| Patents for E21B 17 - Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings (27,800) |
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| 08/13/2013 | US8505653 Downhole apparatus |
| 08/13/2013 | US8505638 Restricted axial movement locking mechanism |
| 08/13/2013 | US8505637 System and method for forming a coiled tubing connection |
| 08/13/2013 | US8505624 Integral pull-through centralizer |
| 08/13/2013 | CA2707572C System for controlling elongation of a conduit within which flowable material is conveyed |
| 08/13/2013 | CA2680996C Method of sorting used tubular goods prior to reclaiming or reconditioning |
| 08/13/2013 | CA2570344C Apparatus and methods for self-powered communication and sensor network |
| 08/13/2013 | CA2551364C Coiled tubing dimple connection |
| 08/08/2013 | WO2013116090A1 Passive offshore tension compensator assembly |
| 08/08/2013 | WO2013113316A1 Bend limiter |
| 08/08/2013 | WO2012090227A3 Coupler with bonding surface |
| 08/08/2013 | US20130199845 Wellsite Communication System and Method |
| 08/08/2013 | US20130199799 Contraction joint system |
| 08/08/2013 | US20130199798 Temporary protective cover for operative devices |
| 08/07/2013 | EP2623707A1 Method and system for improving drilling speed by using drill string vibration |
| 08/07/2013 | EP2622166A2 Drilling system for enhanced coring and method |
| 08/07/2013 | EP2622050A2 Joints having improved sealability, lubrication and corrosion resistance |
| 08/07/2013 | CN203114261U Supporting type high-pressure layering water injection tubular column |
| 08/07/2013 | CN203114204U Spiral drill collar having high resistance to abrasion |
| 08/07/2013 | CN203114203U Novel drilling tool stabilizer |
| 08/07/2013 | CN203114202U Oil pumping unit well polish rod protective device |
| 08/07/2013 | CN203114201U Centering device used for non-excavating construction |
| 08/07/2013 | CN203114200U Acute-angle eight-directional integrated vane type sucker rod centralizer |
| 08/07/2013 | CN203114199U Flush double-layer tungsten carbide wear-resisting belt |
| 08/07/2013 | CN203114198U Arc rib elastic centralizer |
| 08/07/2013 | CN203114197U Connection structure of integral type elastic centering device |
| 08/07/2013 | CN203114196U Engineering drill rod centralizer |
| 08/07/2013 | CN203114195U Special threaded bushing |
| 08/07/2013 | CN203114194U Drill stem protector used for absorbing drill stem impact vibration |
| 08/07/2013 | CN203114193U Tubular column connecting joint for multilateral well cementation |
| 08/07/2013 | CN203114192U Intelligent Y joint allowing plug removal |
| 08/07/2013 | CN203114191U Glass fiber reinforced plastic oil pipe wound at small angle |
| 08/07/2013 | CN203114190U Rock drilling drill stem |
| 08/07/2013 | CN203114189U Core tube |
| 08/07/2013 | CN203114188U Engineering driller drill stem |
| 08/07/2013 | CN203114187U Abrasion-resistant and corrosion-resistant dual-metal composite oil pipe fully covered with coatings |
| 08/07/2013 | CN203114186U Drill rod with protective sleeve |
| 08/07/2013 | CN203114185U Drill rod guide sleeve for rotary drill |
| 08/07/2013 | CN203114178U Reamer of anti-jamming drill |
| 08/07/2013 | CN203114162U Anti-trip anti-well-falling screw rod drilling tool |
| 08/07/2013 | CN203113322U Screw rod cast-in-place pile construction device |
| 08/07/2013 | CN103237953A Riser support |
| 08/07/2013 | CN103237727A Tension buoyant tower |
| 08/07/2013 | CN103233688A Safe efficient type high-pressure water cutting connecting sleeve for mining drill bit |
| 08/07/2013 | CN103233687A Automatic drill pipe assembly and disassembly mechanism of trenchless horizontal directional drilling machine |
| 08/07/2013 | CN103233686A Manual pipe bit |
| 08/07/2013 | CN103233685A Interlayer oil pipe of rodless reciprocating oil pumping system |
| 08/07/2013 | CN103233684A Honeycomb drill rod and connection device thereof |
| 08/07/2013 | CN103233172A Ultrahigh-strength and high-toughness steel for pumping rod and production process thereof |
| 08/07/2013 | CN102287143B Oil/sleeve pipe threaded connection joint with air-tight structure |
| 08/07/2013 | CN101769126B Hydraulic middle-drive retractable multi-spindle drilling and stirring device |
| 08/06/2013 | US8499840 Downhole release joint with radially expandable member |
| 08/06/2013 | US8499834 Milling tool for establishing openings in wellbore obstructions |
| 08/06/2013 | CA2677248C Shoulder ring with axial retention means, and methods for installing same |
| 08/06/2013 | CA2658134C Dual string orbital drilling system |
| 08/06/2013 | CA2510212C Method and system to deploy control lines |
| 08/01/2013 | WO2013112296A1 Providing coupler portions along a structure |
| 08/01/2013 | US20130193682 Threaded tubular component and resulting connection |
| 08/01/2013 | US20130192851 Providing coupler portions along a structure |
| 08/01/2013 | US20130192850 System and method for providing power, two-way communication, and operation of downhole tools in a horizontal wellbore |
| 08/01/2013 | US20130192845 Liner drilling using temporarily sealed liner |
| 07/31/2013 | EP2619414A1 Contactless data communications coupling |
| 07/31/2013 | EP2619397A2 Step-to-step wedge thread connections and related methods |
| 07/31/2013 | CN203097861U Six-way device preventing erosion ring empty injection fracture |
| 07/31/2013 | CN203097794U Intelligent hydraulic type wellhead sealer |
| 07/31/2013 | CN203097773U Carbon dioxide flooding sleeve protection tool |
| 07/31/2013 | CN203097753U Waterproof conduit shoe with fast penetrability |
| 07/31/2013 | CN203097752U Water separating guide pipe shoe V-shaped tooth device |
| 07/31/2013 | CN203097751U Waterproof duct pipe shoe |
| 07/31/2013 | CN203097750U Pumping well oil pipe centering device |
| 07/31/2013 | CN203097749U Multi-effect sucker rod centralizing protector |
| 07/31/2013 | CN203097748U Drill rod joint |
| 07/31/2013 | CN203097747U Sucker rod connecting device |
| 07/31/2013 | CN203097746U Rotary drilling rig and square head for drilling rod of rotary drilling rig |
| 07/31/2013 | CN203097745U Long-life petroleum drilling tool |
| 07/31/2013 | CN203097744U Novel screw rod drilling tool transmission shaft assembly |
| 07/31/2013 | CN203097743U Drill rod |
| 07/31/2013 | CN203097742U Drill pipe with S-type inner thickened transitional zone |
| 07/31/2013 | CN203097741U Two-stage internal upset transition zone drill pipe |
| 07/31/2013 | CN203097740U Curved-surface internal-upset intermediate-belt drill pipe |
| 07/31/2013 | CN203097739U Anti-corrosion, anti-scaling and anti-eccentric wear oil tube |
| 07/31/2013 | CN203097738U Large-diameter high-torsion-resistance through drill pipe |
| 07/31/2013 | CN203097718U Powerful reaming drill |
| 07/31/2013 | CN203097716U Combined drill column device for drilling of directional well |
| 07/31/2013 | CN203097712U Concrete bored pile rectangular hole forming device |
| 07/31/2013 | CN203097709U Screw drill drive shaft assembly |
| 07/31/2013 | CN203097708U Anti-fall device for transmission shaft of screw drill |
| 07/31/2013 | CN203097705U Double-drive bidirectional heavy-pipe deep-stirring underground diaphragm wall machine |
| 07/31/2013 | CN103228865A Marine subsea assemblies |
| 07/31/2013 | CN103228859A A down-the-hole hammer |
| 07/31/2013 | CN103225482A Oil casing pipe coupling composite surface layer and treating method |
| 07/31/2013 | CN102155157B Spiral drilling machine for forming concrete piles of different depths and shapes |
| 07/31/2013 | CN101975035B Airtight seal connecting structure of special threaded buckle for oil sleeve pipe |
| 07/31/2013 | CN101942972B Balancer for protecting joint |
| 07/30/2013 | US8496064 System and method for engaging completions in a wellbore |
| 07/25/2013 | WO2013109394A1 Counter device for selectively catching plugs |
| 07/25/2013 | WO2013106890A1 Dual circulation drilling system |
| 07/25/2013 | WO2013106885A1 Improvements to equipment and methods for downhole surveying and data acquisition for a drilling operation |
| 07/25/2013 | WO2013081804A3 Apparatus and methods utilizing progressive cavity motors and pumps with rotors and/or stators with hybrid liners |
| 07/25/2013 | WO2013022733A4 Compositions, methods of coating wellbore tools with such compositions, and wellbore tools coated with such compositions |