| Patents for E21B 15 - Supports for the drilling machine, e.g. derricks or masts (4,619) |
|---|
| 10/01/1980 | EP0016717A1 Articulated supporting arm for the feed bar of a drilling apparatus |
| 09/30/1980 | CA1086514A1 Scissor well template |
| 09/23/1980 | US4224005 Truss rig |
| 09/23/1980 | CA1086298A1 Diamond drill skid pad |
| 09/09/1980 | US4221088 Low lift, elevatable high floor drilling mast and substructure arrangement therefor |
| 08/19/1980 | CA1083838A1 Method and apparatus for installing an offshore pile driving rig |
| 08/05/1980 | US4215953 Device for injecting cartridges of resin for bolting apparatus |
| 08/05/1980 | US4215848 Gripping and skidding apparatus |
| 07/29/1980 | US4214639 Suspended drilling system |
| 06/17/1980 | US4208158 Auxiliary offshore rig and methods for using same |
| 06/12/1980 | WO1980001202A1 Suspension device for angle indicator |
| 05/14/1980 | EP0011056A1 Drill rig having a device for setting the direction and/or the inclination of the rock drill |
| 05/13/1980 | US4202427 Derrick escape system |
| 05/06/1980 | US4201022 Wheeled portable well drilling and workover apparatus |
| 04/16/1980 | EP0009986A1 Support structure for use in water |
| 04/16/1980 | EP0009639A2 Multi-purpose mobile drill rig |
| 04/08/1980 | CA1075225A1 Downcrowding boom assembly |
| 04/08/1980 | CA1075022A1 Equipment for extracting oil or gas from under the sea bed and method of installing such equipment |
| 03/04/1980 | US4191267 Raise-boring |
| 02/26/1980 | US4190117 Support and positioner for rock drill |
| 02/05/1980 | US4187038 Equipment for extracting oil or gas from under the sea bed and method of installing such equipment |
| 01/29/1980 | US4185513 Universal coupling |
| 12/25/1979 | CA1068677A Raise-boring |
| 11/06/1979 | CA1065575A1 Modular drill rig erection system |
| 10/30/1979 | CA1065451A1 Automatic alignment system for earth boring rig |
| 10/23/1979 | CA1064898A2 Drawworks for portable drilling rig |
| 10/17/1979 | EP0004840A2 A drill boom arrangement |
| 10/17/1979 | EP0004839A2 A drill boom arrangement |
| 10/17/1979 | EP0004838A2 A drill boom arrangement |
| 10/17/1979 | EP0004837A2 A drill boom arrangement |
| 09/11/1979 | CA1062239A1 Multi-stage well drilling mast assembly |
| 09/11/1979 | CA1062236A1 Deviated conductor driving system |
| 07/11/1979 | EP0003006A1 A rock drill boom structure |
| 06/19/1979 | US4158393 Drill boom with hydraulic parallel motion means |
| 06/12/1979 | CA1056367A1 Hydraulic parallel-motion system |
| 06/05/1979 | US4157129 Stabbing board assembly |
| 04/03/1979 | US4147036 Scissor well template |
| 03/20/1979 | US4144940 Method and apparatus for installing an offshore pile driving rig |
| 03/13/1979 | USRE29929 Deviated conductor driving system |
| 02/27/1979 | CA1049491A1 Method and arrangement for positioning a working tool to a predetermined direction and/or predetermined point |
| 02/13/1979 | US4138805 Wheeled portable trailer substructure for elevatable drawworks, masts and setback tower |
| 02/06/1979 | CA1048122A1 Tilt responsive device for setting and retaining a fixed direction |
| 01/30/1979 | US4136996 Directional drilling marine structure |
| 01/23/1979 | US4135340 Modular drill rig erection systems |
| 01/16/1979 | US4134237 Modular section mast |
| 12/26/1978 | US4130995 VMP riser horizontal bearing |
| 12/19/1978 | US4130168 Downcrowding boom assembly |
| 12/19/1978 | CA1044598A1 Casing stabbing apparatus |
| 11/28/1978 | CA1043326A1 Hose training means |
| 11/21/1978 | US4126193 Mobile drilling apparatus |
| 11/21/1978 | US4126008 Sea-floor template |
| 11/14/1978 | CA1042416A1 Method and arrangement for positioning a drill boom |
| 11/07/1978 | US4124081 Post driving machine |
| 11/07/1978 | CA1041781A1 Post driving machine |
| 10/24/1978 | US4121347 Device for setting and retaining a fixed direction |
| 10/10/1978 | CA1039961A1 Offshore platforms |
| 10/03/1978 | CA1039705A1 Derrick tilting system |
| 09/26/1978 | US4116409 Hydraulic levelling systems for drilling machines, etc. |
| 09/12/1978 | US4113033 Method and arrangement for positioning a working tool to a predetermined direction and/or a predetermined point |
| 08/29/1978 | US4109800 Multi-stage well-drilling mast assembly |
| 08/22/1978 | US4108254 Drilling apparatus |
| 08/08/1978 | US4105081 Rock-drilling and bolt-setting apparatus |
| 07/25/1978 | US4102094 Bottom brace for crane |
| 07/18/1978 | US4100754 Method and apparatus for installing pipes in off-shore locations |
| 05/09/1978 | US4087984 Marine structure for drilling after and/or production of hydrocarbons |
| 05/09/1978 | US4087983 Offshore platforms |
| 03/28/1978 | US4081163 Blow out preventer handling system |
| 03/28/1978 | US4080916 Maritime platform assemblies |
| 03/14/1978 | US4078617 Portable drill rig for boring underground inverted arcuate paths |
| 02/21/1978 | US4074774 Drilling assembly |
| 01/17/1978 | US4068729 Apparatus for multiple wells through a single caisson |
| 01/17/1978 | US4068487 Method and apparatus for conducting subaqueous operations in ice conditions |
| 01/10/1978 | US4067397 Hand-operated device for drilling blast-holes |
| 01/03/1978 | US4066135 Telescopic rock drill mounting |
| 12/06/1977 | US4061233 Drilling rigs |
| 11/22/1977 | US4059162 Drilling unit for stadium seats |
| 09/27/1977 | US4050590 Drilling rigs |
| 09/27/1977 | US4050526 Post driving machine |
| 09/20/1977 | US4049065 Drilling apparatus |
| 09/13/1977 | US4047582 Portable earth boring machine |
| 08/16/1977 | US4042043 Portable earth boring machine |
| 08/02/1977 | US4039032 Hose training means |
| 07/26/1977 | US4037671 Drill boom with hydraulic parallel motion means |
| 07/19/1977 | US4036508 Self-propelled drilling and workover rig |
| 06/21/1977 | US4030310 Monopod drilling platform with directional drilling |
| 06/07/1977 | US4027734 Deviated conductor driving system |
| 05/31/1977 | US4027210 Method and control system to limit shifting movement of a winning tool for a tunneling machine |
| 05/24/1977 | US4024924 Drilling rig with independent table structure |
| 05/10/1977 | US4022410 Universal coupling |
| 05/10/1977 | US4022284 Automatic alignment system for earth boring rig |
| 05/10/1977 | US4021978 Mast assembly |
| 05/03/1977 | US4020909 Portable earth drilling apparatus |
| 04/12/1977 | US4016687 Angular adjustment for drill rig mast |
| 03/29/1977 | US4014266 Transport track and sliding carriage for moving heavy loads |
| 03/01/1977 | US4009544 Drilling rig with improved mast support structure |
| 02/15/1977 | US4007782 Parking device for blowout preventer |
| 02/01/1977 | US4005851 Hydraulically operated drilling apparatus |
| 12/07/1976 | US3995701 Derrick tilting system |
| 11/23/1976 | US3993271 Drill boom arrangement |
| 11/23/1976 | US3992831 Angle drilling apparatus |