| Patents for E21B 7 - Special methods or apparatus for drilling (22,064) |
|---|
| 11/15/1983 | CA1157005A1 Tool for drilling curved sections of well holes |
| 11/08/1983 | CA1156550A1 Method for improving the effective permeability of formations |
| 10/19/1983 | EP0091463A1 Underwater cutting torch. |
| 10/18/1983 | US4410055 Drilling tool |
| 10/18/1983 | US4410053 Apparatus for drilling hard material |
| 10/18/1983 | US4410049 Directional valve means for positioning machine units |
| 10/18/1983 | CA1155320A1 Drill tool |
| 10/13/1983 | WO1983003457A1 Robot |
| 10/11/1983 | US4408669 Means for drilling |
| 10/11/1983 | CA1154975A1 Offshore platform having three decks |
| 10/04/1983 | US4407374 Device for controlling the orientation of bore holes |
| 10/04/1983 | US4407373 Collapsible pedestal for drilling apparatus |
| 10/04/1983 | CA1154749A1 Device for controlling the orientation of bore holes |
| 09/27/1983 | CA1154429A1 Method and apparatus for forming lateral passageways |
| 09/20/1983 | US4405261 Subsea template levelling system and method |
| 09/20/1983 | US4405176 Method for hydraulically mining unconsolidated subterranean mineral formations using remote support |
| 09/14/1983 | EP0088608A2 Marine riser tensioner |
| 09/13/1983 | US4403890 Method of laying pipe underground and system therefor |
| 09/13/1983 | US4403667 Cable following apparatus utilizing a releasable cable gripping mechanism |
| 09/13/1983 | US4403665 Sonic system for propelling pilings, drills and the like into the earth employing screw device |
| 09/13/1983 | US4403664 Earth boring machine and method |
| 09/13/1983 | US4403658 Multiline riser support and connection system and method for subsea wells |
| 09/07/1983 | EP0087922A2 Multiterminators for riser pipes |
| 09/07/1983 | EP0087917A1 Drilling apparatus |
| 09/06/1983 | US4402639 Anchor bolt |
| 09/06/1983 | US4402551 Method and apparatus to complete horizontal drain holes |
| 09/06/1983 | US4402372 Apparatus for drilling underground arcuate paths and installing production casings, conduits, or flow pipes therein |
| 09/06/1983 | US4402371 Rotatable drilling head |
| 09/06/1983 | CA1153306A1 Hinged conductor casing for deviated driving and method therefor |
| 08/31/1983 | EP0086926A1 An arrangement for orientating a guide device when drilling curved holes in rock |
| 08/30/1983 | US4401398 Support structure for mudline suspension wellhead |
| 08/30/1983 | US4401170 Apparatus for drilling underground arcuate paths and installing production casings, conduits, or flow pipes therein |
| 08/30/1983 | US4401040 Thermal torch |
| 08/24/1983 | EP0086701A1 Drilling device |
| 08/24/1983 | EP0086567A1 Pipe replacement |
| 08/23/1983 | US4399879 Boring head |
| 08/23/1983 | US4399877 Continuous borehole telemetry system and method |
| 08/17/1983 | EP0086099A2 Guideline system for positioning subsea equipment |
| 08/16/1983 | US4398609 Apparatus for sinking wells in the ground |
| 08/16/1983 | US4398360 Pole excavating device |
| 08/16/1983 | CA1152058A1 Blast hole grooving bit and wear resistant compact |
| 08/10/1983 | EP0085444A2 Method and means for controlling the course of a bore hole |
| 08/09/1983 | US4397582 Method of creating a cold water conduit to be used in ocean thermal energy conversion systems |
| 08/09/1983 | US4397360 Method for forming drain holes from a cased well |
| 08/09/1983 | US4397355 Whipstock setting method and apparatus |
| 08/09/1983 | CA1151679A1 Device for breaking a hard material |
| 08/09/1983 | CA1151436A1 Installation of tunnel linings |
| 08/02/1983 | US4396075 Multiple branch completion with common drilling and casing template |
| 08/02/1983 | US4396073 Underground boring apparatus with controlled steering capabilities |
| 08/02/1983 | US4396072 Method and apparatus for producing a drill hole |
| 07/26/1983 | US4395163 Mining appliance |
| 07/26/1983 | US4395160 Tensioning system for marine risers and guidelines |
| 07/26/1983 | US4394881 Drill steering apparatus |
| 07/26/1983 | CA1150717A1 Method for drilling wellbores from an offshore platform |
| 07/26/1983 | CA1150522A1 Drive jaws for an underground pipe installer device |
| 07/20/1983 | EP0083899A1 Electrohydraulic control device for boring tools |
| 07/20/1983 | EP0020779B1 Earth auger |
| 07/19/1983 | US4393944 Drill rig |
| 07/12/1983 | US4392744 Method of and apparatus for determining angular and transversal displacements of shield machine and succeeding pipe |
| 07/06/1983 | EP0083334A1 Drilling arm |
| 07/05/1983 | US4391472 Core eliminator for mining, road working or earth moving machinery |
| 07/05/1983 | US4391467 System for producing a uniform rubble bed for in situ processes |
| 07/05/1983 | US4391339 Cavitating liquid jet assisted drill bit and method for deep-hole drilling |
| 07/05/1983 | US4391336 Acoustic system to guide a coal seam auger |
| 07/05/1983 | US4391209 Exothermic cutting electrode |
| 06/28/1983 | CA1148929A1 Boring head |
| 06/21/1983 | US4389071 Enhancing liquid jet erosion |
| 06/21/1983 | US4388974 Variable diameter drill rod stabilizer |
| 06/21/1983 | CA1148372A1 Apparatus for and method of supporting pipes suspended over depressions in the sea bed |
| 06/14/1983 | US4388020 Method and apparatus for advancing cylindrical bodies underground |
| 06/14/1983 | US4387776 Well case driving anvil |
| 06/07/1983 | US4386670 Boring head with extension elements |
| 06/07/1983 | US4386665 Drilling technique for providing multiple-pass penetration of a mineral-bearing formation |
| 06/07/1983 | US4386664 Method for guiding rotary drill |
| 06/01/1983 | EP0080455A2 Galleries driving machine |
| 05/31/1983 | US4385667 Cable reaming apparatus |
| 05/24/1983 | US4384625 Reduction of the frictional coefficient in a borehole by the use of vibration |
| 05/24/1983 | US4384624 Earth boring head |
| 05/24/1983 | US4384616 Method of placing pipe into deviated boreholes |
| 05/24/1983 | US4384483 Preventing buckling in drill string |
| 05/17/1983 | US4383583 Soil sampling tool |
| 05/17/1983 | CA1146368A1 Cutter configuration for efficient ice disaggregation and clearing |
| 05/17/1983 | CA1146366A1 Underground pipe pusher |
| 05/10/1983 | US4382419 Floating vessel with moon well and ice guard therefor |
| 04/28/1983 | WO1983001480A1 Underwater cutting torch |
| 04/26/1983 | US4381038 Raise bit with cutters stepped in a spiral and flywheel |
| 04/26/1983 | CA1145148A1 Method and apparatus for removing deflection from plastic pipes |
| 04/19/1983 | CA1144916A1 Drill steering apparatus |
| 04/12/1983 | US4379657 Riser tensioner |
| 04/12/1983 | US4379493 Method and apparatus for preventing wireline kinking in a directional drilling system |
| 04/12/1983 | CA1144619A1 Push drill guidance indication apparatus |
| 03/22/1983 | CA1143399A1 Pressure seal for pumping instruments through drill rod |
| 03/09/1983 | EP0073610A2 Method and apparatus for drilling a well bore |
| 02/22/1983 | US4374547 Crank connector for directional drilling |
| 02/15/1983 | US4373592 Rotary drilling drill string stabilizer-cuttings grinder |
| 02/08/1983 | US4372401 Drill tool |
| 02/01/1983 | US4371046 Apparatus for and method of drilling a hole into the ground |
| 02/01/1983 | US4371041 Multi-purpose mobile drill rig |
| 01/25/1983 | CA1140106A1 Apparatus and process for drilling underground arcuate paths and installing production casings, conduits, or flow pipes therein |
| 01/25/1983 | CA1139959A1 Apparatus for automatic bolting in rock reinforcement |