| Patents for E21B 7 - Special methods or apparatus for drilling (22,064) |
|---|
| 02/12/1985 | CA1182442A1 Method and apparatus for setting and orienting a whipstock in a well conduit |
| 02/05/1985 | US4497664 Erosion of a solid surface with a cavitating liquid jet |
| 02/05/1985 | US4497381 Earth drilling apparatus and method |
| 02/05/1985 | US4497378 Drilling and bolting turret |
| 02/05/1985 | US4497372 Anti-twist control system for deviated conductor driving systems |
| 02/05/1985 | CA1182104A1 Method and apparatus for forming and using a bore hole |
| 02/05/1985 | CA1182040A1 Remotely replaceable guidepost method and apparatus |
| 01/29/1985 | US4496012 Method for improving cuttings transport in deviated wells |
| 01/29/1985 | US4496011 Tool for forming earth holes having fixed walls and method therefor |
| 01/29/1985 | US4496006 Cylinder displaceable power swivel for a portable drilling apparatus _and a process therefor |
| 01/29/1985 | US4495803 Method of monitoring the growth of cuttings beds in angled well bores |
| 01/29/1985 | CA1181680A1 Deep water riser system for offshore drilling |
| 01/23/1985 | EP0131771A1 Drilling device, especially for underground mining |
| 01/16/1985 | EP0131451A2 Improvements in drilling equipment |
| 01/15/1985 | US4493382 Vehicle-mounted earth drilling apparatus |
| 01/15/1985 | US4493380 Hydraulic straight hole drill collar |
| 01/15/1985 | CA1181063A1 Apparatus and method for arcuate path drilling |
| 01/09/1985 | EP0130969A2 Drilling and bolting apparatus |
| 01/08/1985 | US4492276 Down-hole drilling motor and method for directional drilling of boreholes |
| 01/08/1985 | US4492274 Light weight underground pipe or cable installing device |
| 01/08/1985 | CA1180770A1 Exothermic cutting electrode having a central fluid oxidant passage tube |
| 12/18/1984 | US4488605 Drill assembly for forming a hole |
| 12/12/1984 | EP0127859A2 Vibration generating apparatus |
| 12/11/1984 | US4487527 Subsea wellhead assembly |
| 12/11/1984 | US4487525 Propulsion pipe laying system |
| 12/11/1984 | US4487150 Riser recoil preventer system |
| 12/11/1984 | CA1179254A1 Subsea caisson |
| 12/06/1984 | WO1984004778A1 Vertical hole-boring machine |
| 12/06/1984 | WO1984004777A1 A safety arrangement in gas-cutting lances |
| 12/05/1984 | EP0127126A1 Sub for connection in a drill string |
| 12/04/1984 | US4486124 Pipe laying method and apparatus |
| 12/04/1984 | US4485879 Downhole motor and method for directional drilling of boreholes |
| 12/04/1984 | US4485570 Apparatus for mounting a drilling machine on an excavator bucket |
| 11/28/1984 | EP0126268A1 Apparatus for generating pulsatorily active mechanical and hydraulic energy for the disintegration of rocks |
| 11/27/1984 | US4484641 Tubulars for curved bore holes |
| 11/27/1984 | US4484640 Tool for formation of holes in macroporous compressible soils |
| 11/27/1984 | US4484637 Positioning control system for rock drill support apparatus |
| 11/27/1984 | CA1178530A1 Positioning of deflection wedges |
| 11/22/1984 | WO1984004562A1 Drilling equipment |
| 11/22/1984 | WO1984004554A1 Device for digging wells in the soil |
| 11/20/1984 | US4483399 Method of deep drilling |
| 11/13/1984 | US4482021 Soil sampler |
| 11/13/1984 | CA1177819A1 Articulated coupling |
| 11/06/1984 | US4480944 Offshore drilling of large diameter holes in rock formations |
| 11/06/1984 | US4480525 Control device for forward and backward travel of automatic _pneumatic percussion boring devices |
| 10/30/1984 | US4479656 Means for sealing a gap around a conductor pipe in an offshore oil platform |
| 10/30/1984 | US4479541 Method and apparatus for recovery of oil, gas and mineral deposits by panel opening |
| 10/30/1984 | US4479540 Gasification of coal |
| 10/30/1984 | CA1177059A1 Tool forming a hole in macroporous compressible soil and a method of forming a hole by the same tool |
| 10/30/1984 | CA1177055A1 Variable angle elbow fitting for deviated well drilling |
| 10/24/1984 | EP0122823A1 Automatic compensating device for the magnetic effect of drill collars |
| 10/24/1984 | EP0122540A2 Method and apparatus for thrusting a shield for use in tunneling |
| 10/23/1984 | US4478287 For use with a floating drilling vessel |
| 10/17/1984 | EP0122103A1 Machine for boring tunnels |
| 10/16/1984 | US4477060 Underwater cutting tool |
| 10/16/1984 | US4476943 Drilling equipment with adaptor for steering long boreholes |
| 10/16/1984 | US4476940 Portable drilling apparatus |
| 10/09/1984 | US4475605 Turbodrill |
| 10/09/1984 | US4475604 Mobile machine for subterranean installation of piping and the like |
| 10/02/1984 | US4474253 Apparatus for producing an upwardly directed drill hole |
| 10/02/1984 | US4474252 Method and apparatus for drilling generally horizontal bores |
| 10/02/1984 | US4474251 Enhancing liquid jet erosion |
| 10/02/1984 | US4474250 Measuring while drilling |
| 10/02/1984 | US4474243 for use in conducting offshore drilling operations |
| 09/26/1984 | EP0119375A1 Anchoring bolt drilling and setting device, especially for mining |
| 09/26/1984 | EP0119268A1 Hydrojet drilling means and method |
| 09/18/1984 | US4472002 Retractable bit guide for a drilling and bolting slide |
| 09/18/1984 | US4471843 Method and apparatus for rotary drill guidance |
| 09/11/1984 | US4470469 Swivel head for drilling and mining tool |
| 09/11/1984 | US4470468 Offshore drilling of large diameter holes in rock formations |
| 09/11/1984 | CA1174230A1 Turbodrill |
| 09/04/1984 | US4469181 Adjustable conductor guide assembly for sub-sea wells and methods and tools for adjustment thereof |
| 09/04/1984 | CA1173822A1 Apparatus for drilling straight portion of a deviated hole |
| 08/28/1984 | CA1173427A1 Tool for formation of holes in macroporous compressible soils |
| 08/28/1984 | CA1173426A1 Tool for forming earth holes having fixed walls and method therefor |
| 08/28/1984 | CA1173358A1 Submerged buoyant offshore drilling and production tower |
| 08/21/1984 | US4466487 Method and apparatus for preventing vertical movement of subsea downhole tool string |
| 08/14/1984 | US4465147 Method and means for controlling the course of a bore hole |
| 08/14/1984 | US4465146 Tubular drill string member with contoured circumferential surface |
| 08/14/1984 | US4465144 Drill rig mast structure |
| 08/14/1984 | US4465140 Method for the magnetization of well casing |
| 08/14/1984 | CA1172544A1 Equipment adaptable to telescoping service line |
| 08/07/1984 | US4463814 Down-hole drilling apparatus |
| 07/31/1984 | US4462468 Ram head for self-driven pneumatic ram drills |
| 07/25/1984 | EP0114146A2 Universal drilling apparatus equipped with means for rapid raising of the drill string |
| 07/25/1984 | EP0114016A1 Drill bit for combined rotary and jet drilling |
| 07/24/1984 | US4461359 Rotary drill indexing system |
| 07/10/1984 | US4458767 Method for directionally drilling a first well to intersect a second well |
| 07/10/1984 | US4458766 Hydrojet drilling means |
| 07/10/1984 | US4458765 Tool for forming a hole in macroporous compressible soil |
| 07/05/1984 | WO1984002555A1 Plant for making bore-holes in the side walls of underground exploitation chambers of small width |
| 07/03/1984 | US4457988 Electrode of solid vein material in earth; mining |
| 07/03/1984 | US4457212 Hydraulic ram |
| 06/26/1984 | US4456082 Expandable rock bit |
| 06/26/1984 | US4456080 Stabilizer method and apparatus for earth-boring operations |
| 06/26/1984 | US4456079 Apparatus and method for taking soil samples |
| 06/26/1984 | US4456078 Earth boring method and apparatus |
| 06/26/1984 | US4456072 Ice island structure and drilling method |
| 06/26/1984 | CA1169627A1 Drilling rig mast apparatus |
| 06/20/1984 | EP0111117A1 Drilling tool for making an undercut inside a hole, and tiltable tool inserted into that drilling tool |