| Patents for E21B 17 - Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings (27,800) |
|---|
| 01/05/2011 | CN101936138A Oil-sucking polished rod and production method thereof |
| 01/05/2011 | CN101936137A Discharging and mining pipe for coalbed methane |
| 01/05/2011 | CN101936131A Rotary drilling rig |
| 01/05/2011 | CN101042044B Pumping rod or oil sucking pipe electroplating iron-nickel/tungsten alloy double-layer coating and surface processing technology |
| 01/04/2011 | US7861787 Wellbore fluid treatment tubular and method |
| 01/04/2011 | US7861776 System and method for forming a coiled tubing connection |
| 01/04/2011 | CA2587958C Polish rod clamp apparatus |
| 01/04/2011 | CA2441814C Tubing seal |
| 12/30/2010 | US20100326738 Drill packer member, drill pipe, and corresponding drill pipe string |
| 12/30/2010 | US20100326737 Flexible extrusion resistant ring for seal assembly |
| 12/30/2010 | US20100326731 Stabilizing downhole tool |
| 12/30/2010 | US20100326729 Casing bits, drilling assemblies, and methods for use in forming wellbores with expandable casing |
| 12/29/2010 | WO2010151796A2 Stabilizing downhole tool |
| 12/29/2010 | WO2010148494A1 Apparatus and method for stimulating subterranean formations |
| 12/29/2010 | WO2010129408A3 Subsea overload release system and method |
| 12/29/2010 | WO2010129236A3 Riser buoyancy adjustable thrust column |
| 12/29/2010 | WO2010021999A3 Connection for well bore drilling tools |
| 12/29/2010 | WO2009133542A3 Methods and apparatus for hydrocarbon recovery |
| 12/29/2010 | EP2265848A1 Improved tubing section coupling |
| 12/29/2010 | EP2265792A1 Joint arrangement for coupling of a drill shoe |
| 12/29/2010 | EP1378698B1 Threaded joint for steel pipe |
| 12/29/2010 | CN201687437U Oil pipe paraffin scraper capable of preventing mutual abrasion between sucker rod and oil pipe |
| 12/29/2010 | CN201687431U Movable grouting device |
| 12/29/2010 | CN201687415U Special drill stem for hard rocks |
| 12/29/2010 | CN201687414U Polish rod operating protective cover |
| 12/29/2010 | CN201687413U Pumping rod rotary coupling |
| 12/29/2010 | CN201687412U Novel bidirectional variable diameter connector |
| 12/29/2010 | CN201687411U Anti-corrosion coupling coaxial with oil pipe |
| 12/29/2010 | CN201687410U Intelligent multi-locking-point rotary drilling rig drill stem |
| 12/29/2010 | CN201687409U Recyclable self-grouting blind plate joint |
| 12/29/2010 | CN201687408U Diversion joint |
| 12/29/2010 | CN201687407U Gas-lift completion string used for high angle deviated holes |
| 12/29/2010 | CN201687406U Sleeve gas discharging pipeline of head of oil well |
| 12/29/2010 | CN201687405U Drilling oil pipe with hydrogen sulfide corrosion resistant coatings |
| 12/29/2010 | CN201687404U Drill stem pipe end thickened structure |
| 12/29/2010 | CN201687403U Heat insulating pipe for producing oil |
| 12/29/2010 | CN201687402U Spiral gas drainage drill pipe with circular-arc ribs |
| 12/29/2010 | CN201687401U Integral drive key sleeve type drill stem of rotary drilling rig |
| 12/29/2010 | CN101932789A Wellbore pipe centralizer having increased restoring force and self-sealing capability |
| 12/29/2010 | CN101929313A High-strength hydrogen-sulfide environmental corrosion-resistant seamless petroleum casing pipe and manufacturing method thereof |
| 12/29/2010 | CN101928893A Low-alloy steel resistant to carbon dioxide corrosion |
| 12/29/2010 | CN101928889A Steel for resisting sulfide corrosion and manufacturing method thereof |
| 12/29/2010 | CN101928888A Low-alloy steel for resisting carbon dioxide corrosion and manufacturing method thereof |
| 12/29/2010 | CN101928877A Steel for petroleum casing pipe, high-frequency welding petroleum casing pipe and manufacturing method thereof |
| 12/28/2010 | US7857063 Centraliser |
| 12/28/2010 | US7857058 Downhole swivel joint assembly and method of using said swivel joint assembly |
| 12/23/2010 | WO2010148301A2 Downhole tools and methods of setting in a wellbore |
| 12/23/2010 | WO2010147954A2 Weakpoint coupling of selectively adjustable load bearing capacity |
| 12/23/2010 | WO2010147785A1 System and method for connecting communication lines in a well environment |
| 12/23/2010 | WO2010146305A1 Intermediate disconnection tool to be placed in a shuttle lowered into a well for exploiting a fluid, and related shuttle and method |
| 12/23/2010 | WO2010145674A1 Wellbore tubing expansion cone |
| 12/23/2010 | WO2010122519A3 Well tubular, coating system and method for oilfield applications |
| 12/23/2010 | US20100319998 Wellbore consolidating tool for rotary drilling application |
| 12/23/2010 | US20100319997 Whipstock attachment to a fixed cutter drilling or milling bit |
| 12/23/2010 | US20100319930 Time-Controlled Release Device for Wireline Conveyed Tools |
| 12/23/2010 | CA2765929A1 Intermediate disconnection tool to be placed in a shuttle lowered into a well for exploiting a fluid, and related shuttle and method |
| 12/23/2010 | CA2765505A1 Weakpoint coupling of selectively adjustable load bearing capacity |
| 12/23/2010 | CA2763799A1 Downhole tools and methods of setting in a wellbore |
| 12/22/2010 | EP2262974A1 Coupling between wellbore tools having central transmission shafts |
| 12/22/2010 | EP2185785B1 Apparatus for and method of deploying a centralizer installed on an expandable casing string |
| 12/22/2010 | EP2140097B1 Stroker tool |
| 12/22/2010 | CN201679492U Quick connector for logging tool |
| 12/22/2010 | CN201679460U Centralizer with eccentric mounting of left and right balance rollers |
| 12/22/2010 | CN201679459U Rotary drilling rig, drill pipe and anti-blockage rod device |
| 12/22/2010 | CN201679458U Horizontal well sucker rod testing guiding protector |
| 12/22/2010 | CN201679457U Screw joint |
| 12/22/2010 | CN201679456U Static sealer for coiled tubing |
| 12/22/2010 | CN201679455U Continuous oil pipe dynamic sealer |
| 12/22/2010 | CN201679454U Two-way drilling plug-type drill pipe |
| 12/22/2010 | CN201679453U End part structure of aluminium alloy drill pipe |
| 12/22/2010 | CN1637229B Boring device and method for introducing a boring element into the ground |
| 12/22/2010 | CN101922288A Intelligent monitoring sucker rod and monitoring system thereof |
| 12/22/2010 | CN101921963A JLG105 steel stage oil drillpipe and production process thereof |
| 12/22/2010 | CN101921952A Steel for petroleum casing pipe, electric resistance welding petroleum casing pipe and manufacture methods thereof |
| 12/21/2010 | US7854275 Spring-operated anti-stall tool |
| 12/21/2010 | US7854259 PC rod guide with rotor ridges |
| 12/16/2010 | WO2010144842A1 Routing an electrical signal past a downhole connection used for semi stiff wellbore intervention rod |
| 12/16/2010 | WO2010143201A2 Dual rotary centralizer for a borehole |
| 12/16/2010 | WO2010142142A1 Socket type sucker rod special for screw pump |
| 12/16/2010 | WO2010142038A1 Drill rod locking assembly |
| 12/16/2010 | WO2010141969A2 Device for connecting electrical lines for boring and production installations |
| 12/16/2010 | WO2010141968A2 Connection between a drill pipe and a connector |
| 12/16/2010 | WO2010141967A2 Device for determining the length of a set of boring rods |
| 12/16/2010 | WO2010078111A3 Well equipment for heated fluid recovery |
| 12/16/2010 | WO2010041229A3 Buoyancy device for marine structures |
| 12/16/2010 | CA2808990A1 Socket type sucker rod special for screw pump |
| 12/16/2010 | CA2764656A1 Device for detecting the length of a drilling column |
| 12/16/2010 | CA2763704A1 Connection between a drill pipe and a connector |
| 12/16/2010 | CA2763366A1 Device for connecting electrical lines for drilling rigs and production installations |
| 12/15/2010 | EP2260173A1 Centraliser segment and centraliser |
| 12/15/2010 | EP2260172A1 Wellbore drilling accelerator and tubular connection |
| 12/15/2010 | EP1913231B1 Interface and method for wellbore telemetry system |
| 12/15/2010 | EP1606526B1 Method for preventing critical annular pressure buildup |
| 12/15/2010 | CN201671569U Multichannel drill pipe built in down-the-hole hammer |
| 12/15/2010 | CN201671568U Rapidly-mounting well oiling stabilizer |
| 12/15/2010 | CN201671567U Anti-eccentric wear and high temperature resistance composite sucker rod centralizer |
| 12/15/2010 | CN201671566U Bias-wearing-proof oil pumping device |
| 12/15/2010 | CN201671565U Drill rod directional anti-breakage oblique bracket of air-leg rock drill |
| 12/15/2010 | CN201671564U Suction-assistant, centralizing and retaining device for sucker rod |
| 12/15/2010 | CN201671563U Centralizer of oil tubular column of horizontal well of oil field |