| Patents for E21B 7 - Special methods or apparatus for drilling (22,064) |
|---|
| 08/22/2002 | US20020112892 Rotary steering tool system for directional drilling |
| 08/22/2002 | US20020112887 Directional borehole drilling system and method |
| 08/22/2002 | US20020112857 Method and apparatus for providing plural flow paths at a lateral junction |
| 08/22/2002 | US20020112338 Profile formation |
| 08/22/2002 | DE10108292A1 Bohrvorrichtung Drilling device |
| 08/21/2002 | EP1233144A2 Locating and orienting system and use in multilateral wells |
| 08/21/2002 | EP1233142A2 Guide bushing and use in multilateral wells |
| 08/20/2002 | US6438495 Method for predicting the directional tendency of a drilling assembly in real-time |
| 08/20/2002 | US6438453 Multiblock robot system |
| 08/20/2002 | US6435776 Method and apparatus for forming piles in place |
| 08/20/2002 | US6435286 Apparatus and method for detecting a location and an orientation of an underground boring tool |
| 08/20/2002 | US6435058 Rotary drill bit design method |
| 08/20/2002 | CA2372287A1 Method and apparatus for connecting a main well bore and a lateral branch |
| 08/15/2002 | US20020110425 Method and apparatus for the trenchless laying of pipework underground |
| 08/15/2002 | US20020108787 Boring apparatus |
| 08/15/2002 | US20020108746 Method and system for accessing subterranean zones from a limited surface area |
| 08/13/2002 | US6431292 Device for drilling and draining holes in soil or rock |
| 08/13/2002 | US6431285 Apparatus for drilling an offshore underwater well |
| 08/13/2002 | US6431283 Method of casing multilateral wells and associated apparatus |
| 08/13/2002 | CA2255288C Apparatus and method for stabilized downhole drilling motor |
| 08/13/2002 | CA2072228C Steerable rotary drilling systems |
| 08/08/2002 | WO2002061319A1 Bundle of pipes and method for parallel arrangement of pipes according to a bore and swivel method |
| 08/08/2002 | WO2002061238A1 Method and system for accessing a subterranean zone from a limited surface area |
| 08/08/2002 | WO2002061233A1 Method and system for accessing subterranean zones from a limited surface area |
| 08/08/2002 | US20020104685 Method of and system for controlling directional drilling |
| 08/08/2002 | DE19929893C2 Verfahren zum grabenlosen Verlegen von Rohrleitungen und Kabeln A method for grave laying of pipelines and cables |
| 08/08/2002 | DE10104336A1 Vorrichtung zum gelenkten Horizontalbohren mit Sender und Empfänger Apparatus for guided horizontal drilling with transmitter and receiver |
| 08/08/2002 | DE10065532C1 Vorrichtung und Verfahren zum Austauschen von Leitungen A device and method for exchanging lines |
| 08/08/2002 | CA2805835A1 Method and system for accessing a subterranean zone from a limited surface area |
| 08/08/2002 | CA2436703A1 Bundle of tubes and proceedings for the parallel laying of tubes according to the fluid-assisted drilling method |
| 08/07/2002 | EP1228290A1 Drilling formation tester, apparatus and methods of testing and monitoring status of tester |
| 08/07/2002 | EP0993538A4 Downhole mud motor |
| 08/06/2002 | US6427792 Active gauge cutting structure for earth boring drill bits |
| 08/06/2002 | US6427783 Steerable modular drilling assembly |
| 08/06/2002 | US6427777 Multilateral well drilling and reentry system and method |
| 08/01/2002 | WO2002059455A1 Method and system for enhanced access to a subterranean zone |
| 08/01/2002 | WO2002059448A1 Method and device for boring holes in the floor or in rock |
| 08/01/2002 | WO2002059447A1 Directional drilling apparatus |
| 08/01/2002 | US20020100618 Cutting structure for earth boring drill bits |
| 08/01/2002 | US20020100617 Cutting structure for earth boring drill bits |
| 08/01/2002 | US20020100616 Method and system for accessing subterranean zones from a limited surface area |
| 08/01/2002 | US20020100615 Formation cutting method and system |
| 08/01/2002 | US20020100614 Apparatus for use in drilling oil and gas production wells or water injection wells |
| 07/31/2002 | EP1227343A2 Trenchless underground boring system with boring tool location |
| 07/31/2002 | EP1227214A2 Cutting structure for drill bit |
| 07/31/2002 | EP1226336A1 Drilling formation tester, apparatus and methods of testing and monitoring status of tester |
| 07/30/2002 | US6426917 Reservoir monitoring through modified casing joint |
| 07/30/2002 | US6425448 Method and system for accessing subterranean zones from a limited surface area |
| 07/25/2002 | WO2002057590A2 Backreamer |
| 07/25/2002 | US20020096367 Drill bit for impact-assisted directional boring |
| 07/25/2002 | US20020096362 Backreamer |
| 07/25/2002 | US20020096336 Method and system for surface production of gas from a subterranean zone |
| 07/25/2002 | US20020096331 Apparatus and method for spacing out of offshore wells |
| 07/25/2002 | US20020096325 Wireless packer/anchor setting or activation |
| 07/25/2002 | DE10101731A1 Felsbohrkopf Rock drill |
| 07/24/2002 | EP1225299A1 High pressure fluid jet drilling tool |
| 07/24/2002 | CN2502002Y Directional drill bit and matting used guiding device thereof |
| 07/23/2002 | US6422782 Apparatus for mounting an electronic device for use in directional drilling |
| 07/23/2002 | US6422324 Method and device for driving bore-holes, in the sea bed using a counterflush method |
| 07/23/2002 | US6422318 Horizontal well system |
| 07/18/2002 | WO2002055837A1 Pressure pulsing apparatus at surface and method for drilling |
| 07/18/2002 | WO2002055836A1 Method of drilling and operating a subsea well |
| 07/18/2002 | WO2002055835A1 Rock drill head |
| 07/18/2002 | WO2002055792A1 Method and apparatus for vibratory kinetic energy generation and application thereof |
| 07/18/2002 | WO2002055331A2 Sectional drive system |
| 07/18/2002 | US20020092683 Boring unit for pile foundations |
| 07/18/2002 | US20020092655 Subsea wellbore drilling system for reducing bottom hole pressure |
| 07/18/2002 | CA2468642A1 Method and apparatus for vibratory kinetic energy generation and application thereof |
| 07/17/2002 | EP1223304A2 Apparatus and method for forming a window or an outline thereof in the casing of a cased wellbore |
| 07/17/2002 | EP1222357A1 One trip milling system |
| 07/17/2002 | EP1222356A1 Method and device for moving a tube in a borehole in the ground |
| 07/17/2002 | CN2500789Y Sidewall contact transmission device |
| 07/16/2002 | US6419033 Apparatus and method for simultaneous drilling and casing wellbores |
| 07/16/2002 | US6419024 Deviated borehole drilling assembly |
| 07/16/2002 | US6419023 Deviated borehole drilling assembly |
| 07/16/2002 | US6419021 Deviated borehole drilling assembly |
| 07/16/2002 | US6419020 Hydraulic drilling method and system for forming radial drain holes in underground oil and gas bearing formations |
| 07/16/2002 | US6419014 Apparatus and method for orienting a downhole tool |
| 07/16/2002 | US6419012 Deviated borehole drilling assembly |
| 07/16/2002 | US6419010 Deviated borehole drilling assembly |
| 07/11/2002 | WO2002053866A2 Device and method for changing lines |
| 07/11/2002 | US20020088649 Hole opener having interchangeable sleeve reamer |
| 07/11/2002 | US20020088648 Drilling assembly with a steering device for coiled -tubing operations |
| 07/11/2002 | US20020088619 Cementing tool and method |
| 07/11/2002 | DE10100471A1 Compressed air drilling machine used for producing bore holes in the ground has end-side nozzles arranged at the end of an inner and outer drill string and sleeve-side nozzles arranged on the channels of the outer drill string |
| 07/10/2002 | EP1220973A1 Device for the progress-controlled drilling of bores |
| 07/10/2002 | CN2499562Y Hole drill for soil cement press pile |
| 07/10/2002 | CN1357675A Offset guiding tool |
| 07/09/2002 | US6415878 Steerable rotary drilling device |
| 07/09/2002 | US6415877 Subsea wellbore drilling system for reducing bottom hole pressure |
| 07/09/2002 | CA2331021A1 Method and apparatus for generating acoustic pulses on the surface and conveying these pulses through the drill string to the drill bit to increase rate of drilling |
| 07/04/2002 | WO2002052121A2 Flightless rock auger for use with pressure drills with quick attachment and method of use |
| 07/04/2002 | US20020084110 Rock drilling and mounting frame |
| 07/04/2002 | US20020084109 Steerable fluid hammer |
| 07/03/2002 | EP1218618A2 Real-time control system and method for controlling an underground boring machine |
| 07/03/2002 | EP1218617A2 Guidable land-based rocket |
| 07/03/2002 | CN1357075A Rock drill and mounting frame |
| 07/02/2002 | US6412578 Boring apparatus |
| 07/02/2002 | US6412574 Method of forming a subsea borehole from a drilling vessel in a body of water of known depth |
| 06/27/2002 | WO2002050396A1 Igniter for oxygen lance for thermal cutting, drilling etc. |