| Patents for E21B 17 - Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings (27,800) |
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| 10/02/1985 | EP0156612A2 Improved pressure balanced seal |
| 10/01/1985 | US4543998 Protector clamp for well control lines |
| 10/01/1985 | EP0122932A4 Well logging sleeve and method for making same. |
| 09/24/1985 | US4543019 Boring tool |
| 09/24/1985 | US4542846 Method of producing a multiple-wall pipe structure with anticorrosion end protection |
| 09/24/1985 | CA1194055A1 Pipe joint |
| 09/24/1985 | CA1193913A1 Electrically driven submersible pump system |
| 09/17/1985 | US4541782 Pump system |
| 09/17/1985 | US4541481 For use with a well tester |
| 09/17/1985 | CA1193591A1 Locking device for a tool with telescopically displaceable parts |
| 09/10/1985 | US4540941 Casing collar indicator for operation in centralized or decentralized position |
| 09/10/1985 | US4540314 Tension leg means and method of installing same for a marine platform |
| 09/10/1985 | US4540200 Rock drill |
| 09/10/1985 | CA1193187A1 Multiterminators for riser pipes |
| 09/04/1985 | EP0153315A1 Tubular member thread protector |
| 09/03/1985 | US4538838 Method and apparatus of sealing threaded sections of a well tool |
| 09/03/1985 | US4538442 Method of prestressing a tubular apparatus |
| 09/03/1985 | US4538339 Method of making a sucker rod assembly |
| 09/03/1985 | US4538337 Method of mechanically prestressing a tubular apparatus |
| 09/03/1985 | CA1192752A1 Well support system |
| 08/29/1985 | WO1985003757A1 Pipe joint |
| 08/28/1985 | EP0153224A1 Procedure and device for determining the fastening torque of a tubular joint provided with a conical screwthread and a fastening limit stop, usable in the petrol industry |
| 08/28/1985 | EP0046800B1 Riser angle positioning system and process |
| 08/27/1985 | US4537457 Connector for providing electrical continuity across a threaded connection |
| 08/27/1985 | US4537429 Tubular connection with cylindrical and tapered stepped threads |
| 08/27/1985 | US4537428 Joint and joint components for pipe sections subjected to axial compression loads |
| 08/27/1985 | US4537406 Method for providing a gas and fluid-tight seal for a joint |
| 08/14/1985 | EP0151548A1 Drill bit for combined rotary and high pressure jet drilling |
| 08/14/1985 | EP0151365A2 Pre-set torque limiter sub |
| 08/13/1985 | US4534585 For flowlines or well casings subjected to reversible rotation |
| 08/13/1985 | US4534424 Retrievable telemetry system |
| 08/13/1985 | US4534421 Tool assembly |
| 08/13/1985 | US4534414 Hydraulic control fluid communication nipple |
| 08/13/1985 | CA1191744A1 Conduct pipe covered with electrically insulating material |
| 08/07/1985 | EP0150657A2 Tubular connection having a parallel chevron thread |
| 08/06/1985 | US4533405 Tubular high strength low alloy steel for oil and gas wells |
| 08/06/1985 | US4532990 Isolation of an electrical power transmission well |
| 08/06/1985 | CA1191554A1 Toroidal coupled telemetry apparatus |
| 08/06/1985 | CA1191454A1 Insulated tubular structure |
| 08/06/1985 | CA1191453A1 Shock sub |
| 08/06/1985 | CA1191452A1 Releasable tubing string connector |
| 08/06/1985 | CA1191451A1 Means for sealing a gap around a conductor pipe |
| 08/01/1985 | WO1985003249A1 Insulating coupling for drill collars and method of manufacture thereof |
| 07/31/1985 | EP0149612A1 Tubular connection with cylindrical and tapered stepped threads. |
| 07/30/1985 | US4531766 Releasable couplings for drill strings |
| 07/30/1985 | US4531582 Well conduit centralizer |
| 07/30/1985 | CA1191173A1 Frangible pipe coupling |
| 07/30/1985 | CA1191172A1 Screw coupling joint |
| 07/24/1985 | EP0149207A2 Tool assembly comprising a percussion bit and a drill pipe |
| 07/23/1985 | US4530527 Connection of drill tubes |
| 07/23/1985 | US4530399 Stop device for well conduit |
| 07/23/1985 | CA1190918A1 Well logging apparatus and method for making same |
| 07/18/1985 | WO1985003104A1 Protection device for threads and thrust-forming seal bearings of metal tubes |
| 07/17/1985 | EP0148807A1 Protector for pipe threads and abutment surfaces |
| 07/17/1985 | EP0148768A2 Clamp |
| 07/17/1985 | EP0148667A1 Process and device for geophysical measurements in a bore hole |
| 07/16/1985 | US4529334 Production riser assembly |
| 07/09/1985 | US4527928 Protective riser-conductor for offshore structures |
| 07/09/1985 | US4527815 Use of electroless nickel coating to prevent galling of threaded tubular joints |
| 07/09/1985 | US4527641 Percussion tool |
| 07/09/1985 | US4527639 Hydraulic piston-effect method and apparatus for forming a bore hole |
| 07/09/1985 | US4527503 Spar buoy escape system for offshore platforms |
| 07/09/1985 | CA1190145A1 Pipe string protector |
| 07/09/1985 | CA1190137A1 Recessed mounting device for instruments and its backfolding arms |
| 07/04/1985 | WO1985002947A1 Downhole self-aligning latch subassembly |
| 07/03/1985 | EP0147358A2 Tubular connection having a chevron wedge thread |
| 07/03/1985 | EP0147321A1 Quick coupling for riser pipes of oil wells |
| 07/03/1985 | EP0147315A2 Wet electrical connector |
| 07/03/1985 | EP0147144A2 Conductor guide arrangements for offshore well platforms |
| 07/02/1985 | US4526408 Insulating tubular conduit |
| 07/02/1985 | US4526241 Adjustable length drilling sub |
| 07/02/1985 | US4526233 Releasable coupling for tubing conveyed subterranean well perforating gun |
| 07/02/1985 | US4526048 Method for pumping a liquid from a well and apparatus for use |
| 07/02/1985 | CA1189851A1 Wear sleeve drill pipe assembly |
| 06/26/1985 | EP0146365A2 Conductor guide arrangements for offshore well platforms |
| 06/26/1985 | EP0146316A2 Mehtod of joining pipe |
| 06/25/1985 | US4525001 Pipe connector with interengagable tubular pin and tubular box members |
| 06/25/1985 | US4524998 Tubular connecting device |
| 06/25/1985 | US4524834 Cablehead side entry sub |
| 06/20/1985 | WO1985002651A1 Tubular connection |
| 06/19/1985 | EP0145154A1 Improvements in or relating to rods |
| 06/19/1985 | EP0144350A1 Test tool for subsea blowout preventer stack |
| 06/19/1985 | EP0077336B1 An extension coupling for rock drilling equipment |
| 06/18/1985 | US4523765 High pressure sealing means for longitudinally movable parts of deep-well drilling tools |
| 06/18/1985 | US4523644 Thermal oil recovery method |
| 06/18/1985 | US4523640 Arm release system for well logging apparatus |
| 06/18/1985 | CA1189061A1 Plural-part earth bit, and an improved bit head therefor |
| 06/18/1985 | CA1189060A1 Drilling device |
| 06/11/1985 | US4523194 Remotely operated downhole switching apparatus |
| 06/11/1985 | US4522431 Self-aligning connector assembly |
| 06/11/1985 | US4522430 Quick connect coupler |
| 06/11/1985 | US4522271 Method and apparatus for damping vibrations in drill collar strings |
| 06/11/1985 | CA1188719A1 Self-aligning connector assembly |
| 06/11/1985 | CA1188677A1 Stabilizer |
| 06/11/1985 | CA1188496A1 Tool assembly |
| 06/05/1985 | EP0143236A2 Pump rods |
| 06/05/1985 | EP0143219A1 Centralizer for well casings |
| 06/05/1985 | EP0143192A2 Method and apparatus for conducting logging operations in a borehole |
| 06/04/1985 | US4521042 Threaded connection |
| 06/04/1985 | US4520869 Centralizer for well casings |