| Patents for E21B 7 - Special methods or apparatus for drilling (22,064) |
|---|
| 09/12/2007 | EP1831499A1 Drilling unit |
| 09/12/2007 | EP1618258B1 Method for pneumatically picking up soil for use in suction devices and suction tube for this purpose and use of said suction tube |
| 09/12/2007 | EP1534653B1 Handheld tool for breaking up rock |
| 09/12/2007 | CN200946466Y Stepless speed-regulating workover machine |
| 09/12/2007 | CN200946458Y Combined slanting-proof quick-drilling utensil |
| 09/12/2007 | CN101035961A Sleeve arrangement |
| 09/12/2007 | CN100337010C Relay drilling machine without drill rods for rock and clay |
| 09/11/2007 | US7267184 Modular housing for a rotary steerable tool |
| 09/11/2007 | US7267182 Rock drilling rig and rock breaking machine |
| 09/11/2007 | US7267175 Apparatus and methods for forming a lateral wellbore |
| 09/11/2007 | CA2270109C Adjustable housing for a mud motor |
| 09/07/2007 | WO2007100287A1 Method and device for automatic calibration of a rock drilling joint and rock drilling rig comprising such a device |
| 09/07/2007 | WO2007100284A1 Method and device for controlling the drilling direction of a rock drilling rig |
| 09/07/2007 | CA2642614A1 Method and device for controlling the drilling direction of a rock-drilling rig |
| 09/06/2007 | US20070205022 Automated steerable hole enlargement drilling device and methods |
| 09/06/2007 | US20070205020 Formation dip geo-steering method |
| 09/06/2007 | US20070204993 Method for drilling and casing a wellbore with a pump down cement float |
| 09/06/2007 | DE102006010227A1 Rammbohrgerät mit pneumatischer Umsteuerung Ram boring machine with pneumatic reversing |
| 09/05/2007 | EP1682745B1 Method and device for the drilling of holes in ground or rocky material |
| 09/05/2007 | CN200943449Y Riser pipe for marine petroleum drilling well |
| 09/05/2007 | CN200943446Y Jet type hole-enlarging dredging device |
| 09/05/2007 | CN200943445Y Universal drill with angle adjusting and indication |
| 09/05/2007 | CN200943444Y Spiral digging machine |
| 09/05/2007 | CN200943443Y Mast leveling device of rotary digging drill |
| 09/05/2007 | CN101029560A Wellbottom rock-fragment abrasive jet-flowing drilling tool |
| 09/05/2007 | CN101029559A Long-spiral replaceable and extruded borehole construction |
| 09/05/2007 | CN101029558A Connected drilling rod construction of agitation pile |
| 09/05/2007 | CN101029489A Construction equipment and method for preparing said equipment for transportation |
| 09/05/2007 | CN100335738C High-pressure water jet drill bit capable of punching and cutting by switching of water pressure |
| 09/05/2007 | CN100335735C 击打力发生器 Hitting force generator |
| 09/04/2007 | US7264067 Method of drilling and completing multiple wellbores inside a single caisson |
| 09/04/2007 | CA2409062C Milling of casing using coiled tubing |
| 08/30/2007 | WO2007057426A3 Device and method for feeding particles into a stream |
| 08/30/2007 | US20070199720 Steel pipe for embedding-expanding, and method of embedding-expanding oil well steel pipe |
| 08/29/2007 | EP1825110A1 A drill rig and a method for controlling a fan therei |
| 08/29/2007 | EP1825095A1 Vibrational apparatus |
| 08/29/2007 | CN200940445Y Branch well re-insert guide device |
| 08/29/2007 | CN200940444Y Automatic guide system for horizontal positioning drill |
| 08/29/2007 | CN200940440Y Rotary digging drilling machine with continuous wall crab bucket function |
| 08/29/2007 | CN101027480A Method of developing and producing deep geothermal reservoirs |
| 08/29/2007 | CN101025075A Automatic inclination-proof drilling well apparatus |
| 08/28/2007 | US7261164 Floatable drill cuttings bag and method and system for use in cuttings disposal |
| 08/28/2007 | CA2336326C Milling system for forming a window in the wall of a tubular |
| 08/23/2007 | US20070196180 Drilling Rig Placed on the Sea Bed and Equipped for Drilling of Oil and Gas Wells |
| 08/23/2007 | US20070193780 Drilling device and method for producing undercut holes |
| 08/23/2007 | US20070193778 Methods and apparatus for drilling open hole |
| 08/23/2007 | US20070193777 Boring Tool Control using Remote Locator |
| 08/22/2007 | EP1820933A1 Tunnelling system |
| 08/22/2007 | EP1592865B1 Method of forming a window in a casing |
| 08/22/2007 | EP1472483B1 Conduit pipe |
| 08/22/2007 | EP1436487B1 Rock drilling apparatus and rock breaking machine |
| 08/22/2007 | EP1149227B1 Method and rock drilling apparatus for controlling rock drilling |
| 08/22/2007 | CN2937440Y Earth boring machine |
| 08/22/2007 | CN2937439Y Self-locking fixing device of perforating bullet, primacord, bullet rack |
| 08/22/2007 | CN1333150C Metal molten drilling method and drilling apparatus |
| 08/21/2007 | US7260479 Method for locating casing joints using measurement while drilling tool |
| 08/21/2007 | US7258176 Drill bit |
| 08/21/2007 | US7258165 Hole opener and drillable casing guide and methods of use |
| 08/21/2007 | US7258163 Method and system for production of gas and water from a coal seam using well bores with multiple branches during drilling and after drilling completion |
| 08/21/2007 | CA2444972C Apparatus and method for forming a pilot ledge in a wellbore |
| 08/21/2007 | CA2318853C Downhole motor assembly |
| 08/21/2007 | CA2305253C Method and system for drilling underbalanced radial wells utilizing a dual string technique in a live well |
| 08/21/2007 | CA2206926C Control device for a directional tool |
| 08/21/2007 | CA2161482C Method of installing or replacing underground pipe |
| 08/16/2007 | US20070187150 Steering Assembly and Steering Component |
| 08/16/2007 | US20070187148 Directional Reaming System |
| 08/16/2007 | US20070187147 Borehole drilling control system, method and apparatus |
| 08/16/2007 | US20070187146 Method and apparatus for a monodiameter wellbore, monodiameter casing, monobore, and/or monowell |
| 08/16/2007 | US20070187108 Offshore coiled tubing heave compensation control system |
| 08/16/2007 | US20070187085 One trip milling system |
| 08/16/2007 | US20070186639 System, method and apparatus for petrophysical and geophysical measurements at the drilling bit |
| 08/15/2007 | EP1818499A1 Apparatus for simultaneously drilling and casing boreholes |
| 08/15/2007 | EP1817474A2 Method and apparatus for jet-fluid abrasive cutting |
| 08/15/2007 | EP1669539A4 Angle and reactive torque control device for a gerotor type motor provided with a spindle and drilling bit in a bended drill string |
| 08/15/2007 | EP1529148B1 Welded joints for rotary-vibratory drills having reduced stress |
| 08/15/2007 | CN2934548Y Self-discharging type frequency-changeable electricity-driven well-repairing platform |
| 08/15/2007 | CN101016836A Method and system for accessing subterranean deposits from the surface and tools therefor |
| 08/14/2007 | US7255516 Method and apparatus for replacement of underground pipe |
| 08/14/2007 | US7255181 Method and device for the drilling of holes in ground or rocky material |
| 08/14/2007 | US7255180 Modular drill system requiring limited field assembly and limited equipment support |
| 08/14/2007 | CA2453768C Drilling with concentric strings of casing |
| 08/14/2007 | CA2439453C Oscillating shear valve for mud pulse telemetry |
| 08/14/2007 | CA2273568C A method of installing a casing in a well and apparatus therefor |
| 08/14/2007 | CA2150733C A rotatable pressure seal |
| 08/09/2007 | US20070181345 Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells |
| 08/09/2007 | US20070181343 Directional drilling control |
| 08/09/2007 | US20070181342 Hole coring system |
| 08/09/2007 | US20070181340 Drilling apparatus with percussive action cutter |
| 08/09/2007 | CA2575275A1 Directional drilling control |
| 08/08/2007 | EP1815102A1 One trip milling system |
| 08/08/2007 | EP1815101A1 Methods and apparatus for drilling, completing and configuring u-tube boreholes |
| 08/08/2007 | EP1399638B1 Hydrothermal drilling method and system |
| 08/08/2007 | CN2931755Y Wheeled type rotary digging driller |
| 08/08/2007 | CN1330845C Drilling method and tools and the use thereof |
| 08/08/2007 | CN1330844C Drill head steering controll method |
| 08/08/2007 | CN101012649A Bidirectional helix extruding-enlarging pile construction method and bidirectional helix closed extruding-enlarging aiguille |
| 08/07/2007 | US7253628 Tracking the positional relationship between a boring tool and one or more buried lines using a composite magnetic signal |
| 08/07/2007 | US7252164 Cutting structure based hydraulics |
| 08/07/2007 | US7252163 Downhole under-reamer tool |
| 08/07/2007 | US7252162 Method and device for injecting a fluid into a formation |