| Patents for E21B 17 - Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings (27,800) |
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| 05/01/2013 | CN202913975U Damping device for cutting drilling machine power head |
| 05/01/2013 | CN202913974U Oil pipe for oil and gas wells |
| 05/01/2013 | CN202913973U High-pressure abrasion-resistant drill rod used for coal mine |
| 05/01/2013 | CN202913972U Weight control torque selective transmission mechanism |
| 05/01/2013 | CN202913971U Double-coupling rod post and lifting and dropping suite thereof |
| 05/01/2013 | CN202913970U 抽油杆接箍 Sucker rod couplings |
| 05/01/2013 | CN202913969U Large-drift-diameter selected injection and exploitation integrated tubular column of heavy oil well |
| 05/01/2013 | CN202913968U Double-coupling pipe post and lifting and dropping suite thereof |
| 05/01/2013 | CN202913967U Petroleum sucker rod |
| 05/01/2013 | CN202913966U Well-used surface casing pipe on coal bed methane |
| 05/01/2013 | CN202913965U Inner liner anti-wear anti-corrosion oil pipe |
| 05/01/2013 | CN103075134A Automatic matching injection tubular column for injecting air and steam |
| 05/01/2013 | CN103075121A Integrated micro-elastic casing centralizer and production method thereof |
| 05/01/2013 | CN103075117A Pipe shoe for water-insulating conduit to penetrate quickly |
| 05/01/2013 | CN103075116A Riser pipe shoe |
| 05/01/2013 | CN103075115A Double-thread quick sleeve joint |
| 05/01/2013 | CN103075114A Coupling |
| 05/01/2013 | CN103075113A Coal bed gas collecting pipe and processing method thereof |
| 05/01/2013 | CN103075112A Fibre reinforced composite anti-eccentric coiled rod as well as preparation device and preparation method thereof |
| 05/01/2013 | CN103075111A Coiled tubing with different strength sections and manufacturing method thereof |
| 05/01/2013 | CN103074888A Two-wheel-driven bidirectional heavy-pipe deep stirring ground wall connecting machine |
| 05/01/2013 | CN103074887A Drilling/spraying integrated foundation treatment method and special drilling rig component |
| 05/01/2013 | CN101881160B Fixed point sampler |
| 05/01/2013 | CN101864921B Well completion and oil production string of horizontal well and well completion and oil production processes thereof |
| 05/01/2013 | CN101824960B Full-hydraulic screw drilling machine |
| 05/01/2013 | CN101713286B Electromagnetic system for detecting distance between adjacent wells while drilling |
| 05/01/2013 | CN101566048B Bi-steel percussive drill rod |
| 05/01/2013 | CN101287888B Well having inductively coupled power and signal transmission |
| 04/30/2013 | US8430167 Arcuate control line encapsulation |
| 04/30/2013 | US8430160 Wellbore method and apparatus for completion, production and injection |
| 04/30/2013 | US8430159 Method of expanding a tubular element in a wellbore |
| 04/30/2013 | CA2711329C Bottom hole assembly with ported completion and methods of fracturing therewith |
| 04/30/2013 | CA2702020C Modular connector and method |
| 04/30/2013 | CA2653343C Well string centralizer and method of forming |
| 04/30/2013 | CA2545765C Steerable drilling system |
| 04/28/2013 | CA2775502A1 High strength pipe thread protector |
| 04/27/2013 | CA2791650A1 Artificial lift system for well production |
| 04/25/2013 | WO2013059327A1 Downhole tool impact dissipating tool |
| 04/25/2013 | WO2013059122A1 Riser string hang-off assembly |
| 04/25/2013 | WO2013059121A1 Gooseneck conduit system |
| 04/25/2013 | WO2013057445A1 Method for installing a self-supporting tower for extracting hydrocarbons |
| 04/25/2013 | WO2013056790A1 Tubular drill stem component and method for tensioning a communication tube mounted in said component |
| 04/25/2013 | WO2013056444A1 Method for monitoring drill rod of mechanical lock drilling rig and controller, monitoring system and drilling rig |
| 04/25/2013 | WO2012177559A3 Gooseneck conduit system |
| 04/25/2013 | WO2012166928A3 Downhole tools having radially expandable seat member |
| 04/25/2013 | WO2012061506A3 A drilling system and a device for assembling and disassembling pipe stands |
| 04/25/2013 | WO2012028838A3 Releasable connector assembly for tubing and tool deployment system |
| 04/25/2013 | US20130098798 Pipe transport system |
| 04/25/2013 | US20130098690 Repaired wear and buckle resistant drill pipe and related methods |
| 04/25/2013 | US20130098687 Wear and buckling resistant drill pipe |
| 04/25/2013 | US20130098629 Method and apparatus for removing liquid from a horizontal well |
| 04/25/2013 | US20130098602 Production tubing for oil wells made of a composite material of continuous carbon fibre |
| 04/25/2013 | US20130098601 Sucker Rod Guide |
| 04/25/2013 | CA2851823A1 Downhole tool impact dissipating tool |
| 04/25/2013 | CA2792755A1 Sucker rod guide |
| 04/24/2013 | EP2584137A2 Wear and buckling resistant drill pipe and repair methods |
| 04/24/2013 | EP2584136A2 Variable Geometry Auger Coupler |
| 04/24/2013 | EP2582906A1 Grinding arrangement for tool joints on a drill string |
| 04/24/2013 | CN202900249U Internal connection plug for headstall for testing |
| 04/24/2013 | CN202900220U Novel lock claw type sleeve thermal stress compensator |
| 04/24/2013 | CN202900205U Multifunctional formation testing well completion integral pipe column |
| 04/24/2013 | CN202900166U Novel sucker rod righting paraffin scraper |
| 04/24/2013 | CN202900137U Thermal production well multifunctional leakage-proof packing box |
| 04/24/2013 | CN202900107U Drilling tool deslagging device of drilling machine |
| 04/24/2013 | CN202900099U Wellhead device of concentric double-skin tubular column reverse circulation continuous flushing coal powder system |
| 04/24/2013 | CN202900078U Horizontal well section cuttings bed cleaning tool |
| 04/24/2013 | CN202900077U Non-magnetic drill collar |
| 04/24/2013 | CN202900076U Anti-eccentric wear device for screw pump |
| 04/24/2013 | CN202900075U Orientation anti-broken support of gadder drill rod |
| 04/24/2013 | CN202900074U 抽油杆扶正器 Sucker rod centralizer |
| 04/24/2013 | CN202900073U High-inclination well hollow sucker rod self-righting device |
| 04/24/2013 | CN202900072U Thick oil thermal production well oil pipe steam injection pipe column centralizing device |
| 04/24/2013 | CN202900071U Pumping-assistance straightening device for oil pumping rod |
| 04/24/2013 | CN202900070U A combined deviation-preventing drill stem for safe and rapid drilling of vertical wells |
| 04/24/2013 | CN202900069U Casing centralizer |
| 04/24/2013 | CN202900068U Special screwed joint for oil casings |
| 04/24/2013 | CN202900067U Pumping well polish rod damping device |
| 04/24/2013 | CN202900066U Externally-flush geological drill rod using double-top double-cone connection form |
| 04/24/2013 | CN202900065U Drill rod |
| 04/24/2013 | CN202900064U Flange head |
| 04/24/2013 | CN202900063U Air-tight seal oil tube threaded connector |
| 04/24/2013 | CN202900062U High strength sucker rod with small rod body and large threads |
| 04/24/2013 | CN202900061U Novel casing |
| 04/24/2013 | CN202900060U Process string for coiled tubing perforation, casing fracturing and bridge plug packing |
| 04/24/2013 | CN202900059U Non-magnetic pressure bearing drilling rod |
| 04/24/2013 | CN202900058U Combined limit-type anti-flaring combined sealing drill stem |
| 04/24/2013 | CN202900057U Tubing string for paraffin removal from oil well |
| 04/24/2013 | CN202900056U Anticorrosion pole pipe with polymer coating |
| 04/24/2013 | CN202900044U Double stabilizer prebuckling dynamics pendulum drilling assembly |
| 04/24/2013 | CN202899125U Four-axis cement mixing pile construction equipment for foundation reinforcement or foundation pit supporting |
| 04/24/2013 | CN202897869U Multifunctional telescopic crane |
| 04/24/2013 | CN103069108A Apparatus and methods for real time communication in drill strings |
| 04/24/2013 | CN103069107A Apparatus and methods for real time communication between drill bit and drilling assembly |
| 04/24/2013 | CN103061691A Anti-deviation drill collar |
| 04/24/2013 | CN103061690A Waterproof pipe shoe V-shaped tooth device |
| 04/24/2013 | CN103061689A Waterproof pipe shoe wedge tooth device |
| 04/24/2013 | CN103061688A Automatic gravitational rod string deviation adjuster |
| 04/24/2013 | CN103061687A Rod stabilizing device for rotary drill rig |
| 04/24/2013 | CN103061686A Anticorrosion centralizer for sucker rod |
| 04/24/2013 | CN103061685A Downhole drilling tool and anti-loosening self-locking structure thereof |