| Patents for E21B 17 - Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings (27,800) |
|---|
| 08/05/1980 | US4215882 Joint structure |
| 08/05/1980 | CA1083133A1 Heat shield for a drill string shock absorbing apparatus |
| 07/29/1980 | US4215426 Telemetry and power transmission for enclosed fluid systems |
| 07/29/1980 | US4214693 Method of making wireline apparatus for use in earth boreholes |
| 07/29/1980 | CA1082684A2 Method and apparatus for roof drilling |
| 07/29/1980 | CA1082683A1 Method and apparatus for roof drilling |
| 07/22/1980 | US4213720 Tensioning of members |
| 07/22/1980 | US4213485 Hose |
| 07/22/1980 | CA1082247A1 Pipe section and coupling |
| 07/22/1980 | CA1082104A1 Steam distribution system for use in a well |
| 07/15/1980 | US4212359 Downhole weight control device for impact rock drilling tool |
| 07/15/1980 | CA1081683A1 Pre-formed wear pads for drill stabilizers |
| 07/08/1980 | US4211440 Compensated blast joint for oil well production tubing |
| 07/08/1980 | US4211290 Drilling string shock-absorbing tool |
| 07/01/1980 | US4210316 Drill string shock absorber with improved pin type torque transmission means |
| 07/01/1980 | US4210208 Subsea choke and riser pressure equalization system |
| 07/01/1980 | CA1080690A1 Raise drill |
| 06/26/1980 | WO1980001300A1 Hydraulically-driven downhole drill |
| 06/24/1980 | US4209193 Rigid connector for large diameter pipe |
| 06/17/1980 | US4207925 Reversible baffle plate |
| 06/17/1980 | US4207756 Tension shock absorber device |
| 06/10/1980 | US4206821 Roof drill and drill rod system |
| 06/10/1980 | US4206808 Safety centering basket |
| 06/10/1980 | CA1079261A1 Drilling stabilizer including mechanical interlock and disengagement device |
| 06/03/1980 | US4205926 Sucker rod and coupling therefor |
| 06/03/1980 | CA1078819A1 Reamer bit for raise boring |
| 06/03/1980 | CA1078818A1 Raise drill with removable stem |
| 06/03/1980 | CA1078645A1 Tubular member straightening, descaling and hydraulic testing apparatus |
| 05/28/1980 | EP0011219A1 Connection of fluid flow path-defining components in down-the-hole hammer drills |
| 05/27/1980 | US4204739 Submersible electric motor and electrical connector assembly |
| 05/27/1980 | CA1078368A1 Downhole connector for use with drill string telemetering system |
| 05/20/1980 | CA1077830A1 Apparatus for testing earth formations |
| 05/13/1980 | US4202417 Raise drill with elastomeric load absorbing means |
| 05/06/1980 | CA1077019A1 Raise drill inner yoke bridge |
| 04/29/1980 | US4200312 Subsea flowline connector |
| 04/29/1980 | US4200297 Side entry clamp and packoff |
| 04/29/1980 | US4199858 Method for automatically lubricating pipe joint |
| 04/22/1980 | US4199210 Automatic coupling and decoupling apparatus |
| 04/22/1980 | US4199011 Sleeve for drill pipes |
| 04/22/1980 | CA1076100A2 Hot hole vibration dampener |
| 04/17/1980 | WO1980000727A1 Improvements in and relating to electrical power transmission in fluid wells |
| 04/15/1980 | US4198179 Production riser |
| 04/08/1980 | US4196783 Device for boring |
| 04/08/1980 | US4196781 Telescoping joint |
| 04/02/1980 | EP0009398A1 Thread structure for percussion drill elements |
| 04/01/1980 | US4196334 Method for assembling vertical ducts by electron-welding |
| 04/01/1980 | US4195701 Raise drill having water passages directed toward the roller cutters |
| 04/01/1980 | US4195691 Composite sucker rod string and method of use thereof |
| 03/25/1980 | US4194582 Double acting shock absorbers for drill strings |
| 03/25/1980 | US4194581 Deep drill hammer |
| 03/25/1980 | US4194568 Disconnectable riser columns for under water oil wells |
| 03/25/1980 | US4194567 Method and apparatus for balancing pressures in an oil well |
| 03/25/1980 | US4194561 Placement apparatus and method for low density ball sealers |
| 03/25/1980 | CA1074414A1 Submersible pipe electrical cable assembly |
| 03/25/1980 | CA1074364A1 Oil well tube fittings |
| 03/25/1980 | CA1074292A1 Method and apparatus for telemetering information from a borehole to the surface |
| 03/18/1980 | US4194031 Method of prolonging the life of a tool joint means |
| 03/18/1980 | US4193657 Electrical cable termination |
| 03/18/1980 | US4193455 Split stack blowout prevention system |
| 03/18/1980 | CA1073807A1 Method and apparatus for maintaining electric cable inside drill pipe |
| 03/11/1980 | US4192533 Dovetail connection for pin and box joints |
| 03/11/1980 | US4192380 Method and apparatus for logging inclined earth boreholes |
| 03/11/1980 | US4192155 Floating cushion sub |
| 03/04/1980 | US4191492 Method of installing a liner in a large diameter borehole |
| 02/26/1980 | US4190128 Roof drill bit with hexagonal body portion |
| 02/26/1980 | US4190126 Cemented tungsten carbide chips |
| 02/26/1980 | US4190124 Stabilizer and blade attachment means therefor |
| 02/26/1980 | US4190123 Rock drill bit loading device |
| 02/26/1980 | US4190122 Spaced weight relieved drill collar string |
| 02/26/1980 | US4190112 Pump down wipe plug and cementing/drilling process |
| 02/26/1980 | US4190111 Well cementing/plug drilling apparatus and improved cementing and drilling process |
| 02/19/1980 | US4189013 Roof drill bit |
| 02/19/1980 | US4189012 Earth boring tool |
| 02/12/1980 | US4188156 Riser |
| 02/12/1980 | US4187918 Down-hole earth drilling motor capable of free circulation |
| 02/12/1980 | CA1071530A1 Method and apparatus for running and retrieving logging instruments in highly deviated well bores |
| 02/12/1980 | CA1071529A1 Method and apparatus for running and retrieving logging instruments in highly deviated well bores |
| 02/06/1980 | EP0007825A2 Underwater drilling method and apparatus relating thereto |
| 02/05/1980 | US4186569 Dual spring drill string shock absorber |
| 01/29/1980 | US4185856 Pipe joint with remotely operable latch |
| 01/29/1980 | US4185704 Directional drilling apparatus |
| 01/29/1980 | US4185694 Marine riser system |
| 01/29/1980 | US4185665 Apparatus for the protection of tubes particularly tubes for drilling petroleum |
| 01/22/1980 | CA1070292A1 Hot hole vibration dampener |
| 01/22/1980 | CA1070238A1 Low heat conductive frangible centralizers |
| 01/15/1980 | US4183562 Marine riser conduit section coupling means |
| 01/15/1980 | US4183556 Liquid filled flexible sealing joint |
| 01/15/1980 | CA1069881A1 Thread for high torque joint |
| 01/08/1980 | US4182584 Marine production riser system and method of installing same |
| 01/08/1980 | US4182537 Anti-friction sucker rod guide assembly |
| 01/08/1980 | CA1069494A1 Floating cushion sub |
| 01/08/1980 | CA1069432A1 Multiple arm pad instrument for logging highly deviated boreholes |
| 01/01/1980 | US4181468 Geothermal energy pump monitor and telemetric system |
| 01/01/1980 | US4181184 Soft-wire conductor wellbore telemetry system and method |
| 12/25/1979 | US4180463 Self-cleaning helical spring filter and methods |
| 12/18/1979 | US4179001 Underground drilling and casing method and apparatus |
| 12/18/1979 | CA1068253A1 Drilling shock sub |
| 12/11/1979 | US4178579 Remote instrumentation apparatus |
| 12/11/1979 | US4178110 Liner for large diameter borehole |
| 12/11/1979 | CA1067970A1 Electrical two-way transmission system for tubular fluid conductors and method of construction |