| Patents for E21B 10 - Drill bits (19,464) |
|---|
| 03/02/2011 | EP2288780A2 Drill bit head for percussion drilling apparatus |
| 03/02/2011 | EP2288779A1 Hydraulic breaker assembly |
| 03/02/2011 | EP2288778A2 Sonic drill bit for core sampling |
| 03/02/2011 | EP1797277B1 Drilling tool comprising a cutting element that is configured as a plate or head |
| 03/02/2011 | CN201753585U Liquid-proof drilling bit and liquid-proof core boring tool |
| 03/02/2011 | CN201753584U All-steel four-wing rotary type drill bit |
| 03/02/2011 | CN101983274A Drill bit for a rock drilling tool with increased toughness and method for increasing the toughness of such drill bits |
| 03/01/2011 | US7899658 Method for evaluating and improving drilling operations |
| 03/01/2011 | US7896109 Spacer ring for elastomeric seal |
| 03/01/2011 | US7896106 Rotary drag bits having a pilot cutter configuraton and method to pre-fracture subterranean formations therewith |
| 03/01/2011 | CA2504523C Composite tool insert |
| 02/28/2011 | CA2707275A1 Drilling cuttings mobilizer |
| 02/24/2011 | WO2011022474A2 Method of forming polystalline diamond elements, polycrystalline diamond elements, and earth boring tools carrying such polycrystalline diamond elements |
| 02/24/2011 | WO2011022421A2 Cutting elements having different interstitial materials in multi-layer diamond tables, earth-boring tools including such cutting elements, and methods of forming same |
| 02/24/2011 | WO2011022372A2 Improved non-planar interface construction |
| 02/24/2011 | WO2011021048A2 Expandable downhole tool apparatus |
| 02/24/2011 | WO2011021047A2 Downhole expandable roller bearing apparatus |
| 02/24/2011 | WO2010104793A3 Rotational drill bits and drilling apparatuses including the same |
| 02/24/2011 | US20110042150 Roof Mining Drill Bit |
| 02/24/2011 | US20110042149 Methods of forming polycrystalline diamond elements, polycrystalline diamond elements, and earth-boring tools carrying such polycrystalline diamond elements |
| 02/24/2011 | US20110042148 Cutting elements having different interstitial materials in multi-layer diamond tables, earth-boring tools including such cutting elements, and methods of forming same |
| 02/24/2011 | US20110042147 Functionally graded polycrystalline diamond insert |
| 02/24/2011 | US20110042146 Drill Bit Head for Percussion Drilling Apparatus |
| 02/24/2011 | US20110042145 Methods for enhancing a surface of a downhole tool and downhole tools having an enhanced surface |
| 02/24/2011 | CA2772124A1 Cutting elements having different interstitial materials in multi-layer diamond tables, earth-boring tools including such cutting elements, and methods of forming same |
| 02/24/2011 | CA2770847A1 Methods of forming polycrystalline diamond elements, polycrystalline diamond elements, and earth-boring tools carrying such polycrystalline diamond elements |
| 02/24/2011 | CA2769937A1 Downhole expandable roller bearing apparatus |
| 02/23/2011 | CN201751525U Combined type drill bit for breaking rock by cutting manner |
| 02/22/2011 | US7891444 Drill bit |
| 02/22/2011 | US7891443 Hardfacing around ball loading hole for earth-boring bit |
| 02/22/2011 | US7891441 Expandable downhole tool |
| 02/22/2011 | CA2613861C Brine based fluid loss pills comprising crosslinked polymer gels and solid salt particles |
| 02/20/2011 | CA2675478A1 Core sample forming mill |
| 02/17/2011 | WO2011020111A2 Diamond impregnated bit with aggressive face profile |
| 02/17/2011 | WO2011019981A2 Roller cone disk with shaped compacts |
| 02/17/2011 | WO2011019647A2 Methods of forming polycrystalline diamond cutting elements, cutting elements, and earth boring tools carrying cutting elements |
| 02/17/2011 | WO2011018659A1 Actuator and method |
| 02/17/2011 | US20110036643 Thermally stable polycrystalline diamond constructions |
| 02/17/2011 | US20110036642 Non-planar interface construction |
| 02/17/2011 | US20110036641 Methods of forming polycrystalline diamond cutting elements, cutting elements, and earth-boring tools carrying cutting elements |
| 02/17/2011 | US20110036640 Diamond impregnated bit with aggressive face profile |
| 02/17/2011 | US20110036639 Roller cone disk with shaped compacts |
| 02/17/2011 | US20110036637 Seismic tool assembly for use in anchor insertion |
| 02/17/2011 | DE20222014U1 Vorrichtung zum Spülbohren von Bohrlöchern in Böden Apparatus for directional drilling of wells in soils |
| 02/17/2011 | DE102007047215A1 Mountain cutting tool useful as chisels and drill bits for mining extraction machines, comprises carbide cutting inserts, where the tool is produced by casting in a casting mold with the target of increasing the wear resistance |
| 02/17/2011 | CA2770718A1 Roller cone disk with shaped compacts |
| 02/17/2011 | CA2770676A1 Methods of forming polycrystalline diamond cutting elements, cutting elements, and earth boring tools carrying cutting elements |
| 02/17/2011 | CA2762861A1 Diamond impregnated bit with aggressive face profile |
| 02/16/2011 | EP2284354A2 Method of drilling out a reaming tool |
| 02/16/2011 | CN201747281U Improved grease filling device |
| 02/16/2011 | CN201747280U Impact cylinder drilling tool and rotary drilling rig |
| 02/16/2011 | CN201747279U Geological exploration drilling machine bit |
| 02/16/2011 | CN201747278U Local radius-expanding multi-wing expanding drill bit |
| 02/16/2011 | CN201747277U Two-way hydraulic structure of small-aperture reamer |
| 02/16/2011 | CN201747276U Bidirectional hydraulic structure for reamer |
| 02/16/2011 | CN201747275U Two-stage axial rubber seal roller bit |
| 02/16/2011 | CN201747274U Rolling thrust device of roller cone bit bearing |
| 02/16/2011 | CN101975062A Efficient cutter head |
| 02/16/2011 | CN101975026A PDC (Polycrystalline Diamond Compact) drill |
| 02/16/2011 | CN101975025A Fractal design method for diamond particle distribution on diamond bit |
| 02/16/2011 | CN101974905A Pile-embedding method for hollow pile and auger drill for implementing same |
| 02/16/2011 | CN101300400B Self actuating underreamer |
| 02/15/2011 | US7886851 Drill bit nozzle |
| 02/10/2011 | WO2011017673A2 Thermally stable polycrystalline diamond constructions |
| 02/10/2011 | WO2011017649A2 Polycrystalline compacts including in-situ nucleated grains earth-boring tools including such compacts, and methods of forming such compacts and tools |
| 02/10/2011 | WO2011017642A2 Anti-tracking spear-points for earth-boring drill bits |
| 02/10/2011 | WO2011017625A2 Method of forming a thermally stable diamond cutting element |
| 02/10/2011 | WO2011017607A2 Highly wear resistant diamond insert with improved transition structure |
| 02/10/2011 | WO2011017592A2 Diamond transition layer construction with improved thickness ratio |
| 02/10/2011 | WO2011017590A2 Polycrystalline diamond material with high toughness and high wear resistance |
| 02/10/2011 | WO2011017582A2 Functionally graded polycrystalline diamond insert |
| 02/10/2011 | WO2011017451A2 Earth-boring tools and components thereof including erosion-resistant extensions, and methods of forming such tools and components |
| 02/10/2011 | WO2011017411A2 Drill bit with an adjustable steering device |
| 02/10/2011 | WO2011017394A2 Cutting element placement on a fixed cutter drill bit to reduce diamond table fracture |
| 02/10/2011 | WO2011017376A2 Superabrasive cutters with grooves on the cutting face and drill bits and drilling tools so equipped |
| 02/10/2011 | WO2010123954A3 Drill bits and tools for subterranean drilling, methods of manufacturing such drill bits and tools and methods of off center drilling |
| 02/10/2011 | US20110035200 Methods for designing fixed cutter bits and bits made using such methods |
| 02/10/2011 | US20110031037 Polycrystalline diamond material with high toughness and high wear resistance |
| 02/10/2011 | US20110031036 Superabrasive cutters with grooves on the cutting face, and drill bits and drilling tools so equipped |
| 02/10/2011 | US20110031035 Cutter and Cutting Tool Incorporating the Same |
| 02/10/2011 | US20110031034 Polycrystalline compacts including in-situ nucleated grains, earth-boring tools including such compacts, and methods of forming such compacts and tools |
| 02/10/2011 | US20110031033 Highly wear resistant diamond insert with improved transition structure |
| 02/10/2011 | US20110031032 Diamond transition layer construction with improved thickness ratio |
| 02/10/2011 | US20110031031 Cutting element for a drill bit used in drilling subterranean formations |
| 02/10/2011 | US20110031030 Cutter having shaped working surface with varying edge chamfer |
| 02/10/2011 | US20110031029 Cutting element placement on a fixed cutter drill bit to reduce diamond table fracture |
| 02/10/2011 | US20110031028 Hard Composite with Deformable Constituent and Method of Applying to Earth-Engaging Tool |
| 02/10/2011 | US20110031027 Core drill bits with enclosed fluid slots |
| 02/10/2011 | US20110031026 Earth-boring tools and components thereof including erosion resistant extensions, and methods of forming such tools and components |
| 02/10/2011 | US20110031025 Drill Bit With An Adjustable Steering Device |
| 02/10/2011 | US20110031022 Directional drilling system |
| 02/10/2011 | US20110031021 Anti-Tracking Spear Points for Earth-Boring Drill Bits |
| 02/10/2011 | CA2770502A1 Polycrystalline compacts including in-situ nucleated grains, earth-boring tools including such compacts, and methods of forming such compacts and tools |
| 02/10/2011 | CA2770500A1 Anti-tracking spear-points for earth-boring drill bits |
| 02/10/2011 | CA2770420A1 Highly wear resistant diamond insert with improved transition structure |
| 02/10/2011 | CA2770377A1 Polycrystalline diamond material with high toughness and high wear resistance |
| 02/10/2011 | CA2770308A1 Diamond transition layer construction with improved thickness ratio |
| 02/10/2011 | CA2770306A1 Functionally graded polycrystalline diamond insert |
| 02/09/2011 | EP2281996A2 Methods and systems for designing and/or selecting drilling equipment using predictions of rotary drill bit walk |
| 02/09/2011 | CN201738816U Diamond compact substrate |