| Patents for E21B 10 - Drill bits (19,464) |
|---|
| 05/17/2006 | CN2780974Y Variable cross-section alloy block of sheet alloy drill bit |
| 05/17/2006 | CN2780973Y Rock drill rod with taper shank collar |
| 05/17/2006 | CN2780972Y Rolling composite bearing structure of tri-cone rotary drill bit |
| 05/16/2006 | US7044243 High-strength/high-toughness alloy steel drill bit blank |
| 05/16/2006 | US7044242 Roller cone bits with reduced packing |
| 05/16/2006 | US7044241 Method for drilling with casing |
| 05/16/2006 | CA2354941C Polycrystalline diamond materials formed from coarse-sized diamond grains |
| 05/16/2006 | CA2210278C Cemented carbide body with improved high temperature and thermomechanical properties |
| 05/11/2006 | WO2006050167A1 Polycrystalline cutter with multiple cutting edges |
| 05/11/2006 | US20060100836 Performance forecasting and bit selection tool for drill bits |
| 05/11/2006 | US20060099895 Composite tool insert |
| 05/11/2006 | US20060099885 Wear indication apparatus and method |
| 05/11/2006 | US20060096788 Reamer assembly |
| 05/11/2006 | US20060096787 Bit retainer system |
| 05/11/2006 | US20060096786 Re-settable locking mechanism for downhole tools |
| 05/11/2006 | US20060096785 Expandable bit |
| 05/11/2006 | US20060096784 Device for advancing drillings in the ground |
| 05/11/2006 | US20060096782 Self relieving seal |
| 05/11/2006 | DE102005048687A1 Diamantimprägnierte Schneidestrukturen Impregnated diamond cutting structures |
| 05/11/2006 | CA2586045A1 Improved underreamer and method of use |
| 05/10/2006 | EP1616071A4 Drill bit |
| 05/10/2006 | CN2779032Y Hard alloy pricking sheet |
| 05/10/2006 | CN2779031Y Hard alloy bit |
| 05/09/2006 | US7040424 Drill bit and cutter having insert clusters and method of manufacture |
| 05/09/2006 | US7040423 Nozzle bore for high flow rates |
| 05/09/2006 | US7040421 Liquid driven downhole drilling machine |
| 05/09/2006 | US7040420 Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells |
| 05/09/2006 | US7040416 T-post hole-forming device and use for installing a T-post |
| 05/09/2006 | CA2525221A1 Performance forecasting and bit selection tool for drill bits |
| 05/09/2006 | CA2369885C Design of wear compensated roller cone drill bits |
| 05/09/2006 | CA2274918C Drilling head |
| 05/09/2006 | CA2257538C Cutting tool for use in a wellbore |
| 05/04/2006 | US20060090937 Drill bit cutting elements with selectively positioned wear resistant surface |
| 05/04/2006 | US20060090891 Fracturing head with replaceable inserts for improved wear resistance and method of refurbishing same |
| 05/03/2006 | EP1210497B8 Bit connector |
| 05/03/2006 | CN2777175Y Poly-crystal diamond composite drilling bit having advancing sharp teeth |
| 05/03/2006 | CN2777174Y PDC full scale advacing sharp teeth strengthened type dilling bit |
| 05/03/2006 | CN2777173Y Rock powder dredging device for borehole |
| 05/03/2006 | CN1766277A Air DTH hammer drilling equipment for core and follow-down drilling |
| 05/02/2006 | US7036614 Fracture and wear resistant compounds and rock bits |
| 05/02/2006 | US7036613 Lip seal for roller cone drill bit |
| 05/02/2006 | US7036611 Expandable reamer apparatus for enlarging boreholes while drilling and methods of use |
| 04/27/2006 | WO2006043999A2 Cast flapper with hot isostatic pressing treatment |
| 04/27/2006 | WO2005119376A3 Horizontal perspective display |
| 04/27/2006 | WO2005118998A8 Horizontal perspective simulator |
| 04/27/2006 | WO2005113926A3 Wear indication apparatus and method |
| 04/27/2006 | US20060086540 Dual-Edge Working Surfaces for Polycrystalline Diamond Cutting Elements |
| 04/27/2006 | US20060086537 Drilling with mixed tooth types |
| 04/27/2006 | DE10359103B4 Vorrichtung zur Herstellung von Bohrpfählen An apparatus for producing bored piles |
| 04/27/2006 | CA2571936A1 Cast flapper with hot isostatic pressing treatment |
| 04/26/2006 | EP1649135A1 Earth penetrating rotary drill bit with helical ports |
| 04/26/2006 | EP1649134A2 Composite material for drilling applications |
| 04/26/2006 | EP1649128A2 Device for drilling a bore in the ground |
| 04/26/2006 | CN1764614A Diamond tool inserts pre-fixed with braze alloys and methods to manufacture thereof |
| 04/26/2006 | CN1763349A PDC bit for petroleum and natural gas drilling |
| 04/25/2006 | US7032693 Preformed tooth for tooth bit |
| 04/25/2006 | CA2334741C Casing drilling shoe |
| 04/20/2006 | US20060081403 Bit assembly |
| 04/20/2006 | US20060081402 Impregnated diamond cutting structures |
| 04/20/2006 | US20060080895 Polycrystalline diamond materials formed from coarse-sized diamond grains |
| 04/20/2006 | DE19703994B4 Bohrer Drill |
| 04/20/2006 | DE10334610B4 Bohrkopf Wellhead |
| 04/20/2006 | DE102004031600B4 Werkzeug zur Bearbeitung eines mineralischen Untergrundes mit einem Ultraschall-Werkzeuggerät Tool for machining of a mineral substrate with an ultrasonic tool device |
| 04/19/2006 | CN2773299Y Abrasive sawtooth coal-cutting drilling rod |
| 04/19/2006 | CN2773298Y Spiral drilling bit with telescopic tip |
| 04/19/2006 | CN1760502A Abnormal shaped bore bit with multiple blades |
| 04/19/2006 | CN1252369C Diamond-hard alloy composite type coring bit and its manufacturing process |
| 04/18/2006 | US7028790 Rotary drill bit |
| 04/18/2006 | CA2519495A1 Impregnated diamond cutting structures |
| 04/18/2006 | CA2371740C Back reaming tool |
| 04/18/2006 | CA2289411C Superhard material enhanced inserts for earth-boring bits |
| 04/18/2006 | CA2271655C Process and device for simultaneously drilling and lining a hole |
| 04/13/2006 | US20060076163 Flow allocation in drill bits |
| 04/12/2006 | EP1614852A8 Hole opener |
| 04/12/2006 | EP1453627A4 Consolidated hard materials, methods of manufacture, and applications |
| 04/12/2006 | CN2771459Y Multi-stage flexible integral drilling tool stabilizer |
| 04/12/2006 | CN2771457Y Hard alloy nozzle |
| 04/12/2006 | CN2771456Y Efficient discharge medium-soft rock diamond composite blade bit |
| 04/12/2006 | CN1759226A Cutting element |
| 04/12/2006 | CN1757875A Near drill local low pressure drilling tool |
| 04/12/2006 | CN1757874A Well bottom hydraulic suction pressure lowering drilling tool |
| 04/12/2006 | CN1250861C Excavating tool |
| 04/12/2006 | CN1250481C High volume density polycrystalline diamond with working surfaces depleted of catalyzing material |
| 04/12/2006 | CN1250376C High speed boring apparatus. |
| 04/12/2006 | CA2523325A1 Flow allocation in drill bits |
| 04/11/2006 | US7025156 Rotary drill bit for casting milling and formation drilling |
| 04/11/2006 | US7025155 Rock bit with channel structure for retaining cutter segments |
| 04/11/2006 | US7025144 Wellbore liner system |
| 04/11/2006 | CA2387299C Drilling tool with non rotating sleeve |
| 04/11/2006 | CA2349631C Cutting structure for roller cone drill bits |
| 04/11/2006 | CA2159796C Composite nozzles for rock bits |
| 04/11/2006 | CA2151899C Tool component |
| 04/06/2006 | WO2006036525A2 Rotary drill bit having cutting insert with a notch |
| 04/06/2006 | WO2005114542A3 Methods for evaluating and improving drilling operations |
| 04/06/2006 | US20060074616 Roller cone drill bits with optimized cutting zones, load zones, stress zones and wear zones for increased drilling life and methods |
| 04/06/2006 | US20060070771 Earth boring drill bits with casing component drill out capability and methods of use |
| 04/05/2006 | EP1641998A1 Percussive drill bit |
| 04/05/2006 | EP1222362B1 Cutting tool for breaking hard material, and a cutting cap therefor |
| 04/05/2006 | CN2769488Y Acute angle PDC cutting piece drilling bit |
| 04/05/2006 | CN2769487Y Drilling bit with high stability |