| Patents for E21B 7 - Special methods or apparatus for drilling (22,064) |
|---|
| 08/29/1978 | CA1037462A1 Apparatus and process for drilling underground arcuate paths utilizing directional drill and following liner |
| 08/22/1978 | US4108259 Raise drill with removable stem |
| 08/22/1978 | US4108258 Rock drilling apparatus with noise reducing drill rod cover |
| 08/22/1978 | US4108256 Sliding stabilizer assembly |
| 08/22/1978 | US4108255 Well drilling apparatus |
| 08/22/1978 | US4108254 Drilling apparatus |
| 08/15/1978 | US4106575 Tool string and means for supporting and rotating the same |
| 08/15/1978 | US4106574 Method for establishing high permeability flow path between boreholes |
| 08/08/1978 | US4105081 Rock-drilling and bolt-setting apparatus |
| 08/08/1978 | US4105079 Device for launching percussion ground borers |
| 08/01/1978 | US4103748 Method for inhibiting the wear in a well casing |
| 07/25/1978 | US4102413 Rock drilling apparatus and method |
| 07/25/1978 | US4102412 Apparatus and method for placing explosives in submerged rock |
| 07/25/1978 | US4102409 Rock drilling machine |
| 07/25/1978 | US4102094 Bottom brace for crane |
| 07/18/1978 | US4100981 Earth boring apparatus for geological drilling and coring |
| 07/18/1978 | US4100980 Self-propelled pneumatic burrowing device |
| 07/18/1978 | US4100979 Pneumatic percussion boring device |
| 07/18/1978 | US4100973 Side load protection arrangement for rotating equipment |
| 07/18/1978 | US4100972 Displacement hammer apparatus for sinking and lining boreholes |
| 07/18/1978 | US4100754 Method and apparatus for installing pipes in off-shore locations |
| 07/11/1978 | US4099584 Flame jet tool for drilling to great depths |
| 07/11/1978 | US4099583 Gas lift system for marine drilling riser |
| 07/11/1978 | US4099582 Drilling fluid compensation device |
| 07/11/1978 | US4099579 Drill mounting device for backhoe attachments |
| 07/11/1978 | US4099560 Open bottom float tension riser |
| 07/04/1978 | US4098353 Rotatable mine drilling apparatus |
| 06/27/1978 | US4096608 Drill string holder |
| 06/20/1978 | US4095656 Raise bore drilling |
| 06/20/1978 | US4095655 Earth penetration |
| 06/13/1978 | US4094364 Percussion drill rod |
| 06/13/1978 | US4094360 Self-locking mule shoe |
| 05/30/1978 | US4091631 System and method for installing production casings |
| 05/30/1978 | US4091630 Intermediate sleeve for installing pipeline by propelling pipes underground |
| 05/30/1978 | CA1032154A1 Exploration boring method and use thereof |
| 05/23/1978 | US4090572 Method and apparatus for laser treatment of geological formations |
| 05/09/1978 | US4088289 Mast support arrangement for portable drill rig |
| 05/02/1978 | US4086971 Riser pipe inserts |
| 05/02/1978 | US4086969 Crowd for kelly bar |
| 04/18/1978 | US4084648 Process for the high-pressure grouting within the earth and apparatus adapted for carrying out same |
| 04/18/1978 | US4084639 Electrode well for electrically heating a subterranean formation |
| 04/11/1978 | US4083416 Collapsible cutterhead for drilling upward |
| 04/11/1978 | US4083405 Well drilling method and apparatus therefor |
| 04/04/1978 | US4082362 Apparatus for coal mining in-cutting and out-cutting |
| 04/04/1978 | US4082248 Pipe driving apparatus |
| 03/28/1978 | US4081040 Method and apparatus for thin-walled tube sampling of soils |
| 03/21/1978 | US4079890 Device for building up high pulse liquid pressures |
| 03/21/1978 | US4079792 Mine roof support for a mobile drilling machine |
| 03/14/1978 | US4078619 Reversible air-operated apparatus of the percussive type for driving holes in ground by compacting same |
| 03/14/1978 | US4078617 Portable drill rig for boring underground inverted arcuate paths |
| 03/07/1978 | US4077671 Subterranean drilling and slurry mining method |
| 03/07/1978 | US4077657 Adjustable bent sub |
| 03/07/1978 | US4077481 Subterranean mining apparatus |
| 02/28/1978 | US4076311 Hydraulic mining from tunnel by reciprocated pipes |
| 02/28/1978 | US4076087 Hole reamer |
| 02/28/1978 | US4076084 Oriented drilling tool |
| 02/28/1978 | US4076082 Thermal drilling device |
| 02/21/1978 | US4074778 Square hole drill |
| 02/21/1978 | US4074773 Hole drilling machine |
| 02/14/1978 | US4073353 Sonic large bore earth auger |
| 02/14/1978 | US4073352 Raise bore drilling machine |
| 02/14/1978 | US4073351 Burners for flame jet drill |
| 02/07/1978 | US4072200 Surveying of subterranean magnetic bodies from an adjacent off-vertical borehole |
| 01/31/1978 | USRE29526 Directional drilling apparatus |
| 01/31/1978 | US4071100 Method of making holes of selected external configuration in preferably rock or ground formation, and a drilling machine for carrying out the method |
| 01/31/1978 | US4071098 Cutter mounting extension apparatus |
| 01/31/1978 | US4071097 Process and apparatus for supersonic drilling in underground rocky strata |
| 01/31/1978 | US4071095 Methods of and apparatus for winning reef |
| 01/31/1978 | US4071087 Well construction |
| 01/31/1978 | US4070948 Pneumatic impact devices |
| 01/24/1978 | US4069878 Raise drilling bit with detachable stem |
| 01/17/1978 | US4069407 Underwater cutting rod |
| 01/17/1978 | US4068730 Drill collar |
| 01/17/1978 | US4068729 Apparatus for multiple wells through a single caisson |
| 01/17/1978 | US4068728 Hydraulic flow divider for a mining vehicle |
| 01/17/1978 | US4068487 Method and apparatus for conducting subaqueous operations in ice conditions |
| 01/10/1978 | US4067617 Subterranean drilling and slurry mining |
| 01/10/1978 | US4067404 Angle adjustment sub |
| 01/10/1978 | US4067398 Ring drilling rig |
| 01/10/1978 | US4067200 Device and method for installing ducts in holes produced by soil piercing tool |
| 01/03/1978 | US4066138 Earth boring apparatus employing high powered laser |
| 01/03/1978 | US4066137 Flame jet tool for drilling cross-holes |
| 01/03/1978 | US4066135 Telescopic rock drill mounting |
| 12/20/1977 | US4063602 Drilling fluid diverter system |
| 12/13/1977 | US4062412 Flexible shaft drilling system |
| 12/13/1977 | US4062196 Method of forcibly introducing a curved steel pipe into the ground and a machine therefor |
| 11/29/1977 | US4060140 Method and apparatus for preventing debris build-up in underwater oil wells |
| 11/22/1977 | US4059166 Subterranean drilling and slurry mining |
| 11/22/1977 | US4059164 Self-stabilizing drilling tool |
| 11/22/1977 | US4059148 Pressure-compensated dual marine riser |
| 11/22/1977 | US4059008 Method and device for pore pressure sounding |
| 11/15/1977 | US4058176 Tool and method for drilling a hole with an increased cross-sectional area |
| 11/08/1977 | US4057117 Auger spoil disposal box |
| 11/08/1977 | US4057115 Flexible shaft for a roof drill |
| 11/08/1977 | US4057114 Hand-held ice auger |
| 11/01/1977 | US4056151 Excavating tool |
| 10/25/1977 | US4055332 Cutting torch arrangement |
| 10/25/1977 | US4055224 Method for forming an underground cavity |
| 10/18/1977 | US4054104 Submarine well drilling and geological exploration station |
| 10/11/1977 | US4053244 Compression coupling means for a raise boring head |