| Patents for E21B 17 - Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings (27,800) |
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| 07/30/2008 | CN201092826Y Anti-drop sand-pumping rotary rope device |
| 07/30/2008 | CN101233292A Adjustable winged centering tool for use in pipes with varying diameter |
| 07/30/2008 | CN101230776A Axial vibration reduction anti-off tool for gas drilling |
| 07/30/2008 | CN101230574A Pile machine having drilling function and drilling static pressure method |
| 07/29/2008 | US7405188 Polymeric gel system and compositions for treating keratin substrates containing same |
| 07/29/2008 | US7404695 Seafloor-surface connecting installation of a submarine pipeline installed at great depth |
| 07/29/2008 | US7404444 Protective sleeve for expandable tubulars |
| 07/29/2008 | US7404438 Solid expandable tubular members formed from very low carbon steel and method |
| 07/29/2008 | CA2412153C Drilling and lining method using a spoolable tubing |
| 07/29/2008 | CA2407506C Expandable apparatus for drift and reaming a borehole |
| 07/29/2008 | CA2390345C Improved tubing containing electrical wiring insert |
| 07/29/2008 | CA2383150C Expandable downhole tubing |
| 07/24/2008 | WO2008070193A3 Perforating gun assembly with auger to control wellbore fluid dynamics |
| 07/24/2008 | WO2008070038B1 Expandable reamers for earth-boring applications and methods of using the same |
| 07/24/2008 | WO2008067154A3 Expandable wellbore liner |
| 07/24/2008 | WO2008064233A3 Perforating gun assembly with auger to control wellbore fluid dynamics |
| 07/23/2008 | EP1947290A2 Riser with axially offset dog-type connectors |
| 07/23/2008 | EP1945902A1 Device for controlling slugging |
| 07/23/2008 | CN201090201Y Antisepsis fire resistant heat insulation pipe |
| 07/23/2008 | CN201090186Y Three-low oil-layer picking-divide synchronization pumping tubing string |
| 07/23/2008 | CN201090151Y Sucker rod clamping centralizer |
| 07/23/2008 | CN201090150Y Pumping rod double-acting centralizer |
| 07/23/2008 | CN201090149Y Pumping rod multifunctional protector |
| 07/23/2008 | CN201090148Y Pumping well polished rod shock-absorbing device |
| 07/23/2008 | CN201090147Y Double-walled hexagonal kelly protection connector |
| 07/23/2008 | CN201090146Y Connecting apparatus for new type expansion tube |
| 07/23/2008 | CN201090145Y Doff-proof connecting-tripping device |
| 07/23/2008 | CN201090144Y Inclined plane jack-in type closing joint connecting inner tube |
| 07/23/2008 | CN201090135Y Combined drilling tool |
| 07/23/2008 | CN100404784C Glass fiber reinforced plastic centralizer |
| 07/22/2008 | US7402001 Seafloor-surface coupling device |
| 07/22/2008 | US7401668 Single cone rock bit having inserts adapted to maintain hole gage during drilling |
| 07/22/2008 | CA2506458C Recoverable, reinforced and vibration-damping plug used for cased wells |
| 07/22/2008 | CA2484537C Telemetry downhole system and method |
| 07/22/2008 | CA2468895C Downhole tool retention apparatus |
| 07/22/2008 | CA2466606C Riser pipe gas separator for well pump |
| 07/22/2008 | CA2380286C Mechanism for dropping a plurality of balls into tubulars used in drilling, completion and workover of oil, gas and geothermal wells, and method of using same |
| 07/16/2008 | EP1944463A1 Spoolable connector |
| 07/16/2008 | EP1944462A2 Mitigation of localized stress in tubulars |
| 07/16/2008 | CN201087706Y Casing shoe for casing tube well drilling |
| 07/16/2008 | CN201087705Y Positioning pin device of non-rotating low-torque reduction device used for petroleum well drilling |
| 07/16/2008 | CN201087704Y Drilling tool stabilizer for gas drilling |
| 07/16/2008 | CN201087703Y Sticking buckle resistant petroleum case pipe joint |
| 07/16/2008 | CN201087694Y Safe and reliable long-life screw drill |
| 07/16/2008 | CN101223368A A manual locking assembly for a quick connect coupling |
| 07/16/2008 | CN101220732A Reduction-resistant vibration-damping break-proof righting coupling for gas drilling |
| 07/16/2008 | CN101220731A Thin wall drilling rod, drilling column and its preparation method and application |
| 07/16/2008 | CN100402371C Riser installation vessel and method of using the same |
| 07/15/2008 | US7400263 Method and system for performing operations and for improving production in wells |
| 07/15/2008 | US7398822 Downhole connection system |
| 07/15/2008 | CA2481757C Well tool protection system and method |
| 07/15/2008 | CA2456899C Telescopable boring rod mechanism |
| 07/15/2008 | CA2423232C Improved well testing system |
| 07/15/2008 | CA2408975C Device for sealing a bore hole and discharging drill cuttings and stripped excavation material |
| 07/15/2008 | CA2381212C Anti-rotation device for use with well tools |
| 07/10/2008 | WO2008083016A2 Sensing tool |
| 07/10/2008 | US20080165011 Electronic Id Tag and Co-Operating Antenna |
| 07/10/2008 | US20080164019 Well string centralizer and method of forming |
| 07/10/2008 | US20080164018 Downhole Device |
| 07/10/2008 | CA2671548A1 Sensing tool |
| 07/09/2008 | EP1556576B1 Drill pipe having an internally coated electrical pathway |
| 07/09/2008 | EP1463870B1 System and method for lessening impact on christmas trees during downhole operations involving christmas trees |
| 07/09/2008 | EP1365183B1 Threaded joint for steel pipe with excellent seizure and corrosion resistances |
| 07/09/2008 | CN201083100Y Casing milling salvaging adaptor for oil well |
| 07/09/2008 | CN201083089Y Self-correcting multifunctional abrasion-proof pumping rod centralizer |
| 07/09/2008 | CN201083088Y Bushing abrasion-reducing equipment |
| 07/09/2008 | CN201083087Y Inclined well and horizontal well pumping rod deflected-abrasion-resisting universal connector |
| 07/09/2008 | CN201083086Y Drilling rod jointing device |
| 07/09/2008 | CN201083085Y Drilling rod without welding down-the-hole drill |
| 07/09/2008 | CN101218414A Method and installation for connecting a rigid submarine pipeline and a flexible submarine pipeline |
| 07/09/2008 | CN101215957A Rolling friction type boring machine sliding bush |
| 07/09/2008 | CN101215956A Oil conduit wear prevention device |
| 07/09/2008 | CN101215954A High sealing property screw drill driving-shaft assembly |
| 07/09/2008 | CN100400953C Means for connecting pipes and compressing pipe joints |
| 07/09/2008 | CN100400793C Methods and systems for heating a hydrocarbon containing formation in situ with an opening contacting the earth's surface at two locations |
| 07/09/2008 | CN100400792C Shoe for expandable liner system |
| 07/08/2008 | US7396216 Submersible pump assembly for removing a production inhibiting fluid from a well and method for use of same |
| 07/08/2008 | US7395882 Casing and liner drilling bits |
| 07/08/2008 | US7395881 Roller subs |
| 07/08/2008 | US7395866 Method and apparatus for blow-out prevention in subsea drilling/completion systems |
| 07/08/2008 | CA2420660C Rock drilling apparatus |
| 07/08/2008 | CA2381711C Threaded pipe connection |
| 07/08/2008 | CA2308667C Hydraulically releasable coupling device |
| 07/03/2008 | US20080156488 Downhole Tools |
| 07/02/2008 | EP1937931A1 A device for cleaning and doping equipment for threads |
| 07/02/2008 | EP1937930A1 Separating device |
| 07/02/2008 | CN201080793Y Long spiral mud jacking bore rod |
| 07/02/2008 | CN201080792Y High intensity abrasion-proof drill |
| 07/02/2008 | CN201080791Y Pumping rod centralizing wheel hoop type roller joint |
| 07/02/2008 | CN201080790Y Oil pumping rod safe disengagement joint |
| 07/02/2008 | CN201080789Y Corrosion resistant bore rod |
| 07/02/2008 | CN101210480A Four-in-one drilling tool |
| 07/01/2008 | US7393158 Shrink for centralizer assembly and method |
| 07/01/2008 | US7392861 Stabilizer for a rod, particularly a string of drilling rods |
| 06/26/2008 | WO2008076697A2 A radial spring latch apparatus and methods for making and using same |
| 06/26/2008 | WO2008075965A1 Umbilical |
| 06/26/2008 | WO2008075964A1 Power umbilical |
| 06/26/2008 | WO2008075238A1 System and method for sensing a parameter in a wellbore |
| 06/26/2008 | CA2672662A1 A radial spring latch apparatus and methods for making and using same |
| 06/26/2008 | CA2671947A1 System and method for sensing a parameter in a wellbore |