| Patents for E21B 7 - Special methods or apparatus for drilling (22,064) |
|---|
| 10/15/2002 | US6464020 Apparatus and method to drill and lift core-drilled specimens from an aggregate medium |
| 10/15/2002 | US6464002 Whipstock assembly |
| 10/10/2002 | WO2002079601A1 Device and method for determining drill parameters |
| 10/10/2002 | US20020145281 An apparatus and method for isolating a section of tubing |
| 10/10/2002 | DE10116103A1 Equipment for creating underground bore has extendable bore rod and bore crown at one end and drive at other end for rotating and advancing bore rod |
| 10/09/2002 | EP1247787A1 Rotary seal for directional drilling tools |
| 10/09/2002 | EP1246994A1 Assembly and method for locating lateral wellbores |
| 10/09/2002 | EP1246993A1 Three dimensional steerable system |
| 10/09/2002 | EP1127477A4 Method and device in down-the-hole drilling |
| 10/09/2002 | CN2515419Y Guiding and binding type small size screw composite driller |
| 10/09/2002 | CN1373828A Boom arrangement for rock drilling apparatus |
| 10/09/2002 | CN1092279C System, vessel, seabed installation and method for producing oil or gas |
| 10/08/2002 | USRE37867 Downhole equipment, tools and assembly procedures for the drilling, tie-in and completion of vertical cased oil wells connected to liner-equipped multiple drainholes |
| 10/08/2002 | US6462964 High frequency power generator and related methods |
| 10/08/2002 | US6460652 Boom arrangement for rock drilling apparatus |
| 10/08/2002 | US6460633 Side tracking bit |
| 10/08/2002 | US6460630 Method and rock drilling apparatus for controlling rock drilling |
| 10/03/2002 | WO2002077406A1 Percussion drill head |
| 10/03/2002 | WO2002057590A3 Backreamer |
| 10/03/2002 | US20020139586 Drill device for a drilling apparatus |
| 10/03/2002 | US20020139585 Reverse circulation drilling system with bit locked underreamer arms |
| 10/03/2002 | US20020139584 Rotary seal for directional drilling tools |
| 10/03/2002 | US20020139582 Starter rod for use in back reaming |
| 10/02/2002 | EP1245783A2 Apparatus and method for directional drilling using coiled tubing |
| 10/02/2002 | EP1244866A1 Improved method for the drilling of oil wells |
| 10/02/2002 | EP1244865A1 Long gauge roller vane drilling motor |
| 10/02/2002 | EP0777815B1 Arrangement in boom for rock drilling unit |
| 10/02/2002 | EP0711390B1 Underground pipe replacement technique |
| 10/02/2002 | DE10123999A1 Vorrichtung und Verfahren zum Ermitteln von Bohrparametern Apparatus and method for determining drilling parameters |
| 10/02/2002 | DE10114429A1 Device for producing holes in bulk material, especially inhomogeneous refuse dumps, comprises a driven body having a cutting tool at its tip |
| 10/02/2002 | DE10112985A1 Schlagbohrkopf Impact drill head |
| 10/02/2002 | CN1372065A Modulation type offset leading tool |
| 10/01/2002 | US6457540 Method and system for hydraulic friction controlled drilling and completing geopressured wells utilizing concentric drill strings |
| 10/01/2002 | US6457536 Method and system for exploiting natural resources under the seabed |
| 10/01/2002 | US6457532 Procedures and equipment for profiling and jointing of pipes |
| 10/01/2002 | US6457525 Method and apparatus for completing multiple production zones from a single wellbore |
| 09/26/2002 | WO2002036924A3 Rotary steerable drilling tool and method for directional drilling |
| 09/26/2002 | US20020134586 Boring apparatus |
| 09/26/2002 | US20020134546 Method and system for accessing subterranean deposits from the surface |
| 09/26/2002 | DE10113561A1 Pile-driving or drilling device comprises a supporting device, a carriage with a work tool, and a sliding device having a gypsy winch operating a cable connected to the carriage |
| 09/25/2002 | EP1242711A1 Drilling bit for drilling while running casing |
| 09/25/2002 | EP1242710A2 Remote lock-out system and method for a horizontal direction drilling system |
| 09/25/2002 | CN1371544A High frequency switch-mode dc powered computer system |
| 09/24/2002 | US6454025 Apparatus for directional boring under mixed conditions |
| 09/24/2002 | US6454007 Method and apparatus for casing exit system using coiled tubing |
| 09/24/2002 | US6454006 Methods and associated apparatus for drilling and completing a wellbore junction |
| 09/19/2002 | WO2002073001A1 Steel pipe for use as embedded expanded pipe, and method of embedding oil-well steel pipe |
| 09/19/2002 | WO2002040819A3 Method for producing a bore and advancing machine for boring |
| 09/19/2002 | WO2002023008A3 Methods and apparatus for forming a lateral wellbore |
| 09/19/2002 | WO2001009478A9 Long reach rotary drilling assembly |
| 09/19/2002 | US20020129975 Ice auger system |
| 09/18/2002 | EP1240404A2 Subsea well intervention vessel |
| 09/17/2002 | US6450269 Method and bit for directional horizontal boring |
| 09/12/2002 | WO2002070857A1 Improved mud motor |
| 09/12/2002 | WO2002070856A1 Rock drilling rig provided with a sound dampening casing |
| 09/12/2002 | DE10125861C1 System, for moving earth boring tool or pipe section through subterranean bore, comprises linear drive connected by cable to pipe, opposite end being connected by second cable to hose which can be inflated, so that pipe is pulled back |
| 09/11/2002 | EP1239112A2 Method and apparatus to vibrate a downhole component |
| 09/11/2002 | CN2510614Y Truck-mounted multi-purpose engineering drill rig |
| 09/10/2002 | US6446737 Apparatus and method for rotating a portion of a drill string |
| 09/10/2002 | US6446365 Nozzle mount for soft excavation |
| 09/10/2002 | US6446323 Profile formation |
| 09/06/2002 | WO2002068797A2 Oscillating shear valve for mud pulse telemetry |
| 09/06/2002 | WO2002068790A1 Shoe with earth formation disiplacing structure |
| 09/06/2002 | WO2002068789A2 Sonic drill head |
| 09/05/2002 | US20020122722 Mud motor |
| 09/05/2002 | US20020121393 Mill/drill bit |
| 09/05/2002 | US20020121378 Method and apparatus to vibrate a downhole component |
| 09/05/2002 | US20020121375 Apparatus and method for completing a junction of plural wellbores |
| 09/04/2002 | EP1236861A1 Mill/drill bit |
| 09/04/2002 | EP1236005A1 Cable tensioning device for bursting/flaring devices |
| 09/04/2002 | EP1064450B1 Riser tensioning construction |
| 09/04/2002 | CN1367295A Variable bearing disk club-footed pile, forming method and forming equipment |
| 09/04/2002 | CN1367294A Earth-squeezing hole-enlarging hole-forming device and its treatment method |
| 09/03/2002 | US6443658 Ram burster |
| 09/03/2002 | US6443657 Method of installing or replacing underground pipe |
| 09/03/2002 | US6443247 Casing drilling shoe |
| 09/03/2002 | CA2276222C High pressure internal sleeve for use with easily drillable exit ports |
| 09/02/2002 | CA2374086A1 Mill/drill bit |
| 08/29/2002 | WO2002066780A1 Drilling device with breaker insert |
| 08/29/2002 | US20020117336 Drilling apparatus |
| 08/29/2002 | US20020117334 Sonic drill head |
| 08/29/2002 | US20020117333 Balance structure for rotating member |
| 08/29/2002 | US20020117306 Oscillating shear valve for mud pulse telemetry |
| 08/29/2002 | US20020117297 Method and system for accessing subterranean zones from a limited surface area |
| 08/28/2002 | EP1015728A4 Bottomhole assembly orienting sub |
| 08/28/2002 | CN2507993Y Borehole hydraulic change valve |
| 08/28/2002 | CN2507988Y Borehole booster for petroleum drilling |
| 08/28/2002 | CN2507987Y Middle and small drilling machine |
| 08/27/2002 | US6439629 Post hole digger |
| 08/27/2002 | US6439325 Drilling apparatus with motor-driven pump steering control |
| 08/27/2002 | US6439322 Downhole hammer-type core barrel and method of using same |
| 08/27/2002 | US6439321 Piston actuator assembly for an orienting device |
| 08/27/2002 | US6439320 Wellbore pattern for uniform access to subterranean deposits |
| 08/27/2002 | US6439319 Method and apparatus for directional boring under mixed conditions |
| 08/27/2002 | US6439318 Downhole apparatus |
| 08/27/2002 | CA2214749C Improved casing shoe |
| 08/22/2002 | US20020116129 Automated bore planning method and apparatus for horizontal directional drilling |
| 08/22/2002 | US20020113718 Burst QAM downhole telemetry system |
| 08/22/2002 | US20020112894 Bit for horizontal boring |
| 08/22/2002 | US20020112893 Apparatus and method for controlling an underground boring machine |