic rock drill |
| 12/29/2010 | WO2010100629A3 Polycrystalline diamond |
| 12/29/2010 | EP2265416A2 Bi-steel percussive drill rod |
| 12/29/2010 | EP1989391B1 Backup cutting element insert for rotary drill bits |
| 12/29/2010 | EP1565642B1 Tool insert |
| 12/29/2010 | CN201687394U Secondary slotting drill |
| 12/29/2010 | CN201687393U Special drill bit for hard rocks |
| 12/29/2010 | CN201687392U Ultra crude crystal grain hard alloy drill teeth |
| 12/29/2010 | CA2766159A1 Sealing system and bi-directional thrust bearing arrangement for a downhole motor |
| 12/29/2010 | CA2764961A1 Downhole tool leg retention methods and apparatus |
| 12/28/2010 | US7857078 Cutting tools and methods of making the same |
| 12/23/2010 | WO2010148313A2 Polycrystalline diamond cutting elements with engineered porosity and method for manufacturing such cutting elements |
| 12/23/2010 | WO2010148264A2 Hybrid bit with variable exposure |
| 12/23/2010 | WO2010147718A2 Erosion resistant subterranean drill bits having infiltrated metal matrix bodies |
| 12/23/2010 | WO2010147548A1 A drill bit and a drill tip |
| 12/23/2010 | US20100320006 Polycrystalline diamond cutting elements with engineered porosity and method for manufacturing such cutting elements |
| 12/23/2010 | US20100320005 Drill bits and methods of manufacturing such drill bits |
| 12/23/2010 | US20100320004 Erosion Resistant Subterranean Drill Bits Having Infiltrated Metal Matrix Bodies |
| 12/23/2010 | US20100320003 Bit for use in at least one of mining, trenching and milling applications |
| 12/23/2010 | US20100320002 Rock bit with a thermal insulating seal ring positioned in the seal gland |
| 12/23/2010 | US20100320001 Hybrid bit with variable exposure |
| 12/23/2010 | US20100319998 Wellbore consolidating tool for rotary drilling application |
| 12/23/2010 | US20100319996 Milling cap for a polycrystalline diamond compact cutter |
| 12/23/2010 | US20100319995 Self-circulating drill bit |
| 12/23/2010 | US20100319994 Resonance enhanced drilling: method and apparatus |
| 12/23/2010 | US20100319993 Downhole tool leg retention methods and apparatus |
| 12/23/2010 | US20100319992 Apparatus and Method for Determining Corrected Weight-On-Bit |
| 12/23/2010 | CA2765710A1 Polycrystalline diamond cutting elements with engineered porosity and method for manufacturing such cutting elements |
| 12/22/2010 | EP2264275A2 Methods and systems for design and/or selecting of drilling equipment based on wellbore drilling simulations |
| 12/22/2010 | EP2262972A2 Stabilizer and reamer system having extensible blades and bearing pads and method of using same |
| 12/22/2010 | CN201679451U Cambered surface PDC (polycrystalline diamond compact) |
| 12/22/2010 | CN201679450U Bidirectional spiral extruding reaming drill with soil guiding grooves |
| 12/22/2010 | CN201679449U Micro reinforcement drilling tool for preventing weathering of relic |
| 12/22/2010 | CN201679448U High rotating speed high pressure resistant impact-resistance roller bit |
| 12/22/2010 | CN201679447U Tricone rock bit for mining based on sliding lubricating bearing |
| 12/22/2010 | CN201679446U Multi-roller bit with conical palm back |
| 12/22/2010 | CN201679444U Low torque reamer |