| Patents for E21B 10 - Drill bits (19,464) |
|---|
| 03/19/2013 | CA2670181C Discrete element modeling of rock destruction under high pressure conditions |
| 03/14/2013 | WO2012149120A3 Methods of attaching rolling cutters in fixed cutter bits using sleeve, compression spring, and/or pin(s)/ball(s) |
| 03/14/2013 | WO2012138827A3 Apparatus for controlling drill bit depth of cut using thermally expandable materials |
| 03/14/2013 | WO2012012774A3 Polycrystalline diamond cutting element and method of using same |
| 03/14/2013 | DE112011101697T5 Zweirohriges Horizontalbohrsystem Zweirohriges Boring |
| 03/13/2013 | EP2567068A1 Method and apparatus to adjust weight-on-bit/torque-on-bit sensor bias |
| 03/13/2013 | EP2567056A2 Cutting elements, earth-boring tools, and methods of forming such cutting elements and tools |
| 03/13/2013 | EP2566645A1 Undercutting tool |
| 03/13/2013 | CN202788919U Mine drilling and cutting integrated outburst prevention and permeability increasing system |
| 03/13/2013 | CN202788746U Drilling tool device for drilling, grouting and wall protection |
| 03/13/2013 | CN202788631U Hydraulic jet drill |
| 03/13/2013 | CN202788630U Polycrystalline diamond compact (PDC) drill bit with sharp teeth |
| 03/13/2013 | CN202788629U Diamond hard alloy composite tooth for oil exploration and mining |
| 03/13/2013 | CN202788628U Polycrystalline diamond compact (PDC) bit tooth |
| 03/13/2013 | CN202788627U Tapper for mounting lamp on plaster board ceiling |
| 03/13/2013 | CN202788626U Drill bit of rotary drilling machine |
| 03/13/2013 | CN202788625U Drill bit for underground bridge plug drilling work |
| 03/13/2013 | CN202788624U Filling pile bottom reaming bit capable of adjusting bottom surface |
| 03/13/2013 | CN202788623U Rock reamer |
| 03/13/2013 | CN202788622U Horizontal directional drilling power broaching drilling tool provided with automatic resetting pressure relief device |
| 03/13/2013 | CN202788621U Bidirectional integrated spring energy storage sealing roller bit |
| 03/13/2013 | CN202788620U Vertical shaft drill tool with multiple independent absorbing mouths |
| 03/13/2013 | CN202788619U Integral drill bit for drilling and cutting |
| 03/13/2013 | CN202788618U Down-the-hole drill bit |
| 03/13/2013 | CN202787249U Gobi desert spiral ground pile |
| 03/13/2013 | CN102966326A Profiled salvage drill bit |
| 03/13/2013 | CN102966310A Induced flow device and method for water jet kerf in drilled hole |
| 03/13/2013 | CN102966309A High-pressure grinding material jet flow drill carriage device |
| 03/12/2013 | US8393820 Rotationally locked drive assembly for a VSI crusher |
| 03/12/2013 | US8393419 Superabrasive elements having indicia and related apparatus and methods |
| 03/12/2013 | US8393418 Rock bit having a seal gland with a conical sealing surface |
| 03/12/2013 | CA2702983C Impregnated rotary drag bit and related methods |
| 03/07/2013 | WO2013029349A1 Roller bit for rock-breaking by rotary-cutting |
| 03/07/2013 | WO2013029347A1 Composite bit with rotary cut rock-breaking function |
| 03/07/2013 | US20130056284 Element containing thermally stable polycrystalline diamond material and methods and assemblies for formation thereof |
| 03/07/2013 | DE19712181B4 Bohrkrone Drill bit |
| 03/07/2013 | CA2846276A1 Mechanical attachment of thermally stable diamond to a substrate |
| 03/06/2013 | EP2564022A2 At-bit evaluation of formation parameters and drilling parameters |
| 03/06/2013 | EP2564012A2 Pdc sensing element fabrication process and tool |
| 03/06/2013 | EP2564011A2 Methods of forming polycrystalline compacts |
| 03/06/2013 | EP2564010A2 Polycrystalline diamond compacts, cutting elements and earth-boring tools including such compacts, and methods of forming such compacts and earth-boring tools |
| 03/06/2013 | EP2564009A1 Bolt on drive assembly for a core drill with high strength spoked reinforcer |
| 03/06/2013 | CN202768056U Safety interlock device for ensuring water supply operation of drill bit |
| 03/06/2013 | CN202767892U Diamond polycrystalline diamond compact (PDC) bit port |
| 03/06/2013 | CN202767891U Non-coring bit with diamond clad sheet |
| 03/06/2013 | CN202767890U Pregnant insert type diamond drill for coring |
| 03/06/2013 | CN202767889U Diamond bit intersection cutting wing |
| 03/06/2013 | CN202767888U Hinged drill bit with inner center capable of being opened and closed |
| 03/06/2013 | CN202767887U Percussion drilling pore-forming rock sample extraction device |
| 03/06/2013 | CN202767886U Nozzle holder with changeable nozzle core for roller bit |
| 03/06/2013 | CN202767885U Hot melting drill pit of ice layer directional drilling |
| 03/06/2013 | CN202767884U Steel core structure in coring bit |
| 03/06/2013 | CN202767883U Drill without water plugging and drilling machine |
| 03/06/2013 | CN202767882U Diamond compact |
| 03/06/2013 | CN202767879U Large-scale earth-rock boring machine |
| 03/06/2013 | CN202767872U Hydraulic anchor drill of workover rig |
| 03/06/2013 | CN102959177A Cutting elements for earth-boring tools, earth-boring tools including such cutting elements, and methods of forming cutting elements for earth-boring tools |
| 03/06/2013 | CN102959176A Cutting elements for downhole cutting tools |
| 03/06/2013 | CN102959175A Downhole cutting tool having center beveled mill blade |
| 03/06/2013 | CN102959174A Cutting elements for downhole cutting tools |
| 03/06/2013 | CN102953686A Steel body type diamond-impregnated bit |
| 03/06/2013 | CN102953685A Drill bit for particle percussion drilling |
| 03/06/2013 | CN102953684A Drill rod with ream bit |
| 03/05/2013 | US8387725 Percussion drilling assembly and hammer bit with gage and outer row reinforcement |
| 03/05/2013 | US8387724 Rotary drill bit with nozzles designed to enhance hydraulic performance and drilling fluid efficiency |
| 02/28/2013 | WO2013028821A1 Fine polycrystalline diamond compact with a grain growth inhibitor layer between diamond and substrate |
| 02/28/2013 | WO2013028799A2 Downhole tool and method of use |
| 02/28/2013 | WO2013028256A2 Impregnated drilling tools including elongated structures |
| 02/28/2013 | WO2013027177A1 Shearer pick |
| 02/28/2013 | WO2012138638A3 Cool cutting polycrystalline diamond cutting element |
| 02/28/2013 | WO2012135497A3 Coating on pdc/tsp cutter for accelerated leaching |
| 02/28/2013 | WO2012024149A3 Rotational drill bits and drilling apparatuses including the same |
| 02/28/2013 | US20130048390 Superabrasive materials and methods of manufacture |
| 02/28/2013 | US20130048389 Fine polycrystalline diamond compact with a grain growth inhibitor layer between diamond and substrate |
| 02/28/2013 | US20130048388 Drill bit with cutting elements having functionally engineered wear surface |
| 02/28/2013 | US20130048387 Hard metal insert for a drill bit for percussion drilling and method for grinding a hard metal insert |
| 02/28/2013 | US20130048381 Drill bit-mounted data acquisition systems and associated data transfer apparatus and method |
| 02/28/2013 | CA2846022A1 Impregnated drilling tools including elongated structures |
| 02/28/2013 | CA2842378A1 Downhole tool and method of use |
| 02/27/2013 | EP2561171A2 Cutting elements for earth-boring tools, earth-boring tools including such cutting elements and related methods |
| 02/27/2013 | CN202755902U Reverse circulation double-pipe injection negative pressure drilling bit |
| 02/27/2013 | CN202755901U Novel tire-type diamond compact bit |
| 02/27/2013 | CN202755900U Impregnated diamond clad sheet drill |
| 02/27/2013 | CN202755899U Matrix impregnated diamond compact drill bit |
| 02/27/2013 | CN202755898U Shock-resistance primary domain controller (PDC) drill |
| 02/27/2013 | CN202755897U Special type drilling head capable of drilling into rock used for long spiral |
| 02/27/2013 | CN202755896U Integral type steel body diamond compact bit |
| 02/27/2013 | CN202755895U Broken glomerocryst impregnated bit arranged in order by hot pressing |
| 02/27/2013 | CN202755894U Novel percussion drill |
| 02/27/2013 | CN202755893U Gas drainage drill bit capable of being embedded with exhaust pipe |
| 02/27/2013 | CN102947538A Fracturing method to reduce tortuosity |
| 02/27/2013 | CN102947032A Undercutting tool |
| 02/27/2013 | CN102943681A Method and device for supporting weak adhesion bond soft rock roadway |
| 02/27/2013 | CN102943629A Double-acting superhard composite teeth strong lateral windowing drillbit and technology for producing same |
| 02/27/2013 | CN102943628A Double-layered casing windowing drillbit |
| 02/27/2013 | CN102943627A Single-corner punching drill bit for tree planting |
| 02/27/2013 | CN102943626A Impact rotary-cut drill bit and rock-entering drilling machine using same |
| 02/27/2013 | CN102943625A Reamer |
| 02/27/2013 | CN102943624A Adjustable drilling bucket of rotary drilling rig |
| 02/27/2013 | CN102943468A Multi-axial mixing pile device capable of reducing soil extrusion and application thereof |