| Patents for E21B 7 - Special methods or apparatus for drilling (22,064) |
|---|
| 11/13/2001 | US6315054 Assembly and method for locating lateral wellbores drilled from a main wellbore casing and for guiding and positioning re-entry and completion device in relation to these lateral wellbores |
| 11/13/2001 | US6315044 Pre-milled window for drill casing |
| 11/13/2001 | CA2033062C Moling system |
| 11/08/2001 | WO2001083933A1 Smart-ultrasonic/sonic driller/corer |
| 11/08/2001 | WO2001083932A1 Expandable apparatus for drift and reaming a borehole |
| 11/08/2001 | US20010038774 Method, system and device for building a wall in the ground |
| 11/08/2001 | US20010037899 Apparatus and method for controlling an underground boring machine |
| 11/07/2001 | EP1151180A1 Tubing anchor |
| 11/06/2001 | US6311791 Hydraulic underreamer and sections for use therein |
| 11/06/2001 | US6311790 Removable boring head with tapered shank connector |
| 11/06/2001 | US6311776 Dual diverter and orientation device for multilateral completions and method |
| 11/01/2001 | WO2001081714A1 Method and apparatus for forming lateral drains in wellbores |
| 11/01/2001 | WO2001081707A1 Apparatus and method of oscillating a drill string |
| 11/01/2001 | WO2001081706A1 Rock drilling rig |
| 11/01/2001 | WO2001081705A1 Rock drilling rig |
| 11/01/2001 | WO2001081704A1 Backreaming tool |
| 11/01/2001 | US20010037248 Product warranty registration system and method |
| 11/01/2001 | US20010035674 Jet excavating device |
| 11/01/2001 | CA2407042A1 Backreaming tool |
| 11/01/2001 | CA2406477A1 Rock drilling rig |
| 10/31/2001 | EP1149227A1 Method and rock drilling apparatus for controlling rock drilling |
| 10/31/2001 | DE10019663A1 Method for warning when force on plastic pipe is about to exceed permissible limit in burst lining process comprises measuring force at position of head and feeding it by high frequency wireless connection to warning device or processor |
| 10/31/2001 | CN2457324Y Anti-bias grinding rotator for deflection well oil tube |
| 10/30/2001 | US6308790 Drag bits with predictable inclination tendencies and behavior |
| 10/30/2001 | US6308789 Drill bit for directional drilling |
| 10/30/2001 | US6308787 Real-time control system and method for controlling an underground boring machine |
| 10/30/2001 | US6308782 Method and apparatus for one-trip insertion and retrieval of a tool and auxiliary device |
| 10/30/2001 | CA2059910C Adjustable drilling mechanism |
| 10/25/2001 | WO2001079649A2 Apparatus and method for directional drilling |
| 10/25/2001 | WO2001025585A3 Guidable land-based rocket |
| 10/25/2001 | WO2001021927A3 Real-time control system and method for controlling an underground boring machine |
| 10/25/2001 | DE10020139A1 Drilling bit has shaft with drill crown, magnetic core movable in shaft, capacitor discharged via discharge contacts and electrodes in water to produce electrohydraulic pulse for breaking rock |
| 10/24/2001 | EP1148206A2 Multi-activity offshore exploration and/or development drilling method and apparatus |
| 10/24/2001 | EP1147287A2 Procedures and equipment for profiling and jointing of pipes |
| 10/24/2001 | EP1147282A1 Improved steerable drilling system and method |
| 10/24/2001 | CN2455915Y Drilling rigs with wheels for drawing wholly |
| 10/23/2001 | US6307757 High frequency switch-mode DC powered computer system |
| 10/23/2001 | US6305880 Device and method for trenchless replacement of underground pipe |
| 10/23/2001 | US6305480 Post driving and earth boring machine |
| 10/23/2001 | US6305474 Scoop for use with an anchor system for supporting a whipstock |
| 10/23/2001 | US6305469 Method of creating a wellbore |
| 10/23/2001 | CA2177189C Miniature, portable, self-contained power machine |
| 10/18/2001 | WO2001077490A1 Underground mining sampler |
| 10/18/2001 | WO2001077482A1 Flexible hose with thrusters for horizontal well drilling |
| 10/18/2001 | WO2001077481A1 Whipstock asssembly |
| 10/18/2001 | WO2001077480A2 Apparatus to actuate downhole tool |
| 10/18/2001 | US20010030045 Assembly and floatation method for drilling drivepipe |
| 10/18/2001 | DE10030782C1 Rohrvorpresseinrichtung Pipe rough-pressing |
| 10/17/2001 | EP1144802A2 Profile formation |
| 10/17/2001 | EP1144795A1 Downhole mud motor transmission |
| 10/17/2001 | CN1317622A Spiral counterborer for raising up drill bit |
| 10/16/2001 | US6302215 Positioning and conveying well apparatus and method |
| 10/16/2001 | US6302198 One trip milling system |
| 10/11/2001 | US20010028827 Method and apparatus for forming piles in place |
| 10/11/2001 | US20010027878 Assembly and floatation method for drilling drivepipe and jarring system |
| 10/11/2001 | US20010027866 Deviated borehole drilling assembly |
| 10/10/2001 | EP1143105A1 Directional drilling system |
| 10/10/2001 | EP1141517A1 Drilling method |
| 10/10/2001 | EP1141515A1 Method and apparatus for expanding a liner patch |
| 10/10/2001 | EP1141511A1 Method for correcting positioning errors in rock drilling, and a rock drilling equipment |
| 10/10/2001 | EP0879341A4 Down hole pressure intensifier and drilling assembly and method |
| 10/10/2001 | CN2453105Y Under-reaming tool for small hole |
| 10/10/2001 | CA2305960A1 Underground mining sampler |
| 10/09/2001 | US6298928 Drill rig and construction and configuration thereof |
| 10/09/2001 | US6298925 Method and apparatus for installing a small-scale groundwater sampling well |
| 10/09/2001 | CA2218278C Apparatus and method for lateral wellbore completion |
| 10/09/2001 | CA2203402C Single-wire guidance system for drilling boreholes |
| 10/04/2001 | US20010027401 Product warranty registration system and method |
| 10/04/2001 | US20010025710 Method and apparatus for connecting a main well bore and a lateral branch |
| 10/04/2001 | EP1138869A2 Optimization of excentre-driven percussion tools with counterweight |
| 10/04/2001 | CA2342594A1 Variable gauge stabilizer for directional drilling |
| 10/03/2001 | CN1072302C Digging method and system for controlled fragmentation and removing of material |
| 10/02/2001 | US6297638 Method for controlling cable boring |
| 10/02/2001 | US6296066 Well system |
| 10/02/2001 | CA2024061C System for drilling deviated boreholes |
| 09/30/2001 | CA2313924A1 Optimization of eccentric impact superimposed counter-balanced roller b its |
| 09/27/2001 | US20010024597 In or relating to pipe installation |
| 09/27/2001 | DE10023467C1 Boring device, to form bores using borer tubes, has holder unit with rotation plate for borer tube having radial locking opening and has locking unit on plate with locking bolt to lock borer tube |
| 09/27/2001 | DE10008450C1 Test drilling to assess the risk of a rock fall at a coal mine uses high pressure water jets to drill into the mine seam with measurements of at least one drilling parameter to be correlated with the level of danger |
| 09/26/2001 | EP1136648A2 Seismic shot-hole drill system |
| 09/26/2001 | EP0832344A4 Down hole hammer assembly |
| 09/26/2001 | EP0728050B1 Method and system of trajectory prediction and control using pdc bits |
| 09/26/2001 | CN1314968A Directional drilling system and apparatus |
| 09/25/2001 | US6293628 Hydraulic scroll auger mining system and method of using the same |
| 09/25/2001 | US6293359 Pressure control of a drilling apparatus |
| 09/25/2001 | US6293357 Hydraulic in-the-hole percussion rock drill |
| 09/25/2001 | US6293355 Method of controlling rock drilling |
| 09/24/2001 | CA2341830A1 Seismic shot-hole drill system |
| 09/20/2001 | WO2001069042A1 Method and system for mining hydrocarbon-containing materials |
| 09/20/2001 | WO2001069041A1 Arrangement for determining position of unmanned mining vehicles |
| 09/20/2001 | WO2001069035A1 Directional drilling machine and method of directional drilling |
| 09/20/2001 | US20010022241 Bottomhole assembly and methods of use |
| 09/20/2001 | US20010022240 Downhole hammer-type core barrel and method of using same |
| 09/20/2001 | US20010022238 Directional drilling machine and method of directional drilling |
| 09/19/2001 | EP1133618A1 Lateral branch junction for well casing |
| 09/19/2001 | CN2448905Y Downhole hydraulic reamer |
| 09/19/2001 | CN1313927A Grouting pipe equipment and method of grouting using the same for an underground water well |
| 09/19/2001 | CN1313926A Device for drilling or draining holes in soil or rock |
| 09/19/2001 | CN1313449A Method for establishing branches at nodes of mother holes |
| 09/18/2001 | US6290003 Controllable stabilizer |