| Patents for E21B 10 - Drill bits (19,464) |
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| 01/07/2015 | CN204076534U 一种金刚石薄壁钻头基体连接盘 A line of diamond drill bit matrix lands |
| 01/07/2015 | CN104271884A 用于隧道钻掘机的切削头工具 Cutting head tool for tunnel boring machine |
| 01/07/2015 | CN104265180A 螺杆钻具用分体式万向轴总成 Screw drill with split cardan shaft assembly |
| 01/07/2015 | CN104265179A 一种变曲率螺旋打桩机钻头 A variation of the curvature of the spiral drill hammers |
| 01/07/2015 | CN104265178A 扩孔刀具 Reaming tool |
| 01/07/2015 | CN104265177A 一种防卡钻具 An anti-card drill |
| 01/07/2015 | CN104265174A 随钻浇砼空心桩成桩机具 Pouring concrete hollow drilling equipment Pile |
| 01/07/2015 | CN104264068A 一种矿用钻头的加工方法 Ore processing methods with drill |
| 01/07/2015 | CN103850651B 液旋前导器 Rotary is the leading solution |
| 01/07/2015 | CN102943626B 冲击旋切钻头及使用该钻头的入岩钻机 Peeling impact drill and use the drill rig into the rock |
| 01/06/2015 | US8925656 Diamond bonded construction with reattached diamond body |
| 01/06/2015 | US8925655 Polycrystalline diamond compact including a non-uniformly leached polycrystalline diamond table and applications therefor |
| 01/06/2015 | US8925654 Earth-boring tools and methods of forming earth-boring tools |
| 01/06/2015 | US8925422 Method of manufacturing a drill bit |
| 01/06/2015 | CA2679933C High productivity core drilling system |
| 01/03/2015 | CA2854691A1 Method of making diamond mining core drill bit and reamer |
| 01/01/2015 | US20150000988 Cutter for use in well tools |
| 01/01/2015 | US20150000983 Method of orienting a cutting element |
| 12/31/2014 | CN204060520U 一种大口径探矿钻头 One kind of large diameter drill prospecting |
| 12/31/2014 | CN204060519U 一种高强度钻头 A high strength drill bit |
| 12/31/2014 | CN204060518U 一种新型潜孔钻头 A new DTH drill |
| 12/31/2014 | CN204060517U 液动冲击旋转钻具 Hydraulic rotary drilling impact |
| 12/31/2014 | CN204060516U 干式内排粉钻头 Dry powder inside row drill |
| 12/31/2014 | CN204060515U 旋扩钻头 Rotary drill expansion |
| 12/31/2014 | CN104251121A 适用于石油勘探井可形成粗颗粒岩屑的pdc钻头 For petroleum exploration wells to form coarse particles pdc drill cuttings |
| 12/30/2014 | US8920079 Joined product |
| 12/30/2014 | US8919463 Polycrystalline diamond cutting element |
| 12/30/2014 | US8919462 Cutting elements for earth-boring tools, earth-boring tools including such cutting elements and related methods |
| 12/30/2014 | US8919461 Well tool having a nanoparticle reinforced metallic coating |
| 12/30/2014 | CA2776639C Hole opener with hybrid reaming section |
| 12/30/2014 | CA2776575C Hole opener with hybrid reaming section |
| 12/30/2014 | CA2775740C Tools for use in drilling or enlarging well bores having expandable structures and methods of making and using such tools |
| 12/25/2014 | US20140374172 Pdc cutter with chemical addition for enhanced abrasion resistance |
| 12/25/2014 | US20140374171 Manufacture of well tools with matrix materials |
| 12/25/2014 | US20140374170 Underreamer Apparatus and Method |
| 12/25/2014 | US20140374169 Retention of multiple rolling cutters |
| 12/25/2014 | US20140374163 Actuating a downhole tool |
| 12/25/2014 | US20140374161 Device for enlarging caisson bases |
| 12/25/2014 | US20140373458 Liquid-metal-embrittlement resistant superabrasive compacts |
| 12/24/2014 | CN204040915U 水平井安全高效气体钻井射流磨钻头 Safe and efficient gas drilling horizontal wells jet mill drill |
| 12/24/2014 | CN204040914U 水平井安全高效泥浆钻井射流磨钻头 Safe and efficient drilling horizontal wells in the jet mill drill mud |
| 12/24/2014 | CN204040913U 一种孕镶金刚石钻头 One kind of impregnated diamond bit |
| 12/24/2014 | CN204040912U 桩机钻头用牙掌切削齿 Pile drill cutting teeth with the teeth palm |
| 12/24/2014 | CN204040911U 一种坚硬粘土或强风化软岩锚索扩孔装置 A hard clay or highly weathered soft rock anchor reaming device |
| 12/24/2014 | CN204040910U 带背凸圆弧面切削齿 Bring back the convex arc face cutters |
| 12/24/2014 | CN204040909U 地热开采用防斜满眼钻具 Geothermal open with anti-drill oblique eyeful |
| 12/24/2014 | CN204040905U 一种新型造斜钻头 A new drill whipstocking |
| 12/24/2014 | CN104246110A 用于滚动切割器的分体套筒 For rolling cutter split sleeve |
| 12/24/2014 | CN104246109A 利用电容分析聚晶金刚石 By capacitive analysis of polycrystalline diamond |
| 12/24/2014 | CN104234634A 组装型无芯钻头 Assembly-type non-core drill |
| 12/24/2014 | CN104234633A 用于顶板钻头尖切削镶片的刃保护器 Edge protection for roof drill tip of cutting inserts |
| 12/24/2014 | CN104234632A 一种扩底钻头 Belled one kind of drill |
| 12/24/2014 | CN104234631A 一种岩石地层定向钻穿越用正扩钻具 One kind of rock formations directional drilling with a positive expansion drill |
| 12/24/2014 | CN104234630A 旋扩钻头 Rotary drill expansion |
| 12/24/2014 | CN104234629A 一种用于冰川钻探的多层立体刀面钻头 A multi-dimensional flank glacier drilling drill |
| 12/24/2014 | CN104229800A 一种冲击钻头的制造方法及其产品 An impact drill bit manufacturing method and product |
| 12/24/2014 | CN103132087B 一种23CrNi3Mo钎具用材料的硬度分布控制工艺 One kind 23CrNi3Mo solder materials with hardness distribution control process |
| 12/24/2014 | CN103015904B 挤砂石土锥形套筒金刚石钻头 Squeeze gravel soil cone sleeve diamond drill |
| 12/23/2014 | US8915313 Hole boring tool |
| 12/23/2014 | US8915166 Single mold milling process |
| 12/18/2014 | US20140367178 Cutting structures for fixed cutter drill bit and other downhole cutting tools |
| 12/18/2014 | US20140367177 Polycrystalline diamond compacts with partitioned substrate, polycrystalline diamond table, or both |
| 12/18/2014 | US20140367176 Polycrystalline diamond compacts with partitioned substrate, polycrystalline diamond table, or both |
| 12/18/2014 | US20140367175 Drill bit assembly for a directional percussion boring system |
| 12/18/2014 | US20140367174 Cutting structures and structures for retaining the same |
| 12/18/2014 | US20140367173 Drill bit assembly for a directional percussion boring system |
| 12/18/2014 | US20140367171 High-productivity drill bits |
| 12/17/2014 | CN204024554U 油气井一体式套管段铣及裸眼造穴工具 Integrated oil and gas well casing section milling and hole making tool for the naked eye |
| 12/17/2014 | CN204024548U 一种新型的半合式单动双管钻具 A new half-formed single-action double barrel drill |
| 12/17/2014 | CN204024547U 一种运用于勘察钻机的钻进装置 One kind of device used in reconnaissance drilling rig |
| 12/17/2014 | CN204024492U 一种pdc钢体钻头及其喷嘴 One kind pdc drill steel body and nozzle |
| 12/17/2014 | CN204024491U 用于径向水平井的自旋转喷射钻头 For radial horizontal wells since the rotating jet drill |
| 12/17/2014 | CN204024490U 用于定向井pdc钻头的保径结构 Gage structure for pdc drill directional wells |
| 12/17/2014 | CN204024489U 一种pdc胎体钻头 One kind of carcass pdc drill |
| 12/17/2014 | CN204024488U 一种塔式钻头 One kind of drill tower |
| 12/17/2014 | CN204024487U 金刚石钻头 Diamond drill |
| 12/17/2014 | CN204024486U 一种防泥包pdc钻头 An anti-balling pdc drill |
| 12/17/2014 | CN204024485U 一种设置有长保径的pdc钻头 A setting of long gage pdc drill |
| 12/17/2014 | CN204024484U 一种设置有后排切削齿的pdc钻头 A setting has rear pdc drill cutting teeth |
| 12/17/2014 | CN204024483U 一种pdc钻头 One kind pdc drill |
| 12/17/2014 | CN204024482U 一种复合式pdc钻头 A composite type pdc drill |
| 12/17/2014 | CN204024481U 尖齿pdc钻头 Tine pdc drill |
| 12/17/2014 | CN204024480U 适用于硬地层的犁切型pdc钻头 Suitable for hard formation plowing type pdc drill |
| 12/17/2014 | CN204024479U 一种防涡动的pdc钻头 An anti-whirl pdc drill |
| 12/17/2014 | CN204024478U 一种扩底钻头 Belled one kind of drill |
| 12/17/2014 | CN204024477U 一种适合压力平衡钻进的钻头 One suitable pressure-balanced drilling drill |
| 12/17/2014 | CN104220216A 高压高温单元 High pressure and temperature unit |
| 12/17/2014 | CN104213915A 装有防护板冲击设备 Equipped with fenders impact device |
| 12/17/2014 | CN104210036A 一种金刚石薄壁钻头基体连接盘及其制造工艺 A line of diamond drill bit matrix connecting plate and its manufacturing process |
| 12/17/2014 | CN104209517A 具有工程化孔隙率的多晶金刚石切削元件和用于制造这种切削元件的方法 A polycrystalline diamond cutting elements and a method for manufacturing such cutting elements having engineered porosity |
| 12/17/2014 | CN103291219B 钻进-冲孔一体化水力冲孔钻头 Drilling - Integrated hydraulic punching punching drill |
| 12/17/2014 | CN102459802B 切削元件、用于制造这种切削元件的方法和包含这种切削元件的工具 Cutting elements, a method of manufacturing such tools include cutting elements and cutting elements for this |
| 12/17/2014 | CN102187047B 改进井具的设计、制造、性能和/或使用的方法和设备 Improved well tool design, manufacture, performance and / or use of a method and apparatus |
| 12/16/2014 | US8911522 Methods of forming inserts and earth-boring tools |
| 12/16/2014 | US8910730 Cutting element |
| 12/16/2014 | US8910729 Method and apparatus for drilling large-diameter hole in ground |
| 12/11/2014 | US20140360792 Split sleeves for rolling cutters |
| 12/11/2014 | US20140360791 PCD Elements And Process For Making The Same |
| 12/11/2014 | US20140360790 Edge protector for roof drill bit cutting insert |
| 12/11/2014 | US20140360789 Spacing of rolling cutters on a fixed cutter bit |