| Patents for E21B 10 - Drill bits (19,464) |
|---|
| 09/15/2011 | US20110220414 Multi-coupling reduced length measure while drilling apparatus |
| 09/15/2011 | CA2791303A1 A rock drill bit, a drilling assembly and a method for percussive rock drilling |
| 09/14/2011 | EP2364393A1 Extendable cutting tools for use in a wellbore |
| 09/14/2011 | CN201972606U 一种金刚石聚晶钻头 One kind of polycrystalline diamond drill |
| 09/14/2011 | CN201972605U 一种金刚石钻头 A line of diamond drill |
| 09/14/2011 | CN201972604U 斜面套铣钻头 Chamfer milling drill sets |
| 09/14/2011 | CN201972603U 内凹四翼钻头 Concave four wings drill |
| 09/14/2011 | CN201972602U 塔式钻头 Tower drill |
| 09/14/2011 | CN102187048A Earth-boring bits and other parts including cemented carbide |
| 09/14/2011 | CN102187047A Method and apparatus to improve design, manufacture, performance and/or use of well tools |
| 09/14/2011 | CN102182405A Layered composite type diamond drill bit and manufacturing process thereof |
| 09/14/2011 | CN102182177A Integrated machine capable of drilling holes, rotating and expanding disk and cleaning holes |
| 09/13/2011 | US8016059 Gage insert |
| 09/13/2011 | US8016057 Erosion resistant subterranean drill bits having infiltrated metal matrix bodies |
| 09/13/2011 | US8016056 Asymmetric graded composites for improved drill bits |
| 09/13/2011 | US8016054 Polycrystalline diamond abrasive elements |
| 09/13/2011 | US8016053 Drill bit configurations for parked-bit or through-the-bit-logging |
| 09/13/2011 | CA2557868C Rotating systems associated with drill pipe for conveying electrical power to downhole systems |
| 09/13/2011 | CA2505709C Cutter having shaped working surface with varying edge chamfer |
| 09/13/2011 | CA2463219C Cutting elements with improved cutting element interface design and bits incorporating the same |
| 09/09/2011 | WO2011087542A3 Percussive augmenter of rotary drills for operating as a rotary-hammer drill |
| 09/09/2011 | WO2011049864A4 Cutting structures for casing component drillout and earth-boring drill bits including same |
| 09/09/2011 | CA2733618A1 A tri-cone bit for high rpm drilling applications |
| 09/08/2011 | US20110214921 Polycrystalline Diamond Abrasive Compact |
| 09/08/2011 | US20110214920 Universal drilling and completion system |
| 09/07/2011 | CN201963235U 一种金刚石取心钻头 A line of diamond coring bits |
| 09/07/2011 | CN201963206U 用于长螺旋打桩机的钻尖 The drill tip for long spiral piling machine |
| 09/07/2011 | CN201963205U 电动潜孔冲击钻头 Electric DTH hammer drill |
| 09/07/2011 | CN201963204U 一字形锥齿钎具 A cone-shaped teeth Drilling Tools |
| 09/07/2011 | CN201963203U 煤矿井下pdc扩孔钻头 Pdc reaming drill coal mine |
| 09/07/2011 | CN201963202U 强推辅助式扩孔钻头 Strong push assisted reaming drill |
| 09/07/2011 | CN201963201U 地基打桩用钻头 Foundation piling drill |
| 09/07/2011 | CN201963190U 一种用于薄墙深孔施工的冲击式扁平钻头装置 Construction of a thin wall deep impact drill apparatus for flat |
| 09/07/2011 | CN201962668U 一种置换淤泥成桩的设备 A device into a pile of mud displacement |
| 09/07/2011 | CN102177306A Drilling out casing bits with other casing bits |
| 09/07/2011 | CN102174877A Polycrystalline diamond composite sheet |
| 09/07/2011 | CN102174876A A drilling apparatus having in-line extending wings and driving method thereof |
| 09/07/2011 | CN101676755B 激光定位装置 Laser positioning device |
| 09/06/2011 | US8011457 Downhole hammer assembly |
| 09/06/2011 | US8011456 Rotationally indexable cutting elements and drill bits therefor |
| 09/06/2011 | US8011449 Method and apparatus for directional drilling |
| 09/06/2011 | US8011275 Methods of designing rotary drill bits including at least one substantially helically extending feature |
| 09/06/2011 | CA2657454C Cutters for downhole cutting devices |
| 09/01/2011 | WO2011046838A3 Polycrystalline compacts including nanoparticulate inclusions, cutting elements and earth-boring tools including such compacts, and methods of forming such compacts |
| 09/01/2011 | US20110209922 Casing end tool |
| 09/01/2011 | US20110209921 Collapsible rock head and associated structure |
| 08/31/2011 | CN201953316U 径向切削pdc钻头 Radial cutting pdc drill |
| 08/31/2011 | CN201953315U 一种筒桩旋挖钻斗 One kind of tubular pile auger drill bucket |
| 08/31/2011 | CN201952802U 混凝土管桩桩孔清理工具 Concrete Pipe Piles cleanup tool |
| 08/31/2011 | CN1968777B Cutting tool insert |
| 08/31/2011 | CN102168528A Drill bucket capable of opening bucket door continuously to discharge soil forcibly |
| 08/31/2011 | CN102168527A Miner cutting bit holding apparatus s |
| 08/31/2011 | CN102168526A Stud gear with cutting edge and drill thereof |
| 08/31/2011 | CN102168525A Rotating shaft composite sealing ring |
| 08/31/2011 | CN101614109B Process for preparing novel drill rod with outer cutting sleeve |
| 08/31/2011 | CN101324175B Diamond-silicon carbide combination drill teeth for petroleum probe boring and manufacture method thereof |
| 08/30/2011 | US8007922 Articles having improved resistance to thermal cracking |
| 08/30/2011 | US8007714 Earth-boring bits |
| 08/30/2011 | US8006785 Casing and liner drilling bits and reamers |
| 08/30/2011 | US8006783 Helical drilling apparatus, systems, and methods |
| 08/30/2011 | CA2657211C Downhole abrading tools having a hydrostatic chamber and uses therfor |
| 08/30/2011 | CA2651823C Reaming tool suitable for running on casing or liner and method of reaming |
| 08/30/2011 | CA2621438C Method of drilling a bore hole |
| 08/26/2011 | CA2728794A1 Collapsible rock head and associated structure |
| 08/25/2011 | WO2011041532A4 Earth-boring tools having expandable members and related methods |
| 08/25/2011 | US20110203856 Composite cutting/milling tool having differing cutting elements and method for making the same |
| 08/25/2011 | US20110203855 Drilling and core removal apparatus and method |
| 08/25/2011 | US20110203854 Impregnated rotary bit |
| 08/25/2011 | US20110203853 Auger boring machine having spoils ejector |
| 08/25/2011 | US20110203852 Segmented Downhole Tool |
| 08/25/2011 | US20110203849 Expandable Reamers for Earth Boring Applications |
| 08/24/2011 | EP2358969A1 Hybrid drill bit with high pilot-to journal diameter ratio |
| 08/24/2011 | EP2358490A1 A polycrystalline diamond composite compact element, tools incorporating same and method for making same |
| 08/24/2011 | EP2137372B1 Morphible bit |
| 08/24/2011 | CN201943603U 地钻缓冲机构 Drill buffer mechanism |
| 08/24/2011 | CN201943585U 一种蓝宝石螺旋复合体喷咀喷射切削深井钻进钻头 One kind of sapphire nozzle jet cutting spiral composite drill deep drilling |
| 08/24/2011 | CN201943584U 一种用于孕镶钻头的孕镶齿 Impregnated diamond tooth head for pregnant |
| 08/24/2011 | CN201943583U 一种12.25″五刀翼胎体pdc钻头 One kind of 12.25 "five blades and carcass pdc drill |
| 08/24/2011 | CN201943582U 一种复合式单牙轮钻头 A composite single-cone bit |
| 08/24/2011 | CN201943581U 内螺旋筒式钻具 Drum spiral drill |
| 08/24/2011 | CN102164698A Rock drill bit |
| 08/24/2011 | CN101481993B Ultra-deep drilling bit apparatus for high tailing dam |
| 08/23/2011 | US8002859 Manufacture of thermally stable cutting elements |
| 08/23/2011 | US8002054 Roof drill bit, roof drill bit body and hard cutting insert for roof drill bit |
| 08/23/2011 | US8002053 System, method, and apparatus for predicting tracking by roller cone bits and anti-tracking cutting element spacing |
| 08/23/2011 | US8002052 Particle-matrix composite drill bits with hardfacing |
| 08/23/2011 | CA2625521C System, method, and apparatus for enhancing the durability of earth-boring bits with carbide materials |
| 08/23/2011 | CA2524112C Drill bit cutting elements with selectively positioned wear resistant surface |
| 08/18/2011 | WO2011071985A3 Polycrystalline diamond cutting element structure |
| 08/18/2011 | WO2011041553A4 Tools for use in drilling or enlarging well bores having expandable structures and methods of making and using such tools |
| 08/18/2011 | US20110198128 Earth-boring tools including abrasive cutting structures and related methods |
| 08/17/2011 | EP2356306A1 Real time dull grading |
| 08/17/2011 | EP2132403B1 Drilling head for reboring a stuck valve |
| 08/17/2011 | CN201934028U 带有弹性浮动套的边齿保径扩孔器 Floating sleeve with elastic sides tooth gage reamer |
| 08/17/2011 | CN201934027U 带有浮动垫的边齿保径扩孔器 Toothing gage with a floating reamer pad |
| 08/17/2011 | CN201934026U 耐磨边齿保径扩孔器 Wearable toothing gage reamer |
| 08/17/2011 | CN201934025U 一种锥刀座浮筒扩孔器 One kind of taper reamer tool holder floats |
| 08/17/2011 | CN201934014U 一种逆水浆循环人工钻机 One kind of pulp against the current cycle of artificial rigs |
| 08/17/2011 | CN201934011U 冰凌爆破开冰仪 Ice blasting open the ice instrument |
| 08/17/2011 | CN201933518U 填埋场防渗层hdpe膜漏洞修补装置 Landfill liner hdpe film bug fixes means |