| Patents for E21B 17 - Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings (27,800) |
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| 02/27/2008 | CN201027497Y Splicing jackrod |
| 02/27/2008 | CN201027491Y Wire controlled hydraulic pressure vibration drilling-grubbing system |
| 02/27/2008 | CN101133229A Expandable tubular component with variable material character |
| 02/27/2008 | CN101131091A Down-hole coal bed air-pressing helix drilling tools and drilling method using the same |
| 02/27/2008 | CN101131070A Protective sleeve for threaded connections for expandable liner hanger |
| 02/27/2008 | CN101131069A Hole-digging and temperature-reducing drilling tool for outburst coal seam and drilling method thereof |
| 02/26/2008 | US7334967 Method and arrangement by a workover riser connection |
| 02/26/2008 | US7334821 Premium threaded tubular joint comprising at least a threaded element with end lip |
| 02/26/2008 | US7334649 Drilling with casing |
| 02/22/2008 | CA2598154A1 System and method for forming a coiled tubing connection |
| 02/21/2008 | WO2008022274A1 Control of flexible riser curvature at the keel of a floating structure |
| 02/21/2008 | WO2008020226A1 Turbulent flow tool |
| 02/21/2008 | US20080044221 Quick-locking connector |
| 02/21/2008 | US20080042428 Protective compression and tension sleeves for threaded connections for radially expandable tubular members |
| 02/21/2008 | US20080041631 Method and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells |
| 02/21/2008 | US20080041629 Steerable bit system assembly and methods |
| 02/21/2008 | US20080041583 Anchoring device for a wellbore tool |
| 02/20/2008 | EP1889997A1 Expandable Apparatus for Drift and Reaming a Borehole |
| 02/20/2008 | EP1709288A4 Tubular stabbing protector and method |
| 02/20/2008 | EP1339992B9 Knuckle-swivel for drilling wells |
| 02/20/2008 | CN201025018Y Once pipe pole using hierarchical acidification pressure crack technology |
| 02/20/2008 | CN201024927Y Novel wearable centralizer for screw pump well and pumping well pole |
| 02/20/2008 | CN201024926Y Trolley spiral bushing centralizer |
| 02/20/2008 | CN201024925Y Locking and fixing supporter for sucker rod at any position |
| 02/20/2008 | CN201024924Y Rotary short pole centralizer |
| 02/20/2008 | CN201024923Y Automatic wax centralizer for wax aggregation section of pole pumping well |
| 02/20/2008 | CN201024922Y Bushing centralizing table |
| 02/20/2008 | CN201024921Y Under-well guide protector |
| 02/20/2008 | CN201024920Y Wax cleaning, friction deviation preventive and antiseptic tool |
| 02/20/2008 | CN201024919Y Self sealing sucker rod centralizer |
| 02/20/2008 | CN201024918Y A pole connection centralizer for trapeziform side inserted release preventive screw pump well |
| 02/20/2008 | CN201024917Y A pole wresting spiral centralizer for screw pump well |
| 02/20/2008 | CN201024916Y Guide centralizer for oil sucker rod |
| 02/20/2008 | CN201024915Y Jet preventive connecting-tripping device |
| 02/20/2008 | CN201024914Y A connection hoop for under-well pipe pole |
| 02/20/2008 | CN201024913Y An ultra-high strong antiseptic, wearing-endurable and viscidity preventive connection device |
| 02/20/2008 | CN201024912Y Metal sealing petroleum tube connector |
| 02/20/2008 | CN201024911Y Top drive device for bushing artesian well |
| 02/20/2008 | CN201024910Y A drilling pole of spiral driller |
| 02/20/2008 | CN201024909Y Improved taper slim pole |
| 02/20/2008 | CN201024908Y An ultra-strong antiseptic oil well pipe and its connection hoop |
| 02/20/2008 | CN201024907Y An ultra-strong friction welding oil well pipe |
| 02/20/2008 | CN201024906Y Glass reinforced plastic sucker rod |
| 02/20/2008 | CN201024905Y Release preventer for petroleum exploration tube of screw pump |
| 02/20/2008 | CN201024896Y Well fixing tool for bushing artesian well bottom |
| 02/20/2008 | CN201024894Y Drilling clamp |
| 02/20/2008 | CN201024893Y Whole pressure sealing tieback assembly for branch well |
| 02/20/2008 | CN201024891Y Long spiral replaced and compacted driller |
| 02/20/2008 | CN101126306A Casing drag reduction adapter |
| 02/20/2008 | CN101126305A Intelligent drilling rod compensation-type electric joint |
| 02/19/2008 | CA2459723C Active controlled bottomhole pressure system and method |
| 02/19/2008 | CA2403060C Methods, apparatus and products useful in the operation of a sucker rod pump during the production of hydrocarbons |
| 02/19/2008 | CA2333516C Arrangement for the removal of cuttings and gas arising from drilling operations |
| 02/15/2008 | CA2557419A1 For downhole reciprocating pumps, a no tap tool with a clutch |
| 02/14/2008 | WO2008017937A1 Improvements in or relating to water suction hoses |
| 02/14/2008 | WO2008017849A1 Treating liquids in oil extraction |
| 02/14/2008 | WO2008017807A1 Apparatus and method for controlling motion of a bend stiffener |
| 02/14/2008 | US20080035379 Stabilizing system and methods for a drill bit |
| 02/14/2008 | US20080035351 Twin Fin Fairing |
| 02/14/2008 | US20080035331 Epoxy secured web collar |
| 02/14/2008 | US20080035251 Method of Manufacturing a Tubular Member |
| 02/14/2008 | DE102006037110A1 Bohrgestänge und Verfahren zur Durchführung von Bohrungen in Erdreich Drill string and method for carrying out drilling in the ground |
| 02/14/2008 | CA2663963A1 Treating liquids in oil extraction |
| 02/13/2008 | EP1885994A1 A device for selective movement of well tools and also a method of using same |
| 02/13/2008 | EP1885990A2 Drill chuck |
| 02/13/2008 | CN201021607Y Spring supporting and positioning supporter |
| 02/13/2008 | CN201021606Y A device for preventing from oil well drop and suspender impact |
| 02/13/2008 | CN201021605Y Piston deviated friction preventive oil pumping pole |
| 02/12/2008 | US7328747 Integrated buoyancy joint |
| 02/12/2008 | CA2481732C Remote operated coil connector apparatus |
| 02/12/2008 | CA2412694C Drill rod holder |
| 02/12/2008 | CA2392277C Bottom hole assembly |
| 02/12/2008 | CA2376806C Tool string |
| 02/12/2008 | CA2304938C Slanted well enhanced extraction process for the recovery of heavy oil and bitumen using heat and solvent |
| 02/12/2008 | CA2244558C Method and apparatus for suppressing drillstring vibrations |
| 02/07/2008 | WO2008015540A2 Articulated extraction pipe |
| 02/07/2008 | WO2008015402A2 Running bore-lining tubulars |
| 02/07/2008 | US20080029306 Method for Improved Well Control With A Downhole Device |
| 02/07/2008 | US20080029269 Method and system for installing equipment for production and injection operations |
| 02/07/2008 | CA2659476A1 Running bore-lining tubulars |
| 02/06/2008 | CN201016279Y Pumping rod error-correcting abrasion-reducing rotary rolling coupling |
| 02/06/2008 | CN201016278Y Leading-in type geothermal well annular tube separator |
| 02/06/2008 | CN201016277Y Pumping rod hot-rolling round steel with fixing nails |
| 02/06/2008 | CN101120155A Integrated magnetic ranging tool |
| 02/06/2008 | CN101117884A Boring tool drag reduction device |
| 02/06/2008 | CN101117683A High-performance hydrogen sulfide corrosion resistant oil drill rocker and its heat treatment process |
| 02/06/2008 | CN100367637C Unipolar transversal flux machine has rotor module provided by rotor rings with outer teeth fitted around permanent magnet rings magnetized radially in opposite directions |
| 02/06/2008 | CN100366778C Steel in use for fire resistant, heat insulated oil line, and preparation method |
| 02/05/2008 | US7325633 Rock drill bit and a thread joint therefor |
| 02/05/2008 | US7325620 Recoverable, reinforced and vibration-damping plug used for cased wells |
| 02/05/2008 | US7325619 Sucker rod guide installer |
| 02/05/2008 | US7325609 Completion apparatus and methods for use in hydrocarbon wells |
| 02/05/2008 | CA2443528C Threaded joint for steel pipe |
| 02/03/2008 | CA2555023A1 Combined anti-rotation and flow control tool |
| 02/01/2008 | CA2554803A1 No turn tag bar and method of use of the same |
| 01/31/2008 | WO2007134416A3 Protective ducting and method for the installation of same |
| 01/31/2008 | US20080023192 Method and device to clamp control lines to tubulars |
| 01/30/2008 | EP1882874A1 Threaded joint for oil well pipe |
| 01/30/2008 | EP1882808A1 Flow restrictor coupling |
| 01/30/2008 | EP1882078A1 Rock drilling element, drill string and method for transferring impact energy from a top hammer unit to a drill bit |