| Patents for E21B 7 - Special methods or apparatus for drilling (22,064) |
|---|
| 01/09/2002 | EP1169547A1 Method of creating a wellbore in an underground formation |
| 01/09/2002 | EP1169540A1 Arrangement in rock drilling apparatus |
| 01/09/2002 | EP1169538A1 Rotary steerable system for use in drilling deviated wells |
| 01/09/2002 | CN2470530Y Well-completion sealing device for branch well |
| 01/09/2002 | CN1077666C Guided drilling system with shock absorber |
| 01/08/2002 | US6336507 Deformed multiple well template and process of use |
| 01/03/2002 | WO2002001043A1 Method and device for performing a portion of casing in a reservoir |
| 01/03/2002 | WO2002001041A1 Method of opening joints between drilling components, and rock drill |
| 01/03/2002 | US20020000332 Shallow depth, coiled tubing horizontal drilling system |
| 01/03/2002 | US20020000319 Apparatus and method to complete a multilateral junction |
| 01/03/2002 | DE10103859A1 Two or more sub-surface pipes drawn into passage held by clamps maintaining parallel relationship |
| 01/02/2002 | EP1167683A1 Introduction assembly for reinforcement rods for drilling machine |
| 01/02/2002 | EP1167682A1 Drilling machine to prepare excavations for tunnels |
| 01/02/2002 | EP1167681A1 Method and apparatus for laying a conduit in the ground |
| 01/02/2002 | EP1165930A1 Whipstock casing milling system |
| 01/02/2002 | EP1165929A1 Method and apparatus for directional boring |
| 01/02/2002 | EP0901561B1 A hydraulic device to be connected in a pipe string |
| 01/01/2002 | US6334485 Deviated borehole drilling assembly |
| 12/27/2001 | WO2001098626A1 System for creating a conduit in a borehole formed in an earth formation |
| 12/27/2001 | US20010054515 Downhole apparatus |
| 12/27/2001 | US20010054506 Method and apparatus for forming an optimized window |
| 12/27/2001 | CA2411241A1 System for creating a conduit in a borehole formed in an earth formation |
| 12/25/2001 | US6332498 Deviated borehole drilling assembly |
| 12/20/2001 | US20010052428 Steerable drilling tool |
| 12/20/2001 | US20010052427 Three dimensional steerable system |
| 12/20/2001 | US20010052426 Boring tool control using remote locator |
| 12/20/2001 | DE10002213A1 Optimierung exzenterschlagüberlagerter gegengewuchteter Werkzeuge Optimization exzenterschlagüberlagerter against-balanced Tools |
| 12/19/2001 | EP1163421A1 Method for installing a number of risers or tendons and vessel for carrying out said method |
| 12/19/2001 | EP1163419A1 Control method for use with a steerable drilling system |
| 12/19/2001 | CN2466335Y Flexible drilling tool |
| 12/13/2001 | WO2001094746A1 Wellbore liner system |
| 12/13/2001 | WO2001094739A1 Method for drilling and casing a wellbore with a pump down cement float |
| 12/13/2001 | WO2001094738A1 A method for drilling with casing |
| 12/13/2001 | DE10022621C1 Underground pipeline renewal method uses micro-tunneling technology for removal of old pipeline and simultaneous laying of new pipeline |
| 12/13/2001 | CA2661956A1 A method for drilling with casing |
| 12/13/2001 | CA2411856A1 A method for drilling with casing |
| 12/12/2001 | EP1161612A1 Drill for making wide diameter and high depth holes and method for carrying out said holes |
| 12/12/2001 | CN2464933Y Repropelling guide for sub-well pipe |
| 12/12/2001 | CN2464925Y Downhole high-pressure jetting drill using turbine as power |
| 12/12/2001 | CN2464922Y Drilling machine for underground pipeline |
| 12/12/2001 | CN2464921Y Vehicle carried clutch axle gearing electric drill |
| 12/11/2001 | US6328119 Adjustable gauge downhole drilling assembly |
| 12/11/2001 | US6328107 Method for installing a well casing into a subsea well being drilled with a dual density drilling system |
| 12/11/2001 | US6327919 Method for taking a soil sample from a horizontal borehole |
| 12/09/2001 | CA2311158A1 A method for drilling with casing |
| 12/06/2001 | WO2001092680A1 Use of helically wound tubular structure in the downhole environment |
| 12/06/2001 | WO2001092679A1 Device for raise boring |
| 12/06/2001 | WO2001044614A3 Remote lock-out system and method for a horizontal direction drilling system |
| 12/06/2001 | WO2001021927B1 Real-time control system and method for controlling an underground boring machine |
| 12/06/2001 | US20010047889 Earth boring bit |
| 12/06/2001 | US20010047887 Drill head for directional boring |
| 12/06/2001 | US20010047884 Directional drilling apparatus and method utilising eccentric stabiliser |
| 12/06/2001 | US20010047883 Downhole drilling apparatus |
| 12/06/2001 | US20010047872 In-tubing wellbore sidetracking operations |
| 12/06/2001 | US20010047871 Use of helically wound tubular structure in the downhole environment |
| 12/06/2001 | US20010047869 Method and apparatus for drilling an offshore underwater well |
| 12/06/2001 | CA2408514A1 Use of helically wound tubular structure in the downhole environment |
| 12/05/2001 | EP1159510A2 Wellbore primary barrier and related systems |
| 12/05/2001 | EP1159506A1 Steerable modular drilling assembly |
| 12/05/2001 | CN2463531Y Full-automatic hole drill for erecting rod |
| 12/04/2001 | US6325164 Device and method for creating bore-hole branches |
| 12/04/2001 | US6325162 Bit connector |
| 12/04/2001 | US6325160 Undersea drilling template release mechanism and method |
| 12/04/2001 | CA2043695C Drilling tool for sinking wells in underground rock formations |
| 12/04/2001 | CA2009733C Device in impact machines |
| 11/29/2001 | WO2001090527A1 Hydraulic in-the-hole percussion rock drill |
| 11/29/2001 | US20010045302 Flexible hose with thrusters for horizontal well drilling |
| 11/29/2001 | US20010045300 Thruster responsive to drilling parameters |
| 11/29/2001 | US20010045284 Apparatus and methods for expanding tubulars in a wellbore |
| 11/29/2001 | US20010045282 Combined notching and jetting methods and related apparatus |
| 11/28/2001 | EP1158137A2 Method and apparatus for establishing branch wells at a node of a parent well |
| 11/28/2001 | EP1157187A1 Moulten bath drilling method |
| 11/28/2001 | EP1157169A1 Short aggregate pier techniques |
| 11/28/2001 | EP0812377B1 Hydraulic tubing machine as an attachment for a mobile rotary boring installation |
| 11/27/2001 | US6321858 Bit for directional drilling |
| 11/27/2001 | US6321857 Directional drilling apparatus and method utilizing eccentric stabilizer |
| 11/22/2001 | WO2001088336A1 Well reference apparatus and method |
| 11/22/2001 | WO2001088320A1 Method and apparatus for hydrocarbon subterranean recovery |
| 11/22/2001 | US20010042643 Steerable modular drilling assembly |
| 11/22/2001 | US20010042621 Method and apparatus for multilateral well entry |
| 11/22/2001 | CA2415278A1 Method and apparatus for hydrocarbon subterranean recovery |
| 11/20/2001 | USRE37450 Directional multi-blade boring head |
| 11/20/2001 | US6318481 Drill string deflector sub |
| 11/20/2001 | US6318480 Drilling of laterals from a wellbore |
| 11/20/2001 | US6318471 Method for installing tubular members axially into the earth |
| 11/20/2001 | US6318466 Method and apparatus for accurate milling of windows in well casings |
| 11/20/2001 | CA2219642C Method and apparatus for removal of utility line and replacement with polyolefin pipe |
| 11/15/2001 | WO2001086111A1 Apparatus and methods for forming a lateral wellbore |
| 11/15/2001 | WO2001086109A1 Drill bit mounting for a downhole drilling machine |
| 11/15/2001 | US20010041099 Apparatus for and a method of boring the ground |
| 11/15/2001 | US20010040054 Apparatus and methods for forming a lateral wellbore |
| 11/15/2001 | DE10115233A1 Horizontal drilling system has mixing unit mounted on running gear with inlet for connection to liquid source, output connector(s) for reversible connection to flushing liquid sink |
| 11/15/2001 | DE10023200A1 Ice cover piercing tool has hollow screw with which ice cover is pierced |
| 11/14/2001 | EP1154078A2 Apparatus for and a method of boring the ground |
| 11/14/2001 | EP1153195A1 Downhole apparatus and method for milling a window and at least one key-way in a well casing |
| 11/14/2001 | EP1153194A1 Automated bore planning method and apparatus for horizontal directional drilling |
| 11/14/2001 | EP1153193A2 Directional drilling apparatus |
| 11/14/2001 | EP0870151B1 Apparatus for removal of utility line and replacement with polyolefin pipe |
| 11/13/2001 | US6315062 Horizontal directional drilling machine employing inertial navigation control system and method |
| 11/13/2001 | US6315059 Portable water well drill |