| Patents for E21B 10 - Drill bits (19,464) |
|---|
| 04/24/2013 | CN103061677A Rotary type cutting tooth, rotary drilling tool and rotary drilling rig |
| 04/24/2013 | CN103061676A Ploughing-cutting type diamond bit |
| 04/24/2013 | CN102251522B Filling pile coring method and combined concrete coring device |
| 04/24/2013 | CN101974905B Pile-embedding method for hollow pile and auger drill for implementing same |
| 04/24/2013 | CN101166885B A drilling tool |
| 04/23/2013 | US8424618 Auger boring machine |
| 04/23/2013 | CA2644442C Automated steerable hole enlargement drilling device and methods |
| 04/23/2013 | CA2478443C Releasable auger tooth with shock-absorbing retaining means |
| 04/18/2013 | WO2013056047A1 Polycrystalline compacts including grains of hard material, earth boring tools including such compacts, and methods of forming such compacts and tools |
| 04/18/2013 | WO2013055931A1 Use of tungsten carbide tube rod to hard-face pds matrix |
| 04/18/2013 | WO2013055753A2 Dispersion of hardphase particles in an infiltrant |
| 04/18/2013 | WO2013055680A1 Combined field assisted sintering techniques and hthp sintering techniques for forming polycrystalline diamond compacts and earth-boring tools, and sintering systems for performing such methods |
| 04/18/2013 | WO2013019421A3 Extruded powder metal compact |
| 04/18/2013 | WO2012088323A3 Earth removal member with features for facilitating drill-through |
| 04/18/2013 | US20130092455 Oblique face polycrystalline diamond cutter and drilling tools so equipped |
| 04/18/2013 | US20130092454 Polycrystalline compacts including grains of hard material, earth-boring tools including such compacts, and methods of forming such compacts and tools |
| 04/18/2013 | US20130092453 Use of tungsten carbide tube rod to hard-face pdc matrix |
| 04/18/2013 | US20130092452 Polycrystalline diamond compacts, related products, and methods of manufacture |
| 04/18/2013 | US20130092451 Polycrystalline diamond compacts, related products, and methods of manufacture |
| 04/18/2013 | US20130092450 Dispersion of hardphase particles in an infiltrant |
| 04/18/2013 | US20130092449 Low coefficient of thermal expansion cermet compositions |
| 04/18/2013 | US20130092448 Bearing Assembly for Rotary Drills |
| 04/18/2013 | US20130092446 Stabilizer subs for use with expandable reamer apparatus, expandable reamer apparatus including stabilizer subs and related methods |
| 04/18/2013 | US20130092444 Cutting tool integrated in a drillstring |
| 04/18/2013 | US20130092442 Full closure core catcher |
| 04/18/2013 | DE102011090063A1 Hammerbohrkrone Hammerbohrkrone |
| 04/18/2013 | DE102011084436A1 Hammerbohrkrone Hammerbohrkrone |
| 04/18/2013 | CA2852223A1 Use of tungsten carbide tube rod to hard-face pdc matrix |
| 04/17/2013 | CN202882770U Polycrystal diamond composite tooth |
| 04/17/2013 | CN202882769U Portable drilling sampling drill bit |
| 04/17/2013 | CN202882768U Rigid body polycrystalline diamond compact (PDC) centerless drill for micro-drilling experiment |
| 04/17/2013 | CN202882767U Polycrystalline diamond compact (PDC) bit |
| 04/17/2013 | CN202882766U Expanding drill bit |
| 04/17/2013 | CN202882765U Skeleton type lip-shaped bearing seal structure for roller cutter bit |
| 04/17/2013 | CN103052738A Hard Face Structure, Body Comprising Same And Method For Making Same |
| 04/17/2013 | CN103046872A Combined multistage mud crushing drill |
| 04/17/2013 | CN103046871A Hydra-mechanical reducing bit broaching while drilling |
| 04/17/2013 | CN103045985A Surface strengthening and protection process for steel-body PDC drill bit |
| 04/17/2013 | CN101956532B Rotary roller reamer |
| 04/17/2013 | CN101809247B Rotary cutter for tunnel boring machine |
| 04/17/2013 | CN101395335B Polycrystalline abrasive composite cutter |
| 04/16/2013 | US8419814 Polycrystalline abrasive compacts |
| 04/16/2013 | US8418785 Fixed cutter bit for directional drilling applications |
| 04/16/2013 | US8418784 Central cutting region of a drilling head assembly |
| 04/16/2013 | CA2676459C Method and apparatus for collecting drill bit performance data |
| 04/11/2013 | WO2013052640A1 Graphite coated metal nanoparticles for polycrystalline diamond compact synthesis |
| 04/11/2013 | WO2013052554A1 Wellbore conditioning system |
| 04/11/2013 | WO2013009496A3 Downhole cutting tool and method |
| 04/11/2013 | WO2012159947A3 Rock drill having relief grooves |
| 04/11/2013 | WO2012159881A3 Rock drill |
| 04/11/2013 | US20130088364 Method and apparatus for making resistivity measurements in a wellbore |
| 04/11/2013 | US20130087391 Fixed bladed drill bit cutter profile |
| 04/11/2013 | US20130087390 Reaming shell for mining |
| 04/11/2013 | US20130087386 Expandable apparatus and related methods |
| 04/11/2013 | CA2850795A1 Wellbore conditioning system |
| 04/10/2013 | EP2576955A1 Rotational drill bits and drilling apparatuses including the same |
| 04/10/2013 | CN202866660U Drilling machine drill bit and long spiral drilling machine utilizing the same |
| 04/10/2013 | CN202866659U Novel three-wing anchoring rod drill bit |
| 04/10/2013 | CN202866658U Assembling type hole dilating drill |
| 04/10/2013 | CN202866644U Way-type drilling unit of roller cone and DTH hammer |
| 04/10/2013 | CN103038380A 多晶金刚石 Polycrystalline diamond |
| 04/10/2013 | CN103032030A Drill bit of pile machine |
| 04/10/2013 | CN103032029A Dual-torque transmission concentric tube-following drilling tool |
| 04/10/2013 | CN103032028A TC (tungsten carbide) bearing |
| 04/10/2013 | CN103032027A 牙轮钻头及其制造方法 Cone bit and manufacturing method thereof |
| 04/10/2013 | CN103032026A Protective inserts for a roller cone bit |
| 04/10/2013 | CN103028731A Hot-press diamond-impregnated drill bit and manufacturing method thereof as well as application of hot-press diamond-impregnated drill bit to strong-abrasiveness hard formation |
| 04/10/2013 | CN103026827A Drill of V-shaped tree pit digging machine |
| 04/10/2013 | CN101563520B System for steering a drill string |
| 04/09/2013 | US8413746 Rolling cutter |
| 04/04/2013 | WO2013044460A1 Tricone rock bit for horizontal wells and hard formation wells |
| 04/04/2013 | WO2012148704A3 Casing end tool |
| 04/04/2013 | WO2012115837A3 Methods of forming polycrystalline compacts, cutting elements and earth-boring tools |
| 04/04/2013 | WO2012072513A3 Improvements in heat flow control for molding downhole equipment |
| 04/04/2013 | US20130081882 Method of characterizing a material using three dimensional reconstruction of spatially referenced characteristics and use of such information |
| 04/04/2013 | US20130081881 Protective inserts for a roller cone bit |
| 04/04/2013 | US20130081880 Drill bit design for mitigation of stick slip |
| 04/04/2013 | US20130081878 Methods and Apparatus for Coring |
| 04/04/2013 | US20130081877 Extendable pilot bit for barrel cutter |
| 04/03/2013 | CN202850872U Scraper type polycrystalline diamond compact (PDC) drill bit |
| 04/03/2013 | CN202850871U Double-bit drilling device for deep frozen earth of mine |
| 04/03/2013 | CN202850870U Flatbed cemented carbide substrate for synthetic diamond spherical tooth clad sheet |
| 04/03/2013 | CN202850869U Ground auger bit |
| 04/03/2013 | CN202850868U Combined type diamond-impregnated comprehensive bit |
| 04/03/2013 | CN202850867U Coring drill for drilling |
| 04/03/2013 | CN202850866U Module cutting tooth drill with drilling specific pressure controllable |
| 04/03/2013 | CN202850865U Module cutting teeth with drilling specific pressure controllable |
| 04/03/2013 | CN202850864U Down-the-hole drill bit refined forge part with powder groove |
| 04/03/2013 | CN202850863U Tricone bit oil-storage and compensatory pressure-balance system |
| 04/03/2013 | CN202850862U Chambering and soil borrowing drill |
| 04/03/2013 | CN202850861U Lateral extension drilling device for mine support |
| 04/03/2013 | CN202850852U Rock-core drilling machine |
| 04/03/2013 | CN103025418A Polycrystalline superhard material |
| 04/03/2013 | CN103015905A Double-gear bottom-spray type diamond bit |
| 04/03/2013 | CN103015904A Sandstone soil extrusion taper-shaped sleeve diamond bit |
| 04/03/2013 | CN103015903A Fabrication method for hot pressing diamond bit with added aluminium oxide hollow balls |
| 04/03/2013 | CN103015902A Double-gear diamond bit |
| 04/03/2013 | CN103015901A Reamer and installation method and operation method thereof |
| 04/03/2013 | CN103015900A Tooth for roller bits |
| 04/03/2013 | CN103015899A Mixed drilling bit with enhanced core part cutting function |