| Patents for E21B 17 - Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings (27,800) |
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| 11/24/2010 | EP2252762A1 Monitoring system for pipelines or risers in floating production installations |
| 11/24/2010 | EP2032794B1 Top filling tubing |
| 11/24/2010 | CN201650730U Double equal-wall-thickness screw |
| 11/24/2010 | CN201650166U Horizontal directional traversing guiding device |
| 11/24/2010 | CN201650157U Oil pumping polish rod clip |
| 11/24/2010 | CN201650154U Adjustable multi-stage helical extruding type drilling tool |
| 11/24/2010 | CN201650153U Spiral drill pipe with T-shaped blade |
| 11/24/2010 | CN201650152U Ground protection device for screw pump polished rod |
| 11/24/2010 | CN201650151U Sucker rod centralizer |
| 11/24/2010 | CN201650150U Novel elastically-supported wear-resistant and wear-reducing pair |
| 11/24/2010 | CN201650149U VTC split-wing type centralizer |
| 11/24/2010 | CN201650148U Integral casing centralizer |
| 11/24/2010 | CN201650147U Hydraulic casing centralizer |
| 11/24/2010 | CN201650146U Drill rod joint structure improvement |
| 11/24/2010 | CN201650145U Integral pipeline clamp |
| 11/24/2010 | CN201650144U Threaded connector for tubing and casing |
| 11/24/2010 | CN201650143U Threaded connector for oil pipes and casing pipes |
| 11/24/2010 | CN201650142U Drum type roller type transmission universal drive shaft for screw drilling tool |
| 11/24/2010 | CN201650141U Glide driving drill rod for piling drilling machine |
| 11/24/2010 | CN201650140U Active drill rod |
| 11/24/2010 | CN201650139U Thermal production anticorrosive watering hollow pipe |
| 11/24/2010 | CN201650138U Water detecting drill rod |
| 11/24/2010 | CN201650137U Ultrahigh-strength corrosion-resistant oil pumping rod |
| 11/24/2010 | CN201650102U Drilling mechanism of compound rotary drilling rig |
| 11/24/2010 | CN201649085U Riser piling operating device for offshore drilling |
| 11/24/2010 | CN1837571B Telescopic drill rod and telescopic long spiral drilling device |
| 11/24/2010 | CN101896685A Installing an expandable tubular in a subsea wellbore |
| 11/24/2010 | CN101896684A Modular connector and method |
| 11/24/2010 | CN101893603A Thread detection device and crack detection method for drilling tool |
| 11/24/2010 | CN101892813A Drill collar capable of reducing stick slip phenomena |
| 11/24/2010 | CN101892422A Steel for petroleum casing pipe, high-frequency electric resistance welding petroleum casing pipe and methods for manufacturing steel for petroleum casing pipe and high-frequency electric resistance welding petroleum casing pipe |
| 11/24/2010 | CN101158273B Slip-type casing tube break prevention compensation pipe |
| 11/23/2010 | US7836958 Disconnect apparatus and method |
| 11/23/2010 | CA2601553C Hi-dielectric debris seal for pothead interface |
| 11/23/2010 | CA2486177C Tubular goods and liners |
| 11/23/2010 | CA2444811C Downhole torque-generating and generator combination apparatus |
| 11/18/2010 | WO2010132096A1 Apparatus and methods for applying torque to a sucker rod connection |
| 11/18/2010 | WO2010130344A1 Set for producing a threaded connection for drilling and operating hydrocarbon wells, and resulting threaded connection |
| 11/18/2010 | WO2010110952A3 Dc powered subsea inverter |
| 11/18/2010 | WO2010069992A4 Riser valve |
| 11/18/2010 | WO2007093771A8 Downhole assembly and cutter assembly |
| 11/18/2010 | US20100288505 Drilling riser elastic swivel for boundary layer control |
| 11/18/2010 | CA2760752A1 Set for producing a threaded connection for drilling and operating hydrocarbon wells, and resulting threaded connection |
| 11/17/2010 | EP2250419A1 Two-element tandem flexible joint |
| 11/17/2010 | CN201635686U Drill core pipe |
| 11/17/2010 | CN201635676U Drilling tool friction reduction device |
| 11/17/2010 | CN201635675U Auto-strengthening torsion transmitter |
| 11/17/2010 | CN201635674U Roller stabilizer for gas drilling |
| 11/17/2010 | CN201635673U Pumping unit polished rod rotation shock absorber |
| 11/17/2010 | CN201635672U Special hoop for anti-wear sheath of sleeve |
| 11/17/2010 | CN201635671U Passive flow control device capable of suppressing vortex-induced vibration of long and thin flexible riser |
| 11/17/2010 | CN201635670U Synchronous straight-edge variable-diameter centralizer |
| 11/17/2010 | CN201635669U Sleeve butt-buckling device |
| 11/17/2010 | CN201635668U Drill rod with locating pin |
| 11/17/2010 | CN201635667U High anti-torque trilateral kelly |
| 11/17/2010 | CN201635666U High-pressure water sealing drill pipe |
| 11/17/2010 | CN201635665U Double-phase steel lagging sand three-way valve |
| 11/17/2010 | CN101886526A Sliding pin type drilling rig and drill stem |
| 11/17/2010 | CN101886218A Steel making method of J55-grade 37Mn5 oil casing pipe |
| 11/11/2010 | WO2010129408A2 Subsea overload release system and method |
| 11/11/2010 | WO2010129236A2 Riser buoyancy adjustable thrust column |
| 11/11/2010 | WO2010129198A2 Quick connect tool |
| 11/11/2010 | WO2010129191A1 Aluminum auxiliary lines for drilling riser |
| 11/11/2010 | WO2010128861A1 Guiding device for rock drilling machine |
| 11/11/2010 | WO2010128351A1 A holding device insertable into the central bore of a tubular drill string component, and corresponding tubular drill string component |
| 11/11/2010 | WO2010106312A3 Improved downhole device |
| 11/11/2010 | WO2010082051A3 Tubing shoe |
| 11/11/2010 | WO2010057221A3 Subsea drilling with casing |
| 11/11/2010 | WO2009136287A8 Aluminum riser assembly |
| 11/11/2010 | US20100284750 Removable impact cover for a marine riser buoyancy module |
| 11/11/2010 | US20100282477 Sleeve for expandable tubular threaded connection |
| 11/11/2010 | CA2761072A1 Subsea overload release system and method |
| 11/11/2010 | CA2760739A1 A holding device insertable into the central bore of a tubular drill string component, and corresponding tubular drill string component |
| 11/10/2010 | EP2247817A1 Underwater connection installation |
| 11/10/2010 | EP1501644B1 Protective sleeve for threaded connections for expandable liner hanger |
| 11/10/2010 | CN201627544U Arc-shaped API round threaded sleeve joint |
| 11/10/2010 | CN201627543U Quick joint of tie rod |
| 11/10/2010 | CN201627542U Split mine triangular drill rod |
| 11/10/2010 | CN201627541U Underground drill string vibration reducing and pressurizing device |
| 11/10/2010 | CN201627533U Novel transmission shaft assembly suitable for screw drill |
| 11/10/2010 | CN1657744B Apparatus and method for acquiring information while drilling |
| 11/10/2010 | CN101881160A Fixed point sampler |
| 11/10/2010 | CN101881140A High-performance tool joint for transmitting electric power and relevant signals |
| 11/10/2010 | CN101881139A Thread connector of petroleum gas industrial tube |
| 11/10/2010 | CN101027454B Composite pipe having at least one metal end piece and method of manufacturing such a pipe |
| 11/09/2010 | CA2615757C Reinforced open-hole zonal isolation packer |
| 11/09/2010 | CA2473073C Vessel for well intervention |
| 11/09/2010 | CA2430793C Junction isolation apparatus and methods for use in multilateral well treatment operations |
| 11/04/2010 | WO2010127128A2 A low friction centralizer |
| 11/04/2010 | WO2010126971A2 Systems and methods for reducing vortex induced vibrations |
| 11/04/2010 | WO2010126874A2 Systems and methods for installing structures in a body of water |
| 11/04/2010 | WO2010125031A1 Pressure joint |
| 11/04/2010 | US20100278611 Apparatus to mechanically load a compression member |
| 11/04/2010 | US20100276158 Downhole multiple bore rotary diverter apparatus |
| 11/04/2010 | US20100276138 Low Friction Centralizer |
| 11/04/2010 | DE10327732B4 Bohrgestänge mit Positionsstift Drill pipe with positioning pin |
| 11/04/2010 | CA2760670A1 A low friction centralizer |
| 11/03/2010 | EP2246520A1 Kelly bar assembly |
| 11/03/2010 | EP2246519A1 Downhole hydraulic control system |
| 11/03/2010 | EP2245258A2 Improved tubing section |