| Patents for E21B 17 - Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings (27,800) |
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| 04/21/2011 | US20110088903 Instrumented disconnecting tubular joint |
| 04/20/2011 | EP2312114A1 Coupling device between an assembly of tubular strings and drill strings and the means for rotating of said strings |
| 04/20/2011 | EP2310614A1 Latch system for friction-locked tubular members |
| 04/20/2011 | EP2310613A1 Improved riser weak link |
| 04/20/2011 | EP1093540B1 Method and multi-purpose apparatus for control of fluid in wellbore casing |
| 04/20/2011 | CN201802371U Suspended speed tail pipe |
| 04/20/2011 | CN201802326U Anchoring device capable of preventing rotation of underground pipe column |
| 04/20/2011 | CN201802325U Well mouth centering spanner for tubing hanger |
| 04/20/2011 | CN201802324U Reinforcing sleeve device |
| 04/20/2011 | CN201802323U Drilling rod with hemispherical front end for rotary drilling rig |
| 04/20/2011 | CN201802322U Intelligent shock absorber for logging instrument |
| 04/20/2011 | CN201802321U Safe joint for testing tubular column tail tube |
| 04/20/2011 | CN201802320U Mechanical hydraulic difunctional release sub |
| 04/20/2011 | CN201802313U Combined rock reamer |
| 04/20/2011 | CN102027186A Threaded joint with improved resilient seal ring |
| 04/20/2011 | CN102027184A Stator for use in helicoidal motor |
| 04/20/2011 | CN102022104A Open-hole packer for open-hole horizontal well and preset connector fracturing well completion method |
| 04/20/2011 | CN102022088A Stabplate connections |
| 04/20/2011 | CN102022087A Key-driven telescopic multi-layer drill stem with internal continuous channels |
| 04/20/2011 | CN102022086A Economical seamless oil well pipe for expansion pipe and manufacturing method thereof |
| 04/20/2011 | CN102022077A Drilling device for underground embedded pipe orifice well of soil source heat pump system |
| 04/20/2011 | CN101567245B Down-hole casing tube demagnetizer and using method thereof |
| 04/20/2011 | CN101487379B Security protection apparatus of pumping rod |
| 04/20/2011 | CN101307677B Renewed superhigh intensity distortion-resistant abrasion-proof oil well pipe and its process |
| 04/19/2011 | US7927041 Deep water flexible riser protection |
| 04/19/2011 | US7926596 Drag bit with utility blades |
| 04/19/2011 | US7926592 Steerable drilling system |
| 04/19/2011 | CA2623231C Earth boring drill bits with casing component drill out capability, cutting elements for same, and methods of use |
| 04/19/2011 | CA2514437C Process and system for drilling and lining a bore hole |
| 04/19/2011 | CA2512833C Wellstring assembly |
| 04/19/2011 | CA2460245C Apparatus to mechanically load a compression member |
| 04/14/2011 | WO2011044314A2 Driven latch mechanism |
| 04/14/2011 | WO2011044028A2 Oilfield operation using a drill string |
| 04/14/2011 | WO2011043768A1 Combination injection string and distributed sensing string |
| 04/14/2011 | WO2011042023A1 A flexible unbonded oil pipe system with an optical fiber sensor inside |
| 04/14/2011 | WO2011041860A1 Hydrodynamic damper for catenary riser |
| 04/14/2011 | WO2010141969A3 Device for connecting electrical lines for boring and production installations |
| 04/14/2011 | WO2010118186A4 Friction reducing wear band and method of coupling a wear band to a tubular |
| 04/14/2011 | US20110083853 Inertia transition pipe element, in particular for restraining a rigid undersea pipe |
| 04/14/2011 | US20110083841 Drill pipe |
| 04/14/2011 | DE112008003817T5 Dichte Gewindeverbindung für Ölfeldrohre Density threaded connection for oilfield tubulars |
| 04/14/2011 | CA2776923A1 Driven latch mechanism |
| 04/14/2011 | CA2775764A1 A flexible unbonded oil pipe system with an optical fiber sensor inside |
| 04/14/2011 | CA2714474A1 Drill pipe |
| 04/14/2011 | CA2682630A1 Drill pipe with threaded extensions |
| 04/13/2011 | EP2309095A1 Method and apparatus for releasably connecting a wireline to a downhole tool |
| 04/13/2011 | EP2307660A2 Riser clamp |
| 04/13/2011 | EP2307656A2 Reaming tool |
| 04/13/2011 | EP2307655A2 Reaming tool |
| 04/13/2011 | CN201794567U Sucker polished rod |
| 04/13/2011 | CN201794563U Selective production string optionally adjustable within four layers |
| 04/13/2011 | CN201794527U Casing float collar |
| 04/13/2011 | CN201794526U Anti-eccentric wear oil pipe collar |
| 04/13/2011 | CN201794525U Sucker rod trip operating device under pressure |
| 04/13/2011 | CN201794524U Anti-ice waterproof casing combined structure |
| 04/13/2011 | CN102016220A Aluminum riser assembly |
| 04/13/2011 | CN102011584A Rock powder extractor |
| 04/13/2011 | CN102011576A Method for hierarchically diagnosing fault of rod-comprising oil pumping system based on indicator diagram |
| 04/13/2011 | CN102011558A Torque shoulder of special screwed nipple for oil tubes and sleeves |
| 04/13/2011 | CN102011557A Special screw thread joint of high air-tight seal oil sleeve |
| 04/13/2011 | CN102010573A Novel carbon fiber sucker rod and manufacturing method thereof |
| 04/13/2011 | CN101215957B Rolling friction type boring machine sliding bush |
| 04/12/2011 | US7921925 Method and apparatus for expanding and separating tubulars in a wellbore |
| 04/12/2011 | CA2589914C Martensitic stainless steel oil country tubular good |
| 04/12/2011 | CA2498824C Protection means for a flexible riser |
| 04/07/2011 | WO2011041305A2 Line retention arrangement and method |
| 04/07/2011 | WO2011008431A3 Metal-to-metal annulus seal arrangement |
| 04/07/2011 | WO2011005517A3 Through tubing intelligent completion and method |
| 04/07/2011 | WO2009152391A3 Method of removing cutters |
| 04/07/2011 | US20110079439 Method and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells |
| 04/07/2011 | US20110079385 Centraliser segment and centraliser |
| 04/07/2011 | US20110079380 Subsurface well completion system having a heat exchanger |
| 04/06/2011 | EP2304171A2 Methods and apparatus for hydrocarbon recovery |
| 04/06/2011 | EP2304164A1 Underwater hydrocarbon transport apparatus |
| 04/06/2011 | EP2303679A1 An improved seawater suction system |
| 04/06/2011 | EP1937931B1 A device for cleaning and doping equipment for threads |
| 04/06/2011 | CN201786334U Negative-pressure gas production process tubular column |
| 04/06/2011 | CN201786280U Wear-resistant spiral drill collar with middle-thickened tube |
| 04/06/2011 | CN201786279U Spiral drill collar with abrasion-resistant belt |
| 04/06/2011 | CN201786278U Spiral drill collar |
| 04/06/2011 | CN201786277U Apparatus for scrubbing and protecting underground oil extraction machine |
| 04/06/2011 | CN201786276U Sealing protection device of under-ground oil production machine |
| 04/06/2011 | CN201786275U Apparatus for preventing overturn of well workover pipe string |
| 04/06/2011 | CN201786274U High wear resistance rotary sucker rod eccentric wear prevention centralizer |
| 04/06/2011 | CN201786273U Skinner's macaroni for non-standard workover |
| 04/06/2011 | CN201786272U Driving connecting device for drilling machine |
| 04/06/2011 | CN201786271U Oilfield oil casing production device |
| 04/06/2011 | CN201786270U Automatic liquid filling double-layer combined casing pipe |
| 04/06/2011 | CN201786269U High-speed self-cleaning eddy inner overflowing mechanism |
| 04/06/2011 | CN102007263A Open-faced rod spinner |
| 04/06/2011 | CN102003152A Lip type reversing coupling double-spiral blade type vortex induced vibration restraining device for deep sea vertical pipe |
| 04/06/2011 | CN102003151A Special stabilizer for gas drilling |
| 04/06/2011 | CN102003150A Convex counterweight centralizer for pumping unit |
| 04/06/2011 | CN102003149A Screw pump sucker rod connector |
| 04/06/2011 | CN102003148A Oil casing pipe resisting CO2 corrosion and production method thereof |
| 04/06/2011 | CN102002941A Large-aperture long screw rig, reinforcement cage concreting device and fabricating method of large-aperture deep pile |
| 04/05/2011 | US7918284 Protective sleeve for threaded connections for expandable liner hanger |
| 04/05/2011 | US7918274 Downhole tools |
| 03/31/2011 | WO2011037591A1 Pipe conveyed extendable well logging tool with protector |
| 03/31/2011 | WO2011037546A2 Method of disintegrating materials and device for performing the method |