| Patents for E21B 7 - Special methods or apparatus for drilling (22,064) |
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| 02/05/2004 | US20040020648 Well reference apparatus and method |
| 02/05/2004 | DE10144973B4 Flügelräumer, Verfahren zum Bohren mit einem Flügelräumer und seine Verwendung Winged reamer, method of drilling with a winged reamer and its use |
| 02/04/2004 | EP1386706A1 Installation for cleaning rinsing liquids |
| 02/04/2004 | EP1386387A1 Downhole torque generator |
| 02/04/2004 | EP1386386A1 Downhole torque-generating and generator combination apparatus |
| 02/03/2004 | US6684965 Method and apparatus for operations in underground subsea oil and gas wells |
| 02/03/2004 | US6684953 Wireless packer/anchor setting or activation |
| 02/03/2004 | CA2161312C Articulated directional drilling motor assembly |
| 01/29/2004 | WO2004009958A1 Apparatus and method for collecting underground hydrocarbon gas resources |
| 01/29/2004 | WO2004009948A1 Welded joints for rotary-vibratory drills having reduced stress |
| 01/29/2004 | WO2004009298A1 Sonic drill |
| 01/29/2004 | US20040016571 Closed loop drilling assembly with electronics outside a non-rotating sleeve |
| 01/29/2004 | US20040016547 Apparatus and method to complete a multilateral junction |
| 01/29/2004 | DE19842181B4 Vorrichtung zur Bildung eines Durchlasses für Rohre im Erdreich An apparatus for forming a passage for pipes in the ground |
| 01/29/2004 | DE10325576A1 Vorderteil zum Erdbohren und Erdbohrmaschine Front to Erdbohren and earth boring machine |
| 01/29/2004 | CA2493039A1 Sonic drill |
| 01/28/2004 | CN1471489A Device for transforting particles of magnetic material |
| 01/27/2004 | US6682264 Method of accurate trenchless installation of underground pipe |
| 01/27/2004 | US6681470 Method of mounting an auger to a motor vehicle |
| 01/22/2004 | WO2004007907A1 Undulating well bore |
| 01/22/2004 | WO2004007899A1 Wellbore sealing system and method |
| 01/22/2004 | WO2004007898A1 Wellbore plug system and method |
| 01/22/2004 | US20040011559 Stabilizer for use in a drill string |
| 01/22/2004 | US20040011558 Drilling device |
| 01/22/2004 | US20040011534 Apparatus and method for completing an interval of a wellbore while drilling |
| 01/22/2004 | US20040011522 Device for perfoming hydrodynamic action on wellbore walls |
| 01/22/2004 | DE19538215B4 Einrichtung zum Erneuern von Rohrleitungen Means for renewing pipelines |
| 01/22/2004 | DE10325560A1 Erdbohrmaschine Earth drilling machine |
| 01/22/2004 | DE10235700B3 Richtbohrgerät Directional drilling |
| 01/22/2004 | DE10230450A1 Bohrkopf für das Horizontalbohren sowie Herstellungsverfahren für einen Bohrkopf Drill head for horizontal drilling and production method for a drill head |
| 01/22/2004 | CA2493379A1 Wellbore sealing system and method |
| 01/22/2004 | CA2493378A1 Wellbore plug system and method |
| 01/21/2004 | EP1381750A1 Drilling system with expandable sleeve |
| 01/21/2004 | CN2600574Y Compound flexible connector for bottom hole power drilling tool |
| 01/21/2004 | CN1469964A A drilling tool used in horizontal drilling applications |
| 01/20/2004 | US6679335 Method for preparing casing for use in a wellbore |
| 01/20/2004 | US6679334 Use of helically wound tubular structure in the downhole environment |
| 01/20/2004 | US6679322 Method and system for accessing subterranean deposits from the surface |
| 01/15/2004 | WO2004005664A1 Rock drill supports |
| 01/15/2004 | WO2004005660A2 Active hold down system for jack-up drilling unit |
| 01/15/2004 | WO2003002840A3 Improved stabilizer for use in a drill string |
| 01/15/2004 | US20040007391 Boring apparatus |
| 01/15/2004 | US20040007390 Wellbore plug system and method |
| 01/15/2004 | US20040007389 Wellbore sealing system and method |
| 01/15/2004 | US20040007387 Smart-ultrasonic/sonic driller/corer |
| 01/15/2004 | US20040007351 Undulating well bore |
| 01/15/2004 | DE10302443A1 Vorrichtung zum Bewegen eines Rohres An apparatus for moving a pipe |
| 01/14/2004 | EP1379757A2 Oscillating shear valve for mud pulse telemetry |
| 01/14/2004 | CN2599204Y Multifunctional rotary boring machine jib lubbing mechanism |
| 01/13/2004 | US6675919 Tubular piling apparatus and method |
| 01/13/2004 | US6675916 Boring machine and auger bit |
| 01/13/2004 | US6675901 Use of helically wound tubular structure in the downhole environment |
| 01/13/2004 | CA2210573C Apparatus for completing a subterranean well and associated methods of using same |
| 01/08/2004 | WO2004003695A2 Tool apparatus, system and method of use |
| 01/08/2004 | WO2003093625A3 Underwater drilling rig |
| 01/08/2004 | US20040003944 Drilling and cementing casing system |
| 01/08/2004 | CA2494562A1 Tool apparatus, system and method of use |
| 01/07/2004 | EP0916014B1 Apparatus and method for milling a hole in casing |
| 01/07/2004 | CN2597656Y High pressure drilling fluid filter |
| 01/07/2004 | CN2597651Y Remote-controlled reducing stabilizer |
| 01/07/2004 | CN2597650Y Adjustable rotary guide disk valve controlling mechanism |
| 01/06/2004 | US6672409 Downhole generator for horizontal directional drilling |
| 01/06/2004 | US6672407 Method of drilling, analyzing and stabilizing a terrestrial or other planetary subsurface formation |
| 01/06/2004 | CA2299398C Assembly and process for drilling and completing multiple wells |
| 01/02/2004 | EP1375820A1 Steel pipe for use as embedded expanded pipe, and method of embedding oil-well steel pipe |
| 01/02/2004 | EP1373675A1 Method for drilling and drilling apparatus |
| 01/02/2004 | EP1105618B1 Device for drilling or draining holes in soil or rock |
| 12/31/2003 | WO2004001180A1 Telescopic guide pipe for offshore drilling |
| 12/31/2003 | WO2002002900A8 Apparatus and method to complete a multilateral junction |
| 12/31/2003 | CN1464170A Oil exploitation super short radius horizontal drilling completion tool and process thereof |
| 12/30/2003 | US6668949 Underreamer and method of use |
| 12/30/2003 | US6668948 Nozzle for jet drilling and associated method |
| 12/30/2003 | US6668946 Backreamer |
| 12/30/2003 | US6668918 Method and system for accessing subterranean deposit from the surface |
| 12/30/2003 | CA2151706C Method and apparatus for setting a whipstock |
| 12/25/2003 | US20030235691 Polycrystalline diamond partially depleted of catalyzing material |
| 12/24/2003 | WO2003106806A1 A device and a method for drilling and completing a horizontal wellbore |
| 12/24/2003 | WO2003106130A2 Collapsible expansion cone |
| 12/24/2003 | WO2003080988A3 Drill head and method for controlled horizontal drilling |
| 12/24/2003 | DE20314887U1 Drill head for direction-controlled horizontal drilling comprises a control surface and a tool which deviates from the drill head axis in the steering direction to produce a free punch as a roller |
| 12/24/2003 | CN1131925C Drilling appts. and method of drilling through materials |
| 12/24/2003 | CA2489283A1 Collapsible expansion cone |
| 12/23/2003 | CA2240559C Embankment hammer |
| 12/23/2003 | CA2203736C Guided drilling system with shock absorber |
| 12/18/2003 | WO2003104700A1 Device for moving a pipe, pipe laying system, method for inserting a pipe section into a channel, pipe laying method |
| 12/18/2003 | WO2003104603A2 New and improved method and apparatus involving an integrated or otherwise combined exit guide and section mill for sidetracking or directional drilling from existing wellbores |
| 12/18/2003 | US20030230893 Spoolable composite coiled tubing connector |
| 12/18/2003 | US20030230432 Apparatus and process for drilling casing with environmentally contained mud annulus |
| 12/18/2003 | DE20314277U1 Drill for rock has base frame and tracked undercarriage with drill head supported on projecting subframe |
| 12/18/2003 | CA2493990A1 New and improved method and apparatus involving an integrated or otherwise combined exit guide and section mill for sidetracking or directional drilling from existing wellbores |
| 12/17/2003 | EP1371810A1 Anti-rotation device for use in a borehole |
| 12/17/2003 | EP0845071B1 Through-tubing lateral re-entry |
| 12/17/2003 | CN2592840Y Hydraulic control apparatus for automatic vertical drilling tool |
| 12/16/2003 | US6662870 Method and system for accessing subterranean deposits from a limited surface area |
| 12/16/2003 | CA2298375C Rotary steerable well drilling system utilizing hydraulic servo-loop |
| 12/16/2003 | CA2217356C Method and apparatus for drilling and re-entering multiple lateral branches in a well |
| 12/12/2003 | CA2390466A1 Method and apparatus for jet drilling drainholes from wells |
| 12/11/2003 | WO2003102353A1 Drilling apparatus |
| 12/11/2003 | WO2003102352A1 Drill rig combination for rock drilling |
| 12/11/2003 | WO2003101880A2 Method and apparatus for moving a mass |