| Patents for E21B 7 - Special methods or apparatus for drilling (22,064) |
|---|
| 10/05/1992 | CA2065125A1 Uphole hammer |
| 10/03/1992 | CA2064682A1 Well bore drilling direction changing method |
| 10/01/1992 | DE4109871A1 Rohrvorpresseinrichtung und rohrvorpressverfahren zum verlegen von rohrleitungen mit nicht-begehbarem innendurchmesser im erdboden Pipe rough-pressing and rohrvorpressverfahren to the laying of pipelines with non-walk-in internal diameter in the ground |
| 09/30/1992 | EP0505490A1 Downhole drill bit and bit coupling |
| 09/30/1992 | EP0365612B1 Drill |
| 09/29/1992 | US5150987 Method for installing riser/tendon for heave-restrained platform |
| 09/29/1992 | US5150757 Methods and apparatus for drilling subterranean wells |
| 09/29/1992 | US5150622 Vapor probe for soil gas vapor sampler |
| 09/22/1992 | US5148880 Apparatus for drilling a horizontal controlled borehole in the earth |
| 09/22/1992 | US5148877 Apparatus for lateral drain hole drilling in oil and gas wells |
| 09/22/1992 | US5148876 Lightweight drill pipe |
| 09/22/1992 | US5148875 Method and apparatus for horizontal drilling |
| 09/22/1992 | US5148874 High-pressure pipe string for continuous fusion drilling of deep wells, process and device for assembling, propelling and dismantling it |
| 09/17/1992 | WO1992015766A1 Coring assembly for mounting on the end of a drill string |
| 09/17/1992 | DE4107834A1 Hollow displacement auger - has drive shaft extending longitudinally through its centre, with pointed tip, and has anti-buckling discs fitted at intervals along drive shaft, requiring minimum torque for control |
| 09/17/1992 | CA2106691A1 Coring assembly for mounting on the end of a drill string |
| 09/16/1992 | EP0504120A1 Method and apparatus for subsoil drilling |
| 09/16/1992 | EP0502938A1 Drilling bit irrigated by a fluid distributed by a fluidic oscillator. |
| 09/16/1992 | CN1018271B Multiple functional treatment agent for well drill liquid and its preparing method |
| 09/16/1992 | CA2056948A1 Method and apparatus for subsoil drilling |
| 09/15/1992 | US5146998 Apparatus and method for underground sampling |
| 09/15/1992 | CA1307519C Apparatus and method for installing a conduit with an arcuate bore |
| 09/09/1992 | EP0502084A1 Device for steering the foremost part of a drill pipe. |
| 09/09/1992 | CN2115396U Guiding drilling tool with eccentric stabilizer |
| 09/09/1992 | CN1064337A Method of installing well conductors |
| 09/08/1992 | US5145015 Well point |
| 09/07/1992 | CA2061784A1 Articulated coupling for use with a downhole drilling aparatus |
| 09/03/1992 | WO1992014905A2 Device for the precise directional control of capping bores |
| 09/03/1992 | WO1992014904A1 Drill head with integral impact hammers |
| 08/26/1992 | EP0499737A1 Installation of conductors for offshore well platforms |
| 08/26/1992 | CN2114025U Eccentric short piece for drilling |
| 08/25/1992 | US5141060 Method for optimizing of stabilizer positioning in a bottomhole assembly to eliminate the effects of borehole inclination |
| 08/25/1992 | US5140759 Pneumatic device for excavating and removing material |
| 08/20/1992 | WO1992014089A1 Device for trench-free replacing of pipelines |
| 08/20/1992 | WO1992014027A1 System for controlled drilling of boreholes along planned profile |
| 08/20/1992 | WO1992013682A1 Strike-action pneumatic device for trench-free replacing of pipelines |
| 08/20/1992 | WO1992013679A1 Ultrasonically generated cavitating or interrupted jet |
| 08/20/1992 | DE4204479A1 Method of laying pipes horizontally underground without trench excavation - involves use of mechanical mole driven by compressor with pipes attached to mole |
| 08/20/1992 | DE4104992A1 Vorrichtung zur zielgenauen steuerung von ueberlagerungsbohrungen A device for targeted control of about storage holes |
| 08/18/1992 | US5139097 Rock drilling apparatus |
| 08/18/1992 | US5139094 Directional drilling methods and apparatus |
| 08/12/1992 | EP0497802A1 Method for the mounting of underground pipelines. |
| 08/12/1992 | CN1063526A Wireless automatic orientation system attached to drills |
| 08/11/1992 | US5137394 Hollow steel pile, manufacturing method and pile driving method |
| 08/11/1992 | CA1306245C Drill bit with improved steerability |
| 08/06/1992 | WO1992013226A1 A tool and a process for replacement of underground ducts |
| 08/05/1992 | EP0497422A1 Downhole adjustable stabilizer |
| 08/05/1992 | EP0497421A1 Downhole adjustable bent assemblies |
| 08/05/1992 | EP0497420A1 Directional drilling methods and apparatus |
| 08/05/1992 | EP0497405A1 Steerable drill head |
| 08/05/1992 | EP0496981A2 Apparatus for laying pipelines without excavation |
| 08/05/1992 | EP0496924A1 Method and apparatus for laying underground pipes |
| 08/05/1992 | CA2054553A1 Apparatus and technique for installing an elongated rod in an earth formation |
| 08/04/1992 | US5135327 Sluice method to take TLP to heave-restrained mode |
| 08/04/1992 | US5135060 Articulated coupling for use with a downhole drilling apparatus |
| 08/04/1992 | US5135059 Borehole drilling motor with flexible shaft coupling |
| 08/04/1992 | US5135058 Crane-mounted drill and method for in-situ treatment of contaminated soil |
| 08/02/1992 | CA2060449A1 Directional drilling methods and apparatus |
| 08/02/1992 | CA2060448A1 Downhole adjustable bent assemblies |
| 07/29/1992 | EP0496481A2 Soft excavator |
| 07/29/1992 | CN1063082A Method and system for conducting offshore well operations |
| 07/29/1992 | CA2060091A1 Controllable drill head |
| 07/28/1992 | US5133625 Method and apparatus for subsurface bioremediation |
| 07/28/1992 | US5133418 Directional drilling system with eccentric mounted motor and biaxial sensor and method |
| 07/28/1992 | US5133416 Device for drilling holes in the ground |
| 07/25/1992 | WO1992013168A1 Flow pulsing apparatus for drill string |
| 07/25/1992 | CA2101329A1 Flow pulsing apparatus for drill string |
| 07/22/1992 | CN1017507B Apparatus for cutting, drilling or similar machining stone. ores or similars |
| 07/21/1992 | US5131479 Rotary drilling device comprising means for adjusting the azimuth angle of the path of the drilling tool and corresponding drilling process |
| 07/21/1992 | US5131464 Releasable electrical wet connect for a drill string |
| 07/21/1992 | CA1305470C Flow through raise boring bit |
| 07/21/1992 | CA1305469C Method and apparatus for deepwater drilling |
| 07/21/1992 | CA1305331C Method and apparatus for building pipeline and shield tunnelling machine |
| 07/15/1992 | EP0494748A2 Cementing a cylinder in a bore |
| 07/15/1992 | EP0494739A2 Directional drilling method |
| 07/15/1992 | EP0494408A1 Method and device for enlarging a well |
| 07/15/1992 | EP0494197A1 Control method and control equipment for drilling apparatus. |
| 07/15/1992 | EP0494196A1 Tunnel drilling apparatus and method to remove drill waste. |
| 07/14/1992 | US5129764 Device to feed reinforcement rods |
| 07/14/1992 | US5129464 System for controlling a rock drill |
| 07/09/1992 | WO1992011461A1 Device for remotely operating an assembly comprising a bean/needle system, and use thereof in a drill string |
| 07/09/1992 | WO1992009783A3 Apparatus for directional drilling |
| 07/08/1992 | EP0493645A1 Cutting/expanding tool |
| 07/08/1992 | EP0493459A1 Drilling apparatus and method for its control |
| 07/07/1992 | US5127481 Percussion boring machine for destructive replacement of buried pipelines |
| 07/01/1992 | EP0481079A4 Method and tool for producing a pile |
| 06/30/1992 | US5125857 Harness method for use in cold weather oil field operations and apparatus |
| 06/30/1992 | US5125828 Granite flame finishing internal burner |
| 06/30/1992 | US5125768 Method and apparatus for the production of underground pipelines |
| 06/30/1992 | US5125692 Dry pneumatic system for hard rock shaft drilling |
| 06/30/1992 | US5125464 Drilling device for the study and exploitation of the subsoil |
| 06/30/1992 | US5125463 Adjustable bent sub |
| 06/30/1992 | US5125462 Quick-change ram boring head |
| 06/30/1992 | US5125460 Pneumatically actuated horizontal drilling apparatus having a plurality of drills |
| 06/30/1992 | US5125455 Primary cementing |
| 06/30/1992 | CA1304351C Method and apparatus for cementing a production conduit within an underground arcuate bore |
| 06/29/1992 | WO1992012324A1 Device comprising two elements hinged in a plane, used in drilling equipment |
| 06/29/1992 | CA2076627A1 Device comprising two elements hinged in a plane, used in drilling equipment |
| 06/25/1992 | WO1992010637A2 Tool for making holes in the ground |
| 06/23/1992 | US5123708 Shield tunnelling machine |