| Patents for E21B 17 - Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings (27,800) |
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| 07/15/1986 | CA1207592A1 Sucker rod |
| 07/09/1986 | EP0186952A1 Method for drilling deviated wellbores |
| 07/08/1986 | US4598967 For a downhole tool |
| 07/08/1986 | US4598455 Hydril-type connector |
| 07/08/1986 | EP0173691A4 Pipe joint. |
| 07/02/1986 | EP0186599A2 Apparatus for electrically interconnecting multi-sectional well tools |
| 07/02/1986 | EP0186317A1 Casing high angle wellbores |
| 07/02/1986 | CN85102269A Ball geal serial small-diametered hard metal one-piece bot pick |
| 07/02/1986 | CA1206998A1 Journal bearing |
| 07/01/1986 | US4597688 Sucker rod assembly and method |
| 07/01/1986 | US4597438 Swivel bar apparatus for use with steel and other types of sucker rods |
| 06/24/1986 | US4596531 Device for lightening an undersea production riser by means of floating bodies |
| 06/24/1986 | US4596293 Targetable drill with pressure telemetering of drill parameters |
| 06/19/1986 | WO1986003570A1 An improved threaded pipe connection |
| 06/18/1986 | EP0184973A2 Supporting system for a riser |
| 06/17/1986 | US4595219 Gas tightly sealed joint in oil field tubular goods |
| 06/17/1986 | US4595058 Turbulence cementing sub |
| 06/17/1986 | US4595055 Centering apparatus |
| 06/17/1986 | CA1206248A1 Method and apparatus for seismic signal acquisition in a borehole |
| 06/17/1986 | CA1206090A1 Side pocket mandrel |
| 06/11/1986 | EP0184304A1 Method and system of drilling deviated wellbores |
| 06/11/1986 | EP0183816A1 Collar assembly for telemetry |
| 06/10/1986 | US4594020 Welded oil well pump rod |
| 06/10/1986 | US4593944 Pile driving connector |
| 06/10/1986 | US4593771 Tubing-conveyed external gauge carriers |
| 06/10/1986 | US4593758 Hermetically sealed insulating assembly |
| 06/10/1986 | CA1205837A1 Sleeve for lining a well wall and a tubular coupling therefor |
| 06/10/1986 | CA1205741A1 Pipe string tie-back connector |
| 06/10/1986 | CA1205738A1 Wire guard device for wells |
| 06/05/1986 | WO1986003275A1 Oilwell tubing connection |
| 06/05/1986 | WO1986003274A1 Oilwell tubing connector |
| 06/04/1986 | EP0183536A2 Non-magnetic steel having high corrosion resistance and high strength for use as material of drill collar, and drill collar made of the steel |
| 06/03/1986 | US4592426 In a fluid connection system |
| 06/03/1986 | US4592421 Sucker rods |
| 06/03/1986 | CA1205455A1 Drill string sub with self closing cable port valve |
| 06/03/1986 | CA1205376A1 Apparatus for, and a method of, signalling within a borehole while drilling |
| 05/27/1986 | US4591226 Annular electrical connectors for drill string |
| 05/27/1986 | US4591010 Coupling between a drill bit and a drill shaft |
| 05/27/1986 | US4591009 Drill soundproofing device |
| 05/27/1986 | US4591005 Drill rod opening device for sectional-rod drilling equipment |
| 05/27/1986 | CA1205068A1 Downhole tool with replaceable tool sleeve sections |
| 05/27/1986 | CA1205008A1 Electrode supporting conduit tube for electrical heating of underground hydrocarbon resources |
| 05/27/1986 | CA1205006A1 Submersible pump system |
| 05/27/1986 | CA1204992A1 Conduct pipe covered with electrically insulating material |
| 05/21/1986 | CN85202386U Automatic-drilling hydraulic shock absorber |
| 05/20/1986 | US4589796 Glass fiber sucker rod system |
| 05/20/1986 | US4589717 Repeatedly operable electrical wet connector |
| 05/20/1986 | US4589689 In a fluid connection system for a subsea well |
| 05/20/1986 | US4589483 Well tool |
| 05/20/1986 | US4589187 Method of manufacturing an insulating coupling for drill collars |
| 05/13/1986 | US4588951 Arm apparatus for pad-type logging devices |
| 05/13/1986 | US4588243 Downhole self-aligning latch subassembly |
| 05/13/1986 | US4588213 Threaded pipe connection |
| 05/10/1986 | CN85108013A Apparatus and method for driving casing or conductor pipe |
| 05/10/1986 | CN85107996A Screw-thread joint of steel pipe with sealing means |
| 05/09/1986 | WO1986002695A1 Device for connecting a boring line with a tube or similar item |
| 04/29/1986 | US4585374 High energy formed connections |
| 04/29/1986 | US4585368 Sucker rod assembly |
| 04/29/1986 | US4585287 Cable connector for use in downhole drilling and logging operations |
| 04/29/1986 | US4585062 Cold-deformed carbon or low-alloyed steel |
| 04/29/1986 | CA1203747A1 Outrigger arm displacement control mechanism and method |
| 04/23/1986 | EP0178988A1 Method and device for the make up of threaded tube joints with abutting shoulders |
| 04/23/1986 | EP0178709A1 Stabilizer |
| 04/22/1986 | US4584675 Method for transmitting data |
| 04/22/1986 | US4583604 Roller reamer with rotatably positioned bearing block |
| 04/22/1986 | US4583603 Drill pipe joint |
| 04/16/1986 | EP0178231A1 Threaded fitting for a steel pipe with a sealing means interposed between the threads |
| 04/15/1986 | US4582349 Plastically deformed seals in downhole tools |
| 04/15/1986 | US4582348 Pipe connector with varied thread pitch |
| 04/15/1986 | US4582090 Tubular member thread protector |
| 04/15/1986 | CA1203267A1 Screw coupling joint |
| 04/15/1986 | CA1203158A1 Vacuum insulated steam injection tubing |
| 04/15/1986 | CA1203098A1 Arrangement for supplying a pressurized liquid to a rotating machine part |
| 04/10/1986 | WO1986002137A1 Metal-to-metal wedge thread coupling connector |
| 04/10/1986 | WO1986002123A1 Method and device for screwing a threaded joint for a pipe, and provided with a stop |
| 04/10/1986 | CN85108215A Device and method for fastening screw-threaded pipe joints with locating means |
| 04/09/1986 | EP0177467A1 Drill steel |
| 04/09/1986 | EP0177209A2 Consolidation of a part from separate metallic components |
| 04/08/1986 | US4580642 Zero deviation drill bits |
| 04/02/1986 | CN85202216U Rod coupling for oil well sucker rods |
| 04/01/1986 | US4579180 Drilling bit |
| 04/01/1986 | US4578991 For maintaining stress cycle control to prevent down-hole failure |
| 04/01/1986 | CA1202578A1 Method of prestressing a tubular apparatus |
| 04/01/1986 | CA1202565A1 Tubular connection |
| 04/01/1986 | CA1202562A1 Fairing |
| 03/25/1986 | US4578675 Apparatus and method for logging wells while drilling |
| 03/25/1986 | US4578642 Method and apparatus for measuring velocity of ferromagnetic tubing |
| 03/25/1986 | US4577895 Pipe joint having pressure activated sealing means |
| 03/25/1986 | US4577892 Arrangement for supplying a pressurized liquid to a rotating machine part |
| 03/25/1986 | US4577703 Apparatus for making boreholes in the lateral walls of narrow underground mine workings |
| 03/25/1986 | US4577664 Enhanced oil recovery from tar sands |
| 03/18/1986 | US4576498 Assembly structure for a soil sampler |
| 03/18/1986 | US4576402 Locking pipe sub |
| 03/18/1986 | CA1201985A1 Tubular member |
| 03/12/1986 | EP0173922A1 Joint device in extension drill equipment for percussive drilling |
| 03/12/1986 | EP0173691A1 Pipe joint. |
| 03/11/1986 | US4575681 Insulating and electrode structure for a drill string |
| 03/11/1986 | US4575163 For a sucker rod |
| 03/11/1986 | CA1201708A1 Full-bore drill stem testing apparatus with surface pressure readout |
| 03/10/1986 | CN85107342A Drill steel |