| Patents for E21B 17 - Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings (27,800) |
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| 05/30/2013 | WO2013076360A1 Method and apparatus for plastic pipe drilling |
| 05/30/2013 | WO2013075228A1 Rotatable and bendable casing connection |
| 05/30/2013 | WO2013022733A3 Compositions, methods of coating wellbore tools with such compositions, and wellbore tools coated with such compositions |
| 05/30/2013 | WO2012061506A4 A drilling system and a device for assembling and disassembling pipe stands |
| 05/30/2013 | WO2012049459A3 Pressure bearing wall and support structure therefor |
| 05/30/2013 | US20130133953 Reverse circulation drilling system, apparatus and method |
| 05/30/2013 | US20130133895 Mechanical bending weak link |
| 05/30/2013 | CA2853066A1 Method and apparatus for plastic pipe drilling |
| 05/30/2013 | CA2759711A1 Reverse circulation drilling system, apparatus and method |
| 05/29/2013 | EP2597251A1 Entry tube system |
| 05/29/2013 | EP2597250A1 Longitudinal absorber for downhole tool chassis |
| 05/29/2013 | EP2596198A1 Wellbore tool with exchangable blades |
| 05/29/2013 | CN202954753U Screw pump well extract integrated tool for strengthening |
| 05/29/2013 | CN202954752U Anti-drag centralizer |
| 05/29/2013 | CN202954751U Thread casing pipe connector capable of being quickly screwed on and screwed off |
| 05/29/2013 | CN202954750U Multi-hole rotating joint |
| 05/29/2013 | CN202954749U Automatic rotation-adjusting device for inlet manifold of oil field cementing truck |
| 05/29/2013 | CN202954748U Multifunctional oil casing |
| 05/29/2013 | CN202954747U Drainage and production string of coal-bed gas well |
| 05/29/2013 | CN103124831A Inductive couplers for use in a downhole environment |
| 05/29/2013 | CN103124829A Torque enhanced threaded connection |
| 05/29/2013 | CN103122753A Near-sea separation and tie-back device for typhoon-resisting drilling risers |
| 05/29/2013 | CN103122751A 一种油井管保护帽 One kind of OCTG protective cap |
| 05/29/2013 | CN102278078B Anti-pull-off protector for coiled tubing and application method thereof |
| 05/28/2013 | US8448722 Drilling stabilizer |
| 05/28/2013 | CA2796683A1 Torque limiting device |
| 05/28/2013 | CA2701232C Pipe connection system |
| 05/28/2013 | CA2593215C Pseudo two-step connection |
| 05/28/2013 | CA2553236C Downhole drilling of a lateral hole |
| 05/25/2013 | CA2759606A1 Rotatable and bendable casing connection |
| 05/23/2013 | WO2013074392A1 Hydrostatic pressure independent actuators and methods |
| 05/23/2013 | WO2013074248A1 Reactive choke for automatic wellbore fluid management and methods of using same |
| 05/23/2013 | WO2013071983A1 Riser weak link |
| 05/23/2013 | WO2013071982A1 Riser recoil damping |
| 05/23/2013 | WO2013071935A1 An unbonded flexible pipe |
| 05/23/2013 | WO2013071369A1 Pressure feed system for a down hole drill |
| 05/23/2013 | WO2013006786A4 Methods of forming protecting coatings on substrate surfaces and devices including such protective coatings |
| 05/23/2013 | US20130126187 Entry Tube System |
| 05/23/2013 | CA2856315A1 Riser weak link |
| 05/23/2013 | CA2856312A1 Riser recoil damping |
| 05/23/2013 | CA2854960A1 An unbonded flexible pipe |
| 05/23/2013 | CA2854120A1 Reactive choke for automatic wellbore fluid management and methods of using same |
| 05/22/2013 | EP2595255A2 Flexible sealing connector |
| 05/22/2013 | EP2594730A1 Modular downhole tool |
| 05/22/2013 | EP2593701A1 An unbonded flexible pipe |
| 05/22/2013 | CN202946119U Pour-point reduction and gas injection energization integrated construction tubular column for high pour-point oil stratums |
| 05/22/2013 | CN202946045U Heavy weight drill pipe |
| 05/22/2013 | CN202946044U Hole-shrinkage stabilizer |
| 05/22/2013 | CN202946043U Centering guide |
| 05/22/2013 | CN202946042U Coupling protective cover used for drill rod |
| 05/22/2013 | CN202946041U Zigzag air-sealed oil well pipe thread joint structure |
| 05/22/2013 | CN202946040U Gas-type fitting used for rock drilling machine |
| 05/22/2013 | CN202946039U Cardan shaft shell body |
| 05/22/2013 | CN202946038U Drill rod joint wear-resisting belt |
| 05/22/2013 | CN202946037U Extra-high-pressure resistant carbon fiber composite material high pressure pipe |
| 05/22/2013 | CN202946036U Anti-thread-gluing oil pipe |
| 05/22/2013 | CN202946035U High-connection-strength deformation-resistant oil pipe |
| 05/22/2013 | CN202946034U Easy-positioning drill-free classification hoop center rod |
| 05/22/2013 | CN202946033U Anti-jamming hydraulic drill rod of breaking hammer |
| 05/22/2013 | CN202946032U Drill rod special for turning drilling machine |
| 05/22/2013 | CN202946031U Shank drill rod |
| 05/22/2013 | CN202946012U Sleeving spiral drilling machine for pile head processing |
| 05/22/2013 | CN103114816A High load drill stem and raise boring machine with the same |
| 05/22/2013 | CN103114815A Oil tube with righting device |
| 05/22/2013 | CN103114812A Diamond compact annular concentric simultaneous casing drilling bit and working method thereof |
| 05/22/2013 | CN103114292A Laser-cladded oil well pipe subjected to multicomponent cementation compound treatment and production process and device |
| 05/22/2013 | CN103113806A Novel metal nano polymer oil suction pipe anti-eccentric-wear powder paint and application method thereof |
| 05/22/2013 | CN102278080B Hydraulically-operated rotary casing guide shoe |
| 05/22/2013 | CN102191923B Long-distance control wellhead operation device for workover operation |
| 05/22/2013 | CN102162067B Steel for anticorrosion sucker rods in oil field and production method thereof |
| 05/22/2013 | CN101772616B Excavation device |
| 05/22/2013 | CN101535591B Annular electrical wet connect |
| 05/21/2013 | US8443928 Exhaust tail pipe |
| 05/21/2013 | US8443918 Excavation and compaction equipment for the construction of screw piles |
| 05/21/2013 | US8443917 Insertion coupling for a boring rod assembly and a boring rod assembly |
| 05/21/2013 | US8443898 Wellhead safety device |
| 05/21/2013 | US8443882 Wellbore centralizer for tubulars |
| 05/21/2013 | CA2663495C Coiled tubing wellbore drilling and surveying using a through the drill bit apparatus |
| 05/16/2013 | WO2013071005A1 Reinforced directional drilling assemblies and methods of forming same |
| 05/16/2013 | WO2013068326A1 High heat resistant polyamide for down hole oil components |
| 05/16/2013 | WO2013012509A3 Remote manipulation and control for subterranean tools |
| 05/16/2013 | WO2012174571A3 Subterranean tool with sealed electronic passage across multiple sections |
| 05/16/2013 | WO2012051148A3 Marine subsea assemblies |
| 05/16/2013 | US20130120154 Multiple distributed sensors along a drillstring |
| 05/16/2013 | US20130118761 Safety Switch for Well Operations |
| 05/16/2013 | US20130118757 Control line protection |
| 05/16/2013 | US20130118728 Component for drilling and operating hydrocarbon wells |
| 05/16/2013 | CA2855010A1 Reinforced directional drilling assemblies and methods of forming same |
| 05/16/2013 | CA2853938A1 Apparatus and method of forming a plug in a wellbore |
| 05/16/2013 | CA2853621A1 High heat resistant polyamide for down hole oil components |
| 05/15/2013 | EP2591201A2 Downhole inductive coupler assemblies |
| 05/15/2013 | EP2591200A2 Inductive couplers for use in a downhole environment |
| 05/15/2013 | CN202937210U Friction welded core barrel structure |
| 05/15/2013 | CN202937197U Friction welded sleeve structure |
| 05/15/2013 | CN202937196U Friction welded drill pipe structure |
| 05/15/2013 | CN202937195U Sucker rod universal joint |
| 05/15/2013 | CN202937194U Dustproof rock drilling machine |
| 05/15/2013 | CN202937183U Stone historical relic reinforcement lead hole drilling machine |
| 05/15/2013 | CN103109034A Arrangement at a rock drill and a rock drill |
| 05/15/2013 | CN103104234A Hollow sucker rod mixed chemical agent technique pipe column and working method thereof |