| Patents for E21B 17 - Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings (27,800) |
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| 04/24/2013 | CN103061684A Open-hole horizontal well sectional multi-cluster uniform acidizing tubular column and acidizing method thereof |
| 04/24/2013 | CN103061683A Dual-purpose tool as drill stem and well completion sieve tube |
| 04/24/2013 | CN103061682A Single section drill rod for achieving TEM (transverse electromagnetic) wave transmission |
| 04/24/2013 | CN103061681A Drill rod for rotary drilling rig and rotary drilling rig |
| 04/24/2013 | CN102251749B Phi 406-phi 130 large-caliper petroleum casing pipe variable-diameter joint and manufacturing method thereof |
| 04/24/2013 | CN102174878B Manufacturing method of special type oil well pipe with changed materials and structural layers at two ends |
| 04/24/2013 | CN101827996B Drill-string shock absorbers |
| 04/24/2013 | CA2793163A1 Thermal ratchet system |
| 04/23/2013 | CA2722096C Method of controlling torque applied to a tubular connection |
| 04/23/2013 | CA2711195C Progressive cavity apparatus with transducer and methods of forming and use |
| 04/21/2013 | CA2791599A1 Wear and buckling resistant drill pipe and repair methods |
| 04/21/2013 | CA2756639A1 Production tubing for oil wells made of a composite material of continuous carbon fibre |
| 04/18/2013 | WO2013055600A1 Arc guiding, gripping and sealing device for magnetically impelled butt welding rig |
| 04/18/2013 | WO2013055590A1 Steering head with integrated drilling dynamics control |
| 04/18/2013 | WO2013055582A1 Hydraulically set resettable liner hanger |
| 04/18/2013 | WO2013053450A1 Threaded tubular component and resulting connection |
| 04/18/2013 | WO2013053449A2 Tubular component for drill stem provided with a transmission sheath fixed by threadings, and method for installing said component |
| 04/18/2013 | WO2013053225A1 Rescue machine for tunnel collapses |
| 04/18/2013 | WO2013028517A3 Universal pipe thread protector |
| 04/18/2013 | WO2013012572A3 Frangible slip for downhole tools |
| 04/18/2013 | WO2012174101A3 Corrodible downhole article and method of removing the article from downhole environment |
| 04/18/2013 | WO2012172305A3 Riser assembly and method |
| 04/18/2013 | WO2012138912A4 Offshore top tensioned riser buoyancy can system and methods of field development |
| 04/18/2013 | US20130095712 Riser floatation with anti-vibration strakes |
| 04/18/2013 | US20130092447 Downhole Tool Impact Dissipating Tool |
| 04/18/2013 | US20130092390 Dynamic riser string hang-off assembly |
| 04/18/2013 | US20130092389 Piping system having an insulated annulus |
| 04/18/2013 | US20130092388 Gooseneck conduit system |
| 04/18/2013 | US20130092386 Riser String Hang-Off Assembly |
| 04/18/2013 | CA2851902A1 Threaded tubular component and resulting connection |
| 04/18/2013 | CA2850007A1 Hydraulically set resettable liner hanger |
| 04/18/2013 | CA2849825A1 Method for real-time monitoring and transmitting hydraulic fracture seismic events to surface using the pilot hole of the treatment well as the monitoring well |
| 04/17/2013 | EP2581546A2 Mining rescue device |
| 04/17/2013 | CN202882905U Portable geological exploration sampling drill |
| 04/17/2013 | CN202882900U Coded lock capable of glowing and sounding |
| 04/17/2013 | CN202882890U Press cover type bypass for horizontal well |
| 04/17/2013 | CN202882794U Centralizer for sand-lifting pumping-assistant sucker rod of pumping well |
| 04/17/2013 | CN202882793U Ball type sucker rod eccentric wear resistant coupling |
| 04/17/2013 | CN202882792U Inflatable centering device used for sleeve pipes |
| 04/17/2013 | CN202882791U Torque reducing tool for well drilling and capable of being used for finishing well wall |
| 04/17/2013 | CN202882790U Anti-drop joint structure of reinforced screw drill |
| 04/17/2013 | CN202882789U Anti-tripping device of sucker rod |
| 04/17/2013 | CN202882788U Rotary sucker rod coupling |
| 04/17/2013 | CN202882787U Convert coupling and tubular column for mining shale gas |
| 04/17/2013 | CN202882786U Wireline log blowout prevention pup joint |
| 04/17/2013 | CN202882785U Inner inserting-pulling connecting tool on pipe wall |
| 04/17/2013 | CN202882784U Terminal adaptor for offshore drilling riser |
| 04/17/2013 | CN202882783U Upward-rotation and downward-slide well drilling friction-reducing torsion-reducing tool |
| 04/17/2013 | CN202882782U Connector of air supply and water supply of drill rod |
| 04/17/2013 | CN202882781U Drill rod for preventing cast tube from grouting |
| 04/17/2013 | CN202882780U Electric submersible pump production pipe column |
| 04/17/2013 | CN202882762U Rotational flow auxiliary angle-building tool |
| 04/17/2013 | CN202882754U Upright structure used on full-sleeve full-slewing drilling machine |
| 04/17/2013 | CN103052562A A flexible pipe system |
| 04/17/2013 | CN103046908A Concentric type exhausting and blending-light oil production pipe string of fire flooding effect reception well |
| 04/17/2013 | CN103046879A Joint structure for casing thread with outside diameter of 508-622.3mm |
| 04/17/2013 | CN103046878A Unconventional BC thread casing joint |
| 04/17/2013 | CN103046877A Anti-dropping mechanism of quick joint |
| 04/17/2013 | CN103046876A Prospection drill rod with ultralarge caliber in 11-1/4 inches |
| 04/17/2013 | CN103046875A Prospection drill rod with ultralarge caliber in 12-3/4 inches |
| 04/17/2013 | CN103046552A Drilling and jetting integrated foundation treatment bottomhole assembly |
| 04/17/2013 | CN102287144B Well pipeline guider |
| 04/17/2013 | CN102230362B Geared drill stabilizer repairing method |
| 04/17/2013 | CN102146772B Rotary locking piece type drilling riser connector |
| 04/17/2013 | CN102094575B Breaking mechanism with rotatable drill rod |
| 04/16/2013 | US8418784 Central cutting region of a drilling head assembly |
| 04/16/2013 | US8418771 Method and apparatus for releasing a coiled tubing internal conduit from a bottom hole assembly |
| 04/11/2013 | WO2013052285A1 Reinforcing amorphous pla with solid particles for downhole applications |
| 04/11/2013 | WO2013052038A1 Debris resistant internal tubular testing system |
| 04/11/2013 | WO2013050978A2 Tubular apparatus for the continuous completion of hydrocarbon wells, and corresponding laying method |
| 04/11/2013 | WO2013050231A2 Damper unit and drill string system comprising such a damper unit |
| 04/11/2013 | WO2013050131A1 Drill stem element and corresponding drill pipe |
| 04/11/2013 | WO2013015966A3 Damping assembly for downhole tool deployment and method thereof |
| 04/11/2013 | WO2013006786A3 Methods of forming protecting coatings on substrate surfaces and devices including such protective coatings |
| 04/11/2013 | WO2013003153A4 Systems and methods to reduce oscillations in magnetic couplings |
| 04/11/2013 | US20130087324 Re-latch mechanism for wellbore liner system |
| 04/11/2013 | CA2850392A1 A riser system for transporting a slurry from a position adjacent to the seabed to a position adjacent to the sea surface |
| 04/11/2013 | CA2849883A1 Reinforcing amorphous pla with solid particles for downhole applications |
| 04/10/2013 | EP2578796A2 Expandable centralizer for expandable pipe string |
| 04/10/2013 | EP2578795A1 Damper unit and drill string system comprising such a damper unit |
| 04/10/2013 | EP2576969A1 Enhanced smear effect fracture plugging process for drilling systems |
| 04/10/2013 | EP2576333A1 A flexible pipe system |
| 04/10/2013 | CN202866795U Position detector for dislocation and offcenter of mechanical horizontal well sleeve pipe |
| 04/10/2013 | CN202866768U Glass fiber reinforced plastic casing string |
| 04/10/2013 | CN202866739U Oil extraction seal device for oil well |
| 04/10/2013 | CN202866710U Breaking key tool for keyway formed in petroleum drilling |
| 04/10/2013 | CN202866689U Torque-bearing centralizing power slip |
| 04/10/2013 | CN202866684U Connection device for helical drill rod and helical drill rod assembly using connection device |
| 04/10/2013 | CN202866683U Vacuum double-layer hollow oil pumping rod |
| 04/10/2013 | CN202866682U Self-localization casing centralizer |
| 04/10/2013 | CN202866681U Multiple-effect drilling tool stabilizer |
| 04/10/2013 | CN202866680U Well mouth sucker rod centering device of oil well |
| 04/10/2013 | CN202866679U Engineering driller drill stem protective device |
| 04/10/2013 | CN202866678U Movable butterfly-shaped centering guide device of casing pipe |
| 04/10/2013 | CN202866677U Rotational flow centering guide |
| 04/10/2013 | CN202866676U Glass fiber reinforced plastic sleeving wellhead connector |
| 04/10/2013 | CN202866675U Anti-stretching oval joint with external threads |
| 04/10/2013 | CN202866674U Full-hydraulic crawler-type deep hole drilling car power shaft |
| 04/10/2013 | CN202866673U Clamping claw type release connector |
| 04/10/2013 | CN202866672U Anti-dropping connector of oil sucker rod |