| Patents for E21B 7 - Special methods or apparatus for drilling (22,064) |
|---|
| 01/18/1983 | US4369002 Method of emptying pipes driven into earth in nontrench laying and device for carrying same into effect |
| 01/18/1983 | US4368787 Arrangement for removing borehole cuttings by reverse circulation with a downhole bit-powered pump |
| 01/18/1983 | US4368786 Downhole drilling apparatus |
| 01/18/1983 | US4368785 Well point and method of driving same |
| 01/18/1983 | US4368602 Mobile drilling rig having a retractable guiding mount or mast |
| 01/11/1983 | US4367981 Fluid pressure-tensioned slip joint for drilling riser |
| 01/11/1983 | CA1139297A1 Turbo-coring device equipped with a following pipe |
| 12/28/1982 | US4365677 Earth boring apparatus |
| 12/28/1982 | US4365676 Method and apparatus for drilling laterally from a well bore |
| 12/22/1982 | EP0067349A1 Exothermic cutting electrode |
| 12/21/1982 | US4364540 Support-arm assembly for a drill or borer, particularly for subterranean applications |
| 12/21/1982 | US4364441 Hole cleaning device for augers |
| 12/15/1982 | EP0067079A1 Process and installation for the underground gasification of coal |
| 12/14/1982 | US4363568 Conductors for a guyed tower and method for installing same |
| 12/14/1982 | US4363451 Device for breaking a hard material |
| 12/07/1982 | US4362217 Downhole shearers |
| 12/07/1982 | CA1137122A1 Dredge for excavating holes or channels in a water bed |
| 11/30/1982 | US4361197 Blast hole grooving bit and wear resistant compact |
| 11/30/1982 | US4361193 Method and arrangement for improving cuttings removal and reducing differential pressure sticking of drill strings in wellbores |
| 11/30/1982 | US4361192 Borehole survey method and apparatus for drilling substantially horizontal boreholes |
| 11/24/1982 | EP0064978A1 An acoustic system to guide a coal seam auger |
| 11/23/1982 | CA1136118A1 Combined impact and pressure liquid rock drill |
| 11/16/1982 | US4359115 Novel rotary drill bits and drilling process |
| 11/16/1982 | US4359114 Raise drill bit inboard cutter assembly |
| 11/16/1982 | US4359110 Variable-length sampling device |
| 11/16/1982 | US4359095 Well support system |
| 11/09/1982 | CA1135251A1 Method and apparatus for compensating well control instrumentation for the effect of vessel heave |
| 11/03/1982 | EP0063679A2 Drilling device for making holes with under-cutting |
| 11/02/1982 | CA1134807A1 Low cutter load raise head |
| 11/02/1982 | CA1134806A1 Convertible raised drill apparatus |
| 10/26/1982 | US4355477 Working machine with improved jib section |
| 10/26/1982 | CA1134257A1 System for measuring downhole drilling forces |
| 10/19/1982 | US4354560 Apparatus for drilling enlarged boreholes |
| 10/19/1982 | US4354559 Enlarged borehole drilling method and apparatus |
| 10/19/1982 | US4354558 Apparatus and method for drilling into the sidewall of a drill hole |
| 10/19/1982 | CA1133954A1 Method for drilling hard material |
| 10/13/1982 | EP0062481A2 Conduits to be used in association with ocean thermal energy conversion systems |
| 10/13/1982 | EP0062111A2 Enhancing liquid jet erosion |
| 10/12/1982 | US4353419 Method for manufacturing a well production and sand screen assembly |
| 10/12/1982 | US4353417 Method for producing a well in an unconsolidated formation |
| 10/05/1982 | US4352595 Apparatus for and method of supporting pipe suspended over depressions in the sea bed |
| 10/05/1982 | US4352594 Method and apparatus for constructing underground structure |
| 09/29/1982 | EP0061070A1 Telescoping boom supported flip-flop service line |
| 09/29/1982 | EP0060840A1 Method and apparatus for running and cementing pipe |
| 09/28/1982 | US4351625 Apparatus for automatic bolting in rock reinforcement |
| 09/28/1982 | US4351261 Riser recoil preventer system |
| 09/28/1982 | CA1132530A1 Articulate support arm for drilling jar |
| 09/22/1982 | EP0060507A1 Equipment adaptable to telescoping service line |
| 09/21/1982 | US4350203 Well production system to prevent cave-in and sloughing in unconsolidated formations |
| 09/15/1982 | EP0060124A1 Method of laying pipe underground and system therefor |
| 09/14/1982 | CA1131665A1 Hydraulic mining tool apparatus |
| 09/14/1982 | CA1131613A1 Earth boring apparatus |
| 09/14/1982 | CA1131612A1 Non-rotating stabilizer for raise boring |
| 09/07/1982 | US4347692 Portable drilling rig |
| 09/07/1982 | CA1131209A1 Wellbore drilling technique using eccentric tool joints to mitigate pressure-differential sticking |
| 08/31/1982 | US4346766 Drill cradle with elongated slide track |
| 08/24/1982 | US4345433 Trapped air method of generating rotary power in a deepsea environment |
| 08/17/1982 | US4344599 Rock drill boom structure |
| 08/10/1982 | US4343370 Turbo-coring device equipped with a following pipe |
| 08/10/1982 | US4343369 Apparatus for drilling straight portion of a deviated hole |
| 08/10/1982 | US4343367 Drilling machine positioning arrangement |
| 08/10/1982 | CA1129446A1 Method and apparatus for drilling and mining |
| 08/04/1982 | EP0057089A1 Pipe embedding method and system |
| 08/03/1982 | CA1128927A1 Drilling stabilizer |
| 08/03/1982 | CA1128925A1 Variable angle bent sub for directional drilling |
| 07/28/1982 | EP0056506A1 Stabilizing tool for earth boring drill strings and method of using same |
| 07/22/1982 | WO1982002417A1 Method and device for changing the direction of a drill hole |
| 07/20/1982 | US4340122 Mounted drilling apparatus |
| 07/20/1982 | US4340120 Annular casing hammer |
| 07/20/1982 | CA1128034A1 Kelly drive bushing adapter |
| 07/13/1982 | US4339005 Curved well conductors for offshore platform |
| 07/06/1982 | US4337899 High pressure liquid jet nozzle system for enhanced mining and drilling |
| 07/06/1982 | CA1127073A1 Apparatus for drilling into the sidewall of a drill hole |
| 07/06/1982 | CA1126982A1 Bumper mounted soil sampling device |
| 06/30/1982 | EP0018391B1 Apparatus for automatic bolting in rock reinforcement |
| 06/29/1982 | US4336849 Earth drilling device for extracting earth samples |
| 06/22/1982 | US4335793 Process and apparatus for boring sites |
| 06/22/1982 | CA1126153A1 Fluid flow restrictor valve for a drill hole coring tool |
| 06/22/1982 | CA1126038A1 Vertically moored platform anchoring |
| 06/15/1982 | US4334584 Method and apparatus for installing a sea-floor cellar in a subsea bottom having compacted soil conditions |
| 06/15/1982 | US4334580 Continuous borehole formed horizontally through a hydrocarbon producing formation |
| 06/10/1982 | WO1982001908A1 An acoustic system to guide a coal seam auger |
| 06/09/1982 | EP0053480A1 Improvements in the replacement of mains |
| 06/08/1982 | US4333541 Bumper mounted soil sampling device |
| 06/08/1982 | US4333539 Method for extended straight line drilling from a curved borehole |
| 06/08/1982 | CA1124982A1 Angle drilling feature for rotary blast hole drills |
| 06/01/1982 | CA1124707A2 Method and device for setting the direction and/or the inclination of an elongated rock drilling apparatus |
| 05/18/1982 | US4330155 Bore hole mining |
| 05/18/1982 | US4329883 Apparatus for collecting deep-sea sediment pore water |
| 05/18/1982 | CA1123728A1 Method of extracting liquid and gaseous fuel from oil shale and tar-sand |
| 05/11/1982 | US4329077 Underground pipe pusher |
| 05/11/1982 | CA1123419A1 Fluid jet drilling nozzle and method |
| 05/05/1982 | EP0050954A1 Boring tools |
| 05/04/1982 | CA1122965A1 Apparatus and method for directional drilling |
| 04/27/1982 | US4326595 Method for drilling deviated wells into an offshore substrate |
| 04/15/1982 | WO1982001211A1 Method and apparatus for running and cementing pipe |
| 04/13/1982 | US4324297 Steering drill string |
| 04/13/1982 | CA1121796A1 Helicopter portable earth drilling apparatus |
| 04/06/1982 | US4323129 Hole digging apparatus and method |
| 03/30/1982 | US4322180 Method and apparatus for advancing cylindrical bodies underground |