| Patents for E21B 10 - Drill bits (19,464) |
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| 06/24/2014 | US8757881 Bearing package for a progressive cavity pump |
| 06/24/2014 | US8757299 Cutting element and method of forming thereof |
| 06/24/2014 | US8757298 Method and apparatus for dual speed, dual torque drilling |
| 06/24/2014 | US8757297 Rotary drill bits including bearing blocks |
| 06/24/2014 | US8757296 Methods, systems, and apparatus for processing drill tools |
| 06/24/2014 | US8757293 Air hammer coring apparatus and method |
| 06/24/2014 | US8757291 At-bit evaluation of formation parameters and drilling parameters |
| 06/19/2014 | WO2014092720A1 Rotary drill bit |
| 06/19/2014 | WO2013096365A3 A drill bit for use in boring a wellbore and subterranean fracturing |
| 06/19/2014 | US20140166371 Selectively Leached Cutter |
| 06/19/2014 | US20140165476 Polycrystalline diamond construction and method for making same |
| 06/18/2014 | EP2742203A1 Pdc disc cutters and rotary drill bits utilizing pdc disc cutters |
| 06/18/2014 | EP2742165A1 Steel for manufacturing carburized steel parts, carburized steel parts produced with said steel, and method for manufacturing same |
| 06/18/2014 | CN203655346U 一种空化射流割缝卸压装置 A Space-based jet cutting pressure relief device |
| 06/18/2014 | CN203655167U 夹层齿轮形金刚石取芯钻头 Mezzanine gear-shaped diamond core drill |
| 06/18/2014 | CN203655166U 一种快速钻进的pdc钻头 A fast drilling pdc drill |
| 06/18/2014 | CN203655165U 一种套管开窗钻头 One kind of drill casing window |
| 06/18/2014 | CN203655164U 一种套管开窗钻头 One kind of drill casing window |
| 06/18/2014 | CN203655163U 一种旋挖钻机及其变径筒钻 One kind of rotary drilling rigs and drilling adjustable tube |
| 06/18/2014 | CN203655162U 一种泵吸反循环用的改进钻头 A pump suction reverse circulation drill Improvement |
| 06/18/2014 | CN203655161U 一种扇热快的钻头 One kind of fan heat faster drill |
| 06/18/2014 | CN103867133A Self-sharpening artificial-diamond-impregnated bit with continuous crushing capacity |
| 06/18/2014 | CN103867132A Diamond-impregnated geological prospecting coring bit with plowing and breaking functions |
| 06/18/2014 | CN103867131A Diamond compound cutting head |
| 06/18/2014 | CN103867130A Mechanical expanded bore pile drill bit |
| 06/18/2014 | CN103867129A Rotary drilling rig and drilling bucket thereof |
| 06/18/2014 | CN103867128A Indexable diamond compound blade clamping device |
| 06/18/2014 | CN103114812B Diamond compact annular concentric simultaneous casing drilling bit and working method thereof |
| 06/18/2014 | CN102678048B Multi-stage hydraulic punching drill |
| 06/18/2014 | CN102561432B Deep sand dredging device from earth surface of continental riverway |
| 06/18/2014 | CN102439258B Drilling equipment and attachment means for the same |
| 06/18/2014 | CN101999027B Sonic drill bit for core sampling |
| 06/17/2014 | US8752656 Method of designing a bottom hole assembly and a bottom hole assembly |
| 06/17/2014 | US8752655 Rock bit having a labyrinth seal/bearing protection structure |
| 06/17/2014 | US8752654 Drill bits with bearing elements for reducing exposure of cutters |
| 06/17/2014 | US8752649 Method and apparatus for reaming well bore surfaces nearer the center of drift |
| 06/17/2014 | CA2697838C Method and apparatus for rotary mining |
| 06/17/2014 | CA2656913C Pdc cutters with enhanced working surfaces adjacent a cavity |
| 06/17/2014 | CA2625500C Self actuating underreamer |
| 06/12/2014 | WO2014088946A1 Earth boring tool with improved arrangment of cutter side rakes |
| 06/12/2014 | WO2014088569A1 Providing a catlyst free diamond layer on drilling cutters |
| 06/12/2014 | WO2014086721A1 Superhard constructions & methods of making same |
| 06/12/2014 | WO2014086620A1 Rock bit tip and rock bit |
| 06/12/2014 | WO2013113551A3 Drill bit |
| 06/12/2014 | US20140158437 Polycrystalline diamond compacts |
| 06/12/2014 | US20140158436 Methods To Repair Worn Or Eroded PDC Cutters, Cutters So Repaired, And Use Of Repaired PDC Cutters In Drill Bits Or Other Tools |
| 06/12/2014 | US20140158430 Drilling tool, apparatus and method for underreaming and simultaneously monitoring and controlling wellbore diameter |
| 06/11/2014 | EP2740884A1 Rock bit tip and rock bit |
| 06/11/2014 | EP2740882A1 Drilling device and method for producing a borehole |
| 06/11/2014 | EP2739811A2 Compositions, methods of coating wellbore tools with such compositions, and wellbore tools coated with such compositions |
| 06/11/2014 | EP2739418A1 Super-hard construction and method for making same |
| 06/11/2014 | CN203640615U 流道表面具有贯通凹坑的抗泥包pdc钻头 Channel surface having a through pits anti-balling pdc drill |
| 06/11/2014 | CN203640614U 一种割裂用钻头 One kind of split drill |
| 06/11/2014 | CN203640613U 一种新型传动结构的金刚石钻头 A diamond drill new transmission structures |
| 06/11/2014 | CN203640612U 一字形锥度连接钎头 A drill head shaped taper connection |
| 06/11/2014 | CN203640611U 一种钻井用牙盘金刚石钻头 One kind of diamond drill drilling crankset |
| 06/11/2014 | CN203640610U 一种双锥度可变径旋扩钻具 One kind of double taper can be adjustable rotary drilling expansion |
| 06/11/2014 | CN203640609U 一种直筒型双锥度可变径旋扩钻具 One kind of straight-type double taper can be adjustable rotary drilling expansion |
| 06/11/2014 | CN203640608U 一种具有内锥的复合式单牙轮钻头 Having a single composite cone roller bit |
| 06/11/2014 | CN203640607U 一种复合式偏心单牙轮钻头 A composite eccentric single cone bit |
| 06/11/2014 | CN203640606U 混合密封牙轮钻头 Mixed sealing cone bit |
| 06/11/2014 | CN203640605U 一种o形圈金属环双向组合密封的储油单牙轮钻头 One kind of bi-metal ring o-ring seal oil combination of single cone bit |
| 06/11/2014 | CN103857869A Hole opener bearing arrangement |
| 06/11/2014 | CN103857868A Methods of controllably milling a window in a cased wellbore using a pressure differential to cause movement of a mill |
| 06/11/2014 | CN103850652A Process for inlaying alloy teeth of rock drilling bit |
| 06/11/2014 | CN103850651A Hydrocyclone leading device |
| 06/11/2014 | CN103321474B Hole-drilling pole-erecting vehicle |
| 06/11/2014 | CN102704857B Underground supercharging and accelerating system |
| 06/11/2014 | CN102628338B Novel roller bit sealing ring |
| 06/11/2014 | CN102149896B Earth-boring bit parts including hybrid cemented carbides and methods of making the same |
| 06/10/2014 | US8746376 Rotary drill bit including polycrystalline diamond cutting elements |
| 06/10/2014 | US8746375 Wellbore tools having superhydrophobic surfaces, components of such tools, and related methods |
| 06/10/2014 | US8746374 Method and apparatus for reducing lubricant pressure pulsation within a rotary cone rock bit |
| 06/10/2014 | US8746373 Methods of attaching a shank to a body of an earth-boring tool including a load-bearing joint and tools formed by such methods |
| 06/10/2014 | US8746371 Downhole tools having activation members for moving movable bodies thereof and methods of using such tools |
| 06/10/2014 | US8746368 Compliantly coupled gauge pad system |
| 06/10/2014 | US8746367 Apparatus and methods for detecting performance data in an earth-boring drilling tool |
| 06/05/2014 | WO2014085397A1 Eruption control in thermally stable pcd products |
| 06/05/2014 | WO2014082367A1 Adjustable drilling bucket of rotary drilling rig |
| 06/05/2014 | US20140151133 Earth boring tool with improved arrangement of cutter side rakes |
| 06/05/2014 | US20140151132 Rotary drag bits including abrasive-impregnated cutting structures |
| 06/05/2014 | US20140151131 Hybrid Drill Bit |
| 06/04/2014 | EP2737176A2 Tips for pick tools and pick tools comprising same |
| 06/04/2014 | EP2737156A2 Extruded powder metal compact |
| 06/04/2014 | EP2737155A2 Methods of coating wellbore tools and components having such coatings |
| 06/04/2014 | CN203626616U 一种液压扩眼器 A hydraulic reamer |
| 06/04/2014 | CN203626615U 直扩型扩孔钻 DSSS type reamer |
| 06/04/2014 | CN203626614U 变推力变径钻 Variable thrust adjustable drill |
| 06/04/2014 | CN203626613U 一种筒钻的牙轮钻头 One kind of cone bits drill tube |
| 06/04/2014 | CN203626612U 一种高强度钻具 A high strength drill |
| 06/04/2014 | CN203626611U 一种可纠正导井偏斜的竖井掘进机钻头结构 Well one kind corrects skewed guide shaft boring machine drills structure |
| 06/04/2014 | CN203625892U 长螺旋冲击桩机 The impact of long spiral pile driver |
| 06/04/2014 | CN103842607A Kerfing hybrid drill bit and other downhole cutting tools |
| 06/04/2014 | CN103842067A Fine polycrystalline diamond compact with a grain growth inhibitor layer between diamond and substrate |
| 06/04/2014 | CN103835660A Intelligent retraction type composite drill bit |
| 06/04/2014 | CN103835659A Drill capable of improving center scraps removal efficiency |
| 06/04/2014 | CN103835658A Double-tooth PDC drill bit high in drilling speed |
| 06/04/2014 | CN103835657A High-efficiency PDC drill bit |
| 06/04/2014 | CN103835656A PDC drill bit which is not easily blocked by rock fragments |
| 06/04/2014 | CN103835655A Low-resistance PDC drill bit |