| Patents for E21B 17 - Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings (27,800) |
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| 02/23/2011 | EP2079633B1 Method of installing hybrid riser tower |
| 02/23/2011 | CN201751527U Hermetic seal drill pipe joint with good torsion resistance performance |
| 02/23/2011 | CN201751526U Drill column assembly with eccentric shaft joint |
| 02/23/2011 | CN101979817A Ditrigonal centralizer |
| 02/22/2011 | US7891442 Flexible drill string member |
| 02/22/2011 | CA2497188C A measuring sonde for a hydrocarbon well |
| 02/22/2011 | CA2463103C Seismic monitoring of in situ conversion in a hydrocarbon containing formation |
| 02/17/2011 | WO2011018713A2 Marine riser apparatus and method of installation thereof |
| 02/17/2011 | WO2011018617A1 Downhole device |
| 02/17/2011 | WO2011017815A1 Wellhead pipe coupling |
| 02/17/2011 | WO2010141968A3 Connection between a drill pipe and a connector |
| 02/17/2011 | WO2010118439A3 Interference-fit stop collar and method of positioning a device on a tubular |
| 02/17/2011 | US20110037255 Fatigue resistant pipe string component |
| 02/17/2011 | US20110036638 Interlocking Low Profile Rotating Control Device |
| 02/17/2011 | US20110036588 Systems and Methods for Running Casing Into Wells Drilled with Dual-Gradient Mud Systems |
| 02/17/2011 | US20110036566 Attachment of control lines to outside of tubular |
| 02/17/2011 | US20110036563 Coupling between wellbore tools having central transmission shafts |
| 02/17/2011 | CA2770514A1 Wellhead pipe coupling |
| 02/17/2011 | CA2769686A1 Downhole device |
| 02/16/2011 | EP2284354A2 Method of drilling out a reaming tool |
| 02/16/2011 | EP2283204A1 Consumable downhole tool |
| 02/16/2011 | EP2283203A1 Pipe connection |
| 02/16/2011 | EP2283202A2 Wired drill pipe cable connector system |
| 02/16/2011 | EP2283200A2 Kinetic energy harvesting in a drill string |
| 02/16/2011 | EP1904714B1 Method and installation for connecting a rigid submarine pipeline and a flexible submarine pipeline |
| 02/16/2011 | CN201747291U Drill rod for soft coal bed in coal mine |
| 02/16/2011 | CN201747290U Orientation sleeve take out device |
| 02/16/2011 | CN201747289U Device for protecting sucker rod from eccentric wear |
| 02/16/2011 | CN201747288U Thermal recovery slip type casing head |
| 02/16/2011 | CN201747287U Drilling tool for soil drilling machine |
| 02/16/2011 | CN201747286U Ball abrasion-reducing torsion-decreasing joint |
| 02/16/2011 | CN201747285U Improved oil pumping polished rod |
| 02/16/2011 | CN201747284U Lifting device while drilling |
| 02/16/2011 | CN201747283U Rotary drilling machine and the drilling rod fixing device thereof |
| 02/16/2011 | CN201747263U Nonmagnetic screw drilling tool |
| 02/16/2011 | CN201747261U Long twist drill for construction of anti-floating anchor rod |
| 02/16/2011 | CN201747260U Double-drill pipe well drill rig |
| 02/16/2011 | CN101975057A Real-time control drilling and production system for deep and ultra-deep wells |
| 02/16/2011 | CN101975050A Construction method of coal bed gas horizontal well and vertical drainage well in multi-objective layer geologic environment |
| 02/16/2011 | CN101975049A Apparatus and methods for allowing fluid flow inside at least one screen and outside a pipe disposed in a well bore |
| 02/16/2011 | CN101975039A Water buoy multilayer tieback pipe tieback device for deepwater drilling operation |
| 02/16/2011 | CN101975036A Method for inhibiting vortex-induced vibration of novel deepwater drilling riser |
| 02/16/2011 | CN101975035A Airtight seal connecting structure of special threaded buckle for oil sleeve pipe |
| 02/16/2011 | CN101975034A Hermetic seal connecting structure for special buckle of oil casing |
| 02/16/2011 | CN101975033A Damping device |
| 02/16/2011 | CN101975032A High efficiency torsion resistant drill rod joint with good sealing performance |
| 02/16/2011 | CN101975031A Spiral ground pile driving coupling device |
| 02/16/2011 | CN101975030A Heat-preserving and buoyancy-supplying dual-purpose device for deep water top tensioning marine riser |
| 02/16/2011 | CN101975029A Combined drilling tool |
| 02/16/2011 | CN101974903A Bidirectional mixing pile |
| 02/16/2011 | CN101520119B Concentric double layer oil pipe |
| 02/15/2011 | US7887098 Locking device for built pipe connections |
| 02/15/2011 | CA2646599C Progressive cavity pump rod guide |
| 02/15/2011 | CA2513533C Radially adjustable downhhole devices & methods for same |
| 02/15/2011 | CA2467465C Expandable tubes with overlapping end portions |
| 02/15/2011 | CA2466791C Premium tubular threaded joint comprising at least a threaded element with end lip |
| 02/10/2011 | WO2011017280A1 Riser segment rfid tag mounting system and method |
| 02/10/2011 | WO2011017278A1 Arc rfid antenna |
| 02/10/2011 | WO2011016997A2 Electrical penetrator assembly |
| 02/10/2011 | WO2011016933A2 Method and apparatus for providing a conductor in a tubular |
| 02/10/2011 | WO2010129198A3 Quick connect tool |
| 02/10/2011 | WO2010118186A3 Friction reducing wear band and method of coupling a wear band to a tubular |
| 02/10/2011 | US20110030973 Downhole Device |
| 02/10/2011 | US20110030971 Overshot Tool and Method |
| 02/10/2011 | US20110030945 Centralizer apparatus |
| 02/10/2011 | DE102010027065A1 Bohrrohr für eine Bohrvorrichtung zum Ausführen von Horizontalbohrungen Drill pipe for drilling apparatus for performing horizontal wells |
| 02/09/2011 | EP2281101A1 Aluminum riser assembly |
| 02/09/2011 | CN201739294U Locking device used for radial bearing static ring of drive shaft of spiral drilling rig |
| 02/09/2011 | CN201738915U Sealing and suppressing device of well sealing device for oil field |
| 02/09/2011 | CN201738906U Process tube string for thinning, viscosity-reducing and lifting thickened oil |
| 02/09/2011 | CN201738904U Perforating and production pipe column for oil field gas wells |
| 02/09/2011 | CN201738839U Righting mechanism |
| 02/09/2011 | CN201738838U Drill rod centering device |
| 02/09/2011 | CN201738837U Nonstandard 182.56 mm buttress thread casing joint |
| 02/09/2011 | CN201738836U Threading connector for pipes |
| 02/09/2011 | CN201738835U Three-section drill rod for rotary drilling rig |
| 02/09/2011 | CN201738834U Casting card connection device of drilling tool system of well drill |
| 02/09/2011 | CN201738833U Sucker rod coupling |
| 02/09/2011 | CN201738832U Back-off safety joint |
| 02/09/2011 | CN201738831U Anti-trip oil pumping rod |
| 02/09/2011 | CN201738830U Dill pipe joint used for underpit casing side tracking |
| 02/09/2011 | CN201738829U Pipe connector |
| 02/09/2011 | CN201738828U Pneumatic drill, sludge pump and drilling machine connection conversion joint |
| 02/09/2011 | CN201738827U Self-lubricating anti-eccentric-wear pumping rod coupling |
| 02/09/2011 | CN201738826U Flexible wire rope continuous sucker rod capable of communication |
| 02/09/2011 | CN201738825U Coaxial head swinging mud pipe device |
| 02/09/2011 | CN201738824U Ground drilling casing capable of preventing mining damage |
| 02/09/2011 | CN201738823U Threaded connection structure of externally thickened expansion pipe |
| 02/09/2011 | CN201738822U String for upper horizontal well cementation and lower screen pipe gravel pack completion |
| 02/09/2011 | CN201738821U Pre-bended continuous oil pipe |
| 02/09/2011 | CN201738820U Infiltration type composite pipe |
| 02/09/2011 | CN201738813U Well drilling equipment and well fixing equipment for radial horizontal well with ultra-short radius |
| 02/09/2011 | CN201738810U Full-hydraulic screw drilling machine |
| 02/09/2011 | CN201738008U Anode protector of oil sleeve |
| 02/09/2011 | CN1831341B Subsea pumping system for hydrocarbon compound fluid, method and subsea pump |
| 02/09/2011 | CN101970790A Spiral ribbed aluminum drillpipe |
| 02/09/2011 | CN101970789A Centraliser segment and centraliser |
| 02/09/2011 | CN101970788A Communication connections for wired drill pipe joints |
| 02/09/2011 | CN101967960A Dirt removal protection device for underground pumping unit |
| 02/09/2011 | CN101967959A Sealing protecting device for underground oil mining machine |