| Patents for E21B 10 - Drill bits (19,464) |
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| 02/11/2014 | CA2745723C Method of monitoring wear of rock bit cutters |
| 02/11/2014 | CA2520319C Thermally stable diamond polycrystalline diamond constructions |
| 02/06/2014 | WO2014022536A1 Extended duration section mill and methods of use |
| 02/06/2014 | WO2014022339A1 Drill bit with electrohydraulically adjustable pads for controlling depth of cut |
| 02/06/2014 | WO2014022025A1 Near-bit borehole opener tool and method of reaming |
| 02/06/2014 | WO2014020021A2 Superhard constructions & methods of making same |
| 02/06/2014 | WO2013188688A3 Pcd cutters with improved strength and thermal stability |
| 02/06/2014 | US20140039854 Methods for modeling wear of fixed cutter bits and for designing and optimizing fixed cutter bits |
| 02/06/2014 | US20140034397 Downhole reamer asymmetric cutting structures |
| 02/06/2014 | US20140034396 Cutting elements with re-processed thermally stable polycrystalline diamond cutting layers, bits incorporating the same, and methods of making the same |
| 02/06/2014 | US20140034395 Drill head for a drill and drill |
| 02/06/2014 | US20140034394 Ball hole welding using the friction stir welding (fsw) process |
| 02/06/2014 | DE102012015372A1 Solid metal drill head for rock drill bit, has cavities that are covered partially in such a way that triple cavity coverage is provided in outer annular zone extended from outer periphery of cavity to intermediate periphery |
| 02/06/2014 | DE102012015371A1 Drill head for drill, such as rock drill, has main cutting edge which has rectilinear extending direction with radial-direction component, where main cutting edges have different lengths along extending directions |
| 02/06/2014 | DE102012015370A1 Drill head for drill bit such as rock drill, has free cutting surface with three main cutting edges, and set of points of intersections, where radial distances of points of intersections with regard to working rotation axis are different |
| 02/06/2014 | DE102012015369A1 Solid metal made drill bit for drill such as rock drill, has main drilling dust removal sectors having main sector angle, which are defined adjacently by rectilinear extending directions of main cutting edges |
| 02/05/2014 | EP2692983A1 Drill head for a drill and drill |
| 02/05/2014 | EP2692982A2 Near-bit borehole opener tool and method of reaming |
| 02/05/2014 | EP2691593A2 Cutting element having modified surface |
| 02/05/2014 | CN203420640U Primary domain controller (PDC) drill with stretched nozzle |
| 02/05/2014 | CN203420639U Coated nozzle |
| 02/05/2014 | CN203420638U Curved-surface type diamond compact drilling tooth |
| 02/05/2014 | CN203420637U PDC (polycrystalline diamond compact) drill bit |
| 02/05/2014 | CN203420636U Novel PDC (polycrystalline diamond compact) drill bit |
| 02/05/2014 | CN103562483A Functionally leached PCD cutter |
| 02/05/2014 | CN103561911A Super-hard structure, tool element and method of making same |
| 02/05/2014 | CN103556953A Bottom hole negative-pressure upward-going spray nozzle PDC drill bit |
| 02/05/2014 | CN103556952A Rotary-tooth drilling bit |
| 02/05/2014 | CN103556951A Casing windowing drill bit |
| 02/05/2014 | CN103556950A Large changing diameter double-drag-blade hole reaming drill |
| 02/05/2014 | CN103556949A Cone bearing sealing structure |
| 02/05/2014 | CN103556948A Churn compaction drill bit |
| 02/05/2014 | CN103556947A Coal mine underground self-suction abrasive jet flow drill bit and drilling method |
| 02/05/2014 | CN103556941A Downhole drilling assembly |
| 02/05/2014 | CN103556628A Spiral conical soil compaction pile construction method |
| 02/05/2014 | CN103556555A Nail-shaped bored pile compound foundation structure for reinforcing embankment soft foundation, and construction method thereof |
| 02/05/2014 | CN103556551A Dumbbell-shaped bored pile composite foundation structure used for reinforcing soft foundations of embankment and construction method thereof |
| 02/04/2014 | US8640792 Flexible directional drilling apparatus and related methods |
| 01/30/2014 | WO2013014192A3 Tips for pick tools and pick tools comprising same |
| 01/30/2014 | WO2012135257A3 Cutting element having modified surface |
| 01/30/2014 | US20140027182 Telescoping core barrel |
| 01/30/2014 | US20140027180 Drill Bit with Hydraulically-Activated Force Application Device for Controlling Depth-of-Cut of the Drill Bit |
| 01/30/2014 | US20140027179 Drill Bit with Electrohydraulically Adjustable Pads for Controlling Depth of Cut |
| 01/30/2014 | US20140027177 Drill Bit with a Force Application Device Using a Lever Device for Controlling Extension of a Pad From a Drill Bit Surface |
| 01/30/2014 | US20140027176 Drill Bit with a Force Application Using a Motor and Screw Mechanism for Controlling Extension of a Pad in the Drill Bit |
| 01/29/2014 | EP2689092A1 Directional drilling tool |
| 01/29/2014 | EP2688700A1 Polycrystalline diamond compact including a carbonate-catalyzed polycrystalline diamond body and applications therefor |
| 01/29/2014 | CN203412516U Hard alloy tooth and mining roller cone bit |
| 01/29/2014 | CN103541667A Flushing drill bit |
| 01/29/2014 | CN103541662A Novel full-hole reverse circulation down-hole hammer drill |
| 01/29/2014 | CN103541661A Reamer bit |
| 01/29/2014 | CN103541660A Composite type eccentric one-cone bit |
| 01/29/2014 | CN103541659A Single-cone compound drill bit |
| 01/29/2014 | CN103541658A Porous pipe horizontal rotary spraying drill bit |
| 01/29/2014 | CN103538153A 动力头 Power Head |
| 01/28/2014 | US8636448 Drilling apparatus, method, and system |
| 01/28/2014 | CA2804664C Hard face structure, body comprising same and method for making same |
| 01/28/2014 | CA2705668C Convex crested insert with deflected wedge surfaces |
| 01/23/2014 | WO2013003333A8 Ultrasound assisted electrochemical catalyst removal for superhard materials |
| 01/23/2014 | US20140020958 Rotational drill bits and drilling apparatuses including the same |
| 01/23/2014 | US20140020957 PDC Drill Bit With Flute Design For Better Bit Cleaning |
| 01/23/2014 | US20140020956 Cutting element apparatuses, drill bits including same, methods of cutting, and methods of rotating a cutting element |
| 01/22/2014 | EP2686515A2 Pressure coring assembly and method |
| 01/22/2014 | CN203403825U Assembly type coreless drill bit |
| 01/22/2014 | CN203403824U PDC bit |
| 01/22/2014 | CN203403823U 矩形孔钻机 Rectangular hole drilling rig |
| 01/22/2014 | CN103527189A High-pressure water drilling and cutting integrated machine |
| 01/22/2014 | CN103527100A Method for connecting polycrystalline diamond compact (PDC) bit sintering body with connector body |
| 01/22/2014 | CN103527099A PDC (polycrystalline diamond compact) bit for oil drilling |
| 01/22/2014 | CN103527098A Multi-top special-shaped structure alloy tooth |
| 01/22/2014 | CN103527097A Active-adjusting type composite drill bit |
| 01/22/2014 | CN103527096A Mining drilling and cutting integrated drill bit |
| 01/22/2014 | CN103527095A Drill bit accelerating device |
| 01/22/2014 | CN103527094A Tunnel drilling machine |
| 01/22/2014 | CN103527093A Jet-suction type reverse-circulation reamer for crossing of horizontal directional drilling |
| 01/16/2014 | WO2014012038A2 Improving drill bit stability using track-set depth of cut control elements |
| 01/16/2014 | WO2014011855A1 Thermally stable pcd with pcbn transition layer |
| 01/16/2014 | WO2014011463A1 Drilling system with flow control valve |
| 01/16/2014 | WO2014011197A1 Rotary drill bits with back-up cutiing elements to optimize bit life |
| 01/16/2014 | US20140014412 Polycrystalline diamond percussion drill bits using low thrust and torque for application with small diameter drill bits |
| 01/16/2014 | US20140014315 Modular downhole tool |
| 01/16/2014 | US20140013913 Thermally stable pcd with pcbn transition layer |
| 01/16/2014 | US20140013670 Methods of forming composite particles, compositions of matter comprising composite particles, and methods of forming earth-boring tools |
| 01/16/2014 | DE112012000996T5 Fluidbohrkopf mit Gleit-Kalibrierring Fluid drilling head with sliding sizing |
| 01/16/2014 | DE112012000593T5 Nichtmagnetisches Hartauftragsmaterial Non-Magnetic hardfacing material |
| 01/15/2014 | EP2685006A2 Cutting head with a retractable threading tooth actuated by a rack/gear system |
| 01/15/2014 | CN203394359U Butt bit for guide hole crossing by long-range horizontal directional drilling |
| 01/15/2014 | CN203394358U High-temperature resistant drill |
| 01/15/2014 | CN203394357U Cemented carbide coal drill piece, claw drill bit for coal mine drilling and drilling tool for coal mine drilling |
| 01/15/2014 | CN203394356U Abrasion-resistant tool |
| 01/15/2014 | CN203394355U Positively rotating and reversely cutting PDC combined drill |
| 01/15/2014 | CN203394354U Cone bit of spherical fixing sleeve bearing |
| 01/15/2014 | CN203394353U Wedge-shaped diamond and hard alloy composite tooth |
| 01/15/2014 | CN203394352U Conical-ball-shaped diamond-hard alloy composite tooth |
| 01/15/2014 | CN203394342U Soil perforating machine |
| 01/15/2014 | CN103510863A Rotatable hydraulic jet drill bit |
| 01/15/2014 | CN103510862A High-strength drill bit for exploratory drilling |
| 01/15/2014 | CN103510861A Stepped drill bit for exploration drilling |
| 01/15/2014 | CN103510860A Staggered tooth-shaped drill bit for exploratory drilling |
| 01/15/2014 | CN103510859A Module cutting tooth drill with controllable drilling specific pressure |