| 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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| 06/15/1982 | US4334444 Power tongs |
| 06/15/1982 | CA1125811A1 Method and apparatus for connecting steel pipe sections |
| 06/15/1982 | CA1125737A1 Power tong |
| 06/15/1982 | CA1125736A1 Well string retrieving apparatus |
| 06/08/1982 | US4333365 Power pipe tongs |
| 06/08/1982 | US4333209 Rotary power slips |
| 06/01/1982 | US4332411 Oil well pipe pickup and laydown apparatus |
| 06/01/1982 | US4332062 Bowl structure |
| 04/27/1982 | US4327261 Apparatus for sensing a distended location on a drill pipe |
| 04/27/1982 | US4326756 Rest for drilling rig |
| 04/27/1982 | US4326745 Link control system for use with dual elevators |
| 04/27/1982 | US4326602 Portable stabbing board |
| 04/27/1982 | US4326449 Double acting hydraulic jack with an end of stroke device |
| 04/27/1982 | US4326435 Hydraulic power tong |
| 04/20/1982 | US4326236 Control system for an electro-magnetic brake |
| 04/20/1982 | US4325438 Lengthening drill string containing an instrument |
| 04/15/1982 | WO1982001212A1 Pipe handling apparatus with trough clamping means |
| 04/13/1982 | US4324505 Subsea blowout containment method and apparatus |
| 04/13/1982 | US4324194 Stabilized hoist rig for deep ocean mining vessel |
| 04/13/1982 | US4324157 Drill pipe clamp |
| 04/06/1982 | US4323216 Balanced support plates |
| 03/30/1982 | US4321836 Ton-mile recorder |
| 03/30/1982 | CA1120915A1 Positioning control system for rock drill support apparatus |
| 03/23/1982 | US4320915 Internal elevator |
| 03/18/1982 | WO1982000853A1 Tubular handling apparatus |
| 03/18/1982 | WO1982000852A1 Pipe handling system with apron and stacking arms |
| 03/16/1982 | US4319709 Positioning of an additional tubular element on a tubular structure |
| 03/09/1982 | CA1119581A1 Downhole drilling system |
| 03/02/1982 | US4317493 Kelly drive bushing adapter |
| 03/02/1982 | US4317491 Wireline protector |
| 03/02/1982 | CA1119157A1 Derrick escape system |
| 02/18/1982 | WO1982000428A1 Well pipe connecting and disconnecting apparatus |
| 02/16/1982 | US4315709 Apparatus for transporting the male ends of threaded tubing, pipe, or the like |
| 02/16/1982 | US4315553 Continuous circulation apparatus for air drilling well bore operations |
| 02/16/1982 | US4315552 Raise drill apparatus |
| 02/10/1982 | EP0045651A2 Apparatus and method for supporting a tubular riser |
| 02/09/1982 | US4314400 Strap cutter and method |
| 02/09/1982 | CA1117933A1 Multi-purpose mobile drill rig |
| 02/02/1982 | US4313566 Fluid balancing system for tank vehicle |
| 02/02/1982 | US4313318 Adjustable kelly bushing for downhole drilling system |
| 01/27/1982 | EP0044706A2 Method and apparatus for forming and using a bore hole |
| 01/27/1982 | EP0044335A1 Connection rod between the hoisting hook and the elevator of a drill rod |
| 01/26/1982 | US4312413 Drilling apparatus |
| 01/26/1982 | US4312287 Apparatus for handling submersibles at sea |
| 01/21/1982 | WO1982000171A1 A drill steel guiding and centralizing mechanism |
| 01/19/1982 | US4311347 Drill steel guide |
| 01/19/1982 | CA1116591A1 Earth boring apparatus |
| 01/12/1982 | US4310283 Method for handling pipe |
| 01/12/1982 | US4309922 Rod break-out and make-up tool |
| 01/05/1982 | US4308923 Accu-press |
| 01/05/1982 | CA1115686A1 Power tong assembly |
| 12/22/1981 | US4306626 Hydraulic earth boring machine |
| 12/22/1981 | US4306471 Pipe spinner assembly |
| 12/22/1981 | US4306339 Power operated pipe slips and pipe guide |
| 12/15/1981 | US4305472 Apparatus for recording and limiting torque |
| 12/15/1981 | US4305467 Blow-out preventer lift system and method |
| 12/08/1981 | US4304433 Pipe gripping head |
| 12/08/1981 | CA1113921A1 Indicator ring |
| 12/08/1981 | CA1113730A1 Guide roller |
| 12/01/1981 | US4303270 Self-centering clamp |
| 12/01/1981 | US4303132 Safety device for rotary earth drilling apparatus |
| 11/10/1981 | CA1112060A1 Alignment device for submerged tube ends by means of a surface support |
| 11/03/1981 | US4298076 Chuck and wrench assembly for raise drill apparatus |
| 11/03/1981 | US4297922 Jaw support for a power tongs |
| 11/03/1981 | US4297771 Pivoting foot clamp and mounting frame |
| 10/27/1981 | US4296821 Drilling rig and conversion apparatus |
| 10/27/1981 | US4296820 Drilling apparatus |
| 10/27/1981 | US4296819 Cable tensioner for a downcrowding device for earth boring machines |
| 10/20/1981 | US4295527 Process and device for the centering of casings as used for underground drilling |
| 10/20/1981 | US4295526 Method and apparatus for connecting steel pipe sections |
| 10/14/1981 | EP0014715B1 Machine for pulling out a drilling tube of the ground |
| 10/13/1981 | US4294444 Pipe gripping vise |
| 09/30/1981 | EP0036850A2 A working machine for demolition and excavation work |
| 09/29/1981 | US4291762 Apparatus for rapidly attaching an inside blowout preventer sub to a drill pipe |
| 09/29/1981 | US4291598 Brake apparatus for power wrench |
| 09/22/1981 | US4290495 Portable workover rig with extendable mast substructure, platform mounted drawworks and adjustable wellhead anchor |
| 09/22/1981 | US4290491 Rock drill positioning mechanism |
| 09/22/1981 | US4290304 Back-up power tongs and method |
| 09/16/1981 | EP0035982A1 A rock drilling rig |
| 09/15/1981 | CA1109054A1 Combined well casing spider and elevator |
| 09/15/1981 | CA1109053A1 Auxiliary offshore rig and methods for using same |
| 09/08/1981 | CA1108435A1 Method and apparatus for logging inclined earth boreholes using the measured acceleration of the well logging instrument |
| 09/01/1981 | US4286656 Composite carrier bar device |
| 08/25/1981 | US4286137 Method for assembling vertical ducts by electron-welding |
| 08/25/1981 | US4285629 Fire fighting boom assembly for service vessel |
| 08/25/1981 | CA1107847A1 Method of and apparatus for making up a threaded connection |
| 08/19/1981 | EP0034134A1 Rock bolting apparatus |
| 08/11/1981 | CA1106923A1 Treating, including induction heating of well pipe connections |
| 08/06/1981 | WO1981002182A1 Connection rod between the hoisting hook and the elevator of a drill rod |
| 08/04/1981 | US4282523 Method and apparatus for logging inclined earth boreholes |
| 08/04/1981 | US4281722 Retractable bit system |
| 08/04/1981 | US4281716 Flexible workover riser system |
| 08/04/1981 | US4281614 Connection of the upper end of an ocean upwelling pipe to a floating structure |
| 07/28/1981 | US4280397 Hydraulic fluid control apparatus |
| 07/14/1981 | CA1104999A1 No translation available |
| 07/07/1981 | CA1104490A1 Riser tensioner system |
| 06/30/1981 | US4275488 Combined well casing spider and elevator |
| 06/30/1981 | US4275487 Well casing spider |
| 06/23/1981 | US4274778 Mechanized stand handling apparatus for drilling rigs |
| 06/23/1981 | US4274777 Subterranean well pipe guiding apparatus |