| Patents for E21B 10 - Drill bits (19,464) |
|---|
| 07/28/2005 | DE102004056324A1 Neuartige Bohrer und Schneidstrukturen Novel drill and cutting structures |
| 07/27/2005 | EP1556583A2 Method and composition for reducing wear in a cutting head of a tunnel boring machine |
| 07/27/2005 | CN2713117Y Casing fracture contraction bit |
| 07/27/2005 | CN2713116Y Integral blade screw auger |
| 07/27/2005 | CN1212452C Plate guided bucket boring process for site casting foundation piles |
| 07/27/2005 | CN1212451C Plate guided bucket excavator |
| 07/26/2005 | US6920944 Apparatus and method for drilling and reaming a borehole |
| 07/26/2005 | US6920923 Section mill for wells |
| 07/26/2005 | CA2364527C Rock drilling press |
| 07/26/2005 | CA2158903C Bit-stabilized combination coring and drilling system |
| 07/26/2005 | CA2112143C Tool component |
| 07/21/2005 | US20050159937 Tensile and compressive stresses |
| 07/21/2005 | US20050155766 Flexible wellbore broach |
| 07/20/2005 | EP1554098A2 Brazed diamond tools and methods for making the same |
| 07/20/2005 | EP1159505B1 Roller cone bit with improved seal gland design |
| 07/20/2005 | CN2711368Y Composite drill-bit made of poly-crystal diamond |
| 07/20/2005 | CN1643232A Percussion drill bit and a button therefor |
| 07/19/2005 | US6918455 Drill bit with large inserts |
| 07/14/2005 | WO2005052301A3 Drill bit with protection member |
| 07/14/2005 | US20050154568 Wear indicator |
| 07/14/2005 | US20050150693 Downhole resettable jar tool with axial passageway and multiple biasing means |
| 07/14/2005 | US20050150656 Single mill casing window cutting tool |
| 07/13/2005 | CN2709633Y Milling roller with strengthed teeth |
| 07/13/2005 | CN2709632Y Expanding bit for casing side drilling |
| 07/13/2005 | CN2709631Y Roller bit with floating bush |
| 07/13/2005 | CN2709630Y Roller bit |
| 07/13/2005 | CN2709629Y Anti-mud single roller bit |
| 07/13/2005 | CN1210487C Method for preparing composition gradient intermediate transition layer on wedge shape or complex shape drill working-surface |
| 07/13/2005 | CN1210486C Bearing slip-in material and making method |
| 07/12/2005 | US6915867 Earth penetrating rotary drill bit with helical ports |
| 07/12/2005 | US6915866 Polycrystalline diamond with improved abrasion resistance |
| 07/07/2005 | WO2005061845A1 Window reaming and coring apparatus and method of use |
| 07/07/2005 | WO2005061838A1 Drilling tool |
| 07/07/2005 | WO2005061181A2 Polycrystalline diamond abrasive elements |
| 07/07/2005 | US20050145417 Expandable reamer apparatus for enlarging subterranean boreholes and methods of use |
| 07/07/2005 | US20050145392 Wellbore liner system |
| 07/06/2005 | CN2707939Y Improved spooling device |
| 07/06/2005 | CN1635174A Preparing method for bit basis material containing rare earth |
| 07/05/2005 | US6913098 Sub-reamer for bi-center type tools |
| 06/30/2005 | US20050139397 Polycrystalline diamond abrasive elements |
| 06/30/2005 | US20050139396 Fixing arrangement |
| 06/29/2005 | EP1545837A2 Molten braze-coated superabrasive particles and associated methods |
| 06/29/2005 | CN2706578Y Drill bit for cement drill and electric hammer drill |
| 06/29/2005 | CN1631636A Drill tool and/or chisel tool |
| 06/28/2005 | US6910838 Rock drill |
| 06/23/2005 | WO2005056972A1 Rock drill bit |
| 06/23/2005 | WO2005056971A1 Method and apparatus for directional drilling |
| 06/23/2005 | WO2004094767B1 Expanded liner system and method |
| 06/23/2005 | US20050136667 Superabrasive particle synthesis with controlled placement of crystalline seeds |
| 06/23/2005 | US20050133278 Novel bits and cutting structures |
| 06/23/2005 | US20050133277 Superhard mill cutters and related methods |
| 06/23/2005 | US20050133276 Bits and cutting structures |
| 06/23/2005 | US20050133273 Roller cone drill bits with enhanced cutting elements and cutting structures |
| 06/23/2005 | US20050133272 Methods for modeling, displaying, designing, and optimizing fixed cutter bits |
| 06/23/2005 | US20050133268 Method and apparatus for casing and directional drilling using bi-centered bit |
| 06/23/2005 | US20050133265 Rock bit with grease composition utilizing polarized graphite |
| 06/23/2005 | US20050133260 Wear compensated roller cone drill bits |
| 06/22/2005 | EP1544407A2 Underbalanced well completion |
| 06/22/2005 | EP1544405A2 Underbalanced well completion |
| 06/17/2005 | CA2489709A1 Novel bits and cutting structures |
| 06/16/2005 | WO2005054621A1 Flat and bevel chipbreaker insert |
| 06/16/2005 | WO2005054620A1 Method, drilling machine, drill bit and bottom hole assembly for drilling by electrical discharge pulses |
| 06/16/2005 | US20050129950 Polycrystalline Diamond Partially Depleted of Catalyzing Material |
| 06/16/2005 | US20050126829 Cutting plate for a drill bit |
| 06/16/2005 | US20050126826 Directional casing and liner drilling with mud motor |
| 06/16/2005 | CA2546938A1 Flat and bevel chipbreaker insert |
| 06/15/2005 | CN1626768A Method for keeping diameter of electroplated diamond drill |
| 06/15/2005 | CN1206417C Forming method for water-proof pile fender and screw drill therefor |
| 06/15/2005 | CN1206188C Polycrystalline diamond with surface depleted of catalyzing material |
| 06/14/2005 | US6904984 Stepped polycrystalline diamond compact insert |
| 06/14/2005 | US6904983 Low-contact area cutting element |
| 06/14/2005 | CA2216543C Milling tool, whipstock, milling system and method of forming a window in the wall of a tubular |
| 06/14/2005 | CA2182704C Drilling bit assembly and apparatus |
| 06/09/2005 | WO2005052305A1 Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells |
| 06/09/2005 | WO2005052301A2 Drill bit with protection member |
| 06/09/2005 | US20050121235 Dual property hydraulic configuration |
| 06/08/2005 | EP1255909B8 Drill bit, hard member, and bit body |
| 06/08/2005 | CN2703860Y Curved surface tri-cone rotary drill bit |
| 06/08/2005 | CN1625640A Composite abrasive compact |
| 06/07/2005 | US6902014 Roller cone bi-center bit |
| 06/02/2005 | WO2005049490A1 Dual-phase hard material, method for the production thereof and its use |
| 06/02/2005 | WO2005049295A1 Drilling and/or chiselling tool |
| 06/02/2005 | US20050117984 Consolidated hard materials, methods of manufacture and applications |
| 06/02/2005 | US20050115744 High Volume Density Polycrystalline Diamond With Working Surfaces Depleted Of Catalyzing Material |
| 06/02/2005 | US20050115743 Randomly-oriented composite constructions |
| 06/02/2005 | CA2488085A1 Randomly-oriented composite constructions |
| 06/01/2005 | CN1623027A 流体钻削头 Drilling fluid head |
| 06/01/2005 | CN1204331C Mining machine and mining method |
| 05/31/2005 | CA2247993C Thrust disc bearings for rotary cone air bits |
| 05/26/2005 | US20050112396 Composite constructions with oriented microstructure |
| 05/26/2005 | US20050109546 Flat and bevel chipbreaker insert |
| 05/26/2005 | US20050109545 Barrier Coated Granules for Imporve Hardfacing Material |
| 05/26/2005 | US20050109544 Drill bit having an improved seal and lubrication method using same |
| 05/26/2005 | US20050109543 Cutting element arrangement for single roller cone bit |
| 05/26/2005 | US20050108948 Molten braze-coated superabrasive particles and associated methods |
| 05/25/2005 | EP1533468A1 Drill bit having an improved seal |
| 05/25/2005 | CN1619094A Drill bit capable of matching rock hammer energy |
| 05/25/2005 | CN1619093A Bit shank structure of gadding machine |
| 05/25/2005 | CA2488221A1 Diffusion barrier coated granules for improved hardfacing material |
| 05/24/2005 | CA2262106C Apparatus and method for milling a hole in casing |