| Patents for E21B 17 - Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings (27,800) |
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| 09/03/2009 | US20090218105 Hydraulically Driven Tandem Tractor Assembly |
| 09/03/2009 | US20090218093 Use of a Steel Composition for the Production of an Armouring Layer of a Flexible Pipe and the Flexible Pipe |
| 09/03/2009 | CA2717048A1 Tubular member having self-adjusting valves controlling the flow of fluid into or out of the tubular member |
| 09/03/2009 | CA2716586A1 Threaded joint with improved resilient seal ring |
| 09/02/2009 | EP2096253A1 Threaded joint with improved resilient seal ring |
| 09/02/2009 | EP2094933A1 Device for percussion drilling or rotary percussion drilling in rocky material |
| 09/02/2009 | EP1461560B1 Premium tubular threaded joint comprising at least a threaded element with end lip |
| 09/02/2009 | CN201301673Y Front stabilizing device with T-shaped groove for top-drive back-up tong |
| 09/02/2009 | CN201301672Y Full-hydraulic drilling string shock absorber |
| 09/02/2009 | CN201301671Y Double-shoulder drill pipe joint |
| 09/02/2009 | CN201301670Y A dual-steel impact drill pipe |
| 09/02/2009 | CN201301669Y Efficient hydronic-heating oil-pumping rod |
| 09/02/2009 | CN101520119A Concentric double layer oil pipe |
| 09/02/2009 | CN101519950A Integrated flow control device and isolated component |
| 09/01/2009 | US7581766 Reinforced tubular joint for improved sealing-tightness after plastic expansion |
| 09/01/2009 | US7581601 Drill cuttings re-injection system |
| 09/01/2009 | CA2515044C Shoe for expandable liner system |
| 09/01/2009 | CA2511628C Downhole filter |
| 09/01/2009 | CA2469392C Expandable locking thread joint |
| 09/01/2009 | CA2442320C Method and device for drilling a hole and for securing an anchorage in a bore hole |
| 08/27/2009 | WO2009105697A1 Friction welded compression based tubular structures and method for forming same |
| 08/27/2009 | WO2009103999A2 Improved tubing section |
| 08/27/2009 | US20090211815 Dual Pipe for Increased Fluid Flow |
| 08/27/2009 | US20090211760 Well servicing tool storage system for subsea well intervention |
| 08/27/2009 | CA2715861A1 Improved tubing section |
| 08/26/2009 | CN201297155Y Drill rod liquid-discharging valve |
| 08/26/2009 | CN201297136Y Well oil pressure type reducing stabilizer |
| 08/26/2009 | CN201297135Y A casing location tripping hoop |
| 08/26/2009 | CN201297134Y A coiled tubing (pole) clamping block unit equipment |
| 08/26/2009 | CN201297133Y Kelly bar |
| 08/26/2009 | CN201297129Y Automatic well hydraulic pressure vibration reduction bit-feeding device |
| 08/26/2009 | CN101514610A Holding spiral drill pipe with wide blade |
| 08/26/2009 | CN101514609A Spiral drill pipe with T-shaped blade |
| 08/26/2009 | CN100532779C Intelligent drilling rod compensation-type electric joint |
| 08/25/2009 | US7578360 Dynamic damper for use in a drill string |
| 08/25/2009 | US7578043 Coupling tubulars |
| 08/25/2009 | US7578038 Apparatus and methods for remote installation of devices for reducing drag and vortex induced vibration |
| 08/25/2009 | CA2623712A1 No-turn centralizing tool |
| 08/25/2009 | CA2530398C Coupling for dual member pipe |
| 08/25/2009 | CA2432013C Electrical connectors |
| 08/20/2009 | WO2009101507A2 Durability of downhole tools |
| 08/20/2009 | WO2009101378A1 Apparatus for protecting a riser string |
| 08/20/2009 | WO2009101279A2 Riser pipe segment with flanged auxiliary ducts and bayonet connections |
| 08/20/2009 | WO2009101125A1 Method of producing hydrocarbons through a smart well |
| 08/20/2009 | WO2009071762A3 Method of installing a tubular undersea pipeline |
| 08/20/2009 | WO2009048768A4 Modular connector and method |
| 08/20/2009 | US20090209352 Energy managing keel joint |
| 08/20/2009 | US20090208295 Drilling rig riser identification apparatus |
| 08/20/2009 | US20090205839 Expandable connection |
| 08/20/2009 | US20090205837 Hydraulic connector apparatuses and methods of use with downhole tubulars |
| 08/20/2009 | US20090205836 Hydraulic connector apparatuses and methods of use with downhole tubulars |
| 08/20/2009 | US20090205827 Hydraulic connector apparatuses and methods of use with downhole tubulars |
| 08/20/2009 | CA2715162A1 Force element arrangement and method |
| 08/20/2009 | CA2715094A1 Method of producing hydrocarbons through a smart well |
| 08/19/2009 | EP2090741A1 Durability of downhole tools |
| 08/19/2009 | EP2090267A2 Piping |
| 08/19/2009 | CN201292785Y Center fetching inner barrel righting fittings |
| 08/19/2009 | CN201292784Y Sleeve pipe floatage coupling |
| 08/19/2009 | CN201292783Y Inside tube column rotary joint of sidetrack horizontal well |
| 08/19/2009 | CN201292782Y Canula mobile type cardan joint |
| 08/19/2009 | CN201292781Y Pressure equilibrium elevator for rotary dugging drill |
| 08/19/2009 | CN201292780Y Big through-hole wind pressure sealing drill rod |
| 08/19/2009 | CN201292779Y Underground travel increasing apparatus for oil pumping machine |
| 08/19/2009 | CN201292778Y Drilling pressure control apparatus for well repairing |
| 08/19/2009 | CN201292777Y Hollow polished rod bending proof and leakage proof means |
| 08/19/2009 | CN201292764Y Branch downhole sleeve pipe autorotation apparatus |
| 08/19/2009 | CN101512097A Drilling equipment |
| 08/19/2009 | CN101509357A Double-power low spiral auger and its processing method |
| 08/19/2009 | CN101509356A Tubing coupling jar |
| 08/19/2009 | CN101509355A Double drilling rod drive apparatus and double drill rod mash gas outburst prevention drill |
| 08/19/2009 | CN100529498C Threaded joint for steel pipes |
| 08/19/2009 | CN100529326C Mechanism helping to make traction on flat surface and non-flat surface |
| 08/19/2009 | CN100529030C Composition for lubricating-film formation suitable for lubrication of screw joint |
| 08/18/2009 | US7575060 Collapse resistance of tubing |
| 08/18/2009 | US7575057 Polymeric gel system and use in hydrocarbon recovery |
| 08/18/2009 | CA2527944C Threaded joint for steel pipes |
| 08/18/2009 | CA2452888C Friction reducing composition and method |
| 08/18/2009 | CA2385724C Composite coiled tubing end connector and pipe-to-pipe connector |
| 08/13/2009 | US20090200013 Well tubular, coating system and method for oilfield applications |
| 08/12/2009 | CN201288518Y Simple and practical drilling rod centralizer |
| 08/12/2009 | CN201288517Y Sucking assistant centralizer for sucker rod |
| 08/12/2009 | CN201288516Y Down-hole centralizing leading-in device |
| 08/12/2009 | CN201288515Y Thermal actuator and system for separating second member from first member at expected position in well |
| 08/12/2009 | CN201288514Y Novel hydraulic presser |
| 08/12/2009 | CN201288513Y Drill collar with same elevator groove |
| 08/12/2009 | CN201288508Y Screw drilling toll for large diameter PDC drill |
| 08/12/2009 | CN101506461A Coupling device |
| 08/12/2009 | CN101506460A Articulated extraction pipe |
| 08/12/2009 | CN101503949A Double-thread hollow coring drill rod |
| 08/12/2009 | CN101503948A Heavy-duty universal coupling device used for coupling drilling tool and drilling rod |
| 08/11/2009 | US7571779 Drill rod and method of manufacture thereof |
| 08/11/2009 | US7571777 Method and apparatus for a monodiameter wellbore, monodiameter casing, monobore, and/or monowell |
| 08/11/2009 | CA2550207C Method and apparatus for conducting earth borehole operations using coiled casing |
| 08/11/2009 | CA2549541C Mass isolation joint for electrically isolating a downhole tool |
| 08/11/2009 | CA2535259C Pothead assembly |
| 08/11/2009 | CA2471638C Fluid dispenser assembly |
| 08/11/2009 | CA2366096C Casing head connector with landing base |
| 08/06/2009 | WO2009095794A2 Spiral ribbed aluminum drillpipe |
| 08/06/2009 | WO2009055412A3 Drill-string shock absorbers |
| 08/06/2009 | US20090194338 Method and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells |