| Patents for E21B 17 - Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings (27,800) |
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| 05/20/2009 | CN101438089A Tubular threaded joint |
| 05/20/2009 | CN101435314A Non-rotating outer liner stabilizing device of rotating guide drilling tool |
| 05/20/2009 | CN100489263C Technology for manufacturing collar thick-wall seamless steel pipe |
| 05/19/2009 | US7533461 Method for interconnecting electrical conduits in a borehole |
| 05/14/2009 | WO2009059778A1 Threaded connection comprising at least one threaded element with an end lip for a metal tube |
| 05/14/2009 | WO2009042404A3 Swell set wet connect and method |
| 05/14/2009 | WO2008152289A3 Bottom-surface linking equipment including a flexible link between a floating support and the upper end of an under-surface rigid duct |
| 05/14/2009 | WO2008152288A3 Bottom-surface connection installation comprising an elastic damping device absorbing the tension of the top end of a rigid subsurface pipe |
| 05/14/2009 | WO2008060212A8 A drilling tool, a self -drilling rock bolt, a drill bit, an ancoring device for a self -drilling rock bolt, a shaft for a drilling tool and an end coupling for a drilling tool |
| 05/14/2009 | US20090120688 Method of attachment of a towing anchor to an iceberg |
| 05/14/2009 | DE112007001258T5 Doppelbohrgestänge mit verbessertem Verfahren für den Fliessweg und Vorrichtung Doppelbohrgestänge with improved method for the flow path and device |
| 05/14/2009 | CA2703928A1 Threaded connection comprising at least one threaded element with an end lip for a metal tube |
| 05/13/2009 | EP2057402A1 Scalloped wedge threads |
| 05/13/2009 | CN201237040Y Sealing connection device for clamp connector pipeline |
| 05/13/2009 | CN201236715Y Drill rod and drill bit connection apparatus of roof-bolter |
| 05/13/2009 | CN201236696Y External optical fiber sensor down-hole positioning device of oil water well casing tube |
| 05/13/2009 | CN201236678Y Oil extraction pipe with water control valve and longitudinal rib |
| 05/13/2009 | CN201236639Y Helical fixed pumping rod bias-wearing preventer |
| 05/13/2009 | CN201236638Y Centralizer |
| 05/13/2009 | CN201236637Y Anti-abrasion coupling of hollow rod |
| 05/13/2009 | CN201236636Y Anti-corrosion bias-wearing proof sucker-rod coupling |
| 05/13/2009 | CN201236635Y Sleeve type telescopic short piece |
| 05/13/2009 | CN201236634Y Reverse circulation connector |
| 05/13/2009 | CN201236633Y Mandrel mud collar of downhole tool |
| 05/13/2009 | CN201235770Y Continuous sucker rod double-disk transport vehicle |
| 05/13/2009 | CN101432499A Gas tight tubular joint or connection |
| 05/13/2009 | CN101429974A Flexible universal shaft |
| 05/13/2009 | CN101429853A Digital multifunctional creep grinding device |
| 05/13/2009 | CN101429852A Liquid-gas type vibration absorber |
| 05/13/2009 | CN101429851A Taper pipe threaded drilling tool |
| 05/13/2009 | CN101429845A Method for electric coal drill using electric hand drill bit by utilization of special-shaped drilling rod |
| 05/12/2009 | US7530780 Method and apparatus for wind power foundation |
| 05/12/2009 | US7530758 Mechanical device comprising a plurality of parts assembled together with accurate relative positioning |
| 05/12/2009 | CA2573379C Wellbore flow control device |
| 05/12/2009 | CA2476360C Seal arrangement |
| 05/12/2009 | CA2430533C Lubricating coating composition suitable for lubrication of a threaded joint |
| 05/12/2009 | CA2423295C Quick release drill bit for down-hole drills |
| 05/12/2009 | CA2402203C Oilwell casing electrical power pick-off points |
| 05/12/2009 | CA2401734C Wireless reservoir production control |
| 05/07/2009 | WO2009058725A2 Downhole seal bore repair device |
| 05/07/2009 | WO2009056845A2 Connecting assembly |
| 05/07/2009 | US20090114451 Apparatus for keeping a down hole drilling tool vertically aligned |
| 05/07/2009 | US20090114385 Method of stimulating a well |
| 05/07/2009 | US20090114383 Gas lift apparatus for flushing and snubbing well |
| 05/07/2009 | CA2704306A1 Connecting assembly |
| 05/06/2009 | EP2054347A1 Treating liquids in oil extraction |
| 05/06/2009 | EP1913229B1 Subsea system having a flexible pipe with a controlled curvature |
| 05/06/2009 | CN201232527Y Transversal shock-absorber suitable for gas drilling |
| 05/06/2009 | CN201232526Y Heat carrier cycling hollow sucker rod |
| 05/06/2009 | CN101424167A Underground travel increasing apparatus for sucker rod |
| 05/06/2009 | CN100485157C Two-way protecting pumping rod connected hoop |
| 05/05/2009 | US7528736 Loaded transducer for downhole drilling components |
| 05/05/2009 | US7527105 Power and/or data connection in a downhole component |
| 05/05/2009 | CA2468809C Severe dog leg swivel for tubing conveyed perforating |
| 05/05/2009 | CA2460727C Thread joint |
| 04/30/2009 | WO2009055412A2 Drill-string shock absorbers |
| 04/30/2009 | WO2009053669A1 Apparatus and method for ratcheting stimulation tool |
| 04/30/2009 | WO2009053599A2 Floating support comprising a device for the retention and securing of a subsea pipe |
| 04/30/2009 | WO2009053343A2 Method of radially expanding a tubular element in a wellbore provided with a control line |
| 04/30/2009 | CA2701909A1 Apparatus and method for ratcheting stimulation tool |
| 04/29/2009 | EP2052442A2 Connector arrangement with penetrator in a submersible electrical assembly |
| 04/29/2009 | CN201228527Y Strong magnet block-resistant paraffin cutting centralizer |
| 04/29/2009 | CN201228526Y Eccentrically wear preventing device for sucker rod |
| 04/29/2009 | CN201228525Y Paraffin scraping centralizer for hollow sucker rod tub wheel |
| 04/29/2009 | CN201228524Y Integral downhole process pipe column for separate layer testing and water shut off for pumping well |
| 04/29/2009 | CN101418681A Once tubular column process for combination oil production by multiple fracturing for oil gas well |
| 04/29/2009 | CN101418675A Method and device for restraining vortex-induced vibration by underwater pipeline |
| 04/29/2009 | CN101418674A Jacket of flexible high-pressure rubber pipe for extending into drilling hole |
| 04/29/2009 | CN101418673A Single-hook screw thread and end plane metal self-sealing expansion sleeve pipe |
| 04/29/2009 | CN100482998C Reinforced tubular threaded joint for improved sealing after plastic expansion |
| 04/29/2009 | CN100482917C Locking device for built pipe connections |
| 04/28/2009 | US7523765 Fiber reinforced spoolable pipe |
| 04/28/2009 | CA2401791C Wireless power and communications cross-bar switch |
| 04/23/2009 | WO2009052270A1 Electrical contact connections for wellbore tools |
| 04/23/2009 | WO2009051950A2 Systems and methods for reducing backward whirling while drilling |
| 04/23/2009 | WO2009051490A1 Casing device |
| 04/23/2009 | WO2009049420A1 Production tubing member with auxiliary conduit |
| 04/23/2009 | US20090101328 Composite drill pipe and method of forming same |
| 04/23/2009 | CA2701954A1 Production tubing member with auxiliary conduit |
| 04/23/2009 | CA2701849A1 Casing device |
| 04/22/2009 | EP2050922A2 Thread for roto-percussion drill pipe |
| 04/22/2009 | EP2050921A2 Control line guide and method of using same |
| 04/22/2009 | EP2050920A2 Method and device to pull a pipeline comprised of short pipes into a boring channel |
| 04/22/2009 | EP2049805A2 Twin fin fairing |
| 04/22/2009 | EP2049760A2 Articulated extraction pipe |
| 04/22/2009 | EP2049759A1 Apparatus and method for controlling motion of a bend stiffener |
| 04/22/2009 | EP2049389A1 Improvements in or relating to water suction hoses |
| 04/22/2009 | CN201226380Y Conducting ring for drilling tool joint |
| 04/22/2009 | CN201225145Y Rolling wheel righting device of righting over core type well logging instrument |
| 04/22/2009 | CN201225100Y Screw drilling tool universal joint |
| 04/22/2009 | CN201225099Y Stress releaser |
| 04/22/2009 | CN201225094Y Air drilling trimmer |
| 04/22/2009 | CN201224083Y Tool for mounting and demounting oil casing screw protector |
| 04/22/2009 | CN101413381A Large through-hole middle wind pressure seal drill rod |
| 04/22/2009 | CN100480486C Tube coupling for tube elements |
| 04/21/2009 | US7520344 Wear resistant collar for sub assembly |
| 04/21/2009 | US7520330 System and method for limiting vortex-induced vibrations on an offshore production riser |
| 04/21/2009 | US7520328 Completion apparatus and methods for use in hydrocarbon wells |
| 04/21/2009 | CA2427280C Casing drilling connector with low stress flex groove |
| 04/16/2009 | WO2009049006A2 Pipe connection system |