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)
07/2010
07/15/2010US20100175927 Earth drilling reamer with replaceable blades
07/15/2010US20100175926 Roller cones having non-integral cutting structures, drill bits including such cones, and methods of forming same
07/15/2010CA2747434A1 Hybrid drill bit with high pilot-to-journal diameter ratio
07/15/2010CA2746501A1 Hybrid drill bit with secondary backup cutters positioned with high side rake angles
07/14/2010CN201526273U Diamond compact drilling teeth
07/14/2010CN201526272U Drilling and expanding integrated electric drill head for mining coal
07/14/2010CN201526266U 10-meter deep hole drill drilling device with deviation prevention function
07/14/2010CN101778993A Digging tool, digging bit, and device
07/14/2010CN101778992A Drill bit gauge pad control
07/14/2010CN101775961A Special drill bit for tapered hole and application method of tapered hole
07/13/2010US7753144 Drill bit with a retained jack element
07/13/2010US7753143 Superabrasive element, structures utilizing same, and method of fabricating same
07/13/2010CA2585123C Dual-seal drill bit pressure communication system
07/13/2010CA2460069C Percussion drilling head
07/09/2010CA2650102A1 Earth drilling reamer with replaceable blades
07/08/2010WO2010078230A2 Drill bits with cutters to cut high side of wellbores
07/08/2010WO2010078182A2 Engineered bearing surface for rock drilling bit
07/08/2010WO2010078180A2 Drill bits with a fluid cushion for reduced friction and methods of making and using same
07/08/2010WO2010078130A1 Method of manufacturing and repairing fixed-cutter drag-type rotary tools with cutting control structures
07/08/2010WO2010078033A2 All-conditions tunnel boring machine
07/08/2010WO2010077838A2 Drillable bit nozzle retainer with interchangeable nozzle capability
07/08/2010WO2010077169A2 Blade-type drill bit
07/08/2010WO2010056641A3 Pilot reamer with composite framework
07/08/2010WO2010045171A3 Bit based formation evaluation using a gamma ray sensor
07/08/2010WO2010042797A3 Drill bit with adjustable axial pad for controlling torsional fluctuations
07/08/2010US20100170720 Drill bit
07/08/2010CA2748505A1 Method of manufacturing and repairing fixed-cutter drag-type rotary tools with cutting control structures
07/07/2010CN201521251U Mining combined drill
07/07/2010CN201521250U Rotary drilling bit for rotary drilling rig
07/07/2010CN201521249U Polycrystalline diamond compact matrix
07/07/2010CN201521248U Impregnated diamond bit with protective steel body
07/07/2010CN201521247U Grouting drill bit with check valve
07/07/2010CN201520972U Soil-cutting needle-type stirring pile bit
07/07/2010CN101772616A Excavation device
07/06/2010US7748475 Earth boring drill bits with casing component drill out capability and methods of use
07/06/2010US7748466 Coiled tubing wellbore drilling and surveying using a through the drill bit apparatus
07/06/2010CA2400449C Self-penetrating drilling method and thrust-generating tool for implementing same
07/01/2010WO2010075168A2 Earth-boring particle - matrix rotary drill bit and method of making the same
07/01/2010WO2010075154A2 Methods of forming bodies for earth boring drilling tools comprising molding and sintering techniques, and bodies for earth-boring tools formed using such methods
07/01/2010WO2010075153A2 Cutting removal system for pdc drill bits
07/01/2010WO2010045170A4 Drill bit with continuously sharp edge cutting elements
07/01/2010WO2010045167A3 Drill bit with continously sharp edge cutting elements
07/01/2010WO2010045165A3 Drill bit with continuously sharp edge cutting elements
07/01/2010WO2010036833A3 Steel tooth disk with hardfacing
07/01/2010WO2010036832A3 Downhole vibration monitoring for reaming tools
07/01/2010WO2010036569A3 Novel hardmetal for use in oil and gas drilling applications
07/01/2010WO2009061766A3 Methods and apparatuses for forming cutting elements having a chamfered edge for earth-boring tools
07/01/2010US20100163314 Rock drill
07/01/2010US20100163313 Engineered Bearing Surface For Rock Drilling Bit
07/01/2010US20100163312 Rotary Drill Bits with Gage Pads Having Improved Steerability and Reduced Wear
07/01/2010US20100163310 Method of manufacturing and repairing fixed-cutter drag-type rotary tools with cutting control structures
07/01/2010US20100163307 Drill Bits With a Fluid Cushion For Reduced Friction and Methods of Making and Using Same
07/01/2010CA2747738A1 Methods of forming bodies for earth-boring drilling tools comprising molding and sintering techniques, and bodies for earth-boring tools formed using such methods
07/01/2010CA2747737A1 Cutting removal system for pdc drill bits
06/2010
06/30/2010EP2201208A1 Method and apparatus for rotary mining
06/30/2010CN201517372U Pneumatic punching and shaving drillbit for complicated mountainous regions
06/30/2010CN201517371U Pneumatic punching scraping drill bit of mountainous composite stratum
06/30/2010CN201517370U Adjustable drill bit of multidirectional soil-cement mixed pile
06/30/2010CN101765695A Hybrid drill bit and method of drilling
06/30/2010CN101245596B Multi-azimuth tridimensional stirring drill for mollisol or spongy soil reinforcing stirring pile
06/29/2010US7743857 Cutting elements of gage row and first inner row of a drill bit
06/29/2010US7743855 Drill bit with cutter element having multifaceted, slanted top cutting surface
06/29/2010US7743851 Method and rock drilling rig for hole drilling
06/24/2010WO2010071563A1 Drilling tool for percussive rock drilling as well as an expendable kit, a ring drill bit and a casing shoe therefor
06/24/2010WO2010070256A1 Drilling apparatus
06/24/2010WO2010070190A1 Method and apparatus for down-the-hole drilling
06/24/2010WO2010022325A3 Method of making an earth-boring metal matrix rotary drill bit
06/24/2010US20100155151 Multi-set pdc drill bit and method
06/24/2010US20100155150 Cutting Removal System for PDC Drill Bits
06/24/2010US20100155149 Method of Designing a Bottom Hole Assembly and a Bottom Hole Assembly
06/24/2010US20100155148 Earth-Boring Particle-Matrix Rotary Drill Bit and Method of Making the Same
06/24/2010US20100155147 Methods of enhancing retention forces between interfering parts, and structures formed by such methods
06/24/2010US20100155146 Hybrid drill bit with high pilot-to-journal diameter ratio
06/24/2010US20100155145 Hybrid drill bit with secondary backup cutters positioned with high side rake angles
06/24/2010CA2747096A1 Drilling apparatus
06/23/2010EP2199531A2 Drill head for stone drill
06/23/2010EP2198111A2 Cutting structures for earth-boring drill bits
06/23/2010EP2198110A1 Bit assembly
06/23/2010EP2198108A2 Hydrodynamic bearing assemblies, and hydrodynamic bearing apparatuses and motor assemblies using same
06/23/2010CN201513125U Novel nozzle for drilling bit
06/23/2010CN201513124U Plowing type diamond compound plate drill tooth
06/23/2010CN201513123U Extrusion unearthing type drill bit
06/23/2010CN201513122U Lateral wall reinforcing center drill rig of ropes
06/23/2010CN201513116U Rotary drilling tool and rotary drilling rig comprising same
06/23/2010CN1755061B Roller cone drill bits with optimized bearing structure
06/23/2010CN101748974A Polycrystalline diamond contact for well drilling and rock crushing tool
06/23/2010CN101748973A Drill head for hammer drill
06/23/2010CN101748972A Diamond bit and manufacturing method thereof
06/23/2010CN101748971A Well drill
06/23/2010CN101745988A Boring tool for rock
06/22/2010US7740090 Stress relief feature on PDC cutter
06/22/2010US7740089 Drilling tool with a cutting element that is configured as a plate or head
06/22/2010US7740088 Ultrasonic rotary-hammer drill
06/22/2010CA2586832C High performance rock bit grease
06/22/2010CA2453353C Steerable rotary drill bit assembly with pilot bit
06/17/2010WO2010068729A2 Bearing seal with improved contact width
06/17/2010WO2010068727A1 Real time dull grading
06/17/2010WO2010036834A3 Drill bit with adjustable steering pads
06/17/2010WO2010025313A4 Drilling out casing bits with other casing bits
06/17/2010US20100147596 Drillable Bit Nozzle Retainer with Interchangeable Nozzle Capability
1 ... 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 ... 195