Patents
Sitemap › E21 - Earth or rock drilling; Mining › E21B - Earth or rock drilling; Obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells › E21B 10 - Drill bits
Patents for E21B 10 - Drill bits (19,464)
09/2005
09/15/2005WO2005085581A1 Expanding drill
09/15/2005WO2005084376A2 Rotating systems associated with drill pipe
09/15/2005WO2005084334A2 Superabrasive particle synthesis with controlled placement of crystalline seeds
09/15/2005US20050199429 Transmission sleeve
09/15/2005US20050199427 Drilling on gauge sub
09/15/2005US20050199426 Rotatable drill shoe
09/15/2005CA2554598A1 Single pass drilling apparatus, use a one -piece drill bit, method and rock bolt for single pass rock bolting
09/14/2005CN2725613Y Perforated floating sleeve sliding bearing
09/14/2005CN2725499Y PDC composite type roller cone bit
09/14/2005CN1668827A Cutting tools with two-slope profile
09/13/2005US6942046 Bore bit for very hard material
09/13/2005US6942045 Drilling with mixed tooth types
09/13/2005CA2388762C Drilling apparatus
09/13/2005CA2366198C Roller cone drill bit structure having improved journal angle and journal offset
09/13/2005CA2349640C Cutting structure for roller cone drill bits
09/13/2005CA2327920C Apparatus and method for simultaneous drilling and casing wellbores
09/13/2005CA2161874C Drill bit and other downhole tools
09/09/2005WO2005083225A1 Hydrodynamic pump passages for rolling cone drill bit
09/09/2005CA2556804A1 Hydrodynamic pump passages for rolling cone drill bit
09/09/2005CA2461082A1 Drilling on gauge sub
09/08/2005US20050194191 Roller cone drill bits with enhanced drilling stability and extended life of associated bearings and seals
09/08/2005US20050194187 Rotating systems associated with drill pipe
09/07/2005EP1570156A2 Drilling a borehole
09/07/2005EP1570150A1 One-step directional coring or drilling system
09/07/2005CN2723666Y High build angle rate hydraulic variable diameter drilling rig stabilizer
09/07/2005CN1664301A Roller cone drill bits with enhanced cutting elements and cutting structures
09/07/2005CN1664300A Roller cone drill bits with enhanced drilling stability and extended life of associated bearings and seals
09/06/2005US6938710 Bit head retaining system and method of installing a bit head in a percussion drill
09/01/2005WO2005080742A1 Casing and liner drilling bits, cutting elements therefor, and methods of use
09/01/2005WO2005080741A1 Mud debris diverter for earth-boring bit
09/01/2005US20050189149 Multi-lobed cutter element for drill bit
09/01/2005US20050189148 Nozzle bore for high flow rates
09/01/2005US20050188981 Diamond blade having rim type cutting tip for use in grinding or cutting apparatus
09/01/2005DE10357505B4 Anschlussstück mit verbesserter Struktur zur Verwendung mit einem Kernbohrer sowie Kernbohrer und Anschlussstückbaugruppe mit einem derartigen Anschlussstück Fitting with an improved structure for use with a core drill and core drill and connector assembly with such a connecting piece
09/01/2005DE102004005238B3 Device for producing holes in the ground for anchoring and posts comprises an endless screw having several helix cutouts arranged in a part of the screw helix surfaces arranged behind the crown
08/2005
08/31/2005CN2721851Y Downhole air and liquid injector of spiral borehole pump injected concrete
08/31/2005CN2721850Y Drilling bit for deformed holes
08/31/2005CN1662364A Self sharpening polycrystalline diamond compact with high impact resistance
08/30/2005US6935444 Superabrasive cutting elements with cutting edge geometry having enhanced durability, method of producing same, and drill bits so equipped
08/30/2005US6935443 Mini disk bit
08/30/2005US6935441 Drill bits with reduced exposure of cutters
08/30/2005CA2199780C Rock bit with hardfacing material incorporating spherical cast carbide particles
08/30/2005CA2196494C Hard facing material for rock bits
08/25/2005WO2005078231A1 Tool and method for drilling, reaming and cutting
08/25/2005WO2005061181A3 Polycrystalline diamond abrasive elements
08/25/2005US20050185503 Extrusion auger with removable auger segments and removal tool
08/25/2005US20050183893 Indexable cutting inserts and methods for producing the same
08/25/2005US20050183892 Casing and liner drilling bits, cutting elements therefor, and methods of use
08/25/2005US20050183891 Tool and method for drilling, reaming, and cutting
08/25/2005US20050183888 Hydrodynamic pump passages for rolling cone drill bit
08/24/2005EP1565642A1 Tool insert
08/24/2005CN1657271A Extrusion auger with removable auger segments and removal tool
08/23/2005US6933049 Abrasive tool inserts with diminished residual tensile stresses and their production
08/23/2005US6932172 Rotary contact structures and cutting elements
08/23/2005CA2261486C Method for forming a non-uniform interface adjacent ultra hard material
08/18/2005WO2005074493A2 Anti-tracking earth boring bit with selected varied pitch for overbreak optimization and vibration reduction
08/18/2005US20050178589 Mud diverter for earth-boring bit
08/18/2005US20050178588 Mud debris diverter for earth-boring bit
08/18/2005US20050178587 Cutting structure for single roller cone drill bit
08/18/2005CA2553052A1 Anti-tracking earth boring bit with selected varied pitch for overbreak optimization and vibration reduction
08/17/2005EP1564367A1 Earth displacement drill
08/17/2005EP1564365A2 Drill bit
08/17/2005CN2718198Y Drill bit short joint capable of generating water hammering pressure pulsation under well
08/17/2005CN2718197Y Rotary pulse nozzle
08/17/2005CN1214885C Perforating drill
08/17/2005CA2496199A1 Retrievable center bit
08/16/2005US6929079 Drill bit cutter element having multiple cusps
08/16/2005US6929078 Apparatus for use in enlarging a borehole
08/16/2005US6929077 Boring head, roller cutter and saddle for a boring head for rotary drilling
08/16/2005US6929076 Bore hole underreamer having extendible cutting arms
08/16/2005CA2487155C Hydraulic underreamer and sections for use therein
08/11/2005DE102004003898A1 Verdrängerbohrer Displacement drill
08/10/2005EP1561395A2 Device for manufacturing brushes
08/10/2005EP1561002A1 An improved rotary roller reamer
08/10/2005CN2716486Y PDC bit
08/10/2005CN2716485Y Drilling bit of piling drilling rig
08/10/2005CN2716484Y Pressing and pouring drilling bit
08/10/2005CN2716483Y Downhole vibrodrilling tool induced by hydraulic pulse
08/10/2005CN1652910A Drill bit
08/10/2005CN1651711A Bottom hole hammer reverse circulation follow pipe drill
08/09/2005US6926104 Drill crown
08/09/2005US6926100 Hole reaming apparatus and method
08/09/2005US6926099 Drill out bi-center bit and method for using same
08/04/2005WO2005071210A1 Single mill casing window cutting tool
08/04/2005WO2005071209A1 Positive displacement drill
08/04/2005US20050168050 Device for manufacturing brushes
08/04/2005US20050167162 Novel cutting element orientation or geometry for improved drill bits
08/04/2005US20050167161 Anti-tracking earth boring bit with selected varied pitch for overbreak optimization and vibration reduction
08/04/2005US20050167158 One-step directional coring or drilling system
08/04/2005DE10354543B3 Dualphasenhartstoff, Verfahren zu seiner Herstellung und dessen Verwendung Dual phase hard material, process for its preparation and its use
08/04/2005DE102004017286A1 Drilling/chiseling tool used for machining concrete, rock and masonry comprises a hard metal cutting element with a first and a second active region
08/03/2005EP1558832A1 A reamer assembly
08/03/2005CN1648403A Synergy drilling bit
08/02/2005US6923276 Streamlined mill-toothed cone for earth boring bit
07/2005
07/28/2005US20050165592 Methods for designing single cone bits and bits made using the methods
07/28/2005US20050165589 Bending moment
07/28/2005US20050161264 Percussion drill bit and a button therefor
07/28/2005US20050161237 Method of cleaning hole diggers and spot cultivators and hole digger cleaning device
07/28/2005US20050161035 Cutting tools with two-slope profile
07/28/2005DE10361501A1 Bohrwerkzeug Drilling tool
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