| Patents for E21B 17 - Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings (27,800) |
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| 02/08/2012 | CN202140033U 智能型旋转接头 Smart rotary joint |
| 02/08/2012 | CN202140032U 抽油杆接箍 Sucker rod couplings |
| 02/08/2012 | CN202140031U 一种膨胀管螺纹连接结构 An expansion pipe threaded connection |
| 02/08/2012 | CN202140030U 铝合金钻探管 Aluminum alloy drill pipe |
| 02/08/2012 | CN202140029U 焊接钻杆管端加厚区防刺漏钻杆 Welded drill pipe end upsetting District stab leak drill |
| 02/08/2012 | CN202140028U 一种钻机用钻杆 One kind of drill rigs |
| 02/08/2012 | CN102348864A Riser clamp |
| 02/08/2012 | CN102345449A Fixing test pup joint for flow test of generator |
| 02/08/2012 | CN102345448A Apparatus and method for depth referencing downhole tubular strings |
| 02/08/2012 | CN102345447A Casting spliced diamond composite sheet anchor rod drill bit and connecting sleeve thereof |
| 02/08/2012 | CN101962949B 长螺旋二重管高压搅喷桩施工方法及其装置 Long spiral double tube high-pressure jet mixing pile construction method and apparatus |
| 02/08/2012 | CN101487385B 一种降低当量循环密度的井下工具 A method of reducing the equivalent circulating density downhole tool |
| 02/07/2012 | US8110741 Composite coiled tubing end connector |
| 02/07/2012 | CA2572871C Downhole device |
| 02/07/2012 | CA2484418C Well completion with merged influx of well fluids |
| 02/02/2012 | WO2012015641A2 Installation of tubular strings with lines secured thereto in subterranean wells |
| 02/02/2012 | WO2011079339A3 Drill bit for the drilling, in particular percussion drilling or rotary percussion drilling, of holes in soil material or rock material |
| 02/02/2012 | US20120024391 Use of underground gas storage to provide a flow assurance buffer between interlinked processing units |
| 02/02/2012 | CA2806184A1 Installation of tubular strings with lines secured thereto in subterranean wells |
| 02/02/2012 | CA2801852A1 Flex joint for downhole drilling applications |
| 02/01/2012 | EP2412735A1 Fluororesin and riser pipe |
| 02/01/2012 | EP2411717A1 Protective sleeve for a flexible pipe |
| 02/01/2012 | EP2411627A1 Device including an apparatus for measuring drilling or coring operation parameters, and equipment including such a device |
| 02/01/2012 | EP2411621A1 Helical drilling apparatus, systems, and methods |
| 02/01/2012 | EP2411620A2 Control line retention and method for retaining control line |
| 02/01/2012 | EP2411619A1 Threaded thin-walled drill tube joint |
| 02/01/2012 | CN202131993U 抽油杆减磨扶正接箍 Sucker rod couplings righting antifriction |
| 02/01/2012 | CN202131992U 一种扶正器钢翼保护装置 One kind of centralizers steel wing protector |
| 02/01/2012 | CN202131991U 钻压稳定器 WOB Stabilizer |
| 02/01/2012 | CN202131990U 一种浮动式接箍报警器 One kind of floating collar alarm |
| 02/01/2012 | CN202131989U 新型抽油杆 The new rod |
| 02/01/2012 | CN202131988U 管体端部加厚的钻杆 Thickened end portion of the tubular body drill |
| 02/01/2012 | CN202131973U 煤矿软煤层顺层钻孔用全液压坑道钻机 Soft Coal Seam coal mine hydraulic tunnel drilling rig |
| 02/01/2012 | CN102341561A Dc powered subsea inverter |
| 02/01/2012 | CN102337872A One-grade three-section integrated water distribution tubular column of horizontal well |
| 02/01/2012 | CN102337851A Oil production wellhead device capable of rotating automatically |
| 02/01/2012 | CN102337845A Protection method for rotary drilling rig, controller, protection device and rotary drilling rig |
| 02/01/2012 | CN102337844A Directional drilling signal transmission drill pipe |
| 02/01/2012 | CN102337843A Axial translation type automatic centering rotating joint for sucker rod |
| 02/01/2012 | CN102337387A Heat treatment process of sulfur-resistant petroleum drill rod joint |
| 01/30/2012 | CA2747117A1 Arrangement for hydrocarbon extraction in wells using progressive cavity pumps |
| 01/26/2012 | WO2012012613A1 Wellbore tool with exchangable blades |
| 01/26/2012 | WO2012012105A2 High temperature pothead |
| 01/26/2012 | WO2012012024A2 Outer casing string and method of installing same |
| 01/26/2012 | US20120018230 Flasked Pressure Housing |
| 01/26/2012 | US20120018229 Drill pipe |
| 01/26/2012 | US20120018221 Drill String Tooling Joint |
| 01/26/2012 | US20120018171 Outer Casing String and Method of Installing Same |
| 01/26/2012 | US20120018145 Wireline Standoff |
| 01/26/2012 | CA2806040A1 Wellbore tool with exchangable blades |
| 01/26/2012 | CA2805848A1 Drill pipe |
| 01/26/2012 | CA2804005A1 High temperature pothead |
| 01/25/2012 | EP2408997A1 Riser clamp |
| 01/25/2012 | EP2408996A2 Downhole drilling assembly |
| 01/25/2012 | EP2408995A2 Improved downhole device |
| 01/25/2012 | EP2408994A2 Method of connecting a flexible riser to an upper riser assembly |
| 01/25/2012 | CN202125259U Centralizer for tubing head |
| 01/25/2012 | CN202125258U Oil sleeve connector with high sealing performance and thread-gluing resistance |
| 01/25/2012 | CN202125257U Oil sleeve connector with high torque-exceeding resistance, high sealing performance and thread-gluing resistance |
| 01/25/2012 | CN202125256U Heat-insulation oil pipe connection structure welded and fixed at working end of pipe-end inner pipe |
| 01/25/2012 | CN202125255U Composite continuous tube for well drilling |
| 01/25/2012 | CN202125250U Plug-in type anchor rod drill bit of diamond compact and connection sleeve of same |
| 01/25/2012 | CN202125249U Casting plug-in type diamond compact anchor rod bit and connecting sleeve thereof |
| 01/25/2012 | CN202125244U Well drilling earth exploration machine with function of circular water absorption |
| 01/25/2012 | CN202125243U Reducing roller Kelly bushing |
| 01/25/2012 | CN1619098B Downhole tool sensor system and method |
| 01/25/2012 | CN102333933A Marine drilling riser connector with removable shear elements |
| 01/25/2012 | CN102330538A Bottom hole assembly for prebuckling dynamical pendulum of single stabilitzer |
| 01/25/2012 | CN102330018A Seamless steel tube used for thick-wall petroleum casing collar material and production method thereof |
| 01/25/2012 | CN102329553A Eccentric wear resisting powder paint of oil well pipe |
| 01/25/2012 | CN101701511B Sucker rod anti-tripping connecting device and manufacturing method thereof |
| 01/24/2012 | US8100183 Reinforced polymeric siphon tubes |
| 01/24/2012 | CA2653100C Consumable downhole tools |
| 01/24/2012 | CA2616909C Surface communication apparatus and method for use with drill string telemetry |
| 01/24/2012 | CA2587884C Modular drilling apparatus with power and/or data transmission |
| 01/24/2012 | CA2548431C Tubular stabbing protector and method |
| 01/24/2012 | CA2544832C System and method for damping vibration in a drill string |
| 01/24/2012 | CA2529135C System and method for transmitting electric power into a bore hole |
| 01/24/2012 | CA2423762C Cement shoe assembly for monobore well |
| 01/21/2012 | CA2709728A1 Coil tubing cable head with tool release, fluid circulation and cable protection features |
| 01/19/2012 | WO2012009451A1 Drilling operation suspension spool |
| 01/19/2012 | WO2012007884A2 Electrical wiring for drill pipe, casing, and tubing |
| 01/19/2012 | US20120013123 Threaded thin-walled drill tube joint |
| 01/19/2012 | US20120012396 Steerable drilling system |
| 01/19/2012 | US20120012391 Drilling device for executing diaphragm walls and method thereof |
| 01/19/2012 | US20120012301 Electrical Wiring for Drill Pipe, Casing, and Tubing |
| 01/19/2012 | CA2804367A1 Electrical wiring for drill pipe, casing, and tubing |
| 01/18/2012 | EP2406456A1 Re-settable and anti-rotational contraction joint with control lines |
| 01/18/2012 | EP2032792B1 Multi-sectional percussive drill bit assembly |
| 01/18/2012 | CN202117661U Self-locking type stratum testing artificial pipe string |
| 01/18/2012 | CN202117655U Centering guide special for horizontal well imaging logging |
| 01/18/2012 | CN202117648U One-level two-segment insert-seal injection-divided tubular pile capable of backwashing wells |
| 01/18/2012 | CN202117581U Tension-breaking prevention protector for continuous oil pipe |
| 01/18/2012 | CN202117580U Online logging centralizer for horizontal well |
| 01/18/2012 | CN202117579U High pressure sealing drilling rod |
| 01/18/2012 | CN202117578U Limit short section |
| 01/18/2012 | CN202117577U Internal slip type connector for continuous tube |
| 01/18/2012 | CN202117576U Air-sealed special threaded oil pipe joint |
| 01/18/2012 | CN202117575U Geothermal well formed by reforming petroleum abandoned well |
| 01/18/2012 | CN202117574U Drill rod rapid-change device for coal mine |