| Patents for E21B 17 - Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings (27,800) |
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| 02/12/2003 | CN2535546Y Spiral column-shape righting device of beaming-rod |
| 02/12/2003 | CN2535545Y Anti-partial-wear beaming rod connection hoop |
| 02/12/2003 | CN2535544Y Solid beaming-rod of special welding |
| 02/12/2003 | CN1396372A Quickly assembled centralizer of screw pump |
| 02/11/2003 | US6517289 Inflatable vibration reducing fairing |
| 02/11/2003 | US6517125 Cementing head |
| 02/11/2003 | US6516904 Mining drill steels and methods of making the same |
| 02/11/2003 | US6516903 Drill bit stabilizer device |
| 02/11/2003 | US6516900 Apparatus for directional drilling |
| 02/11/2003 | US6516880 System, method and apparatus for deploying a data resource within a threaded pipe coupling |
| 02/11/2003 | US6516878 Downhole tension swivel sub |
| 02/11/2003 | US6516877 Sucker rod protector |
| 02/11/2003 | US6516861 Method and apparatus for injecting a fluid into a well |
| 02/06/2003 | WO2003010411A2 Method and apparatus for air can vent systems |
| 02/06/2003 | WO2002077496A3 Metal-to-metal seal with soft metal insert |
| 02/06/2003 | US20030028356 Oilfield equipment identification method and apparatus |
| 02/06/2003 | US20030026663 Method of dimensioning a drilling riser |
| 02/06/2003 | US20030024742 Steerable downhole tools |
| 02/06/2003 | US20030024710 Bi-directional grip mechanism for a wide range of bore sizes |
| 02/06/2003 | US20030024708 Structral support |
| 02/06/2003 | US20030024707 Casing centralizer |
| 02/06/2003 | US20030024704 Use of downhole high pressure gas in a gas-lift well |
| 02/05/2003 | EP1281905A1 Method of tightening pipe joint |
| 02/05/2003 | EP1281834A1 BI-Directional grip mechanism for a wide range of bore sizes |
| 02/05/2003 | CN2534358Y Helicoid drill seal ball hinge joint multiple direction shaft |
| 02/05/2003 | CN2534357Y Helicoid drill seal pin joint multiple direction shaft |
| 02/05/2003 | CN2534356Y Sucker pole coupling centralizer |
| 02/05/2003 | CN2534355Y Sucker pole centralizer |
| 02/05/2003 | CN2534354Y Bias wear protecting borehole centralizer |
| 02/05/2003 | CN2534353Y Joint capable of intensifing bit impact force |
| 02/05/2003 | CN1395022A Ground remote control adjustable bent sub |
| 02/05/2003 | CN1100698C Device for loading ships at sea |
| 02/04/2003 | US6515592 Power and signal transmission using insulated conduit for permanent downhole installations |
| 02/04/2003 | US6513840 Drill rod coupling |
| 02/04/2003 | US6513597 Method for installing a water well pump |
| 02/04/2003 | US6513593 Method and apparatus for reducing paraffin and asphaltene deposits in pumping oil wells |
| 02/04/2003 | US6513223 Method for installing a centralizer retaining collar and outer sleeve |
| 01/30/2003 | WO2003008763A1 Connecting an anchoring rod to a drilling tool |
| 01/30/2003 | WO2003008755A2 Wear resistant tubular connection |
| 01/30/2003 | WO2003008754A1 Steerable rotary drill bit assembly with pilot bit |
| 01/30/2003 | WO2001073331A3 Coiled tubing connector |
| 01/30/2003 | US20030021635 Method and apparatus for air can vent systems |
| 01/30/2003 | US20030021634 Keel joint arrangements for floating platforms |
| 01/30/2003 | US20030019639 Completion apparatus and methods for use in wellbores |
| 01/30/2003 | US20030019637 Method for preparing casing for use in a wellbore |
| 01/30/2003 | US20030019628 Bottom hole assembly |
| 01/30/2003 | US20030019624 Wire guard device for wells |
| 01/29/2003 | EP1278931A1 Centralizer for wireline tools |
| 01/29/2003 | CN1393632A Airlifting ball and airlifting pipe column structure for oil well and its design scheme |
| 01/28/2003 | US6511102 Pipe connector |
| 01/28/2003 | US6510905 Earth boring apparatus |
| 01/28/2003 | US6510899 Time-delayed connector latch |
| 01/23/2003 | WO2003006789A1 Expandable wellbore stabiliser |
| 01/23/2003 | WO2003006784A1 Roller sub |
| 01/23/2003 | WO2003006783A1 Riser system for water intake |
| 01/23/2003 | WO2002090710A3 Packer with lateral feed-through connection |
| 01/23/2003 | WO2002060749A3 Buoyancy module with external frame |
| 01/23/2003 | US20030015324 Method for installing a water well pump |
| 01/23/2003 | US20030015318 Roller subs |
| 01/23/2003 | CA2453047A1 Expandable wellbore stabiliser |
| 01/22/2003 | EP1276953A1 Expandable apparatus for drift and reaming a borehole |
| 01/22/2003 | CN2532240Y Quick assembling anchoring-bolt and drilling rod thereof |
| 01/22/2003 | CN2532227Y Deviation control tool for gone off hole |
| 01/22/2003 | CN2532226Y Rotary device for oil pump rod |
| 01/22/2003 | CN2532225Y Block-resistant drill rod |
| 01/22/2003 | CN1392326A Rock drill |
| 01/21/2003 | US6508311 Apparatus, system and method for installing and retrieving pipe in a well |
| 01/18/2003 | CA2353249A1 Pipe centralizer and method of attachment |
| 01/16/2003 | WO2003004826A1 Insulating device and assembly |
| 01/16/2003 | US20030010540 Centraliser |
| 01/16/2003 | US20030010539 Drill steel for drilling mine roofs |
| 01/16/2003 | US20030010538 Earth borer |
| 01/16/2003 | US20030010503 Method for preventing critical annular pressure buildup |
| 01/16/2003 | CA2455396A1 Insulating device and assembly |
| 01/16/2003 | CA2353160A1 Robotic proboscis pipeline apparatus |
| 01/15/2003 | EP1275814A1 Fixation of supply conduits with subsurface drive |
| 01/15/2003 | EP0983419B1 Marine riser |
| 01/15/2003 | CN2531100Y Short piece movable nylon paraffin cutting centralizer for sucker rod |
| 01/15/2003 | CN2531099Y Connecting-tripping device for oil well pump |
| 01/15/2003 | CN1391024A Join hoop type centralizer of sucker rod |
| 01/15/2003 | CN1391023A Variable-thread connecting hoop |
| 01/15/2003 | CN1391022A Ultrahigh-strength sleeved petroleum pipe with special jointer for resisting squeeze and its making method |
| 01/15/2003 | CN1391021A Sleeved petroleum pipe resisting CO2 corrosion and its making method |
| 01/15/2003 | CN1391020A Medium-strength sleeved petroleum pipe for hot recovery well of thick oil and its making method |
| 01/14/2003 | US6505682 Controlling production |
| 01/09/2003 | WO2003002850A1 Measurement device and support for use in a well |
| 01/09/2003 | WO2003002842A1 Centering device |
| 01/09/2003 | WO2003002840A2 Improved stabilizer for use in a drill string |
| 01/09/2003 | US20030008577 Buoyancy control systems for tubes |
| 01/08/2003 | CN2530020Y Sucker rod anti-dropout appts. |
| 01/08/2003 | CN2530019Y Rotary tailpipe hanging device |
| 01/08/2003 | CN1389639A Immobile well cylinder pile for stratum-shifting oil exploitation and its implementation |
| 01/08/2003 | CN1098403C Rotating connector with compensating unit |
| 01/07/2003 | CA2059568C Insulating composition |
| 01/03/2003 | WO2003001024A1 High strength metal sucker rod coupling |
| 01/03/2003 | WO2003001023A1 Electrical conducting system |
| 01/03/2003 | CA2442802A1 High strength metal sucker rod coupling |
| 01/02/2003 | US20030000705 Seafloor-surface linking device comprising a stabilising element |
| 01/02/2003 | US20030000607 Centering device |
| 01/02/2003 | EP1271037A1 Slim type oil well pipe fitting |