| Patents for E21B 7 - Special methods or apparatus for drilling (22,064) |
|---|
| 10/10/2006 | CA2394488C Welded joints for rotary-vibratory drills having reduced stress |
| 10/10/2006 | CA2353351C Method for drilling a wellbore using a bi-center drill bit |
| 10/10/2006 | CA2225050C Arrangement for a telescope feeder of a rock-drilling machine |
| 10/05/2006 | WO2006105013A2 Multiple pulsejet boring device |
| 10/05/2006 | WO2006017414A3 Drill bit assembly |
| 10/05/2006 | WO2005099424A3 Rotary vector gear for use in rotary steerable tools |
| 10/05/2006 | WO2005049955A3 Low friction face sealed reaction turbine rotors |
| 10/05/2006 | US20060219443 Tool for excavating an object |
| 10/05/2006 | US20060219440 Slip grip drilling tool |
| 10/05/2006 | DE102005014230A1 Boring placement device for use in slope, has slope guide with guide rails running parallel to each other and aligned slopewards, where drilling apparatus is relocatable along guide rails |
| 10/05/2006 | DE102005011968A1 Device for forming boreholes on soil, has optical path for measuring device and marking sight provided within boring hammer |
| 10/05/2006 | CA2600872A1 Multiple pulsejet boring device |
| 10/05/2006 | CA2600871A1 System for rapidly boring through materials |
| 10/05/2006 | CA2600722A1 Cryogenic pulsejet |
| 10/05/2006 | CA2541666A1 Directional drilling |
| 10/04/2006 | EP1706574A1 Method and apparatus for directional drilling |
| 10/04/2006 | EP1297241B1 Method for drilling and casing a wellbore with a pump down cement float |
| 10/04/2006 | EP1194675B1 Steerable rotary drilling device and directional drilling method |
| 10/04/2006 | CN1278011C Method, system and device for controlling drilling tools an horizontal drilling machine |
| 10/04/2006 | CA2505564A1 Speed sensitive rotational drive steerable drilling system |
| 10/03/2006 | US7114583 Tool and method for drilling, reaming, and cutting |
| 10/03/2006 | US7114581 Active controlled bottomhole pressure system & method |
| 10/03/2006 | US7114576 Method and arrangement of controlling of percussive drilling based on the stress level determined from the measured feed rate |
| 10/03/2006 | CA2326489C Drillstring with stabilisers for re-entering a primary wellbore |
| 10/03/2006 | CA2250483C Well system |
| 10/03/2006 | CA2179166C Downhole tool |
| 09/28/2006 | DE19736662B4 Abbaueinrichtung für den Untertagebergbau Mining equipment for underground mining |
| 09/27/2006 | CN2821130Y Ant-oblique device for reverse vertical hole construction |
| 09/27/2006 | CN2821129Y Full hydraulic crawler type rotary digging drill machine of large triangle structure |
| 09/27/2006 | CN2821128Y Drilling machine derrick mounted on ground |
| 09/27/2006 | CN2821127Y Intermittent creeping pusher drilling machine |
| 09/27/2006 | CN2820821Y Integrated pushing and moving device for new drilling machine |
| 09/27/2006 | CN1839244A Acoustic heads and assemblies and uses thereof |
| 09/27/2006 | CN1277041C Mining and tunneling device |
| 09/26/2006 | US7111695 Pneumatic rock-boring device and method for horizontal drilling using compressed air and drilling medium |
| 09/26/2006 | US7111694 Fixed blade fixed cutter hole opener |
| 09/26/2006 | US7111692 Apparatus and method to reduce fluid pressure in a wellbore |
| 09/26/2006 | US7111686 Vessel provided with a device for removing and/or installing a sub-structure of a drilling or production platform |
| 09/21/2006 | WO2006099637A2 Rock drill and method of breaking rock |
| 09/21/2006 | US20060207799 Drilling tool for drilling web of channels for hydrocarbon recovery |
| 09/21/2006 | US20060207798 Steerable drilling system |
| 09/21/2006 | US20060207794 Reversible penetrating machine with a springless pneumatically loaded differential air distributing mechanism |
| 09/21/2006 | US20060207760 Collapsible expansion cone |
| 09/20/2006 | EP1703075A1 Downhole deflector member |
| 09/20/2006 | EP1702133A1 Method for drilling and lining a wellbore |
| 09/20/2006 | CN2818759Y Stabilized linked platform apparatus |
| 09/20/2006 | CN1276166C Device for drilling or draining holes in soil or rock |
| 09/19/2006 | US7110266 Multiple element rectification circuit |
| 09/19/2006 | US7108084 Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells |
| 09/19/2006 | US7108083 Apparatus and method for completing an interval of a wellbore while drilling |
| 09/19/2006 | US7108082 Hole reaming apparatus and method |
| 09/19/2006 | US7108081 Instrumented internal blowout preventer valve for measuring drill string drilling parameters |
| 09/19/2006 | US7108080 Method and apparatus for drilling a borehole with a borehole liner |
| 09/19/2006 | US7108072 Lubrication and self-cleaning system for expansion mandrel |
| 09/19/2006 | US7108066 Variable density treatment fluids and methods of using such fluids in subterranean formations |
| 09/19/2006 | CA2316796C Downhole apparatus |
| 09/19/2006 | CA2245342C Deviated borehole drilling assembly |
| 09/19/2006 | CA2229109C Methods of completing a subterranean well and associated apparatus |
| 09/19/2006 | CA2189834C Method and apparatus for navigational drilling with a downhole motor employing independent drill string and bottomhole assembly rotary orientation and rotation |
| 09/14/2006 | WO2006096110A1 Rotation device for a boom of a mining or constructions work rig, rig and boom |
| 09/14/2006 | US20060201715 Drilling normally to sub-normally pressured formations |
| 09/14/2006 | US20060201713 Deviated drilling method for water production |
| 09/14/2006 | US20060201711 Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells |
| 09/14/2006 | US20060201691 Locking mechanism |
| 09/14/2006 | CA2595525A1 Rotation device for a boom of a mining or constructions work rig, rig and boom |
| 09/13/2006 | EP1700002A2 High temperature environment tool system and method |
| 09/13/2006 | EP1700001A2 Instrumented internal blowout preventer valve for measuring drill string drilling parameters |
| 09/13/2006 | CN2816323Y Concrete foundation high-precision level boring device |
| 09/13/2006 | CN2816322Y Apparatus for boring construction |
| 09/13/2006 | CN2816321Y Intermittent creepage propelling type drilling well device |
| 09/13/2006 | CN1833089A Device for transporting particles of a magnetic material and tool comprising such a device |
| 09/13/2006 | CN1274939C Integrated transmitter surveying while boring (SWB) entrenching powering device for continuation of guided bore hole |
| 09/13/2006 | CN1274911C Bi-directional cement soil mixing pile machine |
| 09/12/2006 | US7104344 Percussion drilling head |
| 09/12/2006 | US7104332 Method and apparatus for creating a cemented lateral junction system |
| 09/12/2006 | US7104190 Method employing high kinetic energy for working of material |
| 09/12/2006 | CA2170174C Steerable rotary drilling systems |
| 09/07/2006 | US20060196696 Electrically sequenced tractor |
| 09/07/2006 | US20060196695 Deep water drilling with casing |
| 09/07/2006 | US20060196694 Electrically sequenced tractor |
| 09/07/2006 | US20060196693 Perforating apparatus, firing assembly, and method |
| 09/07/2006 | DE102005036472B3 Closed geothermal heat exchanger producing process for heat extraction involves making two deep borings impermeable to liquid and connecting them to each other |
| 09/06/2006 | CN1273761C Bundle of pipes and method for parallel arrangement of pipes according to bore and swivel method |
| 09/05/2006 | USRE39259 Apparatus and method for providing electrical transmission of power and signals in a directional drilling apparatus |
| 09/05/2006 | US7100713 Expandable apparatus for drift and reaming borehole |
| 09/05/2006 | US7100710 Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells |
| 09/05/2006 | US7100709 Feed table pivot pin constraining device |
| 09/05/2006 | US7100707 Stabilized soil core samples and method for preparing same |
| 09/05/2006 | CA2367608C Method and apparatus for accurate milling of windows in well casings |
| 08/31/2006 | WO2006089400A1 A method of geothermal loop installation |
| 08/31/2006 | WO2006089349A1 An apparatus for driving a shaft in an excavating device |
| 08/31/2006 | WO2006051168A9 Arrangement for sucking dust |
| 08/31/2006 | WO2006045134B1 Device for guiding and tensioning supply lines |
| 08/31/2006 | US20060191719 Method of geothermal loop installation |
| 08/31/2006 | US20060191718 Impact excavation system and method with injection system |
| 08/31/2006 | US20060191717 Impact excavation system and method with two-stage inductor |
| 08/31/2006 | US20060191716 Well drilling and production using a surface blowout preventer |
| 08/31/2006 | US20060191684 Assembly for determining thermal properties of a formation while drilling or perforating |
| 08/31/2006 | DE10241610B4 Adapter zum Verbinden einer einzuziehenden Rohrleitung mit einer Zugvorrichtung Adapter for connecting a pipe recovered with a traction device |
| 08/30/2006 | EP1171946B1 High frequency switch-mode dc powered computer system |