| Patents for E21B 17 - Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings (27,800) |
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| 05/04/1983 | EP0077898A1 Methode for placing a conduit of pipes in the ground by pushing and pipe for use in such a method |
| 05/03/1983 | US4381821 Blast joint and protection element therefor |
| 04/27/1983 | EP0077336A1 An extension coupling for rock drilling equipment. |
| 04/26/1983 | CA1145447A1 Riser angle positioning system and process |
| 04/26/1983 | CA1145446A1 Electrical connector for borehole telemetry apparatus |
| 04/26/1983 | CA1145324A1 Composite heavy metal drill collar |
| 04/26/1983 | CA1145149A1 Variable stiffness lower joint for pipe riser with fixed bottom |
| 04/20/1983 | EP0077275A2 Pump-down stinger assembly method and apparatus |
| 04/19/1983 | US4380347 Well tool |
| 04/19/1983 | US4380264 Survey tool string |
| 04/14/1983 | WO1983001336A1 Well logging apparatus and method for making same |
| 04/12/1983 | US4379494 Replaceable drill stabilizer sleeve |
| 04/12/1983 | US4379493 Method and apparatus for preventing wireline kinking in a directional drilling system |
| 04/12/1983 | US4379471 Thread protector apparatus |
| 04/12/1983 | CA1144435A1 Hard surfacing for oil well tools |
| 04/05/1983 | US4378852 Wedge lock stabilizer |
| 03/29/1983 | US4378135 Drilling stabilizer with mechanically engaging and disengaging slips |
| 03/29/1983 | US4378057 Coupling structure for a compound drill stem |
| 03/22/1983 | US4377302 Threaded joint with high gas-leak-tightness for oil and gas well pipe |
| 03/16/1983 | EP0074317A2 Logging method and apparatus using a probe equipped with measuring pads |
| 03/16/1983 | EP0074171A1 Tool assembly |
| 03/15/1983 | US4376467 Seafloor diverter |
| 03/09/1983 | EP0073610A2 Method and apparatus for drilling a well bore |
| 03/01/1983 | US4375239 Acoustic subsea test tree and method |
| 03/01/1983 | CA1142168A1 Releasable drill string stabilizer |
| 03/01/1983 | CA1142167A1 Composite heavy metal drill collar |
| 02/22/1983 | US4374595 Metal to metal sealed joint for tubing string |
| 02/22/1983 | US4374530 Flexible production tubing |
| 02/17/1983 | WO1983000524A1 Drilling device |
| 02/16/1983 | EP0072072A1 Drilling device |
| 02/16/1983 | EP0071821A2 A tool shaft for a tool of the percussive and rotative type |
| 02/15/1983 | US4373754 Threaded connector |
| 02/15/1983 | US4373750 Joint for pipe intended for petroleum industry |
| 02/15/1983 | US4373592 Rotary drilling drill string stabilizer-cuttings grinder |
| 02/08/1983 | US4372622 Recirculating bearing antifriction system for well strings |
| 01/26/1983 | EP0070668A1 A flexible hose and method of supporting an elongate article, especially a cable, on this hose |
| 01/25/1983 | CA1140106A1 Apparatus and process for drilling underground arcuate paths and installing production casings, conduits, or flow pipes therein |
| 01/18/1983 | US4368789 Drilling apparatus |
| 01/18/1983 | US4368787 Arrangement for removing borehole cuttings by reverse circulation with a downhole bit-powered pump |
| 01/18/1983 | US4368786 Downhole drilling apparatus |
| 01/11/1983 | USRE31123 Pipe section and coupling |
| 01/11/1983 | US4367981 Fluid pressure-tensioned slip joint for drilling riser |
| 01/11/1983 | US4367797 Cable transfer sub for drill pipe and method |
| 01/04/1983 | US4367055 Subsea flowline connection yoke assembly and installation method |
| 12/28/1982 | US4365678 Tubular drill string member with contoured circumferential surface |
| 12/28/1982 | US4365677 Earth boring apparatus |
| 12/28/1982 | US4365506 Remotely operated downhole test disconnect switching apparatus |
| 12/28/1982 | CA1138490A1 Rotary shouldered connection modification |
| 12/21/1982 | US4364587 Safety joint |
| 12/21/1982 | US4364418 Flexible tubular conduit |
| 12/21/1982 | CA1137869A1 Diffuser for wellhead isolation tool |
| 12/15/1982 | EP0066891A2 Noise damping means for drilling rods |
| 12/14/1982 | US4363568 Conductors for a guyed tower and method for installing same |
| 12/14/1982 | US4363567 Multiple bore marine riser with flexible reinforcement |
| 12/14/1982 | US4363366 Screened hollow stem auger for use in well drilling and testing process |
| 12/14/1982 | US4363360 Apparatus for use in maintaining a well pipe centered within a well bore |
| 12/14/1982 | US4363233 Method and apparatus for cold forming stabilizer blade means from elongated members |
| 12/09/1982 | WO1982004233A1 Sea platform, particularly derrick platform and method for the assembly thereof |
| 12/07/1982 | US4362420 Device for mounting and removing a cutter at the end of the cutter shaft from a cutter dredge |
| 12/07/1982 | US4362217 Downhole shearers |
| 12/07/1982 | US4362215 Marine riser provided with a hinged foot for offshore hydrocarbon production |
| 12/07/1982 | US4362210 Friction hold wear bushing |
| 12/07/1982 | US4361937 Cable banding lock ring |
| 12/01/1982 | EP0065601A1 Constant bottom contact tool |
| 11/30/1982 | US4361353 Method and apparatus for retrieving wear bushings of various diameters |
| 11/30/1982 | US4361196 Roof bit coupling |
| 11/30/1982 | CA1136545A1 Buoyancy system for large scale underwater risers |
| 11/30/1982 | CA1136543A1 Metal to metal sealed joint for tubing string |
| 11/30/1982 | CA1136487A1 Composite sucker rod string and method of use thereof |
| 11/23/1982 | US4360288 Fiberglass sucker rod construction |
| 11/23/1982 | US4360226 Roll-flex connector |
| 11/16/1982 | US4359095 Well support system |
| 11/09/1982 | US4358511 Tube material for sour wells of intermediate depths |
| 11/03/1982 | EP0063911A2 Flow line for use in the transfer of fluid to or from under water sites |
| 11/02/1982 | US4357064 Equalizing electrical connection for inside a pipe |
| 11/02/1982 | US4356629 Method of making well logging apparatus |
| 10/28/1982 | WO1982003653A1 An extension coupling for rock drilling equipment |
| 10/27/1982 | EP0063444A1 Electrically driven submersible pump system |
| 10/26/1982 | US4355826 Containment skirt for drilling fluid |
| 10/26/1982 | US4355825 Mudline suspension system |
| 10/19/1982 | US4354561 Reciprocating drill bit |
| 10/19/1982 | US4354397 Sucker rod shock absorber |
| 10/19/1982 | US4354395 Shock absorption apparatus associated with well pump |
| 10/19/1982 | US4354379 Methods and apparatus for testing roundness and straightness of pipes and tubings |
| 10/12/1982 | CA1133538A1 Well tubing coupling apparatus |
| 10/05/1982 | CA1132900A1 Turning ring connector, particularly for a tube string used in offshore oil fied investigation of production |
| 09/30/1982 | WO1982003277A1 Point gap assembly for a toroidal coupled telemetry system |
| 09/22/1982 | EP0060549A1 Thread-type pipe connector |
| 09/21/1982 | US4350911 Tandem connected submersible oil well pump motors |
| 09/21/1982 | US4350204 Reamer |
| 09/14/1982 | US4349072 Method and apparatus for conducting logging or perforating operations in a borehole |
| 09/14/1982 | US4349050 Blast joint for subterranean wells |
| 09/14/1982 | US4349048 Pipe thread protector |
| 09/14/1982 | CA1131612A1 Non-rotating stabilizer for raise boring |
| 09/07/1982 | US4348672 Insulated drill collar gap sub assembly for a toroidal coupled telemetry system |
| 09/07/1982 | CA1131209A1 Wellbore drilling technique using eccentric tool joints to mitigate pressure-differential sticking |
| 08/31/1982 | US4346620 Shock absorbing means for a rocker arm type oil well pump |
| 08/31/1982 | US4346591 Sensing impending sealed bearing and gage failure |
| 08/31/1982 | CA1130781A1 Drill string shock absorbr with pressurized lubricant system |
| 08/31/1982 | CA1130780A1 Drill rod centering device |