| Patents for E21B 17 - Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings (27,800) |
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| 09/12/1989 | US4865364 Conical thread form |
| 09/12/1989 | US4865356 Composite material tubular member joint |
| 09/12/1989 | US4865138 Drill string stabilizer |
| 09/12/1989 | US4865128 Gravel packing system for a production radial tube |
| 09/12/1989 | CA1259303A1 Spiralling tapered slip-on drill string stabilizer |
| 09/12/1989 | CA1259213A1 Cable connector assembly |
| 09/08/1989 | WO1989008214A1 Well tubing liner system |
| 09/07/1989 | DE3806407A1 Arrangement for producing soil sections compacted with the addition of binding or sealing agents |
| 09/07/1989 | DE3805657A1 Drilling tool with interchangeable conveying helix |
| 09/06/1989 | EP0330769A1 Tubular joint with seal, method for repairing seal, and repair part insert |
| 09/05/1989 | US4863311 Lining for bore holes in salt domes |
| 09/05/1989 | US4862976 Spline drive for percussion drilling tool |
| 09/05/1989 | US4862974 Downhole drilling assembly, apparatus and method utilizing drilling motor and stabilizer |
| 09/05/1989 | US4862965 Threadless well tool and method of making |
| 09/05/1989 | US4862958 Coil tubing fluid power actuating tool |
| 08/31/1989 | DE3805160A1 Process for the underground connection of a product pipe to a collector, in particular in the region in which it is not possible to walk |
| 08/30/1989 | EP0330584A1 Divice for transferring fluids between the sea bottom and the surface |
| 08/30/1989 | EP0329990A1 Oil-well tubing joints with anti-corrosive coating |
| 08/30/1989 | CN2043664U Casing centralising device against deformation with two centralising rings |
| 08/29/1989 | US4862090 Measuring pad arrangement for a logging sonde |
| 08/29/1989 | US4861209 Threaded coupling |
| 08/29/1989 | US4861074 Tubing collar |
| 08/29/1989 | US4860838 Latching bit sub |
| 08/29/1989 | US4860656 Joining metal tubes in a liquid environment |
| 08/24/1989 | DE3828481A1 Vorrichtung zum einzementieren eines gehaeusestranges in einem bohrloch Apparatus for Cement in a gehaeusestranges in a borehole |
| 08/23/1989 | EP0329262A2 Adjustable stabiliser for use in drilling string |
| 08/23/1989 | CN2043269U Hoop-spring type power clamp head braking mechanism |
| 08/23/1989 | CN2043268U Concentric air lift reverse cyclic system of drilling machine |
| 08/23/1989 | CN1034974A Stabilizer for drill stem |
| 08/23/1989 | CN1034973A Method of isolation of troublesorne zones in well with profile patch liners |
| 08/22/1989 | US4859200 Downhole electrical connector for submersible pump |
| 08/22/1989 | US4858705 Assembly for making oriented bore-holes |
| 08/22/1989 | US4858703 Self-propelled subsoil penetrating tool system |
| 08/22/1989 | US4858688 Sucker rod guide |
| 08/16/1989 | EP0328244A1 A drilling tool |
| 08/16/1989 | EP0327661A1 Tool for aiding the fitting of a drill stabilizer to a drill collar |
| 08/16/1989 | CN2042880U Diversion adapter |
| 08/15/1989 | US4856827 Resilient ball joint support |
| 08/15/1989 | US4856601 Drill bit with flow control means |
| 08/15/1989 | US4856591 Method and apparatus for completing a non-vertical portion of a subterranean well bore |
| 08/15/1989 | CA1258476A1 Pipe connector |
| 08/10/1989 | WO1989007178A1 Method and device for trench-free laying of pipelines |
| 08/08/1989 | US4854886 Electrical penetrator for hot, high pressure service |
| 08/08/1989 | US4854781 Variable rigidity element for transfer column foot |
| 08/08/1989 | US4854403 Stabilizer for deep well drilling tools |
| 08/08/1989 | US4854399 Tubular element for use in a rotary drilling assembly |
| 08/08/1989 | CA1258262A1 Apparatus and method for forming an anlarged underground arcuate bore and installing a conduit therein |
| 08/01/1989 | US4852670 Drilling tool with an exchangeable feed helix |
| 08/01/1989 | US4852668 Hydraulic drilling apparatus and method |
| 08/01/1989 | US4852667 Pressure relief process for well-drilling |
| 08/01/1989 | US4852655 Tubing coupling and method |
| 08/01/1989 | US4852648 Well installation in which electrical current is supplied for a source at the wellhead to an electrically responsive device located a substantial distance below the wellhead |
| 07/27/1989 | WO1989006739A1 Method of constructing a well |
| 07/27/1989 | WO1989006737A1 A drilling tool |
| 07/26/1989 | EP0325338A2 Cable head shock isolation assembly |
| 07/26/1989 | EP0325272A2 Drill bit with improved steerability |
| 07/26/1989 | EP0203003B1 Remotely-controlled assembling device for two items |
| 07/26/1989 | CN1034242A Insert type spring sleeve joint device for drill rods |
| 07/26/1989 | CN1004895B Telecontrolled operating device |
| 07/25/1989 | US4852069 Thin bed evaluation device |
| 07/25/1989 | US4850440 Method and device for making a hole in the ground |
| 07/25/1989 | CA1257794A1 Fiber optic connector assembly |
| 07/19/1989 | EP0324442A1 Elliptical thread design |
| 07/19/1989 | EP0324150A1 Drilling tool |
| 07/18/1989 | US4848490 Downhole stabilizers |
| 07/18/1989 | US4848488 Method and device for adjusting the path of a drilling tool fixed to the end of a set of rods |
| 07/18/1989 | US4848480 Method and apparatus for wire line protection in a well |
| 07/18/1989 | US4848455 Flexible drill rod feeding apparatus for quick rotary deep drilling |
| 07/18/1989 | CA1257629A1 Threaded pipe connection |
| 07/18/1989 | CA1257539A1 Flexible production riser assembly |
| 07/13/1989 | WO1989006330A2 Tubular connection having a variable metal-to-metal seal width |
| 07/13/1989 | DE3801824C1 Method and apparatus for the trenchless laying of supply lines |
| 07/12/1989 | EP0323772A1 Drill string stabilizer with a clutch for rotation |
| 07/11/1989 | US4846508 Tubular connector system |
| 07/11/1989 | US4846507 Casing connector |
| 07/11/1989 | US4846270 Trash barrier tool for wells |
| 07/11/1989 | US4846269 Apparatus for monitoring a parameter in a well |
| 07/04/1989 | US4844516 Connector for coil tubing or the like |
| 07/04/1989 | US4844511 Tubular connector |
| 07/04/1989 | US4844510 Tubular connector |
| 07/04/1989 | US4844197 Hydraulic release system for use in a borehole apparatus |
| 07/04/1989 | US4844186 Replaceable well drill bit |
| 07/04/1989 | US4844184 Lock device for hollow stem augers |
| 07/04/1989 | US4844183 Accelerator for fishing jar with hydrostatic assist |
| 07/04/1989 | US4844182 Method for improving drill cuttings transport from a wellbore |
| 07/04/1989 | US4844181 Floating sub |
| 07/04/1989 | US4844179 Drill string stabilizer |
| 07/04/1989 | US4844178 Drilling device having a controlled path |
| 07/04/1989 | US4844157 Jar accelerator |
| 07/04/1989 | US4843896 Probe for internal bore inspection |
| 06/27/1989 | US4842207 Device for detecting and measuring the tension on a cable |
| 06/27/1989 | US4842083 Drill bit stabilizer |
| 06/27/1989 | US4842082 Variable outside diameter tool for use in pikewells |
| 06/27/1989 | US4842059 Flex joint incorporating enclosed conductors |
| 06/27/1989 | CA1256326A1 Unitized tlp anchor template with elevated well template |
| 06/21/1989 | EP0321381A1 Tubular connector system |
| 06/21/1989 | CN2039736U Anti-deflection wearing device for roll type pumping rod |
| 06/21/1989 | CN2039735U 快速接头 Quick Connector |
| 06/20/1989 | CA1340026E Tubular connection |
| 06/20/1989 | CA1256144A1 Tubular connection |