| Patents for E21B 10 - Drill bits (19,464) |
|---|
| 05/22/2007 | CA2409554C Protective overlay coating for pdc drill bits |
| 05/22/2007 | CA2407330C Drilling apparatus and method for single pass bolting |
| 05/18/2007 | WO2007056554A1 Methods for optimizing efficiency and durability of rotary drag bits and rotary drag bits designed for optimal efficiency and durability |
| 05/18/2007 | WO2007056007A2 Downhole percussion tool |
| 05/18/2007 | WO2007055353A1 Diameter expanding groove cutting device and expanding/contracting mechanism tool |
| 05/18/2007 | WO2007054154A2 Tool for drilling in earthy and/or rocky ground |
| 05/18/2007 | CA2628809A1 Methods for optimizing efficiency and durability of rotary drag bits and rotary drag bits designed for optimal efficiency and durability |
| 05/18/2007 | CA2623249A1 Diameter expanding groove cutting device and expanding/contracting mechanism tool |
| 05/17/2007 | US20070107946 Single cone rock bit having inserts adapted to maintain hole gage during drilling |
| 05/17/2007 | US20070107945 Recoil auger with clutch bearing |
| 05/17/2007 | US20070107942 Hardfacing materials with highly conforming properties |
| 05/17/2007 | US20070107940 Drill bit lubricant utilizing a sulfur-phosphorous EP agent |
| 05/17/2007 | US20070107936 Dog-type recoil actuated auger |
| 05/17/2007 | CA2568053A1 Ball-activated mechanism for controlling the operation of a downhole tool |
| 05/16/2007 | EP1784582A2 Seal for a bearing assembly |
| 05/16/2007 | EP1784268A2 Indexable cutting inserts and methods for producing the same |
| 05/16/2007 | CN2900758Y Open hole cave making tool for oil-gas well |
| 05/16/2007 | CN1965145A Enlarging and stabilising tool for a borehole |
| 05/16/2007 | CN1965144A Ion-beam assisted deposition of inorganic coatings for elastomeric seal wear resistance improvement |
| 05/16/2007 | CN1963139A Self-injection underwater perforating twist-sucking drilling machine |
| 05/16/2007 | CN1315627C Deep hole drift tool |
| 05/16/2007 | CN1315626C Deep hole drift tool |
| 05/15/2007 | US7217180 Diamond tape coating and methods of making and using same |
| 05/15/2007 | US7216727 Drilling bit for drilling while running casing |
| 05/15/2007 | US7216565 Methods of manufacturing and repairing steel body rotary drill bits including support elements affixed to the bit body at least partially defining cutter pocket recesses |
| 05/15/2007 | CA2254667C Face seal having strain induced face geometry |
| 05/15/2007 | CA2247599C Rock bit hardmetal overlay and process of manufacture |
| 05/15/2007 | CA2207755C A drilling method and bit assembly to realize the method |
| 05/15/2007 | CA2201038C Sub-assembly for lubricating rock drill bit |
| 05/10/2007 | US20070102202 Earth-boring rotary drill bits including bit bodies comprising reinforced titanium or titanium-based alloy matrix materials, and methods for forming such bits |
| 05/10/2007 | US20070102201 Drill bit and system for drilling a borehole |
| 05/10/2007 | US20070102200 Earth-boring rotary drill bits including bit bodies having boron carbide particles in aluminum or aluminum-based alloy matrix materials, and methods for forming such bits |
| 05/10/2007 | US20070102199 Earth-boring rotary drill bits and methods of manufacturing earth-boring rotary drill bits having particle-matrix composite bit bodies |
| 05/10/2007 | US20070102198 Earth-boring rotary drill bits and methods of forming earth-boring rotary drill bits |
| 05/10/2007 | US20070102196 Downhole percussion tool |
| 05/09/2007 | EP1781893A1 Horizontal perspective simulator |
| 05/09/2007 | EP1781892A1 A rock drill bit and a thread joint |
| 05/09/2007 | EP1781891A1 Method for manufacturing a drilling tool with an elastomer seal having graded properties |
| 05/09/2007 | EP1781890A1 Drilling tool with elastomer seal having graded properties |
| 05/09/2007 | EP1322832B1 Cutting insert for percussion drill bit |
| 05/08/2007 | US7213661 Dual property hydraulic configuration |
| 05/08/2007 | US7213643 Expanded liner system and method |
| 05/08/2007 | US7213641 Fracturing head with replaceable inserts for improved wear resistance and method of refurbishing same |
| 05/03/2007 | US20070095577 Roller cone bits with wear and fracture resistant surface |
| 05/03/2007 | US20070095576 Multi-Sectional Percussive Drill Bit Assembly |
| 05/03/2007 | US20070095574 Drill bit with protection member |
| 05/02/2007 | CN2895698Y Energy-saving hard alloy piece for '-' shape drill bit |
| 05/02/2007 | CN2895697Y '-' shape energy-saving drill bit |
| 05/02/2007 | CN2895696Y Multifunction automatic diameter-enlarging drill bit |
| 05/02/2007 | CN1955437A Automatic anti-oblique well drilling tool |
| 05/02/2007 | CN1313699C Rock drill |
| 05/02/2007 | CN1313255C Drill tool and/or chisel tool |
| 05/02/2007 | CN1313254C Rock drilling bits |
| 05/02/2007 | CN1313235C Percussion or hammer drill |
| 05/01/2007 | US7211218 Polycrystalline diamond carbide composites |
| 05/01/2007 | US7210543 Reversible power takeoff driven post hole digger |
| 05/01/2007 | US7210377 Cone erosion protection for roller cone drill bits |
| 05/01/2007 | CA2567011A1 Thermally stable polycrystalline ultra-hard constructions |
| 05/01/2007 | CA2405234C Roller cone drill bit having lubrication contamination detector and lubrication positive pressure maintenance system |
| 05/01/2007 | CA2342615C Hole opener with multisized, replaceable arms and cutters |
| 04/26/2007 | WO2007047147A1 Earth boring bit with tilted hydrodynamic thrust bearing |
| 04/26/2007 | US20070089913 Fixed Cutter Drill Bit with Non-cutting Erosion Resistant Inserts |
| 04/26/2007 | US20070089912 Downhole tool having radially extendable members |
| 04/26/2007 | US20070089908 Secondary retainer for a downhole hammer bit |
| 04/26/2007 | DE102005050217A1 Earth test boring/drilling device, e.g. for drainage, has test boring equipment with a casing and a drive mechanism for driving test boring equipment forwards and backwards |
| 04/25/2007 | EP1777365A1 An expandable drill bit |
| 04/25/2007 | CN2893123Y Hard alloy borer insert |
| 04/25/2007 | CN2893122Y Improved bull bit body |
| 04/25/2007 | CN2893121Y Geologic drilling machine disposable bit |
| 04/25/2007 | CN1952343A Mechanical self-excited interactive hydraulic pulse drill bit pup joint |
| 04/25/2007 | CN1952342A Drill bit with pulse generation cavity |
| 04/25/2007 | CA2566640A1 Formation prioritization optimization |
| 04/25/2007 | CA2564531A1 Representation of whirl in fixed cutter drill bits |
| 04/24/2007 | US7207402 Percussion drill bit and a regrindable cemented carbide button therefor |
| 04/24/2007 | US7207398 Steerable rotary drill bit assembly with pilot bit |
| 04/24/2007 | CA2458158C Drill bit and cutter having insert clusters and method of manufacture |
| 04/24/2007 | CA2398253C Cutting structure for roller cone drill bits |
| 04/19/2007 | WO2007044791A1 Cutting element apparatuses, drill bits including same, methods of cutting, and methods of rotating a cutting element |
| 04/19/2007 | WO2007044714A1 Mechanically modified filter cake |
| 04/19/2007 | WO2007042618A1 Method and rock drilling rig for hole drilling |
| 04/19/2007 | WO2007041838A1 Self actuating underreamer |
| 04/19/2007 | WO2007041811A1 Under-reaming and stabilizing tool for use in a borehole and method for using same |
| 04/19/2007 | US20070084640 Drill bit and cutter element having aggressive leading side |
| 04/19/2007 | US20070084639 Drilling fluid centrifuge systems |
| 04/19/2007 | CA2625500A1 Self actuating underreamer |
| 04/19/2007 | CA2624432A1 Mechanically modified filter cake |
| 04/18/2007 | EP1774132A1 A drill bit |
| 04/18/2007 | EP1266125B1 Rotatable cutting tool |
| 04/18/2007 | CN2890317Y Improved shaft bar |
| 04/18/2007 | CN2890316Y Multistage double-core PDC drill bit |
| 04/18/2007 | CN2890315Y Improved bore bit |
| 04/18/2007 | CN2890312Y Attached electric short auger drilling machine |
| 04/18/2007 | CN2890172Y Concrete-cored soil cement mixing pile machine |
| 04/18/2007 | CN1948703A Alloy drill bit, its manufacturing method and special extrusion mould using said method |
| 04/18/2007 | CN1948701A Rotary excavating extruding expanding drilling machine and its working method |
| 04/18/2007 | CN1948700A Rotary excavating extruding expanding drilling machine and its working method |
| 04/18/2007 | CN1948699A Method of avoiding lateral resonance of drill |
| 04/18/2007 | CN1311141C Method for drilling a borehole and wet boring tool |
| 04/17/2007 | US7204324 Rotating systems associated with drill pipe |
| 04/17/2007 | CA2457648C Drill bit cutter element having multiple cusps |