| Patents for E21B 7 - Special methods or apparatus for drilling (22,064) |
|---|
| 06/12/1979 | US4157878 Connecting apparatus for hingedly and slidably connecting an attachment to self-propelled mine vehicle |
| 06/12/1979 | CA1056367A1 Hydraulic parallel-motion system |
| 06/12/1979 | CA1056366A1 Rock drilling apparatus and method |
| 06/12/1979 | CA1056225A1 Drilling system for deep water offshore locations |
| 05/30/1979 | EP0002160A1 Device for drilling boreholes in the soil |
| 05/29/1979 | US4156537 Operator's cab for drill rig |
| 05/29/1979 | US4156471 Rubble and core removal apparatus |
| 05/22/1979 | US4155527 Trolley with supporting stand |
| 05/22/1979 | CA1054932A1 Subsea hydraulic choke |
| 05/08/1979 | US4153120 Change in length of drill string while instrument remains therein |
| 05/08/1979 | US4153119 Directional drilling apparatus |
| 05/08/1979 | US4153109 Method and apparatus for anchoring whipstocks in well bores |
| 04/24/1979 | US4150794 Liquid jet cutting nozzle and housing |
| 04/24/1979 | CA1053219A1 Earth boring apparatus and method employing high powered laser |
| 04/17/1979 | US4149604 Mining equipment |
| 04/17/1979 | US4149603 Riserless mud return system |
| 04/17/1979 | CA1052909A1 Device to gauge the position and the speed of a drill |
| 04/10/1979 | US4148367 Well drilling apparatus |
| 04/10/1979 | US4148366 Variable speed auger for use with a skid steer vehicle |
| 04/10/1979 | US4148212 Method and device for determining the pore water pressure in a soil |
| 04/03/1979 | US4147221 Riser set-aside system |
| 04/03/1979 | CA1051862A1 Multi function drill drive system |
| 04/03/1979 | CA1051676A1 Tunnel |
| 03/27/1979 | US4146347 Method and apparatus for lateral excavation |
| 03/20/1979 | US4144941 Directional impact tool for tunneling |
| 03/20/1979 | US4144940 Method and apparatus for installing an offshore pile driving rig |
| 03/13/1979 | USRE29929 Deviated conductor driving system |
| 03/13/1979 | US4143722 Downhole flexible drive system |
| 03/13/1979 | CA1050572A1 Device for building up high pulse liquid pressures |
| 03/13/1979 | CA1050527A1 Ring drilling rig |
| 03/06/1979 | US4142763 Attitude control means of tunnel boring machine shield |
| 03/06/1979 | US4142598 Two stage large diameter drill bit |
| 03/06/1979 | US4142593 Raise drill inner yoke bridge |
| 03/06/1979 | US4142584 Termination means for a plurality of riser pipes at a floating platform |
| 03/06/1979 | CA1050005A1 Locking apparatus for earth boring cutter or stabilizer |
| 02/27/1979 | US4141414 Device for supporting, raising and lowering duct in deep bore hole |
| 02/27/1979 | CA1049491A1 Method and arrangement for positioning a working tool to a predetermined direction and/or predetermined point |
| 02/20/1979 | CA1048996A1 Raise drilling bit with detachable stem |
| 02/13/1979 | US4139320 Process for excavating and constructing tunnel and excavating device |
| 02/13/1979 | CA1048485A1 Portable drilling rig compound |
| 02/06/1979 | US4137974 Hydraulically driven kelly crowd |
| 02/06/1979 | CA1048122A1 Tilt responsive device for setting and retaining a fixed direction |
| 02/06/1979 | CA1048012A1 Pneumatic hammer-auger earth boring apparatus |
| 01/30/1979 | US4136996 Directional drilling marine structure |
| 01/30/1979 | CA1047481A1 Apparatus and method for emplacing a conduit along an underground arcuate path |
| 01/23/1979 | US4135841 Mud flow heave compensator |
| 01/23/1979 | US4135588 Boring and compacting tool |
| 01/23/1979 | US4135586 Apparatus for constantly rotating casing during installation |
| 01/23/1979 | US4135585 Drill rig-casing driver assembly |
| 01/16/1979 | US4134463 Air lift system for large diameter borehole drilling |
| 01/16/1979 | US4134462 Geothermal energy recovery |
| 01/16/1979 | US4134461 Marine structure and method of drilling a hole by means of said structure |
| 01/16/1979 | CA1046294A1 Method and apparatus for lateral excavation |
| 01/09/1979 | US4133398 Collapsible spider for use in supporting casing during upward drilling operations |
| 01/09/1979 | US4133397 Drilling with multiple in-hole motors |
| 01/09/1979 | US4133396 Drilling and casing landing apparatus and method |
| 01/09/1979 | US4133395 Earth boring assembly with drag pipe |
| 01/02/1979 | US4132276 Arrangement for forming vertical or steeply inclined shafts |
| 12/26/1978 | US4131236 High velocity liquid jet cutting nozzle |
| 12/26/1978 | CA1045029A1 Marine riser |
| 12/26/1978 | CA1044904A1 Open bottom float tension riser |
| 12/19/1978 | US4130170 Probe for use in geological surveys |
| 12/19/1978 | US4130168 Downcrowding boom assembly |
| 12/19/1978 | CA1044710A1 Arrangement for widening and forming smaller, vertical or strongly inclined shafts |
| 12/19/1978 | CA1044473A1 Method for placement of production casing under obstacle |
| 12/12/1978 | US4129392 Rolling cutter arrangement |
| 12/12/1978 | US4129010 Tunnel |
| 12/12/1978 | CA1044117A1 Hydraulic flow divider for a mining vehicle |
| 12/05/1978 | US4127991 Apparatus for leveling and supporting a sub-sea drilling template |
| 12/05/1978 | US4127950 Bottom jetting device |
| 11/28/1978 | CA1043326A1 Hose training means |
| 11/21/1978 | US4126193 Mobile drilling apparatus |
| 11/14/1978 | CA1042416A1 Method and arrangement for positioning a drill boom |
| 11/07/1978 | US4124162 Shroud for a submerged jet cutting nozzle |
| 11/07/1978 | US4124082 Method of and apparatus for cutting a tunnel in plastic soil |
| 11/07/1978 | US4124081 Post driving machine |
| 11/07/1978 | CA1041781A1 Post driving machine |
| 10/31/1978 | US4123109 Mining method |
| 10/24/1978 | US4121673 Drilling and installation system |
| 10/24/1978 | US4121347 Device for setting and retaining a fixed direction |
| 10/24/1978 | CA1040875A1 Joints for anchoring structures to the sea bed |
| 10/10/1978 | US4119160 Method and apparatus for water jet drilling of rock |
| 10/10/1978 | US4118954 Motion compensator |
| 10/10/1978 | CA1040096A1 Wellpoint jetting head |
| 10/03/1978 | US4117895 Apparatus and method for enlarging underground arcuate bore holes |
| 10/03/1978 | CA1039759A1 Method and a machine for advancing an underground face of a geological formation |
| 10/03/1978 | CA1039705A1 Derrick tilting system |
| 09/26/1978 | US4116409 Hydraulic levelling systems for drilling machines, etc. |
| 09/26/1978 | US4116285 Process and apparatus for producing deep boreholes |
| 09/19/1978 | US4114863 Thermal torch and method |
| 09/19/1978 | US4114705 Rock drilling tool having pulsed jets |
| 09/19/1978 | US4114700 Pneumatic apparatus of the percussive type |
| 09/19/1978 | US4114698 Method and apparatus for tunneling upwardly |
| 09/19/1978 | CA1038634A1 Subsea structure |
| 09/19/1978 | CA1038633A1 Self-supported drilling riser |
| 09/12/1978 | US4113036 Laser drilling method and system of fossil fuel recovery |
| 09/12/1978 | US4113033 Method and arrangement for positioning a working tool to a predetermined direction and/or a predetermined point |
| 08/29/1978 | US4109870 Multiorifice structure and method of making same |
| 08/29/1978 | US4109733 Tilt preventing system for drills |
| 08/29/1978 | US4109478 Unitized conductor guide and frame for offshore drilling and production |