| Patents for E21B 17 - Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings (27,800) |
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| 01/15/2014 | CN203394364U Hydraulic propeller for well drilling |
| 01/15/2014 | CN203394363U Trenchless horizontal directional drilling electric drill rod |
| 01/15/2014 | CN203394362U Cased hole completion multi-section pressing crack horizontal well mechanical water finding pipe column |
| 01/15/2014 | CN203394342U Soil perforating machine |
| 01/15/2014 | CN103512819A Eccentric wear prevention test system for coupling |
| 01/15/2014 | CN103510901A Tubular core-taking-out structure for drilling tool |
| 01/15/2014 | CN103510884A Drill pipe bar material |
| 01/15/2014 | CN103510883A Push-and-pull device for drill collar |
| 01/15/2014 | CN103510882A Pumping rod centralizer |
| 01/15/2014 | CN103510881A Pumping rod centralizer |
| 01/15/2014 | CN103510880A Structure for connecting wearing ring and joint in drill machine |
| 01/15/2014 | CN103510879A Screw pump hydraulic centering device |
| 01/15/2014 | CN103510878A Connector |
| 01/15/2014 | CN103510877A Inner pipe joint on drill rod |
| 01/15/2014 | CN103510876A Structure for connecting inner pipe of drill rod and pup joint of drill rod |
| 01/15/2014 | CN103510875A Connecting pipe structure for drilling tool |
| 01/15/2014 | CN103510874A Protection connector of drill rod |
| 01/15/2014 | CN103510873A Connector for prolonging service life of diamond composite drill bit |
| 01/15/2014 | CN103510872A Controllable bent joint guiding mechanism |
| 01/15/2014 | CN103510871A Complex structural well drag-reduction wrenching-reduction compound drilling method |
| 01/15/2014 | CN103510870A Drilling tool joint device and technique capable of achieving continuous circulation of gas drilling |
| 01/15/2014 | CN103510869A Drill rod connector of drill machine |
| 01/15/2014 | CN103510868A Drill rod and drill rig device |
| 01/15/2014 | CN103510867A Triangular drill rod |
| 01/15/2014 | CN103510866A Roller-bit drill rig with double air outlet channels |
| 01/15/2014 | CN103510865A Ball-cage-type universal shaft of screw drill |
| 01/15/2014 | CN103510850A Piling drilling rig |
| 01/15/2014 | CN103510848A Roller cone drilling machine with high-intensity drill rod |
| 01/15/2014 | CN102536130B Rotation type joint device for drilling machine |
| 01/15/2014 | CN102168534B Special mining suction drill for coal mine |
| 01/15/2014 | CN101492999B Used of downhole fluid static pressure bearing |
| 01/14/2014 | US8630817 Self centering bore measurement unit |
| 01/14/2014 | US8627894 Ring member for a swellable downhole packer |
| 01/14/2014 | US8627887 In situ recovery from a hydrocarbon containing formation |
| 01/14/2014 | CA2727745C An improved seal between pipes |
| 01/14/2014 | CA2724571C Pressure orienting swivel |
| 01/09/2014 | WO2014008325A1 Bentonite collars for wellbore casings |
| 01/09/2014 | WO2014006466A2 Orientable downhole drilling assembly and method of using same |
| 01/09/2014 | WO2014005420A1 Combined string for straddle test and bit perforation |
| 01/09/2014 | WO2013079915A3 Buoyancy compensating element and method |
| 01/09/2014 | WO2013079914A3 Buoyancy compensating element and method |
| 01/09/2014 | US20140008130 Wellbore Casing Section with Moveable Portion for Providing a Casing Exit |
| 01/09/2014 | US20140008079 Valve arrangement for a production pipe |
| 01/09/2014 | US20140008078 Slip joint for downhole tubing |
| 01/09/2014 | US20140008076 Riser |
| 01/09/2014 | US20140008057 High frequency surface treatment methods and apparatus to extend downhole tool survivability |
| 01/09/2014 | US20140008056 Tubing centralizer |
| 01/09/2014 | US20140008052 Resettable Selective Locking Device |
| 01/09/2014 | CA2782957A1 Slip joint for downhole tubing |
| 01/08/2014 | EP2682563A2 Error resilient sensor system for determining a spatial relationship between installation components under harsh environmental conditions |
| 01/08/2014 | EP2681405A2 Disconnect assembly for cylindrical members |
| 01/08/2014 | EP2681404A1 Expansion cone assembly for setting a liner hanger in a wellbore casing |
| 01/08/2014 | EP2681403A1 Drill stem component comprising a movable coupler and a pressure chamber |
| 01/08/2014 | EP2681402A1 Annular coupler for drill stem component |
| 01/08/2014 | EP2681401A2 Tubular component for drill stem capable of being cabled, and method for mounting a cable in said component |
| 01/08/2014 | CN203383750U Novel long spiral soil squeezing drill rod |
| 01/08/2014 | CN203383749U Integral spiral groove directional drill stem |
| 01/08/2014 | CN203383748U Special connector for patching buttress oil casing |
| 01/08/2014 | CN203383747U Patching buttress special petroleum casing |
| 01/08/2014 | CN203383746U Damping and accelerating tool for well drilling |
| 01/08/2014 | CN203383745U One-way liquid inlet ball valve switch and horizontal well sectional release plugged water mining pipe column |
| 01/08/2014 | CN203383744U One-way check drill rod for coal mine |
| 01/08/2014 | CN203383743U One-way non-return drill rod for coal mine |
| 01/08/2014 | CN203383742U Tubular column momentum balance device |
| 01/08/2014 | CN203383727U Screw drill tool with long service life and high performance |
| 01/08/2014 | CN203383723U Spiral drilling machine for continuous forming of concrete piles |
| 01/08/2014 | CN203383209U Six-shaft cement mixing pile machine |
| 01/08/2014 | CN203383208U Six-shaft cement-soil mixing pile machine with novel power system |
| 01/08/2014 | CN203383207U Multi-shaft cement-soil mixing pile machine with novel power system |
| 01/08/2014 | CN203383206U Multi-shaft cement stirring pile machine |
| 01/08/2014 | CN103502561A Downhole casing system |
| 01/08/2014 | CN103502560A Apparatus and method for damping vibration in a drill string |
| 01/08/2014 | CN103502559A A tool string |
| 01/08/2014 | CN103502558A Coupling for connecting tubular elements for bottom-hole assemblies |
| 01/08/2014 | CN103502555A Resonance enhanced rotary drilling module |
| 01/08/2014 | CN103498637A Length-adjustable rotary drill rig |
| 01/08/2014 | CN102561955B Thread protector for drilling rig |
| 01/08/2014 | CN102308058B Expandable casing with enhanced collapse resistance and sealing capabilit |
| 01/07/2014 | US8622153 Downhole assembly |
| 01/07/2014 | US8622126 Reaming tool |
| 01/07/2014 | US8622122 Rod reel and method of repairing a rod string |
| 01/07/2014 | CA2685788C Method and apparatus to position and protect control lines being coupled to a pipe string on a rig |
| 01/03/2014 | WO2014004125A1 Device having a hard seat support |
| 01/03/2014 | WO2014003715A1 Fluid flow control using channels |
| 01/03/2014 | WO2014003576A2 Drill string mountable wellbore cleanup apparatus and method |
| 01/03/2014 | WO2014001601A1 Method and apparatus for use of a drilling device meant for down-the-hole drilling |
| 01/03/2014 | WO2014001249A1 Monitoring apparatus and method |
| 01/03/2014 | WO2014000816A1 Flexible pipe carcass for controlling flow induced vibration in a riser |
| 01/03/2014 | WO2014000760A1 Arrangement for venting a riser annulus |
| 01/03/2014 | WO2013104470A3 A drill bit for a percussive hammer, and shank therefore |
| 01/03/2014 | WO2013050978A3 Tubular apparatus for the continuous completion of hydrocarbon wells, and corresponding laying method |
| 01/03/2014 | WO2012176174A3 Tool and method for locking and releasing a plug |
| 01/03/2014 | CA2877398A1 Flexible pipe carcass for controlling flow induced vibration in a riser |
| 01/03/2014 | CA2874984A1 Fluid flow control using channels |
| 01/02/2014 | US20140000914 High Pressure Multibore Junction Assembly |
| 01/02/2014 | US20140000910 Apparatus with rigid support and related methods |
| 01/02/2014 | US20140000873 Sacrificial liner linkages for auto-shortening an injection pipe for underground coal gasification |
| 01/01/2014 | EP2678517A2 Inground drill string housing and methods for signal coupling |
| 01/01/2014 | EP2678516A2 Drill string adapter and method for inground signal coupling |
| 01/01/2014 | EP2678515A1 Electromagnetic coupler |