| Patents for E21B 10 - Drill bits (19,464) |
|---|
| 07/30/2009 | US20090188724 Rolling Cone Drill Bit Having High Density Cutting Elements |
| 07/30/2009 | US20090188722 Drilling device for drilling and reaming of a hole |
| 07/30/2009 | US20090188719 Drilling apparatus having in-line extending wings and driving method thereof |
| 07/29/2009 | EP2082113A1 Protector for rock bit seals |
| 07/29/2009 | EP2082112A1 Down-the-hole hammer drill |
| 07/29/2009 | EP1649128B1 Device for drilling a bore in the ground |
| 07/29/2009 | CN101492998A Radial shrink-proof single-cone rotary drill bit |
| 07/29/2009 | CN100519983C Hydraulic underreamer and sections for use therein |
| 07/28/2009 | CA2650356A1 Pressurized fluid flow system for a reverse circulation hammer |
| 07/28/2009 | CA2533497C Pdc drill bit using optimized side rake angle |
| 07/28/2009 | CA2432246C System for overburden drilling |
| 07/23/2009 | WO2009091825A2 Drilling assembly, drilling reamer arm assembly, and methods of drilling |
| 07/23/2009 | US20090183925 Thermally stable polycrystalline diamond cutting elements and bits incorporating the same |
| 07/23/2009 | US20090183919 Downhole Percussive Tool with Alternating Pressure Differentials |
| 07/22/2009 | EP2079898A1 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 |
| 07/22/2009 | EP2079897A1 Bearing insert sleeve for roller cone bit |
| 07/22/2009 | CN201276973Y PDC drilling bit with teeth arrangement density enhanced by trimming teeth |
| 07/22/2009 | CN201276972Y Rear expanding drilling bit and rear expanding anchor bolt matched with the same |
| 07/22/2009 | CN201276971Y Drilling bit capable of improving drilling efficiency |
| 07/22/2009 | CN101490359A Excluder ring for earth-boring bit |
| 07/22/2009 | CN100516449C Slim-hole hydraulic controlled reducing reaming bit |
| 07/21/2009 | US7562726 Device for drilling a bore in the ground |
| 07/21/2009 | US7562725 Downhole pilot bit and reamer with maximized mud motor dimensions |
| 07/21/2009 | CA2487874C Expandable drilling tool |
| 07/21/2009 | CA2386425C Rock drill |
| 07/16/2009 | WO2009088176A2 Vibration hammer |
| 07/16/2009 | WO2009069903A3 Apparatus and method for excavating vertical hole |
| 07/16/2009 | WO2009064967A4 Earth-boring tools attachable to a casing string and methods for their manufacture |
| 07/16/2009 | US20090178856 Drill Bit and Cutter Element Having a Fluted Geometry |
| 07/16/2009 | US20090178855 Thermally stable polycrystalline diamond cutting elements and bits incorporating the same |
| 07/16/2009 | US20090178852 Drilling Assembly, Drilling Reamer Arm Assembly, And Methods Of Drilling |
| 07/16/2009 | CA2711527A1 Vibration hammer |
| 07/15/2009 | EP2078101A2 Articles having improved resistance to thermal cracking |
| 07/15/2009 | CN201273145Y Diamond composite sheet |
| 07/15/2009 | CN201273144Y High-wind pressure down-the-hole drill bit |
| 07/15/2009 | CN201273143Y Down-the-hole concentric following hole-expanding drilling tool |
| 07/15/2009 | CN101481994A Production method for impact drilling bit and products produced thereby |
| 07/15/2009 | CN101481993A Ultra-deep drilling bit apparatus for high tailing dam |
| 07/15/2009 | CN100513734C Method and system of injecting a fluid into a borehole ahead of the bit |
| 07/14/2009 | US7559383 Hard material drilling head |
| 07/14/2009 | US7559382 Hard material head and rotary percussion drill bit |
| 07/14/2009 | US7559381 Surface textures for earth boring bits |
| 07/14/2009 | CA2540619C Make-up control system for tubulars |
| 07/14/2009 | CA2517978C Drilling with casing latch |
| 07/09/2009 | WO2009086564A1 Earth bit with hub and thrust units |
| 07/09/2009 | WO2009086302A2 Oriented pyramid inserts |
| 07/09/2009 | WO2009086287A2 Reamer with balanced cutting structure for use in a wellbore |
| 07/09/2009 | WO2009086286A2 Reamer with stabilizers for use in a wellbore |
| 07/09/2009 | WO2009086280A2 Reamer with improved hydraulics for use in a wellbore |
| 07/09/2009 | WO2009086081A2 Silicon carbide composite materials, earth-boring tools comprising such materials, and methods for forming the same |
| 07/09/2009 | WO2009083596A2 Drilling method including a cutting tool disengagement step |
| 07/09/2009 | WO2009065523A3 Self-circulating drill bit |
| 07/09/2009 | WO2009006511A3 Earth boring drill bits made from a low-carbon, high-molybdenum alloy |
| 07/09/2009 | US20090173548 Polycrystalline ultra-hard compact constructions |
| 07/09/2009 | US20090173547 Ultra-hard and metallic constructions comprising improved braze joint |
| 07/09/2009 | US20090173546 Earth bit with hub and thrust units |
| 07/09/2009 | US20090173015 Polycrystalline Diamond Constructions Having Improved Thermal Stability |
| 07/09/2009 | CA2709672A1 Silicon carbide composite materials, earth-boring tools comprising such materials, and methods for forming the same |
| 07/09/2009 | CA2708651A1 Oriented pyramid inserts |
| 07/09/2009 | CA2646752A1 Ultra-hard and metallic constructions comprising improved braze joint |
| 07/09/2009 | CA2646374A1 Polycrystalline ultra-hard compact constructions |
| 07/09/2009 | CA2646370A1 Polycrystalline ultra-hard constructions with multiple support members |
| 07/08/2009 | EP2076652A1 Arrangement for foundation |
| 07/08/2009 | EP1792052A4 Integrated magnetic ranging tool |
| 07/08/2009 | CN201269050Y Diamond-impregnated bit |
| 07/08/2009 | CN201269049Y Diamond composite sheet drilling bit used for core extraction in unconsolidated formation |
| 07/08/2009 | CN201269048Y Steel tooth bit |
| 07/08/2009 | CN101479439A Reaming tool suitable for running on casing or liner and method of reaming |
| 07/08/2009 | CN101476445A CVD diamond layer overlapped diamond composite sheet for drilling and its production method |
| 07/08/2009 | CN100510309C Bit assembly for a hammering drill |
| 07/07/2009 | US7556668 Consolidated hard materials, methods of manufacture, and applications |
| 07/07/2009 | CA2552934C Thermally stable diamond inserts for gage and heel rows in roller cone bits |
| 07/02/2009 | WO2009046069A3 Drill bit for subterranean drilling |
| 07/02/2009 | US20090170414 Cryogenic Treatment Processes for Diamond Abrasive Tools |
| 07/02/2009 | US20090166094 Polycrystalline Diamond Materials Having Improved Abrasion Resistance, Thermal Stability and Impact Resistance |
| 07/02/2009 | US20090166093 Reamer With Stabilizers For Use In A Wellbore |
| 07/02/2009 | US20090166091 Drill bit and design method for optimizing distribution of individual cutter forces, torque, work, or power |
| 07/02/2009 | US20090166046 System and Method for Dynamic Sealing Of a Drill String |
| 07/01/2009 | EP2074277A2 Activating device for a downhole tool |
| 07/01/2009 | CN100507201C Drill bit, system, and method for drilling a borehole in an earth formation |
| 06/30/2009 | US7552783 Graded hardfacing for drill bits |
| 06/25/2009 | WO2009079331A2 Erosion resistant fluid passageways and flow tubes for earth-boring tools, methods of forming the same and earth-boring tools including the same |
| 06/25/2009 | WO2009046082A3 Cutting structures for earth-boring drill bits |
| 06/25/2009 | US20090159341 Reamer with balanced cutting structures for use in a wellbore |
| 06/25/2009 | US20090159340 Rock bit with vectored hydraulic nozzle retention sleeves |
| 06/25/2009 | US20090159338 Reamer With Improved Hydraulics For Use In A Wellbore |
| 06/25/2009 | US20090159335 Monitoring apparatus for core barrel operations |
| 06/25/2009 | US20090158898 Methods of manufacturing and repairing rotary drill bits including support elements affixed to the bit body at least partially defining cutter pocket recesses |
| 06/25/2009 | CA2708810A1 Erosion resistant fluid passageways and flow tubes for earth-boring tools, methods of forming the same and earth-boring tools including the same |
| 06/24/2009 | CN101466913A Rotary rock bit with hardfacing to reduce cone erosion |
| 06/24/2009 | CN101466912A Surface textures for earth boring bits |
| 06/24/2009 | CN101463710A Bidirectional guniting drilling bit with reversible rotation stirring function |
| 06/23/2009 | US7549912 Method of finishing cutting elements |
| 06/23/2009 | US7549491 Hard material bit |
| 06/23/2009 | US7549490 Arrangement of roller cone inserts |
| 06/23/2009 | US7549489 Jack element with a stop-off |
| 06/23/2009 | US7549488 Two-cone drill bit with enhanced stability |
| 06/23/2009 | US7549485 Expandable reamer apparatus for enlarging subterranean boreholes and methods of use |
| 06/23/2009 | CA2541478C Dynamically balanced cutting tool system |
| 06/18/2009 | WO2009058808A4 Drill bits and tools for subterranean drilling |