| Patents for E21B 4 - Drives for drilling, used in the borehole (6,032) |
|---|
| 06/13/1984 | EP0110182A2 Down-hole drilling apparatus |
| 06/12/1984 | US4453604 Turbodrills |
| 06/05/1984 | US4452472 Tubular safety joint for drill strings |
| 06/05/1984 | US4452322 Drilling device for drilling a core in deep drill holes |
| 06/05/1984 | US4452307 For a wire line and impact device in loosening oil well tubing and casing |
| 05/30/1984 | EP0109907A2 Device for maintaining a boring machine in a vertical position |
| 05/30/1984 | EP0109699A2 Down-hole motor and method for directional drilling of boreholes |
| 05/22/1984 | US4449953 Articulated coupling |
| 05/22/1984 | CA1167872A1 Bore hole mining |
| 05/15/1984 | US4448551 Method and apparatus for shaft support for turbine pumps |
| 05/15/1984 | CA1167433A1 Well jar |
| 05/08/1984 | US4446935 Intermittent high-drag oil well drilling bit |
| 05/08/1984 | US4446929 Fluid operated rock drill hammer |
| 05/08/1984 | CA1167023A1 Device for producing boreholes in coal or the like |
| 05/01/1984 | CA1166628A1 Rotary drilling drill string stabilizer-cuttings grinder |
| 04/17/1984 | US4442908 Tool for drilling curved sections of well holes |
| 04/17/1984 | US4442896 Treatment of underground beds |
| 04/03/1984 | US4440245 Gravity percussion drill with upper end cocking spring and method of assembly |
| 04/03/1984 | US4440242 Device for producing boreholes in coal or the like |
| 03/28/1984 | EP0103913A2 Down-hole motor and method for directional drilling of boreholes |
| 03/13/1984 | US4436168 Thrust generator for boring tools |
| 03/13/1984 | CA1163449A1 Cable reaming apparatus and method |
| 03/06/1984 | US4434863 Well tool |
| 03/06/1984 | US4434862 In a gas turbine drilling device for use in a borehole forming operation |
| 03/06/1984 | CA1163262A1 Hinge joint of bottom-hole helical planetary hydraulic machine |
| 02/28/1984 | CA1162909A1 Earth piercing tool |
| 02/21/1984 | US4432423 Apparatus for extended straight line drilling from a curved borehole |
| 02/01/1984 | EP0099594A2 Rock drills |
| 01/31/1984 | CA1161426A1 Progressing cavity motor governing system |
| 01/31/1984 | CA1161425A1 Bottom hole motor for driving rock-breaking tool |
| 01/24/1984 | US4427079 Intermittently rotatable down hole drilling tool |
| 12/27/1983 | US4422823 Turbodrill |
| 12/21/1983 | EP0096639A1 Drilling hammer |
| 12/13/1983 | US4420187 Stationary drill string rotary hydraulic mining tool and method of hydraulic mining |
| 11/29/1983 | CA1157848A1 Hydraulic drilling motor for well drilling |
| 11/22/1983 | CA1157458A1 Bearing system for a downhole motor |
| 11/15/1983 | US4415823 Generator for the production of electrical energy |
| 11/15/1983 | US4415316 Down hole motor |
| 11/15/1983 | US4415047 Downhole case driving apparatus for impact drills |
| 11/15/1983 | CA1157006A1 Bearing system for a downhole motor |
| 11/15/1983 | CA1157005A1 Tool for drilling curved sections of well holes |
| 10/18/1983 | US4410054 Well drilling tool with diamond radial/thrust bearings |
| 10/18/1983 | US4410053 Apparatus for drilling hard material |
| 10/11/1983 | US4408670 Impact cam subassembly for drills |
| 10/04/1983 | US4407374 Device for controlling the orientation of bore holes |
| 10/04/1983 | CA1154749A1 Device for controlling the orientation of bore holes |
| 09/27/1983 | US4406332 Rotary earth boring tool |
| 09/14/1983 | EP0088705A1 Down-the-hole pneumatic hammer |
| 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 | CA1153759A1 Drilling device for drilling a core in deep drill holes |
| 09/06/1983 | US4402370 Valveless pneumatic hammer |
| 09/06/1983 | CA1153359A1 Roller bearing non-rotating stabilizer |
| 08/16/1983 | US4398609 Apparatus for sinking wells in the ground |
| 08/10/1983 | EP0085444A2 Method and means for controlling the course of a bore hole |
| 08/09/1983 | US4397619 Hydraulic drilling motor with rotary internally and externally threaded members |
| 08/02/1983 | US4396073 Underground boring apparatus with controlled steering capabilities |
| 08/02/1983 | US4396072 Method and apparatus for producing a drill hole |
| 08/02/1983 | US4396071 Mud by-pass regulator apparatus for measurement while drilling system |
| 08/02/1983 | CA1151148A1 Double acting hydraulic mechanism |
| 08/02/1983 | CA1151146A2 Apparatus and process for drilling underground arcuate paths and installing production casings, conduits, or flow pipes therein |
| 08/02/1983 | CA1151028A1 Valveless pneumatic hammer |
| 08/02/1983 | CA1151027A1 Free piston machines |
| 07/26/1983 | US4394883 Well jar |
| 07/19/1983 | CA1150189A1 Chisel for a crust breaking facility and method for operation of the same |
| 07/13/1983 | EP0083507A2 Fluid operated hammer having drill bit clearance means |
| 07/05/1983 | US4391547 Quick release downhole motor coupling |
| 06/22/1983 | EP0081897A1 Percussive drills |
| 06/21/1983 | US4388973 Direct drill bit drive |
| 06/14/1983 | US4387776 Well case driving anvil |
| 06/14/1983 | US4387774 Time recorder for in-hole motors |
| 06/07/1983 | US4386666 In-hole motor drill with locking bit clutch |
| 06/01/1983 | EP0080218A2 Method and means for transmitting data through a drill string in a borehole |
| 05/31/1983 | US4385667 Cable reaming apparatus |
| 05/24/1983 | US4384747 Bearing for a shaft cutter stabilizer |
| 05/17/1983 | US4383581 Tool for drilling boreholes |
| 05/10/1983 | CA1146155A1 Drilling method and apparatus |
| 05/03/1983 | US4381867 Automatically positionable mechanical shaft seal |
| 05/03/1983 | CA1145644A1 Fluid pressure actuated by-pass and relief valve |
| 04/26/1983 | US4381038 Raise bit with cutters stepped in a spiral and flywheel |
| 04/19/1983 | US4380492 Method of using a chisel for a crust breaking facility |
| 02/15/1983 | US4373592 Rotary drilling drill string stabilizer-cuttings grinder |
| 02/08/1983 | US4372400 Apparatus for applying pressure to fluid seals |
| 02/01/1983 | CA1140355A1 Planetary mechanism |
| 01/26/1983 | EP0070335A1 Pressure compensated shaft seal |
| 01/20/1983 | WO1983000183A1 Hydraulic down-the-hole rock drill |
| 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 | CA1139657A1 Metal-to-metal face seal |
| 01/12/1983 | EP0069530A2 Mud by-pass regulator apparatus for measurement while drilling system |
| 01/11/1983 | CA1139298A1 Hydraulically powered drilling sub for deepwell drilling |
| 01/11/1983 | CA1139297A1 Turbo-coring device equipped with a following pipe |
| 12/28/1982 | US4365676 Method and apparatus for drilling laterally from a well bore |
| 12/28/1982 | CA1138417A1 Solids diverter for a downhole drilling motor |
| 11/30/1982 | US4361195 Double acting hydraulic mechanism |
| 11/30/1982 | US4361194 Bearing system for a downhole motor |
| 11/11/1982 | WO1982003886A1 Hinged joint of screw-type planetary hydraulic borehole machine |
| 11/09/1982 | CA1135313A1 Antifriction device and bearing, particularly for a turbine |
| 11/09/1982 | CA1135182A1 Downhole steam apparatus |