| Patents for E21B 17 - Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings (27,800) |
|---|
| 01/18/2012 | CN202117573U Spiral heavy weight drill pipe |
| 01/18/2012 | CN202117572U Drill string equipped with downhole blowout preventer |
| 01/18/2012 | CN202117570U Plug-in type high-pressure cutting drill bit |
| 01/18/2012 | CN202117567U Self-cleaning reaming device while drilling |
| 01/18/2012 | CN202117563U Drilled pile drilling rectifying and guiding device and pile drill stem with same |
| 01/18/2012 | CN202117556U Auger driller for moulding concrete piles with different depth and shapes |
| 01/18/2012 | CN102322258A Drill-following acoustic logging method and device capable of reducing and insulating sound on drill collar |
| 01/18/2012 | CN102322230A Centering device |
| 01/18/2012 | CN102322229A Righting mechanism, drilling rod structure and engineering machine using same |
| 01/18/2012 | CN102322228A Centralizer and drill rod and engineering machine applying same |
| 01/18/2012 | CN102322227A 8 tracks per inch (8TPI) thread tooth shape structure |
| 01/18/2012 | CN102322226A Self-locking and unlocking device for sampling pipe joints of hollow stems for soft formations |
| 01/18/2012 | CN102322225A Drilling tool for drilling and sampling complex stratum |
| 01/18/2012 | CN102322224A Mechanical drill rod |
| 01/18/2012 | CN102322223A Geothermal heat superconducting heat-transferring wax eliminating and preventing sucker rod |
| 01/18/2012 | CN102322222A Novel automatic pin-releasing cored drill stem for rotary drilling rigs |
| 01/18/2012 | CN102322058A Construction process and equipment for downhole impacting high-pressure jet grouting pile |
| 01/18/2012 | CN102322056A Super-large-torque spiral hole-boring and pile-pouring machine |
| 01/18/2012 | CN101377120B Sea underwater hydraulic connector |
| 01/17/2012 | US8096352 Centralizer for tubular elements |
| 01/17/2012 | CA2720227C Casing stabbing guide |
| 01/17/2012 | CA2563580C Expandable tubular connection |
| 01/17/2012 | CA2547027C Production by plastic expansion of a sealed tubular joint with inclined abutting surface(s) |
| 01/14/2012 | CA2744583A1 Apparatuses and methods for rolling angled threads |
| 01/12/2012 | WO2012006455A2 Torque enhanced threaded connection |
| 01/12/2012 | WO2012005979A2 Wellbore centralizer for tubulars |
| 01/12/2012 | WO2012004000A2 Downhole inductive coupler assemblies |
| 01/12/2012 | WO2012003999A2 Inductive couplers for use in a downhole environment |
| 01/12/2012 | WO2012003645A1 Tubular thread connector for oil and gas industries |
| 01/12/2012 | WO2011146826A3 Improved subsea riser system |
| 01/12/2012 | WO2011069847A3 Design method for subsea equipment subject to hydrogen induced stress cracking |
| 01/12/2012 | US20120006566 Fiber support arrangement and method |
| 01/12/2012 | US20120006533 Wellbore Centralizer for Tubulars |
| 01/12/2012 | CA2804503A1 Torque enhanced threaded connection |
| 01/11/2012 | EP2404025A1 System and method for connecting wired drill pipe |
| 01/11/2012 | EP2019901B1 Reaming tool suitable for running on casing or liner and method of reaming |
| 01/11/2012 | EP1948900B1 Earth drilling device |
| 01/11/2012 | CN202108893U Universal shaft housing of split screw drill |
| 01/11/2012 | CN202108491U Gas well separate stratum fracturing and separate stratum testing integrated process pipe column |
| 01/11/2012 | CN202108486U Two-stage three-section inserting, sealing and dispersing tubular column capable of backwashing well |
| 01/11/2012 | CN202108477U Plunger water pumping gas production well mouth buffer |
| 01/11/2012 | CN202108431U Pile-forming drilling tool for screw squeezed cast-in-place pile |
| 01/11/2012 | CN202108430U Well-cementing high-pressure line fixing and protecting device |
| 01/11/2012 | CN202108429U Automatic oil tube centralizer |
| 01/11/2012 | CN202108428U Roller centralizer |
| 01/11/2012 | CN202108427U Hermetic seal sleeve pipe screwed joint with pipe external diameter 200.03mm |
| 01/11/2012 | CN202108426U Large-size high-steel-grade drill pipe for directional traversing |
| 01/11/2012 | CN202108425U Guide shoe quickly-mounting adapter |
| 01/11/2012 | CN202108424U Perforating, fracturing and draining integrated tubular column for oil well |
| 01/11/2012 | CN202108423U Oil tube with anti-wear and anti-corrosion lining and special specification |
| 01/11/2012 | CN202108422U Lengthening bar and long-spiral drilling machine using same |
| 01/11/2012 | CN202108413U Crushing mechanism |
| 01/11/2012 | CN102317149A Free standing steel catenary risers |
| 01/11/2012 | CN102312657A High-temperature-resistant and wear-resistant hollow rod centering guide |
| 01/11/2012 | CN102312656A Anticorrosion pipe provided with alloy layers |
| 01/11/2012 | CN102312427A Half soil squeezing screw expansion pile forming method |
| 01/11/2012 | CN101666215B Sleeve pipe tieback device |
| 01/11/2012 | CN101581196B Impacting helicoid hydraulic motor and transmission shaft assembly |
| 01/11/2012 | CN101305156B Earth auger |
| 01/10/2012 | US8091935 Internal release connector and method |
| 01/10/2012 | US8091775 Process and assembly for identifying and tracking assets |
| 01/10/2012 | US8091631 Intelligent well system and method |
| 01/10/2012 | US8091627 Stress relief in a pocket of a downhole tool string component |
| 01/10/2012 | CA2723012C Apparatus and method for drilling a wellbore with casing and cementing the casing in the wellbore |
| 01/10/2012 | CA2663894C Centralizing device for an elongated body in a mouse hole machine |
| 01/10/2012 | CA2626744C Drill rod, drill bit, and drilling tool |
| 01/10/2012 | CA2498385C Drill rod and method in order to manufacture the same |
| 01/10/2012 | CA2445586C Improved composite tubing |
| 01/10/2012 | CA2408110C Wedge thread with torque shoulder |
| 01/05/2012 | WO2012003084A2 Installation system with force generating tool |
| 01/05/2012 | WO2012003016A1 Integral wear pad and method |
| 01/05/2012 | WO2012002936A1 Apparatus for directional drilling |
| 01/05/2012 | WO2012002876A1 Driver for torque and rotation transfer from a rotational chuck to a drill steel |
| 01/05/2012 | WO2012001393A1 Rocking collar and umbilical termination assembly |
| 01/05/2012 | WO2011127155A4 Tubular connection system faciitating nonrotating signal conductor connection and method |
| 01/05/2012 | CA2811482A1 Integral wear pad and method |
| 01/05/2012 | CA2803297A1 Driver for torque and rotation transfer from a rotational chuck to a drill steel |
| 01/04/2012 | EP2402549A1 Downhole apparatus and method |
| 01/04/2012 | EP2402548A1 Downhole apparatus and method |
| 01/04/2012 | EP2402547A1 Downhole apparatus and method |
| 01/04/2012 | EP2401469A2 Threadless drillpipe connector |
| 01/04/2012 | EP2401468A1 Bottom-surface connecting installation of the multi-riser hybrid tower type, comprising sliding buoyancy modules |
| 01/04/2012 | EP2201212B1 Apparatus and method for ratcheting stimulation tool |
| 01/04/2012 | CN202100243U Underwater manifold production pipeline |
| 01/04/2012 | CN202100221U Hanging disconnecting device for fracturing pipe column of continuous oil pipe |
| 01/04/2012 | CN202100212U Twill double-coupling blade type vortex-induced vibration abatement device for ocean stand pipe |
| 01/04/2012 | CN202100211U Polished rod shock absorber |
| 01/04/2012 | CN202100210U Drilling rig and vibration damper thereof |
| 01/04/2012 | CN202100209U Drill stem conversion connector |
| 01/04/2012 | CN202100208U Underground work pipe column tripping device |
| 01/04/2012 | CN202100207U Non-magnetic titanium alloy drill rod |
| 01/04/2012 | CN102308058A Expandable casing with enhanced collapse resistance and sealing capabilit |
| 01/04/2012 | CN102308057A Offset Stochastic control |
| 01/04/2012 | CN102305034A Drilling tool for shallow-layer soil texture |
| 01/04/2012 | CN102305033A Drilling bucket for rotary drilling rig |
| 01/04/2012 | CN102305032A Ball-shaped elastic centralizer |
| 01/04/2012 | CN102305031A Variable-interval injection molding sucker-rod string |
| 01/04/2012 | CN102305030A Drill rod for engineering driller |
| 01/04/2012 | CN102305029A Insulating pup joint used for underground mine drilling and manufacture method thereof |
| 01/04/2012 | CN102305028A High-tightness high pressure-resistant double-guide faucet |