| Patents for E21B 17 - Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings (27,800) |
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| 12/16/2009 | EP2132402A1 Downhole tool |
| 12/16/2009 | EP2132399A1 System, method, and apparatus for passive and active updrill features on roller cone drill bits |
| 12/16/2009 | CN201363123Y Oil extracting device of directional well screw pumps |
| 12/16/2009 | CN201363115Y Repair device for worn internal drill pipe on deep-hole ejector drill |
| 12/16/2009 | CN201363103Y Compound anti-wear torque-reducing tool |
| 12/16/2009 | CN201363102Y Drill rod centering device |
| 12/16/2009 | CN201363101Y Reverse disconnecting device of sucker rods |
| 12/16/2009 | CN201363100Y Anti-clogging pup joint for drill rod |
| 12/16/2009 | CN201363099Y Universal conductor of sucker rods |
| 12/16/2009 | CN201363098Y Special rod pipe for inner petroleum protection |
| 12/16/2009 | CN201363097Y Double-drill rod transmission device and double-rod anti-outburst drill |
| 12/16/2009 | CN201363096Y Drilling tool for coal pit fire extinguishing |
| 12/16/2009 | CN201363095Y Coupling preset type upset forging anti-dropping solid sucker rod |
| 12/16/2009 | CN201363094Y Pipe nipple with filling and temperature-pressure measurement connection pipes |
| 12/16/2009 | CN101603420A Method and device for telemetering torque moment of drill stem |
| 12/16/2009 | CN101603412A Rapid-replacement joint of long screw drill rod |
| 12/16/2009 | CN100569612C Spiral sheet winding machine |
| 12/15/2009 | CA2581889C Helical groove for a tubular connection |
| 12/15/2009 | CA2567890C Erosion resistant aperture for a downhole valve or ported flow control tool |
| 12/15/2009 | CA2501736C Continuous wellbore drilling system with stationary sensor measurements |
| 12/15/2009 | CA2475634C Sealing tubing |
| 12/15/2009 | CA2405533C Flexible hose with thrusters for horizontal well drilling |
| 12/15/2009 | CA2401668C Power generation using batteries with reconfigurable discharge |
| 12/15/2009 | CA2399132C Combined logging and drilling system |
| 12/15/2009 | CA2385596C Lubricant coating for expandable tubular members |
| 12/15/2009 | CA2343650C Torsional shock absorber for a drill string |
| 12/10/2009 | WO2009148921A1 Mechanism for providing controllable angular orientation while transmitting torsional load |
| 12/10/2009 | WO2009148323A1 Rock drilling machine |
| 12/10/2009 | WO2009148320A1 Method for connecting a conductor casing and wellhead in a subsea well and wellhead therefor |
| 12/10/2009 | WO2009146475A1 Pipe connection |
| 12/10/2009 | US20090304454 Workover Riser Compensator System |
| 12/10/2009 | US20090301785 Integrated Spiral Blade Collar |
| 12/10/2009 | US20090301711 Mechanically Engaged and Releasable Connection System |
| 12/10/2009 | US20090301710 Fixed Swirl Inducing Blast Liner |
| 12/10/2009 | US20090301709 Flexible Sinker Bar With Electrically Conductive Wires |
| 12/10/2009 | US20090301705 Universal Pump Holddown System |
| 12/10/2009 | CA2723962A1 Pipe connection |
| 12/09/2009 | EP2130758A2 Hybrid riser tower and methods of installing same |
| 12/09/2009 | EP2129861A1 An apparatus for venting an annular space between a liner and a pipeline of a subsea riser |
| 12/09/2009 | EP2129858A1 Drilling tool with feed control |
| 12/09/2009 | CN201358785Y Connecting sleeve for steel drill rod |
| 12/09/2009 | CN201358760Y Oil and gas production pipe |
| 12/09/2009 | CN201358738Y Emergency communication, commanding and deployment system used in precise locating and accident rescue of coalmine workers |
| 12/09/2009 | CN201358737Y Anti-eccentric wear centralizer of self-correcting multifunctional inner pass sucker rod |
| 12/09/2009 | CN201358736Y Antiscale wax-removal eccentricity-correction oil drainer |
| 12/09/2009 | CN201358735Y Electricity conducting V-shaped seat |
| 12/09/2009 | CN201358734Y Anticorrosive protecting device of oil pipes |
| 12/09/2009 | CN201358733Y Aligning anti-release and eccentric-wear resistant device for sucker rods |
| 12/09/2009 | CN201358732Y Low stress and high anti-torque double-ended threaded drill stem joint |
| 12/09/2009 | CN201358731Y Elongated anti-torque double-shouldered drill rod sub |
| 12/09/2009 | CN201358730Y Oil pipe pressure test rotary joint |
| 12/09/2009 | CN201358729Y Non-channeling plugging water technique pipe column of oil well |
| 12/09/2009 | CN201358728Y Multifunctional anti-pollution pipe column |
| 12/09/2009 | CN201358727Y Power transmission mechanism of subsurface equipment |
| 12/09/2009 | CN201358726Y Electroplated pumping rod electrode bar |
| 12/09/2009 | CN201358725Y Vertical rod locking device for automatically arranging drill rods |
| 12/09/2009 | CN201358724Y Automatic pressure-regulating oil seal driving shaft assembly |
| 12/09/2009 | CN201358714Y Spiral drilling machine of formed concrete pile |
| 12/09/2009 | CN101600848A Drilling tool |
| 12/09/2009 | CN100567699C Method for manufacturing collar preset sucker rod |
| 12/08/2009 | US7630866 Method of dimensioning a drilling riser |
| 12/08/2009 | US7628211 Method of connecting control lines to well bore equipment for controlling a well on a batch basis |
| 12/08/2009 | CA2409026C Method for making a quasi-incompressible phase-change material with low thermal conductivity, and resulting product |
| 12/08/2009 | CA2320028C Method for manufacturing a connection for composite tubing |
| 12/03/2009 | WO2009146010A2 Casing stabbing guide |
| 12/03/2009 | WO2009143628A1 Cementing sub for annulus cementing |
| 12/03/2009 | WO2009109776A3 Mould for forming a cladding upon an elongate member |
| 12/03/2009 | US20090297277 Hybrid riser tower and method of installation thereof |
| 12/03/2009 | CA2726200A1 Cementing sub for annulus cementing |
| 12/02/2009 | EP2128376A2 Flow restrictor coupling |
| 12/02/2009 | EP2126273A2 Oilfield threaded connection |
| 12/02/2009 | CN201354631Y Mechanical throwing-in and pulling gas well underground releasing testing tool |
| 12/02/2009 | CN201354616Y Horizontal well separate injection packer |
| 12/02/2009 | CN201354597Y Crude oil anti-theft device in sleeve |
| 12/02/2009 | CN201354596Y Resistance reducing drilling tool stabilizer |
| 12/02/2009 | CN201354595Y Double-acting stabilizer for reducing resistance and torsion |
| 12/02/2009 | CN201354594Y Buoyancy burglar-proof oil pipe pup joint |
| 12/02/2009 | CN201354593Y Oil increment pup joint |
| 12/02/2009 | CN201354592Y Drill rod |
| 12/02/2009 | CN201354590Y Marine riser device for ocean deepwater drilling |
| 12/02/2009 | CN201354584Y Screw drill tool |
| 12/02/2009 | CN101595272A Microtunnelling system and apparatus |
| 12/02/2009 | CN101592030A Method for controlling reasonable driving depth of offshore cluster well group risers |
| 12/02/2009 | CN101591783A Technique of producing alloy coating hot spray oil pumping polish rod |
| 12/01/2009 | US7624822 Thread joint |
| 12/01/2009 | US7624799 Rotationally locked wear sleeve for through-tubing drilling and completion |
| 12/01/2009 | US7624798 Centralizer for expandable tubulars |
| 12/01/2009 | CA2424228C Method and apparatus for integrated horizontal selective testing of wells |
| 12/01/2009 | CA2372522C Time-delayed connector latch |
| 11/26/2009 | WO2009142916A1 Cutting windows for lateral wellbore drilling |
| 11/26/2009 | WO2009142509A1 Pipe string landing device and a bore hole cementing method |
| 11/26/2009 | WO2009122166A3 Complex pipe monitoring |
| 11/26/2009 | US20090288842 Method of radially expanding a tubular element |
| 11/26/2009 | CA2724565A1 Cutting windows for lateral wellbore drilling |
| 11/26/2009 | CA2632634A1 Adjustable angle drive connection for a down hole drilling motor |
| 11/25/2009 | EP2122116A1 Power umbilical |
| 11/25/2009 | EP2122115A1 Shoulder ring with axial retention means, and tools for installing same |
| 11/25/2009 | EP2122114A2 Flexible riser pipe installation for conveying hydrocarbons |
| 11/25/2009 | EP2122108A1 Arrangement and method for drilling |
| 11/25/2009 | CN201351480Y Kelly multifunctional automatic leak-proof valve |