| Patents for E21B 7 - Special methods or apparatus for drilling (22,064) |
|---|
| 03/18/1980 | US4193461 Means and method for forming and enlarging holes in soil |
| 03/18/1980 | CA1073896A1 Drill steel centralizer |
| 03/18/1980 | CA1073808A1 Well casing window mill |
| 03/11/1980 | US4192393 Helicopter portable earth drilling apparatus |
| 03/04/1980 | US4191267 Raise-boring |
| 03/04/1980 | US4191263 Peat sampling probe |
| 02/26/1980 | US4190385 Protective canopy and temporary roof support for mining machinery |
| 02/26/1980 | US4190202 High pressure pulsed water jet |
| 02/26/1980 | US4190121 Thermal drilling device |
| 02/26/1980 | US4190120 Moveable guide structure for a sub-sea drilling template |
| 02/26/1980 | US4190117 Support and positioner for rock drill |
| 02/19/1980 | US4189255 Sea-floor shoring cellar and method of installing same |
| 02/19/1980 | US4189185 Method for producing chambered blast holes |
| 02/12/1980 | CA1071534A1 Method and apparatus for tapping groundwater |
| 02/06/1980 | EP0007825A2 Underwater drilling method and apparatus relating thereto |
| 02/05/1980 | US4186809 Steep angle raise bit |
| 01/29/1980 | US4185706 Rock bit with cavitating jet nozzles |
| 01/29/1980 | US4185705 Well perforating tool |
| 01/29/1980 | US4185704 Directional drilling apparatus |
| 01/29/1980 | US4185703 Apparatus for producing deep boreholes |
| 01/29/1980 | US4185694 Marine riser system |
| 01/29/1980 | US4185513 Universal coupling |
| 01/29/1980 | CA1070517A1 Method and device for determining the pore water pressure in a soil |
| 01/24/1980 | WO1980000093A1 Apparatus for automatic bolting in rock reinforcement |
| 01/23/1980 | EP0007289A1 Ignition device for oxygen cutting lances |
| 01/22/1980 | US4184553 Method for controlling direction of horizontal borehole |
| 01/15/1980 | US4183562 Marine riser conduit section coupling means |
| 01/15/1980 | US4183415 Drilling apparatus |
| 01/09/1980 | EP0006786A1 Device for boring a stepped hole for receiving a post or the like |
| 01/09/1980 | EP0006656A1 Device for winning minerals via a borehole |
| 01/08/1980 | US4182947 Underwater cutting rod |
| 01/08/1980 | US4182424 Drill steel centralizer |
| 01/08/1980 | US4182423 Whipstock and method for directional well drilling |
| 01/08/1980 | US4182422 Large diameter bit with bridge mounted drive stem |
| 01/01/1980 | US4181455 Apparatus for generating rotary power in a deep-sea environment |
| 01/01/1980 | US4181182 Wagon having incorporated support jacks |
| 01/01/1980 | CA1069113A Rock drilling process and device for start-up of sawe |
| 12/25/1979 | CA1068677A Raise-boring |
| 12/25/1979 | CA1068676A Rock drilling apparatus |
| 12/18/1979 | US4179001 Underground drilling and casing method and apparatus |
| 12/18/1979 | US4179000 Self-cleaning raise boring head system |
| 12/11/1979 | US4177866 System for boring raises having portions of different diameters |
| 12/11/1979 | CA1067711A1 Mine roof support for a mobile drilling machine |
| 12/04/1979 | US4176985 System and method for installing production casings |
| 12/04/1979 | US4176722 Marine riser system with dual purpose lift and heave compensator mechanism |
| 12/04/1979 | US4176716 Method and apparatus for tapping groundwater |
| 11/27/1979 | US4175890 Joints for anchoring structures to the sea bed |
| 11/20/1979 | US4174758 Percussive action pneumatic device for drilling holes in soil |
| 11/20/1979 | CA1066606A1 Apparatus and process for splitting minerals using a frame cutter |
| 11/20/1979 | CA1066523A1 Platforms for sea-bottom exploitation |
| 11/06/1979 | US4173373 Advance method and apparatus for mining |
| 11/06/1979 | CA1065838A1 Wagon e.g. crawler drill wagon |
| 11/01/1979 | WO1979000859A1 Process and tool for ground drilling |
| 10/30/1979 | CA1065451A1 Automatic alignment system for earth boring rig |
| 10/23/1979 | US4171727 Reversible, percussive device for ground perforation |
| 10/23/1979 | CA1064899A1 Drill string holder |
| 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 |
| 10/17/1979 | EP0004674A2 Drill bit for making bore holes in earth and rock |
| 10/16/1979 | CA1064470A1 Rock drilling apparatus with noise reducing drill rod cover |
| 10/16/1979 | CA1064467A1 Method and apparatus for thin-walled tube sampling of soils |
| 10/16/1979 | CA1064274A1 Drilling structure for drilling in the ocean floor |
| 10/09/1979 | US4170187 Arctic drilling and production platform |
| 10/09/1979 | CA1063818A1 Rotatable mine drilling apparatus |
| 10/02/1979 | CA1063696A1 Damped pendulum angular position |
| 10/02/1979 | CA1063505A1 Ignition method for oxygen lances |
| 10/02/1979 | CA1063447A1 Reversible air-operated apparatus of the percussive type for driving holes in ground by compacting same |
| 09/25/1979 | US4168752 Flexible conduit for effecting lateral channelling in coal or oil shale beds |
| 09/25/1979 | CA1063017A1 Riser set-aside system |
| 09/11/1979 | US4167279 Vertically moored platform deck casinghead |
| 09/11/1979 | CA1062236A1 Deviated conductor driving system |
| 09/11/1979 | CA1062151A2 Method of cementing a composite string of a well casing |
| 09/11/1979 | CA1062150A2 Dart for use in cementing of well casings |
| 09/11/1979 | CA1062149A2 Trip plug for operating a cementing collar in a well |
| 09/11/1979 | CA1062148A2 Subsea well installation |
| 09/04/1979 | US4166509 Process for excavating and constructing tunnel and excavating device |
| 09/04/1979 | CA1061772A1 Method and means for effecting lateral channelling in coal or oil shale beds |
| 09/04/1979 | CA1061709A1 Subterranean mining apparatus and method |
| 09/04/1979 | CA1061597A1 Method and device for pore pressure sounding |
| 08/28/1979 | US4165690 Drill units for drilling and charge laying operations and method of carrying out the operations |
| 08/28/1979 | CA1061324A1 Rock drilling machine |
| 08/28/1979 | CA1061249A1 Subterranean drilling and slurry mining |
| 08/21/1979 | US4164871 Push drill guidance indication apparatus |
| 08/07/1979 | US4163478 Self aligning impact rock drilling tool |
| 07/31/1979 | US4162763 Water jet valve assembly |
| 07/24/1979 | US4161990 Rock drilling apparatus |
| 07/24/1979 | US4161988 Portable earth core sampling machine |
| 07/11/1979 | EP0003006A1 A rock drill boom structure |
| 07/03/1979 | US4159819 Tube-driving apparatus |
| 07/03/1979 | US4159668 Method for placing explosives in submerged rock |
| 06/26/1979 | CA1057354A1 Surveying of subterranean magnetic bodies from adjacent off-vertical borehole |
| 06/26/1979 | CA1057317A1 Method and apparatus for in-cutting and out-cutting during coal mining |
| 06/26/1979 | CA1057275A1 Raise drill with replaceable stem and replaceable stem therefor |
| 06/26/1979 | CA1057081A1 Method and apparatus for determining on-board a heaving vessel the flow rate of drilling fluid flowing out of a wellhole and into a telescoping marine riser connected between the wellhole and vessel |
| 06/19/1979 | US4158520 Rock bolting apparatus |
| 06/19/1979 | US4158393 Drill boom with hydraulic parallel motion means |
| 06/19/1979 | CA1056722A1 Marine riser system and method for installing the same |
| 06/13/1979 | EP0002291A2 Hydraulic core drill apparatus |