| 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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| 06/16/1981 | US4273199 Torquer/thruster |
| 06/16/1981 | US4273193 Process for use in degasification of subterranean mineral deposits |
| 06/16/1981 | US4273068 Connection of cold water riser pipes to supporting structures |
| 06/16/1981 | US4273010 Power tong |
| 06/09/1981 | US4272059 Riser tensioner system |
| 06/09/1981 | CA1102689A1 Coiled tubing apparatus |
| 05/26/1981 | US4269554 Well pipe handling equipment |
| 05/26/1981 | US4269395 Portable hydraulic rig for performing workover, drilling and other operations on a well |
| 05/26/1981 | US4269277 Power slip assembly |
| 05/19/1981 | US4268082 Elevator latch for drilling rigs |
| 05/19/1981 | US4268011 Stud tensioner for blowout preventer |
| 05/12/1981 | US4266450 Power tong assembly |
| 05/12/1981 | US4266444 High-low speed rotary drive mechanism |
| 05/12/1981 | CA1100936A1 Well tubing handling apparatus |
| 05/05/1981 | US4266171 Advance control system for use in a drilling apparatus |
| 05/05/1981 | US4265304 Coiled tubing apparatus |
| 04/28/1981 | US4264234 Directional orientation apparatus for surface end of submerged oil line |
| 04/28/1981 | US4264051 Laterally adjustable multiple head |
| 04/21/1981 | US4262756 Torquer/thruster |
| 04/21/1981 | US4262754 Rotary drilling device with pivoting drill head assembly |
| 04/14/1981 | US4261251 Kelly head for hydraulic mast digger |
| 04/07/1981 | US4260029 Midpoint centralizer |
| 03/31/1981 | US4258802 Downhole drilling system |
| 03/31/1981 | US4258796 Earth drilling apparatus |
| 03/24/1981 | US4257578 Oil well service rig |
| 03/24/1981 | CA1098030A1 Well casing spider |
| 03/03/1981 | US4253354 Hydraulic catworks system |
| 03/03/1981 | US4253219 Well slip assembly |
| 03/03/1981 | CA1096850A1 Injection assembly |
| 02/24/1981 | US4252190 Wireline stabilization method and apparatus |
| 02/17/1981 | US4251176 Well tubing handling apparatus |
| 02/17/1981 | US4251058 Drive jaws for an underground pipe installer device |
| 02/17/1981 | US4251057 Leveling means for an underground pipe installer device |
| 02/17/1981 | US4251046 Extensible beam arrangement |
| 02/17/1981 | US4250973 Rock drilling apparatus |
| 02/17/1981 | US4250773 Rotary tong incorporating interchangeable jaws for drill pipe and casing |
| 02/10/1981 | US4249600 Double cylinder system |
| 02/10/1981 | CA1095402A1 Marine riser system with dual purpose lift and heave compensator mechanism |
| 02/03/1981 | US4248312 Method and apparatus for upwardly cutting full cutting face of a shaft without requesting workmen's hands |
| 02/03/1981 | CA1095093A1 Method and device for breaking a hard compact material |
| 02/03/1981 | CA1095022A1 Pipe-handling apparatus |
| 02/03/1981 | CA1094831A1 Rock bolting apparatus |
| 01/27/1981 | US4246974 Offset drilling machine |
| 01/27/1981 | US4246809 Power tong apparatus for making and breaking connections between lengths of small diameter tubing |
| 01/13/1981 | US4244628 Guide roller assembly |
| 01/13/1981 | US4244093 Tubing slip pulling tool |
| 01/06/1981 | CA1092944A1 Electro-hydraulic interface for a power tongs |
| 12/23/1980 | US4240511 Drilling machine centering arrangement |
| 11/25/1980 | US4235566 Pipe-conveying catwalk |
| 11/25/1980 | US4235469 Pipe handling apparatus |
| 11/25/1980 | CA1090326A1 Chuck for an earth boring machine |
| 11/11/1980 | CA1089438A1 Rock drill positioning mechanism |
| 11/04/1980 | US4231429 Lateral tensioning system for riser pipe |
| 11/04/1980 | CA1088918A1 Power tong drive mechanism |
| 10/29/1980 | EP0018115A1 Method and apparatus for measuring the makeup of a threaded connection |
| 10/28/1980 | US4230190 Blow out preventer handling system |
| 10/28/1980 | US4230189 Drilled hole end adjusting arrangement |
| 10/28/1980 | CA1088511A1 Portable drilling rig |
| 10/21/1980 | US4228862 Apparatus for drilling holes in the ground |
| 10/16/1980 | WO1980002174A1 A pipe clamp and a probing comprising a pipe clamp |
| 10/14/1980 | US4227733 Apparatus for connecting a lifting tackle to a submersible pump |
| 10/14/1980 | CA1087602A1 Well drill pipe support |
| 10/14/1980 | CA1087601A1 Portable drilling machine |
| 10/14/1980 | CA1087600A1 Oil derrick string-up apparatus and methods |
| 10/07/1980 | US4226447 Swivel apparatus |
| 10/07/1980 | US4226288 Side hole drilling in boreholes |
| 10/07/1980 | CA1087162A1 Slip assembly |
| 10/01/1980 | EP0016717A1 Articulated supporting arm for the feed bar of a drilling apparatus |
| 10/01/1980 | EP0015931A1 Process and device for screwing tubular sleeves |
| 09/23/1980 | US4223870 Bailer for top head drive rotary well drills |
| 09/23/1980 | US4223737 Method for well operations |
| 09/23/1980 | CA1086300A1 Variable speed auger for use with a skid steer vehicle |
| 09/23/1980 | CA1086297A1 Wire line clamp for use in a drilling apparatus |
| 09/23/1980 | CA1086296A1 Drilling apparatus |
| 09/23/1980 | CA1086222A1 Marine production riser system |
| 09/16/1980 | US4222447 Drill bit with suction jets |
| 09/16/1980 | US4222341 Riser tensioning wave and tide compensating system for a floating platform |
| 09/16/1980 | US4222174 Method and apparatus for gaging and joining pipe |
| 09/09/1980 | US4221269 Pipe spinner |
| 09/09/1980 | CA1085377A1 Casing tong |
| 09/03/1980 | EP0015086A1 Kelly bushing in a downhole drilling system |
| 08/12/1980 | CA1083613A1 Stabilized hoist rig for deep ocean mining vessel |
| 08/05/1980 | US4215950 Tensioner device for offshore oil production and exploration platforms |
| 08/05/1980 | US4215602 Power tongs |
| 07/29/1980 | US4214639 Suspended drilling system |
| 07/29/1980 | US4214445 Hydraulic circuitry for raise drill apparatus |
| 07/22/1980 | US4213720 Tensioning of members |
| 07/22/1980 | US4213237 Stabbing guide |
| 07/15/1980 | US4212576 Pipe handling apparatus |
| 07/15/1980 | US4212212 Rotary drive apparatus |
| 07/15/1980 | CA1081607A1 Flexible conduit injection system |
| 07/01/1980 | US4210017 Method and apparatus for generating an actual torque signal during the make-up of threaded joints |
| 06/24/1980 | US4209066 Method and apparatus for running tubular goods into and out of a borehole |
| 06/24/1980 | US4208775 Method and apparatus for making threaded joints |
| 06/24/1980 | CA1080190A1 Method for storing a flexible elongated element in a basket rotating around a vertical axis |
| 06/17/1980 | US4208158 Auxiliary offshore rig and methods for using same |
| 06/17/1980 | US4207805 Feed beam |
| 06/03/1980 | US4205727 Clamping means for a device for driving flexible rod-shaped elements in soil |
| 06/03/1980 | CA1078816A1 Rod puller for rock drill |
| 06/03/1980 | CA1078815A1 Tilt preventing system for drills |