| Patents for E21B 7 - Special methods or apparatus for drilling (22,064) |
|---|
| 01/28/2003 | US6510905 Earth boring apparatus |
| 01/28/2003 | US6510898 Positioning assembly |
| 01/23/2003 | WO2003006786A1 Method for producing earth boreholes |
| 01/23/2003 | WO2003006781A1 Monobore retrievable whipstock |
| 01/23/2003 | WO2003006778A1 Drilling system and method for controlling equivalent circulating density during drilling of wellbores |
| 01/23/2003 | US20030014873 Method to detect deviations from a wellplan while drilling in the presence of magnetic interference |
| 01/22/2003 | EP1277913A2 Multi-activity offshore exploration and/or development drilling method and apparatus |
| 01/22/2003 | EP1277887A2 Displacement drilling tool and equipment using said tool |
| 01/22/2003 | EP1276953A1 Expandable apparatus for drift and reaming a borehole |
| 01/22/2003 | EP1276952A1 Backreaming tool |
| 01/22/2003 | EP0836668B1 Multi-activity offshore exploration and/or development drilling method |
| 01/21/2003 | US6508317 Downhole apparatus and method of use |
| 01/18/2003 | CA2353249A1 Pipe centralizer and method of attachment |
| 01/16/2003 | WO2003004824A1 Earth drilling device |
| 01/16/2003 | WO2003004823A1 Cable pull device for pulling in pipes |
| 01/16/2003 | WO2002079601A8 Device and method for determining drill parameters |
| 01/16/2003 | US20030010534 Steerable drilling system and method |
| 01/16/2003 | US20030010533 Mono-bore retrievable whipstock |
| 01/16/2003 | US20030010497 Milling apparatus and method for a well |
| 01/16/2003 | CA2353160A1 Robotic proboscis pipeline apparatus |
| 01/15/2003 | EP1275814A1 Fixation of supply conduits with subsurface drive |
| 01/15/2003 | EP1274918A1 Rock drilling rig |
| 01/15/2003 | EP1274917A1 Rock drilling rig |
| 01/15/2003 | EP0824634B1 A hydraulic arrangement for turning the actuator of a rock drilling machine |
| 01/15/2003 | CN1391632A Real-time control system and method for controlling underground boring machine |
| 01/15/2003 | CN1098963C Method for extending drill system and starting/finishing drilling process therewith |
| 01/14/2003 | CA2241799C Wheel-mounted drill rig with articulated frame |
| 01/09/2003 | WO2003002844A1 Drillable junction joint |
| 01/09/2003 | WO2003002841A1 Drilling direction control device |
| 01/09/2003 | WO2003002840A2 Improved stabilizer for use in a drill string |
| 01/09/2003 | US20030007372 High frequency power system and related methods |
| 01/09/2003 | US20030006071 Apparatus and method for horizontal drilling |
| 01/08/2003 | EP1272729A1 Whipstock asssembly |
| 01/08/2003 | EP1272728A2 Apparatus and method for directional drilling |
| 01/08/2003 | EP1272727A2 Apparatus to actuate downhole tool |
| 01/07/2003 | US6502649 Ice auger cutting head |
| 01/07/2003 | US6502641 Coiled tubing drilling rig |
| 01/07/2003 | CA2215266C Apparatus and process for drilling and completing multiple wells |
| 01/03/2003 | WO2003001022A1 Rock drilling tool, a ring drill bit and an adapter for percussive drilling |
| 01/03/2003 | WO2003001021A1 Method for rock boring |
| 01/02/2003 | US20030000744 Hand-held device for exposing buried objects |
| 01/02/2003 | US20030000743 Direction control in well drilling |
| 01/02/2003 | US20030000741 Dry geothermal drilling and recovery system |
| 01/02/2003 | US20030000740 Subsea well intervention vessel |
| 01/02/2003 | EP1270869A1 Drilling and pressing tool |
| 01/02/2003 | EP1246994A4 Assembly and method for locating lateral wellbores |
| 01/02/2003 | EP0980461A4 Directional drilling apparatus |
| 12/31/2002 | US6499538 Method and apparatus for forming an optimized window |
| 12/31/2002 | US6499537 Well reference apparatus and method |
| 12/31/2002 | US6499511 Pipe end fittings |
| 12/31/2002 | US6499418 Method for installing a number of risers or tendons and vessel for carrying out said method |
| 12/27/2002 | WO2002103156A1 Method for preparing wellbore casing for installation |
| 12/27/2002 | WO2002103155A1 Casing wear band and method of attachment |
| 12/27/2002 | WO2002103154A1 Pipe centralizer and method of attachment |
| 12/27/2002 | WO2002103152A1 Hydrothermal drilling method and system |
| 12/27/2002 | WO2002035056B1 Downhole generator for horizontal directional drilling |
| 12/27/2002 | CA2450651A1 Casing wear band and method of attachment |
| 12/26/2002 | US20020195278 Steerable rotary drilling device |
| 12/26/2002 | US20020195275 Remote lock-out system and method for a horizontal directional drilling machine |
| 12/26/2002 | US20020195256 Downhole sealing |
| 12/26/2002 | US20020195249 Drillable junction joint |
| 12/26/2002 | US20020195243 Whipstock assembly |
| 12/25/2002 | CN2527698Y Walking drilling rig |
| 12/25/2002 | CN2527697Y Optical cable, electric cable passway hole-drilling machine |
| 12/25/2002 | CN1097134C Grouting pipe equipment and method of grouting using same for underground water well |
| 12/24/2002 | US6497296 Anchoring system for a directional drilling machine and methods of use |
| 12/24/2002 | US6497288 Deviated borehole drilling assembly |
| 12/24/2002 | US6497286 Method and apparatus for drilling a plurality of offshore underwater wells |
| 12/19/2002 | WO2002101193A1 A wellbore directional steering tool |
| 12/19/2002 | WO2002068789A3 Sonic drill head |
| 12/19/2002 | US20020189864 Method for the drilling of oil wells |
| 12/19/2002 | US20020189863 Drilling bit for drilling while running casing |
| 12/19/2002 | US20020189811 Roller pipe burster |
| 12/19/2002 | US20020189801 Method and system for accessing a subterranean zone from a limited surface area |
| 12/18/2002 | EP1266124A1 Arrangement for determining position of unmanned mining vehicles |
| 12/18/2002 | EP1029151B1 Method and device for crushing rock |
| 12/18/2002 | CN1385339A Device for releasing gear-rack stop piece of drill-frame support |
| 12/17/2002 | US6494272 Drilling system utilizing eccentric adjustable diameter blade stabilizer and winged reamer |
| 12/15/2002 | CA2350681A1 Pipe centralizer and method of attachment |
| 12/12/2002 | WO2002099245A1 Use of helically wound tubular structure in the downhole environment |
| 12/12/2002 | WO2002099243A1 Apparatus and method for rotary bored drilling |
| 12/12/2002 | WO2002099241A2 Method and apparatus for determining drilling paths to directional targets |
| 12/12/2002 | US20020185315 Wellbore directional steering tool |
| 12/12/2002 | US20020185314 Anti-rotation device for a steerable rotary drilling device |
| 12/12/2002 | US20020185274 Apparatus and methods for expanding tubulars in a wellbore |
| 12/11/2002 | EP1264960A2 Drilling tool with non rotating sleeve |
| 12/11/2002 | EP1264067A1 Foundation for suction in installation of conductor casing |
| 12/11/2002 | CN1095920C Boom arrangement for rock drilling apparatus |
| 12/10/2002 | US6491476 Method and apparatus for the trenchless laying of pipework underground |
| 12/10/2002 | US6491115 Directional drilling machine and method of directional drilling |
| 12/10/2002 | US6491101 Apparatus for establishing branch wells from a parent well |
| 12/05/2002 | WO2002068797A3 Oscillating shear valve for mud pulse telemetry |
| 12/05/2002 | US20020179336 Drilling tool with non-rotating sleeve |
| 12/05/2002 | US20020179306 Use of helically wound tubular structure in the downhole environment |
| 12/05/2002 | US20020179301 Method and apparatus for placing and interrogating downhole sensors |
| 12/04/2002 | EP1262268A1 High-speed chemical drill |
| 12/04/2002 | EP1051560B1 Downhole motor assembly |
| 12/03/2002 | US6488105 Method and apparatus for subsurface exploration |
| 12/03/2002 | US6488104 Directional drilling assembly and method |
| 12/03/2002 | US6488090 Method and apparatus for accurate milling of windows in well casings |