| Patents for E21B 17 - Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings (27,800) |
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| 07/25/2012 | CA2765294A1 Coiled tube with varying mechanical properties for superior performance and methods to produce the same by a continuous heat treatment |
| 07/24/2012 | US8226319 Fluid dispenser assembly |
| 07/24/2012 | US8225888 Casing shoes having drillable and non-drillable cutting elements in different regions and related methods |
| 07/24/2012 | US8225887 Casing and liner drilling shoes with portions configured to fail responsive to pressure, and related methods |
| 07/24/2012 | US8225885 Joint for use in back reaming |
| 07/24/2012 | US8225884 Rotor underreamer, section mill, casing cutter, casing scraper and drill string centralizer |
| 07/24/2012 | US8225865 System and method for aligning a component of a borehole assembly |
| 07/24/2012 | US8225864 Well string centralizer and method of forming |
| 07/24/2012 | CA2420347C Threaded component for seizure-resistant tubular threaded joint |
| 07/19/2012 | WO2012096581A1 Bore protector |
| 07/19/2012 | WO2012051530A3 Tubing grab assembly |
| 07/19/2012 | CA2816567A1 Centraliser |
| 07/18/2012 | EP1175577B1 Threaded connection with high compressive rating |
| 07/18/2012 | CN202338328U 一种可控外径尺寸片式扶正器 A controlled diameter size piece centralizers |
| 07/18/2012 | CN202338294U 自喷与机采一体化智能完井管柱 From the spray and apheresis integrated intelligent completion string |
| 07/18/2012 | CN202338285U 稠油井空心抽油杆清洗连接器 Heavy oil cleaning hollow rod connector |
| 07/18/2012 | CN202338240U Borehole cleaning tool |
| 07/18/2012 | CN202338227U 连续螺旋钻杆 Continuous spiral drill |
| 07/18/2012 | CN202338226U Non-magnetic spiral drill collar |
| 07/18/2012 | CN202338225U 一种油田钻井定向套取出工具 One kind of oil drilling directional extraction tool sets |
| 07/18/2012 | CN202338224U 抽油光杆与盘根盒的保护装置 Shiny rod pumping protector packing boxes |
| 07/18/2012 | CN202338223U Circulating pressurization disc |
| 07/18/2012 | CN202338222U Casing centralizer with special flow passage |
| 07/18/2012 | CN202338221U Casing protector for sidetracking horizontal wells |
| 07/18/2012 | CN202338220U Wear-reducing and torsion-reducing tool of inner drilling tool of casing |
| 07/18/2012 | CN202338219U Straight edge stone roller stabilizer |
| 07/18/2012 | CN202338218U 内缩径式稠油热采井用管端外加厚套管接头 Within necking type heavy oil thermal recovery wells outside the thick pipe spigot end |
| 07/18/2012 | CN202338217U 稠油热采井用管端外加厚套管接头 Heavy oil thermal recovery wells outside the thick pipe spigot end |
| 07/18/2012 | CN202338216U High pressure resistant tapping sleeve |
| 07/18/2012 | CN202338215U 抽油杆的变扣接头 Variable buckle connector rod |
| 07/18/2012 | CN202338214U Continuous circulation drilling device with drill rod positioning device and reactive torque device |
| 07/18/2012 | CN202338213U 一种油管伸缩短接 One kind of extension tubing connected to shorten |
| 07/18/2012 | CN202338212U Continuous oil pipe connector |
| 07/18/2012 | CN202338211U Anti-overflow pipe |
| 07/18/2012 | CN202338210U 金属膨胀式管外分段完井工具 Metal expansion type tube segment completion tools |
| 07/18/2012 | CN202338209U 金属热敏管外分段完井工具 Metal thermal tube segment completion tools |
| 07/18/2012 | CN202337979U 气浆分离装置及具有该装置的钻杆组合结构 Pulp and gas separation device having a composite structure of the drill apparatus |
| 07/18/2012 | CN202337976U 潜孔冲击高压旋喷注浆设备 DTH hammer high pressure jet grouting equipment |
| 07/18/2012 | CN102598153A Integrated high power umbilical |
| 07/18/2012 | CN102597413A Hydraulically locking stabilizer |
| 07/18/2012 | CN102597412A Drill string component for noise control during percussion drilling |
| 07/18/2012 | CN102587896A Mechanical water exploration and water plugging channeling detection composite tubular column |
| 07/18/2012 | CN102587848A Devices and methods for locally replacing seal surface |
| 07/18/2012 | CN102587845A Air-sealing casing screwed connector interchangeable with API (American petroleum institute) round thread |
| 07/18/2012 | CN102587844A Special round thread pipe coupling |
| 07/18/2012 | CN102587843A Special round thread highly-torque-resistant oil casing coupling |
| 07/18/2012 | CN102587842A Special round thread highly-torque-resistant pipe coupling |
| 07/18/2012 | CN101832112B Optimal experimental device for coupling centralizer |
| 07/18/2012 | CN101575949B Riser pipe quick coupling |
| 07/18/2012 | CN101476447B Hot diaphragm type ultrahigh molecular weight polyethylene composite oil pumping pipe |
| 07/18/2012 | CN101321925B Cutting rod, cutting bit and cutting tool |
| 07/17/2012 | US8220563 Ultra-low friction coatings for drill stem assemblies |
| 07/17/2012 | US8220552 Method of inhibiting hydrate formation |
| 07/17/2012 | CA2660306C Laminate pressure-containing body for a well tool |
| 07/17/2012 | CA2378506C Low-loss inductive couplers for use in wired pipe strings |
| 07/12/2012 | WO2012094194A2 Low equivalent circulation density setting tool |
| 07/12/2012 | WO2012092985A1 Centralizer |
| 07/12/2012 | WO2012048157A3 Magnetic leak management apparatus and methods |
| 07/12/2012 | US20120175168 Downhole expandable roller bearing apparatus |
| 07/12/2012 | US20120175131 ID Centralizer |
| 07/12/2012 | US20120175129 Shrinkable sleeve stabilizer |
| 07/12/2012 | US20120175123 Separation Device |
| 07/12/2012 | CA2823997A1 Centralizer |
| 07/12/2012 | CA2823708A1 Low equivalent circulation density setting tool |
| 07/11/2012 | EP2474468A1 Hybrid riser tower |
| 07/11/2012 | EP2473699A2 A multifunctional screw drill and reaming device |
| 07/11/2012 | EP2473698A1 A drill bit assembly for fluid-operated percussion drill tools |
| 07/11/2012 | CN202333397U 一种用于随钻测量的电联通装置 Electrical communication apparatus for measurement while drilling |
| 07/11/2012 | CN202325492U 柔性加重杆 Flexible heavier rod |
| 07/11/2012 | CN202325477U Centering device of horizontal well boron neutron lifetime logging instrument |
| 07/11/2012 | CN202325474U 油井用柔性连接器 Wells with flexible connector |
| 07/11/2012 | CN202325465U Power supply and signal uploading system integrated nipple |
| 07/11/2012 | CN202325454U 双通道注采切换装置 Dual injection - switching device |
| 07/11/2012 | CN202325453U 地热超导传热清防蜡抽油杆 Geothermal Heat superconducting Paraffin sucker |
| 07/11/2012 | CN202325370U 抽油杆双级密封防偏防喷器 Two-stage anti-bias rod seal blowout preventer |
| 07/11/2012 | CN202325341U Combined type sucker-rod fishing tool |
| 07/11/2012 | CN202325302U 风力与机械协同排渣专用钻杆 Wind and mechanical synergy slagging special drill |
| 07/11/2012 | CN202325301U 大孔径螺旋深孔钻机钻杆 Large diameter spiral deep hole drill rig |
| 07/11/2012 | CN202325300U 防倒扣型抽油杆扶正器 Flip-type anti-rod stabilizer |
| 07/11/2012 | CN202325299U Ball drag reduction device |
| 07/11/2012 | CN202325298U 螺杆泵抽油杆耐磨扶正器 Wear-resistant screw rod centralizer |
| 07/11/2012 | CN202325297U 抽油杆防偏磨耐磨扶正器 Wearable sucker rod centralizer |
| 07/11/2012 | CN202325296U 一种具有减振作用的旋转稳定器 Rotating stabilizer having a damping effect |
| 07/11/2012 | CN202325295U 分体陶瓷抽油杆防偏磨装置 Split ceramic rod sucker device |
| 07/11/2012 | CN202325294U 带密封润滑装置的滚轮扶正器 Centralizer wheel with sealed lubrication device |
| 07/11/2012 | CN202325293U 一种螺杆钻具传动轴失效防掉保护装置 A screw drill drive shaft failure anti-out protection |
| 07/11/2012 | CN202325292U 滚珠形弹性扶正器 Ball-shaped elastic centralizer |
| 07/11/2012 | CN202325291U 工作套管防脱扣装置 Anti-trip device casing work |
| 07/11/2012 | CN202325290U 一种低应力高密封性能的油套管用金属密封接头 A low stress and high sealing performance of oil casing with a metal seal fittings |
| 07/11/2012 | CN202325289U 热应力补偿器 Thermal stress compensation |
| 07/11/2012 | CN202325288U 丢手安全接头 Throw hand safety joint |
| 07/11/2012 | CN202325287U 抗扭钻杆接头连接结构 Torsional drill pipe joints connecting structure |
| 07/11/2012 | CN202325286U 动力头键套 Power head key sets |
| 07/11/2012 | CN202325285U 一种钻杆变径接头 One kind of drill pipe reducers |
| 07/11/2012 | CN202325284U Matching tool for small-hole wireless measurement-while-drilling (MWD) instrument |
| 07/11/2012 | CN202325283U 油田注水井扫线快速接头 Oilfield injection wells sweep line quick connector |
| 07/11/2012 | CN202325282U Downhole eight-roller-wheel rod joint for well testing |
| 07/11/2012 | CN202325281U 套管智能防盗器 Casing security intelligence |
| 07/11/2012 | CN202325280U 一种减震螺杆钻具 The shock absorbing screw drill |
| 07/11/2012 | CN202325279U 一种热采井直连型隔热油管 A heat recovery wells directly connected type insulated tubing |