| Patents for E21B 17 - Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings (27,800) |
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| 02/20/2013 | CN202745725U 隔热管扶正器 Insulated pipe centralizers |
| 02/20/2013 | CN202745724U Centering device for underground probe type measuring instrument |
| 02/20/2013 | CN202745723U Shearing release connector for continuous pipe |
| 02/20/2013 | CN202745722U Anti-off cardan shaft short section of screw drilling tool |
| 02/20/2013 | CN202745721U Gas drainage drill rod |
| 02/20/2013 | CN202745720U Geological drill pipe |
| 02/20/2013 | CN202745719U Drilling tool screwed joint with lengthening sections |
| 02/20/2013 | CN202745718U Electric coal drill |
| 02/20/2013 | CN202745717U High-pressure-resistant drill bit |
| 02/20/2013 | CN202745716U 螺丝头 Screw head |
| 02/20/2013 | CN202745715U Zero-leakage anti-reversing union |
| 02/20/2013 | CN202745714U Connecting-tripping device of oil-well pump |
| 02/20/2013 | CN202745713U Blowout-prevention hanger for bevel type sucker rod |
| 02/20/2013 | CN202745712U Eccentric adapter connector |
| 02/20/2013 | CN202745711U Hollow concave grooved prismatic drill rod |
| 02/20/2013 | CN202745710U Flameout preventing drill pipe |
| 02/20/2013 | CN202745709U Zinc diffusion anti-corrosion centralizing sucker rod |
| 02/20/2013 | CN202745708U Anti-corrosion sucker rod with plasticized modified epoxy powder layer |
| 02/20/2013 | CN202745707U Coiled tubing operation operating window |
| 02/20/2013 | CN202745706U Sleeve with annular grooves on outer wall |
| 02/20/2013 | CN202745059U Long spiral drilling machine for rigid composite foundation pre-grouting |
| 02/20/2013 | CN202745045U Pressure-retaining device for long spiral drilling machine |
| 02/20/2013 | CN102939431A Wear pad adjustment assembly |
| 02/20/2013 | CN102938284A Anti-corrosion magnetic strip for magnetically-supported pumping rod centralizer |
| 02/20/2013 | CN102937006A Centralizer |
| 02/20/2013 | CN102937005A Steel pipe direct-connection and rotary-connection lengthening structure with threaded and radial sealing |
| 02/20/2013 | CN102936687A 110ksi-level ERW (electric resistance welding) steel belt for oil casings and production method thereof |
| 02/20/2013 | CN102168530B Pressure drilling device for a drill stem and a using method thereof |
| 02/20/2013 | CN102121356B Helical strake vortex induced vibration inhibiting device |
| 02/20/2013 | CN101864897B Method for controlling eccentric displacement vector of rotary steering tool |
| 02/19/2013 | US8376053 Fluid flow conduit, method and use |
| 02/14/2013 | WO2013022733A2 Compositions, methods of coating wellbore tools with such compositions, and wellbore tools coated with such compositions |
| 02/14/2013 | WO2013022691A2 Multilateral location and orientation assembly |
| 02/14/2013 | WO2013022478A1 Sucker rod apparatus and method |
| 02/14/2013 | WO2013022449A1 Systems and methods for locking swivel joints when performing subterranean operations |
| 02/14/2013 | WO2013003153A3 Systems and methods to reduce oscillations in magnetic couplings |
| 02/14/2013 | US20130039692 Sucker rod apparatus and method |
| 02/14/2013 | US20130039691 Sucker rod apparatus and method |
| 02/14/2013 | US20130037326 Device for uncoupling a drill string, drilling system comprising such a uncoupling device, and use of such a system |
| 02/14/2013 | CA2844641A1 Sucker rod apparatus and method |
| 02/14/2013 | CA2844479A1 Systems and methods for locking swivel joints when performing subterranean operations |
| 02/14/2013 | CA2844309A1 Method and apparatus for connecting tubulars of a wellsite |
| 02/13/2013 | EP2557266A1 Downhole swivel apparatus and method |
| 02/13/2013 | EP2556308A2 Method for introducing an elongated element, in particular geo-thermal heat exchanger, into the soil |
| 02/13/2013 | EP2556283A1 Riser components and methods for making the same |
| 02/13/2013 | EP2556205A2 Two-part drilling tool for the percussive or rotary percussive drilling of holes in soil material or rock material |
| 02/13/2013 | CN202731887U Multifunctional simulation test well |
| 02/13/2013 | CN202731849U Wear-resisting permanent magnet paraffin controller for sucker rod |
| 02/13/2013 | CN202731832U Grouting pipe for underground water plugging |
| 02/13/2013 | CN202731780U Reamer |
| 02/13/2013 | CN202731779U Single-step threaded drill collar |
| 02/13/2013 | CN202731778U Drill collar lifting device |
| 02/13/2013 | CN202731777U Ring type sucker rod centralizer |
| 02/13/2013 | CN202731776U Tooth groove type exchangeable centralizer |
| 02/13/2013 | CN202731775U Cable anti-collision device for electric submersible pump |
| 02/13/2013 | CN202731774U Sucker rod positioning centering device |
| 02/13/2013 | CN202731773U Double-eccentric correction device of well opening packaging box |
| 02/13/2013 | CN202731772U Clamping claw and support ring control suspended type blowout prevention connecting-tripping device |
| 02/13/2013 | CN202731771U Inverted-cup-shapesafety joint |
| 02/13/2013 | CN202731770U Drilling tool joint with stress reduction groove arranged in outer threads |
| 02/13/2013 | CN202731769U Double-cone-surface double-shoulder thread drilling rig |
| 02/13/2013 | CN202731768U Drill rod coupling of down-the-hole drill |
| 02/13/2013 | CN202731767U 钻孔机 Drill |
| 02/13/2013 | CN202731766U Oil extraction wellhead electric heater safe valve conversion connector |
| 02/13/2013 | CN202731765U Cone surface butt joint double-shoulder drilling tool joint |
| 02/13/2013 | CN202731764U Wax removal eccentric-wear-preventing type hollow sucker rod |
| 02/13/2013 | CN202731763U Special corrosion-resistant oil tube for oil fields |
| 02/13/2013 | CN202731762U High pressure seal triangular drill stem for mining |
| 02/13/2013 | CN202731761U Polish rod drop prevention back cap |
| 02/13/2013 | CN202731760U Hot-water-injection high-pressure insulating tubular column |
| 02/13/2013 | CN202731741U Submersible pump type pneumatic DTH (Down-the-hole) hammer reverse circulation drilling machine |
| 02/13/2013 | CN102926689A Drilling cuttings amount collector |
| 02/13/2013 | CN102926679A Spiral wear-resistant drill collar |
| 02/13/2013 | CN102926678A Long-tail-pipe well washing protector for preventing corrosion of casing |
| 02/13/2013 | CN102926677A Long-tail-pipe oil pumping pipe column for preventing corrosion of casing |
| 02/13/2013 | CN102926676A String centralizer |
| 02/13/2013 | CN102926675A Sucker rod centering device |
| 02/13/2013 | CN102926674A Low pressure gas seal special screwed joint |
| 02/13/2013 | CN102926673A Destabilization-prevention oil pipe joint |
| 02/13/2013 | CN102926672A Buoyancy-dispersed sucker rod joint |
| 02/13/2013 | CN102926671A Thread and end face sealing structure for lengthening steel pipes through direct connection and rotary connection |
| 02/13/2013 | CN102926670A Direct-connection rotating-connecting lengthening structure of steel tube for oil-gas field exploitation |
| 02/13/2013 | CN102926669A Triple sealing structure for lengthening steel pipes through direct connection and rotary connection |
| 02/13/2013 | CN102926668A Destabilization-prevention oil pipe compensator |
| 02/13/2013 | CN102926658A Wheel drilling machine |
| 02/13/2013 | CN102925821A Steel for non-magnetic high-strength corrosion-resisting drill collar and manufacture method of steel |
| 02/13/2013 | CN102108835B Motor impact transmission shaft |
| 02/13/2013 | CN102003149B Screw pump sucker rod connector |
| 02/13/2013 | CN101839114B Energy-saving anticorrosive abrasion-proof sucker rod |
| 02/12/2013 | CA2585564C Rock drill bit |
| 02/09/2013 | CA2778018A1 Polished rod with latching section |
| 02/07/2013 | WO2013019754A2 Method and portable apparatus for forcing a pipeline into or out of a borehole |
| 02/07/2013 | WO2013019746A2 Method and apparatus for forcing a pipeline into or out of a borehole |
| 02/07/2013 | WO2013019407A2 Traversing a travel joint with a fluid line |
| 02/07/2013 | WO2013017742A1 Flexible pipe with injection tube and method for transporting a petroleum effluent |
| 02/07/2013 | WO2012116984A3 Tubular component for drill stem capable of being cabled, and method for mounting a cable in said component |
| 02/07/2013 | WO2012004000A3 Downhole inductive coupler assemblies |
| 02/07/2013 | WO2012003999A3 Inductive couplers for use in a downhole environment |
| 02/07/2013 | WO2011154721A3 Cutting assembly |
| 02/07/2013 | US20130033035 Pipe Connector Device |