| Patents for E21B 10 - Drill bits (19,464) |
|---|
| 02/03/2005 | CA2533430A1 Down hole hammer drill |
| 02/02/2005 | CN1575372A System for lining a section of a wellbore |
| 02/01/2005 | US6848521 Cutting elements of gage row and first inner row of a drill bit |
| 02/01/2005 | US6848517 Drillable drill bit nozzle |
| 02/01/2005 | CA2260809C Improved disc cutter and excavation equipment |
| 01/28/2005 | CA2475719A1 Wedge tooth cutter element for drill bit |
| 01/27/2005 | WO2005008022A1 Methods for modeling, displaying, designing, and optimizing fixed cutter bits |
| 01/27/2005 | WO2005008021A1 Methods for modeling wear of fixed cutter bits and for designing and optimizing fixed cutter bits |
| 01/27/2005 | WO2005008020A1 Methods for designing fixed cutter bits and bits made using such methods |
| 01/27/2005 | WO2005008019A1 Methods for modeling, designing, and optimizing the performance of drilling tool assemblies |
| 01/27/2005 | DE10114429B4 Verwendung eines angetriebenen Vortriebskörpers, an dessen Spitze sich ein mit zwei gegeneinanderer beweglichen Schneiden versehenes Zerkleinerungswerkzeug befindet zum Herstellen von Schüttgutbohrungen Using a driven propulsion body, headed by a provided with two against einanderer mobile blade grinding tool is for producing bulk holes |
| 01/27/2005 | CA2748690A1 Methods for modeling, displaying, designing, and optimizing fixed cutter bits |
| 01/27/2005 | CA2748559A1 Methods for modeling, displaying, designing, and optimizing fixed cutter bits |
| 01/27/2005 | CA2748424A1 Methods for modeling, displaying, designing, and optimizing fixed cutter bits |
| 01/27/2005 | CA2748423A1 Methods for modeling, displaying, designing, and optimizing fixed cutter bits |
| 01/27/2005 | CA2734730A1 Methods for designing fixed cutter bits and bits made using such methods |
| 01/27/2005 | CA2531717A1 Methods for modeling, designing, and optimizing the performance of drilling tool assemblies |
| 01/26/2005 | EP1500783A2 Method of designing a roller cone bit |
| 01/26/2005 | EP1500782A2 Method of designing a roller cone bit |
| 01/26/2005 | EP1500781A2 Method of designing a roller cone bit |
| 01/26/2005 | CN2674066Y Rotating mechanism of rotary drilling machine |
| 01/26/2005 | CN2674065Y Rotating mechanism of rotary drilling machine |
| 01/26/2005 | CN2673557Y High self sharping metal bonding agent diamond product |
| 01/25/2005 | US6845828 Shaped cutting-grade inserts with transitionless diamond-enhanced surface layer |
| 01/20/2005 | WO2005005769A1 Earth penetrating rotary drill bit with helical ports |
| 01/20/2005 | WO2004079151A3 Drilling with casing latch |
| 01/20/2005 | US20050015230 Axial stability in rock bits |
| 01/20/2005 | US20050015229 Methods for modeling wear of fixed cutter bits and for designing and optimizing fixed cutter bits |
| 01/19/2005 | EP1498575A2 Method of designing a roller-cone drill bit. |
| 01/19/2005 | EP1498574A2 Method of determining a drilling parameter of a roller-cone drill bit |
| 01/19/2005 | EP1498573A2 Method for designing a roller-cone bit |
| 01/19/2005 | EP1498572A2 Roller-cone bits, systems, drilling methods, and design methods with optimization of tooth orientation |
| 01/19/2005 | CN2672275Y Hole enlarging pilot bit |
| 01/19/2005 | CN1566541A Self-drilling rockbolt |
| 01/19/2005 | CN1566540A Pile-forming process for pouring column-screw thread combined pile |
| 01/19/2005 | CN1185087C Diamond blade having rim type cutting tip for use in grinding or cutting apparatus |
| 01/19/2005 | CN1185073C Autoamtic argon arc welding method for annular welded seam of PDC drill |
| 01/18/2005 | US6843334 Drilling head of a rock drill |
| 01/18/2005 | US6843333 Impregnated rotary drag bit |
| 01/15/2005 | CA2474319A1 Axial stability in rock bits |
| 01/13/2005 | WO2004079150A3 Full bore lined wellbores |
| 01/13/2005 | US20050010382 Methods for evaluating and improving drilling operations |
| 01/12/2005 | EP1496297A2 Vessel for well intervention |
| 01/12/2005 | EP1496192A2 Drill bit |
| 01/12/2005 | EP1415065B1 Drill crown |
| 01/12/2005 | EP1131532B1 Downhole tool with extendable members |
| 01/12/2005 | CN2670578Y Positive displacement drill for horizontal well |
| 01/12/2005 | CN2670577Y Roller cone bit with steel ball locking bearing structure |
| 01/11/2005 | US6841260 Rod; coated fiber bundles; hard core, ductile surfaces |
| 01/06/2005 | WO2004104360A3 Drill bit and drilling system with under -reamer- and stabilisation-section |
| 01/06/2005 | US20050000736 Easy hold power auger |
| 01/06/2005 | US20050000317 Compositions having enhanced wear resistance |
| 01/05/2005 | EP1493897A2 Apparatus for directional drilling |
| 01/04/2005 | US6837317 Bearing seal |
| 01/01/2005 | CA2472730A1 Cutting element arrangement for single roller cone bit |
| 12/30/2004 | US20040262045 Earth penetrating rotary drill bit with helical ports |
| 12/30/2004 | US20040262042 Bit head retaining system and method of installing a bit head in a percussion drill |
| 12/29/2004 | EP1491716A2 Method for drilling a borehole and wet boring tool |
| 12/29/2004 | EP1490578A1 Percussion drill bit and a button therefor |
| 12/29/2004 | EP1490577A1 Grease filling arrangement in a cutter for a boring head |
| 12/29/2004 | EP1454029A4 Fluid drilling head |
| 12/29/2004 | EP0958262B1 Method for infiltrating preformed components and component assemblies |
| 12/29/2004 | CN2667137Y Multifunction diamond inserted tooth protection composite sheet drilling bit |
| 12/29/2004 | CN2667136Y Drill bit case |
| 12/29/2004 | CN1181957C Diamond blade having segment type cutting tip for use in cutting, grinding or drilling apparatus |
| 12/28/2004 | US6834733 Spiral wave bladed drag bit |
| 12/28/2004 | CA2234689C Mill for wellbore milling operations |
| 12/23/2004 | WO2004111381A1 Percussive drill bit |
| 12/23/2004 | WO2004111284A2 Composite material for drilling applications |
| 12/23/2004 | US20040256155 Percussion drilling head |
| 12/23/2004 | CA2528482A1 Percussive drill bit |
| 12/22/2004 | EP1488019A1 Polycrystalline material element with improved wear resistance and methods of manufacture thereof |
| 12/22/2004 | CN2665342Y Double flow passage drilling bit |
| 12/22/2004 | CN2665341Y Combined type core extracting drilling bit |
| 12/22/2004 | CN1556892A Percussion drilling head |
| 12/22/2004 | CN1556302A Low nose well drill |
| 12/20/2004 | CA2471796A1 Drill bit performance analysis tool |
| 12/16/2004 | US20040254664 Radial force distributions in rock bits |
| 12/16/2004 | US20040251054 System for overburden drilling |
| 12/16/2004 | US20040251053 Methods for evaluating cutting arrangements for drill bits and their appliction to roller cone drill bit designs |
| 12/16/2004 | DE10321617A1 Vorrichtung zur Herstellung eines Erdlochs Apparatus for producing a earthen hole |
| 12/16/2004 | DE10146025B4 Verfahren und System zum horizontalen Erdbohren sowie Schlagspitze und Verfahren zum Starten eines Schlagwerkzeugs Method and system for horizontal Erdbohren and striking tip and method for starting a striking tool |
| 12/15/2004 | CN1555453A Liquid seal for wet roof bit |
| 12/14/2004 | CA2276841C Unplanar non-axisymmetric inserts |
| 12/14/2004 | CA2183026C Drill bit with debris conveying flute |
| 12/09/2004 | WO2004106693A2 Method and appartus for cutting earthen formations |
| 12/09/2004 | WO2004106004A1 Polycrystalline diamond abrasive elements |
| 12/09/2004 | WO2004106003A1 Polycrystalline diamond abrasive elements |
| 12/09/2004 | WO2004071710A3 Diamond tool inserts pre-fixed with braze alloys and methods to manufacture thereof |
| 12/09/2004 | WO2002088507A3 Roller cone bits with reduced packing |
| 12/09/2004 | US20040245025 Cutting elements with improved cutting element interface design and bits incorporating the same |
| 12/09/2004 | US20040245024 Bit body formed of multiple matrix materials and method for making the same |
| 12/09/2004 | US20040245023 Drill bit and drill tip having a tip-locating structure |
| 12/09/2004 | US20040245022 Bonding of cutters in diamond drill bits |
| 12/09/2004 | US20040245020 Apparatus and methods for drilling a wellbore using casing |
| 12/09/2004 | US20040244992 Full bore lined wellbores |
| 12/08/2004 | CN1179113C Excavator |
| 12/07/2004 | US6827162 Self-retaining downhole-hammer drill bit |
| 12/07/2004 | US6827161 Roller cone drill bit having non-axisymmetric cutting elements oriented to optimize drilling performance |
| 12/07/2004 | US6827159 Steerable horizontal subterranean drill bit having an offset drilling fluid seal |