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)
04/2010
04/01/2010WO2009140122A3 Diamond impregnated bits and method of using and manufacturing the same
04/01/2010WO2009140121A3 Impregnated drill bit
04/01/2010WO2009006510A3 Pdc cutter with oval cross-section
04/01/2010US20100078227 Bar Trimmers On Disk Bit
04/01/2010US20100078226 Self Sharpening Steel Tooth Cutting Structure
04/01/2010US20100078225 Steel Tooth Disk With Hardfacing
04/01/2010US20100078224 Ball hole welding using the friction stir welding (fsw) process
04/01/2010CA2736542A1 Downhole vibration monitoring for reaming tools
04/01/2010CA2736188A1 Rock drill bit
03/2010
03/31/2010EP2167780A1 Rotary drill bit with gage pads having improved steerability and reduced wear
03/31/2010EP2167779A1 A wired smart reamer
03/31/2010EP2167696A2 Earth boring drill bits made from a low-carbon, high-molybdenum alloy
03/31/2010CN201433718Y Horizontal directional through-passing drill bit with debris discharging chute structure
03/31/2010CN201433717Y Horizontal directional through-passing drill bit with reverse nozzle
03/31/2010CN201433716Y Small-bore expanding drill
03/31/2010CN201433715Y Core-storing circular engineering roller bit
03/31/2010CN101688435A Hydraulic breaker assembly
03/31/2010CN101688434A Rotary drill bit with gage pads having improved steerability and reduced wear
03/30/2010US7686106 Rock bit and inserts with wear relief grooves
03/30/2010US7686105 Drill, wall protector and drilling method
03/30/2010US7686104 Rolling cone drill bit having cutter elements positioned in a plurality of differing radial positions
03/30/2010US7686103 Drill bit with radially expandable cutter, and method of using same
03/30/2010CA2576072C High-strength, high-toughness matrix bit bodies
03/30/2010CA2551393C Graded hardfacing for drill bits
03/25/2010WO2010033742A2 Method and apparatus for the automated application of hardfacing material to rolling cutters of earth-boring bits
03/25/2010WO2010033097A1 Earth-boring cutter mount and assembly
03/25/2010WO2009152194A3 Composite metal, cemented carbide bit construction
03/25/2010WO2008144633A3 Steel tooth drill bit with improved tooth breakage resistance
03/25/2010US20100071964 Thick Pointed Superhard Material
03/25/2010US20100071963 Staggered Compact Row on Same Land
03/25/2010US20100071962 Drill Bit With Adjustable Steering Pads
03/25/2010US20100071961 Bit leg outer surface processing using friction stir welding (fsw)
03/25/2010US20100071960 System, Method and Apparatus for Composite Seal Gland Insert in Roller Cone Rock Bit
03/25/2010US20100071959 Threaded cone retention system for roller cone bits
03/25/2010US20100071956 Drill Bit With Adjustable Axial Pad For Controlling Torsional Fluctuations
03/25/2010DE112008000158T5 Bohrspitze und Einzeldurchlauf-Bohrvorrichtung Drill bit and single pass drilling apparatus
03/24/2010EP2165039A1 A device for drilling in earth-layers and rock
03/24/2010CN201428383Y Diamond composite piece
03/24/2010CN201428382Y Magnetic type metallic seal device for rock bit
03/24/2010CN201428129Y Heterotypic cement soil purdah stake stirring and directional jetting with long spiral and drilling tool for construction
03/24/2010CN101680273A Superabrasive cutting elements with enhanced durability and increased wear life, and drilling apparatus so equipped
03/24/2010CN101680272A Fixed cutter bit and blade for a fixed cutter bit and methods for making the same
03/24/2010CN101680271A Hammer bit
03/24/2010CN101676755A Laser positioning device
03/24/2010CN101676515A High pneumatic down-the-hole bit
03/24/2010CN100595418C Stone inclusion soil abrasive-proof anti-impact drill bit
03/24/2010CN100595417C Method of producing polycrystal diamond complex sheet drill blank bits
03/24/2010CN100595416C Roller cone drill bits with enhanced cutting elements and cutting structures
03/23/2010US7681673 Drill bit and cutting element having multiple cutting edges
03/23/2010US7681671 Drilling apparatus having in-line extending wings and driving method thereof
03/23/2010US7681670 Two-cone drill bit
03/23/2010US7681669 Polycrystalline diamond insert, drill bit including same, and method of operation
03/23/2010US7681668 Shrink-fit sleeve assembly for a drill bit, including nozzle assembly and method therefor
03/23/2010US7681667 Drilling apparatus
03/23/2010US7681666 Expandable reamer for subterranean boreholes and methods of use
03/23/2010CA2539097C Steerable bit assembly and methods
03/18/2010WO2010028496A1 System and method for geothermal conduit loop in-ground installation and soil penetrating head therefor
03/18/2010US20100065339 Thick Pointed Superhard Material
03/18/2010US20100065338 Thick Pointed Superhard Material
03/18/2010US20100065337 Method and Apparatus for the Automated Application of Hardfacing Material to Rolling Cutters of Earth-Boring Drill Bits
03/18/2010US20100065334 Turbine Driven Hammer that Oscillates at a Constant Frequency
03/18/2010US20100065332 Method for Drilling with a Fixed Bladed Bit
03/18/2010US20100065331 Auger boring machine
03/18/2010US20100065264 Rotor underreamer, section mill, casing cutter, casing scraper and drill string centralizer
03/17/2010CN101675207A Release device
03/17/2010CN101675205A High productivity core drilling system
03/17/2010CN101672163A PDC drill bit suitable for drilling high abrasive stratum
03/17/2010CN101672162A Inclination-resisting PDC drill bit
03/17/2010CN101672161A Drag drill bit
03/16/2010US7677338 System, method, and apparatus for passive and active updrill features on roller cone drill bits
03/16/2010US7677333 Drill bit with multiple cutter geometries
03/12/2010CA2639648A1 System and method for geothermal conduit loop in-ground installation and soil penetrating head therefor
03/11/2010WO2010028244A2 Apparatus and system to allow tool passage ahead of a bit
03/11/2010WO2010027840A2 Cutter pocket inserts
03/11/2010WO2010025500A1 Pilot bit
03/11/2010WO2009149158A3 Methods of attaching a shank to a body of an earth boring tool including a load bearing joint and tools formed by such methods
03/11/2010WO2009149157A3 Methods of forming earth-boring tools using geometric compensation and tools formed by such methods
03/11/2010WO2009140400A3 Sonic drill bit for core sampling
03/11/2010WO2009136385A3 Drill bit head for percussion drilling apparatus
03/11/2010WO2009132179A3 Methods, systems, and bottom hole assemblies including reamer with varying effective back rake
03/11/2010WO2009120750A4 Stabilizer and reamer system having extensible blades and bearing pads and method of using same
03/11/2010US20100059290 Apparatus and system to allow tool passage ahead of a bit
03/11/2010US20100059289 Cutting Element with Low Metal Concentration
03/11/2010US20100059288 Cutting Element Attached to Downhole Fixed Bladed Bit at a Positive Rake
03/11/2010US20100059287 Cutter geometry for high rop applications
03/11/2010US20100059286 Drill Bit and Cutter Element Having Chisel Crest With Protruding Pilot Portion
03/11/2010US20100059283 Ambient-activated switch for downhole operations
03/11/2010US20100059280 Feed mechanism for drilling systems
03/11/2010CA2735938A1 Apparatus and system to allow tool passage ahead of a bit
03/10/2010CN201420504Y Orientation nozzle for oil drill bit
03/10/2010CN201420503Y Sintered diamond drill head capable of being drilled into hard and compact slipping stratum
03/10/2010CN101666212A Nozzle for drill bits
03/10/2010CN101666211A Pneumatic impactor impacting inversely
03/10/2010CN101666210A Reamer bit of bored well
03/09/2010US7673709 Earth-boring bit with shear cutting elements
03/09/2010US7673708 Ball-activated mechanism for controlling the operation of a downhole tool
03/09/2010US7673706 Down-the-hole hammer with pilot and method of enlarging a hole
03/09/2010CA2462340C Radial force distributions in rock bits
03/04/2010WO2010025313A2 Drilling out casing bits with other casing bits
03/04/2010WO2010024999A2 Cutting tool with water injection to the cutting bit shank
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