Patents
Sitemap › E21 - Earth or rock drilling; Mining › E21B - Earth or rock drilling; Obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells › E21B 17 - Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings
Patents for E21B 17 - Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings (27,800)
09/2012
09/05/2012EP2494560A2 Fiber reinforced reelable slickline
09/05/2012CN202417380U Autorotation oil producing well head device
09/05/2012CN202417364U Releasing tool for hydraulic suspension packer
09/05/2012CN202417345U Excavated soil conveyer of drilling machine
09/05/2012CN202417344U Wear-resistant triangular drill collar for petroleum drilling
09/05/2012CN202417343U Rotatable casing shoe
09/05/2012CN202417342U Drilling tool joint convenient for inclination measurement operation
09/05/2012CN202417341U Rotary drilling rig, drilling stem and belt rod preventing device for drilling stem
09/05/2012CN202417340U Threading connector for oil well pipe
09/05/2012CN202417339U Oil drill pipe for rapid make-up and break-out well workover
09/05/2012CN202417338U Oil drill pipe for well repair
09/05/2012CN202417337U Oil drilling pipe for well repairing with torsion-resistant shoulders
09/05/2012CN202417336U Straight-through drill rod
09/05/2012CN202417335U Connecting-tripping device for SAGD (steam assisted gravity drainage) well
09/05/2012CN202417334U Device for adjusting short sections of oil pipes
09/05/2012CN202417333U Special connector of oilfield pipeline
09/05/2012CN202417332U Connector structure for thread connection of oil tube or sleeve
09/05/2012CN202417331U Sucker rod rotary joint capable of axially translating and automatically centering
09/05/2012CN202417330U Drilling anti-collapse device suitable for embedding pore pressure gauge in different depths
09/05/2012CN202417329U Sand settling pipe for electric submersible pump well
09/05/2012CN202417328U Fixed sleeve sealed by kelps
09/05/2012CN202417327U Telescopic rotation device for well completion of branch well
09/05/2012CN202416299U Multi-axis continuous cement-soil stirring pile device
09/05/2012CN102656335A Inhibiting liquid loading, corrosion and/or scaling in oilfield tubulars
09/05/2012CN102654037A Gas-sealed sleeve end part thread and collar thread structure for unconventional gas field
09/05/2012CN102654036A Threaded nipple for heavy oil thermal recovery well
09/05/2012CN102654035A Bottom drilling tool combination structure for coiled tubing drilling or drilling
09/05/2012CN102654034A Drilling rod
09/05/2012CN102653844A Electric-resistance-welded steel pipe resisting acidic environment corrosion and preparation method thereof
09/05/2012CN101644136B Combination of reaming stabilizer and bottom drilling device
09/05/2012CN101581218B Device and method for convenient measurement while drilling of coal bed gas parameters
09/05/2012CN101506461B Coupling device
09/04/2012US8256993 Hybrid riser towers and fabrication thereof
09/04/2012US8256516 System and method for providing a downhole mechanical energy absorber
09/04/2012US8256509 Compact jar for dislodging tools in an oil or gas well
09/04/2012CA2766797A1 Drill rod
08/2012
08/30/2012WO2012116036A2 Coated sleeved oil gas well production devices
08/30/2012WO2012115810A1 System and method for high-pressure high-temperature tieback
08/30/2012WO2012115779A2 Inground drill string housing and methods for signal coupling
08/30/2012WO2012115778A2 Drill string adapter and method for inground signal coupling
08/30/2012WO2012115523A1 Cleaning and doping device for drill pipe and drill collar
08/30/2012WO2012113825A1 Electromagnetic coupler
08/30/2012US20120217023 Drill string adapter and method for inground signal coupling
08/30/2012US20120217016 Riser tensioner
08/30/2012US20120217009 Positioning tool
08/30/2012DE112009003710T5 Vorrichtung und Verfahren zum Anbringen von Schallsensoren näher an einer Bohrlochwand Apparatus and method for applying sound sensors closer to a borehole wall
08/30/2012DE10359880B4 Bohrgestängesystem mit einem flexiblen Biegeelement und Verfahren zum optimierten Richtungsbohren Bohrgestängesystem with a flexible bending element and method for optimized directional drilling
08/29/2012EP2492361A2 High strength steel pipe with excellent toughness at low temperature and good sulfide stress corrosion cracking resistance
08/29/2012EP2491222A2 Expandable liner tieback connection
08/29/2012CN202402024U Spiral pipe structure for blocking media and transmitting pressure
08/29/2012CN202402010U Shock obstruction -removal efficiency oil extraction device
08/29/2012CN202401989U Device for acquiring and controlling mining data
08/29/2012CN202401988U Stabilizer
08/29/2012CN202401987U Integral sliding-bush type sucker rod wear-resistant centralizer
08/29/2012CN202401986U Recyclable fly pipe
08/29/2012CN202401985U Drill stem guide head
08/29/2012CN202401976U Long-service-life drill tool provided with coatings
08/29/2012CN102650195A Drill rod reducing joint of friction-type rotary drilling rig
08/29/2012CN102650194A Drill rod reducing joint of lock-type rotary drilling rig
08/29/2012CN102162248B Method for forming variable-cross-section compaction thread pile and compaction drilling tool
08/29/2012CN101975032B High efficiency torsion resistant drill rod joint with good sealing performance
08/29/2012CN101915065B Hemispherical drill stem for rotary drilling rig
08/29/2012CN101730810B Threaded joint with pressurizable seal
08/29/2012CN101711321B Method for improving fatigue resistance of a threaded joint
08/28/2012US8251139 System and method for sealing couplings in downhole tubing strings
08/23/2012WO2012112799A2 Conduit assembly and method of making and using same
08/23/2012WO2012112668A2 Surface close proximity wells
08/23/2012WO2012112504A1 Instrument for centering tools within a wellbore
08/23/2012WO2012112271A1 Travel joint having an infinite slot mechanism for space out operations in a wellbore
08/23/2012WO2012109829A1 Rotary lock block type drilling riser connector
08/23/2012US20120211235 Conduit assembly and method of making and using same
08/23/2012US20120211234 Deepwater containment system and method of using same background
08/23/2012US20120211231 Segmented Fiber Optic Coiled Tubing Assembly
08/23/2012US20120211224 Wireless downhole tool positioning system
08/23/2012CA2831842A1 Instrument for centering tools within a wellbore
08/23/2012CA2827660A1 System and method for tracking pipe activity on a rig
08/23/2012CA2827490A1 Conduit assembly and method of making and using same
08/23/2012CA2820842A1 Travel joint having an infinite slot mechanism for space out operations in a wellbore
08/22/2012EP2489824A2 Scuttle for the monitoring and inspection of a flexible riser
08/22/2012EP2489754A2 Hollow drilling steel rod and method of manufacturing the same
08/22/2012EP2035646B1 Multi-sectional percussive drill bit assembly
08/22/2012EP1989390B1 Running bore-lining tubulars
08/22/2012EP1834063B1 Threads with perturbations
08/22/2012CN202391400U Gravel-filled moderate water control device
08/22/2012CN202391386U Combination clearing device for seriously-formed scale of oil-water well drivepipe
08/22/2012CN202391360U Anti-break sucker rod suspending device
08/22/2012CN202391357U Centering arm structure of multi-arm elastic sheet type idler wheel centering guide
08/22/2012CN202391356U Roller centering device for petroleum drill
08/22/2012CN202391355U Protective cap of oil well pipe
08/22/2012CN202391354U Centralizer
08/22/2012CN202391353U Non-collar connection thread for petroleum oil pipe and casing
08/22/2012CN202391352U Rotatable type anti-eccentric-wear oil-sucking rod connecting hoop
08/22/2012CN202391351U Waterproof sleeve connecting device
08/22/2012CN202391350U Anti-dropping device for pipe column in operation construction in casing-deformation oil-water well
08/22/2012CN102644446A Device and method for suppressing vortex-induced vibration of marine vertical pipes and pipelines
08/22/2012CN102644445A Self-lubricating method and structure of roller type stabilizer and roller component of redresser
08/22/2012CN102644444A Double-seal anti-corrosion water injection well oil pipe
08/22/2012CN102644443A Multifunctional casing pipe and preparation method thereof
08/22/2012CN102644442A Ultra-viscous crude oil injection-production integrated technique tubular pile
08/22/2012CN102644441A Cone drill rod and manufacturing method thereof
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