| Patents for E21B 19 - Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables (17,198) |
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| 09/29/1988 | DE3708616A1 Tie-drilling apparatus |
| 09/27/1988 | US4773689 Apparatus for clamping to the end of a pipe |
| 09/20/1988 | CA1242184A1 Drillstem motion apparatus, especially for the execution of continuously operational deepdrilling |
| 09/20/1988 | CA1242156A1 Method and apparatus for braking a derrick winch |
| 09/13/1988 | US4770563 Device for connecting lines associated with an offshore drilling equipment |
| 09/07/1988 | EP0280705A1 Process and device for producing drilling holes from an angled position in relation to the drilling axes. |
| 08/31/1988 | EP0279819A1 An arrangement relating to a drilling tower |
| 08/31/1988 | CN87215042U Antibreaking device of bare rod cable-suspened apparatus for oil pumping well |
| 08/30/1988 | US4767100 Drilling rig with hoist transportable by a vehicle |
| 08/23/1988 | US4765435 Mobile well-logging laboratory |
| 08/23/1988 | US4765401 Apparatus for handling well pipe |
| 08/23/1988 | CA1240982A1 Method and system for drill stem breakout during drilling operations |
| 08/17/1988 | EP0278936A1 An improved piling method |
| 08/17/1988 | CN88100701A Improved piling method |
| 08/16/1988 | CA1240664A1 Pipe handling apparatus |
| 08/16/1988 | CA1240616A1 Riser tensioning system |
| 08/16/1988 | CA1240526A1 Clamping attachment to a device for driving rod elements of low rigidity into the ground |
| 08/11/1988 | WO1988005843A1 Piling method |
| 08/11/1988 | DE3703134A1 Underground pipe-driving method and construction set for carrying out this method |
| 08/09/1988 | US4762187 Internal wrench for a top head drive assembly |
| 08/09/1988 | US4762185 Off-shore drilling |
| 08/03/1988 | CN87216427U Long core tail pipe suspension device with automatic trip |
| 08/03/1988 | CN87205516U Mechanical-hydraulic double action type tail pipe suspension device |
| 07/27/1988 | EP0276161A2 Self-adjusting bit basket |
| 07/26/1988 | US4759662 TLP marine riser tensioner |
| 07/26/1988 | US4759256 Tensioner recoil control apparatus |
| 07/26/1988 | US4759239 Wrench assembly for a top drive sub |
| 07/26/1988 | CA1239634A1 Weight compensating elevator |
| 07/20/1988 | CN86108603A Dynamic slewing locked water tap |
| 07/19/1988 | US4757866 Hydraulic drill feed units |
| 07/12/1988 | US4756538 Device for clamping drill pipe and the like in mouse hole pipe |
| 07/12/1988 | US4756366 Well servicing methods using a hydraulic actuated workover mast |
| 07/12/1988 | US4756188 Method and apparatus for compensating for drilling line stretch in determining equipment depth in a well and for measurement of hookload on the traveling block of a drilling rig |
| 07/06/1988 | EP0273474A1 Catamaran-type semisubmersible drilling vessel for offshore drilling |
| 06/30/1988 | DE3642387A1 Device for setting drill stems in rotational motion and for axially moving drill stems |
| 06/29/1988 | EP0272850A2 Apparatus for racking and handling drilling tubulars between a horizontal and a vertical position |
| 06/29/1988 | CN86108443A Spatially-adjustable support of a workover rig and derrick |
| 06/28/1988 | US4753553 Bearing structure and a floating vessel comprising such structure |
| 06/28/1988 | US4753300 Hydraulic top drive for wells |
| 06/28/1988 | CA1238574A1 Casing alignment tool |
| 06/23/1988 | EP0245370A4 Powered pipe wrench. |
| 06/21/1988 | US4751969 Apparatus and method for removing fluids from a well |
| 06/15/1988 | EP0270594A1 Device for handling pipe elements |
| 06/09/1988 | DE3726078C1 Catch device for a drill string of a rock-drilling machine |
| 06/08/1988 | EP0270458A1 Ground drilling device working along a substantially horizontal axis |
| 06/08/1988 | EP0270336A2 Method and apparatus for tensioning a riser |
| 06/08/1988 | EP0270335A2 Method and apparatus for tensioning a riser |
| 06/08/1988 | EP0269669A1 Arrangement in a hoisting device, especially for a derrick |
| 06/07/1988 | CA1237664A1 Power tongs and control system |
| 05/31/1988 | US4748563 Have invented certain new and useful improvements in method and apparatus for controlling the lift travel of a mast or derrick |
| 05/31/1988 | US4747454 External axis parallel alignment system |
| 05/31/1988 | CA1237421A1 Rotary drive coupling |
| 05/24/1988 | US4746096 Apparatus for driving an elongate member through the ground |
| 05/17/1988 | US4744710 Drilling derrick with external pipe storage |
| 05/11/1988 | EP0267002A2 Automatic pipe racking apparatus |
| 05/10/1988 | US4743175 Reel assembly for dewatering apparatus |
| 05/10/1988 | US4743055 Automatic gripper for gripping and holding a rod, especially on a drilling rig |
| 05/10/1988 | US4742792 Communication arrangement between a sub-sea structure and floating vessel |
| 05/05/1988 | WO1988003245A1 Method and device for replacing damaged pipes buried in the ground |
| 05/05/1988 | WO1988003221A1 Earth boring apparatus |
| 05/03/1988 | CA1236147A1 Multiple disk brake control |
| 04/27/1988 | EP0265234A2 Pipe handling apparatus |
| 04/26/1988 | US4740658 Pushing and pulling cable |
| 04/26/1988 | US4739681 Machine for making up and breaking out pipe joints |
| 04/19/1988 | US4738321 Process and apparatus for vertical racking of drilling shafts on a drilling tower |
| 04/19/1988 | US4738145 Monitoring torque in tubular goods |
| 04/12/1988 | USRE32642 Pipe base well screen and system for joining a plurality of well screen segments |
| 04/12/1988 | CA1235111A1 Power tongs with improved hydraulic drive |
| 04/12/1988 | CA1235074A1 Soundproofing device for boring bar |
| 04/05/1988 | US4735270 Drillstem motion apparatus, especially for the execution of continuously operational deepdrilling |
| 03/30/1988 | EP0261924A2 Tong |
| 03/29/1988 | US4733991 Adjustable riser top joint and method of use |
| 03/22/1988 | US4732224 Auger apparatus |
| 03/22/1988 | US4732061 Power tongs and clamping units therefor |
| 03/15/1988 | US4730677 Method and system for maintenance and servicing of subsea wells |
| 03/10/1988 | WO1988001677A1 Process and device for producing drilling holes from an angled position in relation to the drilling axes |
| 03/09/1988 | EP0258705A2 Device for handling and setting drill pipes in a derrick |
| 03/08/1988 | US4729694 TLP marine riser tensioner |
| 03/08/1988 | US4729269 Powered pipe wrench |
| 03/08/1988 | US4729158 Tool for aiding the assembly of drill stabilizer to the drill collar when up the bottom hole assembly |
| 03/01/1988 | US4727781 For making up/breaking apart pipe joints |
| 02/24/1988 | EP0256601A1 Method and device for making a hole in the ground |
| 02/24/1988 | EP0256177A1 Spar buoy construction having production and oil storage facilities and method of operation |
| 02/16/1988 | US4725179 Automated pipe racking apparatus |
| 02/16/1988 | US4725088 Lifting system |
| 02/16/1988 | CA1232899A1 Power feed system for a rotary drill |
| 02/11/1988 | WO1988001009A1 Method and system for attaching and removing equipment from a wellhead |
| 02/11/1988 | WO1988001008A1 An arrangement relating to a drilling tower |
| 02/11/1988 | WO1988000274A3 Adjustable mechanism for stabbing and threading a drill pipe safety valve |
| 02/09/1988 | US4723805 Apparatus for supporting objects |
| 02/09/1988 | CA1232601A2 Drill pipe pull-up mechanism |
| 02/09/1988 | CA1232537A1 Wrench assembly |
| 02/02/1988 | CA1232265A2 Drill pipe coupling tool |
| 02/02/1988 | CA1232145A1 Conductor guide system for offshore drilling platform |
| 01/26/1988 | US4721171 Opening device for drill rods for an extension rod drilling equipment |
| 01/26/1988 | CA1231937A1 Derrick for drilling |
| 01/19/1988 | US4719978 Earth drilling device |
| 01/14/1988 | WO1988000274A2 Adjustable mechanism for stabbing and threading a drill pipe safety valve |
| 01/14/1988 | WO1988000273A1 Riser tensioner |
| 01/14/1988 | DE3622934A1 Drill tool of compact design |