| Patents for E21B 17 - Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings (27,800) |
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| 06/28/2011 | US7967065 Caisson system |
| 06/23/2011 | WO2011075045A1 An arrangement for joining double-walled drill rods and double-walled drill rod |
| 06/23/2011 | WO2011073204A1 Inhibiting liquid loading, corrosion and/or scaling in oilfield tubulars |
| 06/23/2011 | WO2011018713A3 Marine riser apparatus and method of installation thereof |
| 06/23/2011 | US20110148603 Oilfield equipment identification method and apparatus |
| 06/23/2011 | US20110147005 Method of running a down hole rotary pump |
| 06/23/2011 | US20110147003 Method for setting up a hybrid tower in an expanse of water, hybrid tower associated installation for exploiting fluids |
| 06/23/2011 | US20110146971 Low Clearance Centralizer and Method of Making Centralizer |
| 06/23/2011 | US20110146797 Flexible pipe support |
| 06/23/2011 | CA2782566A1 Inhibiting liquid loading, corrosion and/or scaling in oilfield tubulars |
| 06/22/2011 | EP2336482A2 Folding ultrasonic borehole imaging tool |
| 06/22/2011 | EP2334902A1 Gas evolving oil viscosity diminishing compositions for stimulating the productive layer of an oil reservoir |
| 06/22/2011 | EP2334892A2 Threaded connection |
| 06/22/2011 | EP2334891A2 Wired drill pipe having conductive end connections |
| 06/22/2011 | EP2334545A2 Buoyancy device for marine structures |
| 06/22/2011 | EP1977073B1 Steerable drilling system |
| 06/22/2011 | EP1678435B1 Guide tube for a flexible duct for transporting hydrocarbons |
| 06/22/2011 | CN201874568U Rock power extractor |
| 06/22/2011 | CN201874553U Wired while-drilling swirl guide shoe capable of being used for seating wireless circulating sleeve |
| 06/22/2011 | CN201874540U Oil production tubing string |
| 06/22/2011 | CN201874497U Water supply device for drill rod |
| 06/22/2011 | CN201874490U Multifunctional manifold for downhole minor repair operation |
| 06/22/2011 | CN201874489U Anti-eccentric wearing centralizing device for self-lubricating roller-type sucker rod |
| 06/22/2011 | CN201874488U Anti-wax and anti-eccentric wearing device for oil well |
| 06/22/2011 | CN201874487U Radial-inserting centralizer |
| 06/22/2011 | CN201874486U Anti-wearing device for sucker rod |
| 06/22/2011 | CN201874485U Metal sealed casing threaded connecting structure based on API (American Petroleum Institute) standard round threads |
| 06/22/2011 | CN201874484U Wellhead connector for glass fiber reinforced plastic casing |
| 06/22/2011 | CN201874483U Combining tool for starter joint |
| 06/22/2011 | CN201874482U Semi-spiral drill rod |
| 06/22/2011 | CN201874481U Rapid insertion type drill stem |
| 06/22/2011 | CN201874480U Quick inserting device of drill rod |
| 06/22/2011 | CN201874463U Safety anti-deviation drilling tool with half-piece type centralizers |
| 06/22/2011 | CN201874462U Flexible pressurizing drilling tool capable of correcting and preventing deviation |
| 06/22/2011 | CN201874461U Anti-deviation straightening while-drilling composite drilling device |
| 06/22/2011 | CN201874460U One-trip drilling tool for directional well |
| 06/22/2011 | CN201871473U Chain type airing bed used for oil bushing and drilling rod production line |
| 06/22/2011 | CN102102506A Fire flooding oil extraction layered steam injection method and separate injection tubular column adopted by same |
| 06/22/2011 | CN102102496A Fish milling experiment clamping and centralizing device in oilfield operation |
| 06/22/2011 | CN102102495A Anti-releasing device for screw drilling tool |
| 06/22/2011 | CN102102494A Snap spring quick connector for marine drilling marine riser |
| 06/22/2011 | CN102102493A High-intensity compound tube |
| 06/22/2011 | CN102102492A Straight-joint type insulated tubing and processing technology thereof |
| 06/22/2011 | CN102102489A Turbine drilling tool bearing block having permanent magnet bearing |
| 06/21/2011 | US7963337 Composite enhanced metallic drilling riser system |
| 06/21/2011 | CA2640182C Apparatus for keeping a down hole drilling tool vertically aligned |
| 06/21/2011 | CA2563213C Threaded joint for steel pipe and process for producing the same |
| 06/16/2011 | WO2011071901A2 Dissolvable tool and method |
| 06/16/2011 | WO2011071691A2 Telescopic unit with dissolvable barrier |
| 06/16/2011 | WO2011031682A3 Multiple electric submersible pump system |
| 06/16/2011 | WO2011022580A3 Zero backlash downhole setting tool and method |
| 06/16/2011 | WO2011011608A4 Apparatus and method for coupling conduit segments |
| 06/16/2011 | US20110142546 Self-Standing Riser System Having Multiple Buoyancy Chambers |
| 06/16/2011 | US20110139510 Apparatus and Method for Reaming a Wellbore During the Installation of a Tubular String |
| 06/16/2011 | US20110139438 Sleeve assembly for downhole tools |
| 06/16/2011 | CA2784927A1 Design method for subsea equipment subject to hydrogen induced stress cracking |
| 06/16/2011 | CA2783113A1 Telescopic unit with dissolvable barrier |
| 06/15/2011 | EP2331786A1 Instrumented drill string element |
| 06/15/2011 | EP2331785A1 Auger boring machine |
| 06/15/2011 | EP2097610B1 Expandable reamers for earth-boring applications and methods of using the same |
| 06/15/2011 | CN201865654U Automatic return control device of rotary drilling machine |
| 06/15/2011 | CN201865597U Laminated fracturing protection device for continuous oil pipe |
| 06/15/2011 | CN201865596U Oil tube insulating centralizer |
| 06/15/2011 | CN201865595U Damage-free oil tube centralizer |
| 06/15/2011 | CN201865594U Stress reducing drill pipe connector with high torsion resistance |
| 06/15/2011 | CN201865593U Anti-eccentric wear coupling of sucker rod |
| 06/15/2011 | CN201865592U FRP (fiber reinforced plastic) sleeve column |
| 06/15/2011 | CN201865591U Plug-in dual-screw drilling rod |
| 06/15/2011 | CN201865590U Castellated flange-connected drilling rod for drilling machine |
| 06/15/2011 | CN201865564U On-board rotary drilling rig |
| 06/15/2011 | CN102094615A Method for completing coalbed methane horizontal well by using thermal sieve tube |
| 06/15/2011 | CN102094584A Double-acting type drill stem stabilizing device |
| 06/15/2011 | CN102094583A Underground composite cable and mounting device matched therewith |
| 06/15/2011 | CN102094582A Bimetallic oil distributing sleeve for full-hydraulic drilling machine and processing method thereof |
| 06/15/2011 | CN102094578A Drilling mechanism |
| 06/15/2011 | CN102094575A Breaking mechanism with rotatable drill rod |
| 06/15/2011 | CN102094197A Plasma cladding method for processing dust-removal-assisting wear-resistant spiral drill stem |
| 06/15/2011 | CN101324176B Spring self-switching type Y-shaped joint |
| 06/14/2011 | US7962288 Multiple distributed force measurements |
| 06/14/2011 | CA2503231C Enhanced durability hammer union |
| 06/14/2011 | CA2432501C Connectable rod system for driving downhole pumps for oil field installations |
| 06/10/2011 | CA2727745A1 An improved seal between pipes |
| 06/10/2011 | CA2688702A1 Interlocking engagement mechanism for an adjustable bent housing |
| 06/09/2011 | WO2011067529A2 Assembly for connecting a flexible tubular line to an underwater installation |
| 06/09/2011 | WO2011067353A2 Assembly and method for subsea well drilling and intervention |
| 06/09/2011 | WO2011022574A3 Zero backlash downhole setting tool and method |
| 06/09/2011 | US20110132614 Wireline Run Mechanically or Hydraulically Operated Subterranean Insert Barrier Valve and Associated Landing Nipple |
| 06/09/2011 | US20110132596 Wellbore Method and Apparatus For Completion, Production and Injection |
| 06/09/2011 | CA2782168A1 Assembly and method for subsea well drilling and intervention |
| 06/08/2011 | EP2329175A1 Flexible riser installation for carrying hydrocarbons used at great depths |
| 06/08/2011 | EP2329105A1 Cementing enhancement device |
| 06/08/2011 | EP2329100A2 A riser connector |
| 06/08/2011 | EP2329099A1 Improvements in hybrid riser towers and fabrication thereof |
| 06/08/2011 | EP2329098A1 Methods and associated apparatus of constructing and installing rigid riser structures |
| 06/08/2011 | EP2329097A1 Coil tubing guide |
| 06/08/2011 | CN201857947U Non-casing-pressure, high-efficiency and heat-insulation steam injection string |
| 06/08/2011 | CN201857920U Lubricating device for polish rod of beam-pumping unit |
| 06/08/2011 | CN201857906U Nylon paraffin-scraping and centering device of sucker rod |
| 06/08/2011 | CN201857905U Anti-drop and anti-wear device of sucker rod |
| 06/08/2011 | CN201857904U Soft sealing structure for drill rods |