| Patents for E21B 17 - Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings (27,800) |
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| 06/12/2013 | EP2601374A2 Clamp |
| 06/12/2013 | CN202991000U Horizontal well top end steam injection device |
| 06/12/2013 | CN202990999U Thermal insulation connecting hoop of pipe column of heat-isolated oil pipe |
| 06/12/2013 | CN202990983U Reciprocating type oil pumping unit |
| 06/12/2013 | CN202990970U Paraffin cleaning and centering anti-drop device for sucker rod |
| 06/12/2013 | CN202990924U Convenient-to-control corer drill rod |
| 06/12/2013 | CN202990907U Easily-disassembled blade drill rod |
| 06/12/2013 | CN202990906U Vortex-induced vibration suppression device with rotatable spiral strakes |
| 06/12/2013 | CN202990905U Corotation type support rod |
| 06/12/2013 | CN202990904U Pulley type sucker rod centralizer |
| 06/12/2013 | CN202990903U Steel tube direct-connection screwing lengthened structure with thread and radial sealing |
| 06/12/2013 | CN202990902U Down-the-hole drill swivel joint |
| 06/12/2013 | CN202990901U Anti-eccentric wear rotatable type oil sucker rod coupling |
| 06/12/2013 | CN202990900U Tube processor locking device for drilling well top drive apparatus |
| 06/12/2013 | CN202990899U Gear wheel drilling machine air inlet apparatus |
| 06/12/2013 | CN202990898U Easily-disassembled water swivel for drilling machine |
| 06/12/2013 | CN202990897U Ring-shaped drill rod capable of automatically cutting off geographical core column blocks |
| 06/12/2013 | CN202990896U Vibration-while-drilling drill rod |
| 06/12/2013 | CN202990895U Oil pipe with dissolution coating modification high polymer materials for entire corrosion resistance |
| 06/12/2013 | CN202990894U Oil pipe with dissolution coating modification high polymer materials for inner corrosion resistance |
| 06/12/2013 | CN202990893U Connector for electric heating hollow oil pumping smooth rod |
| 06/12/2013 | CN202990892U Oil and gas field exploitation steel tube straight-connection screw joint lengthening structure |
| 06/12/2013 | CN202990891U Triple-seal steel tube direct screw connection lengthening structure |
| 06/12/2013 | CN202990890U Steel tube direct-connection screwing lengthened structure with thread and end face sealing |
| 06/12/2013 | CN202990889U Coating vacuum heat-insulating oil pipe |
| 06/12/2013 | CN202990888U Driving drill rod assembly of rotary drilling machine |
| 06/12/2013 | CN202990887U Anti-corrosion, anti-scale and wear resistant sucker rod |
| 06/12/2013 | CN202990883U Drill and drilling device |
| 06/12/2013 | CN202990848U Drilling-rod-free geological drilling device |
| 06/12/2013 | CN202989282U Anti-corrosion casing pipe |
| 06/12/2013 | CN103154424A Marine subsea free-standing riser systems and methods |
| 06/12/2013 | CN103154420A Step-to-step wedge thread connections and related methods |
| 06/12/2013 | CN103147716A Partial cementing method for coal bed gas ground well in mining area |
| 06/12/2013 | CN103147708A Through type down hole hammer reverse circulation drilling dust collection device |
| 06/12/2013 | CN103147697A Wellhead corrector for surface casing |
| 06/12/2013 | CN103147696A Drill stem protector for absorbing drill stem impact shock |
| 06/12/2013 | CN103147009A N80Q steel-grade oil casing and manufacture method thereof |
| 06/12/2013 | CN103143669A External upsetting method for oil well pipe and oil well pipe manufactured by using external upsetting method |
| 06/12/2013 | CN102162338B Automatic pin-ejection inner core drill rod for rotary drilling machine |
| 06/12/2013 | CN101680277B Stroker tool |
| 06/12/2013 | CN101680274B Rock-drilling equipment as well as female and male parts therefor |
| 06/12/2013 | CN101644143B A thread joint for a drill string for percussive rock-drilling |
| 06/11/2013 | US8459361 Multipart sliding joint for floating rig |
| 06/11/2013 | US8459348 Downhole line tool assembly and method for use thereof |
| 06/11/2013 | CA2634557C Sucker rod |
| 06/06/2013 | WO2013082134A1 Low-friction oilfield equipment |
| 06/06/2013 | WO2013081804A2 Apparatus and methods utilizing progressive cavity motors and pumps with rotors and/or stators with hybrid liners |
| 06/06/2013 | WO2013079857A1 Multiple flexible seafloor-surface linking apparatus comprising at least two levels |
| 06/06/2013 | WO2013028517A4 Universal pipe thread protector |
| 06/06/2013 | US20130140345 Method of manufacturing continuous sucker rod |
| 06/06/2013 | US20130140087 Dual pipe rod assembly section, horizontal drilling device and probe housing |
| 06/06/2013 | US20130140029 Torque limiting device |
| 06/06/2013 | CA2856921A1 An adaptive method for high data rate communication in wells |
| 06/05/2013 | EP2598709A2 Installation of tubular strings with lines secured thereto in subterranean wells |
| 06/05/2013 | CN202970706U Novel drivepipe coupling positioner used for coiled tubing |
| 06/05/2013 | CN202970697U Structure for mounting centralizer by using base tube and salvage cap |
| 06/05/2013 | CN202970668U Casing pressure balance slide sleeve staged fracturing tool |
| 06/05/2013 | CN202970640U Reservoir protection tubular pillar of pressure self-adaptive anchoring packer |
| 06/05/2013 | CN202970564U Self-restoring locking component and drill rod elastic positioning device |
| 06/05/2013 | CN202970550U Rotational-flow sand washing and deblocking pipe column for horizontal well |
| 06/05/2013 | CN202970530U Well drilling borehole dredging device |
| 06/05/2013 | CN202970529U Three-head spiral drill stem |
| 06/05/2013 | CN202970528U Rotating drill rod component and dill string with the same |
| 06/05/2013 | CN202970527U Hydraulic powerful sleeve centralizer |
| 06/05/2013 | CN202970526U 多功能对扣器 Multifunction buckle device |
| 06/05/2013 | CN202970525U Screw drill centralizer structure |
| 06/05/2013 | CN202970524U Wear-resistant sucker rod |
| 06/05/2013 | CN202970523U Whole-course casing joint of gas extraction borehole |
| 06/05/2013 | CN202970522U Screw pump oil extraction polished rod anti-dropping device |
| 06/05/2013 | CN202970521U Dual-function combined joint with right-hand threads and left-hand threads |
| 06/05/2013 | CN202970520U Down-hole docking assembly |
| 06/05/2013 | CN202970519U Lined pipe sealing short joint |
| 06/05/2013 | CN202970518U Rotary sealing type drilling-reaming switching device |
| 06/05/2013 | CN202970517U Drill pipe of rotary drilling rig |
| 06/05/2013 | CN202970516U Rotary drilling rig drill stem and rotary drilling rig |
| 06/05/2013 | CN202970515U Water detection pipe column used in oil-gas field development |
| 06/05/2013 | CN202970514U High-pressure seal arc three-edge drill rod |
| 06/05/2013 | CN202970513U Positioning and orientation technique pipe for main and branch well bore connection position of multilateral well |
| 06/05/2013 | CN202970512U Corrosion resisting oil pumping unit polish rod suitable for oilfield ternary compound driving well |
| 06/05/2013 | CN202970460U Wheeled drilling machine |
| 06/05/2013 | CN1904307B Improved structure of spiral anger and profiled semi screw pole body |
| 06/05/2013 | CN103140645A Tubular threaded connection |
| 06/05/2013 | CN103132927A Slide actuating tubular connector |
| 06/05/2013 | CN103132926A Hollow universal joint for rotary steerable drilling |
| 06/05/2013 | CN103132925A Downhole motive driller capable of improving drill column stretching capacity |
| 06/05/2013 | CN103132924A Petroleum drilling tool for surface hardening |
| 06/05/2013 | CN103132907A Cone down-the-hole mixing drilling tool and cone down-the-hole drill including the same |
| 06/05/2013 | CN103132904A Anchor rod assisting drilling machine |
| 06/05/2013 | CN103131947A High-performance low-carbon microalloy steel SEW (hot stretch-reducing electric welding) expansion casing and manufacturing method thereof |
| 06/05/2013 | CN103131897A 110ksi-level titanium alloy oil well pipe and production method thereof |
| 06/05/2013 | CN102251751B Novel full-automatic pneumatic chuck for mouse hole |
| 06/05/2013 | CN102031937B Maintenance-free anti-looseness insulating pup joint |
| 06/05/2013 | CN101845944B Method for sealing gas drainage boreholes at specified positions |
| 06/05/2013 | CN101718175B Universal joint device for ocean deepwater drilling |
| 06/04/2013 | US8457929 Oilfield equipment identification method and apparatus |
| 06/04/2013 | US8454262 Shelf clip |
| 06/04/2013 | US8453728 Apparatus and method for depth referencing downhole tubular strings |
| 06/04/2013 | CA2510632C Connection apparatus and method |
| 06/02/2013 | CA2769049A1 Rod guide and solids control assembly |
| 05/30/2013 | WO2013076621A1 Longitudinal absorber for downhole tool chassis |