| Patents for E21B 7 - Special methods or apparatus for drilling (22,064) |
|---|
| 06/03/2008 | US7380614 Remotely operated water bottom based drilling system using cable for auxiliary operations |
| 06/03/2008 | CA2458838C Method and system for lining multilateral wells |
| 06/03/2008 | CA2438634C Method and apparatus for excavating soil material |
| 06/03/2008 | CA2396291C Method of drilling a bore hole |
| 06/03/2008 | CA2355798C Method of casing multilateral wells and associated apparatus |
| 05/29/2008 | WO2008063267A1 Apparatus, system, and method for casing hole formation in radial drilling operations |
| 05/29/2008 | WO2007145859A3 Electromagnetically determining the relative location of a drill bit using a solenoid source installed on a steel casing |
| 05/29/2008 | US20080121432 Directional drilling control |
| 05/29/2008 | US20080121431 Establishing Positions of Locating Field Detectors and Path Mapping in Underground Boring Tool Applications |
| 05/29/2008 | US20080121429 Subsea Drilling |
| 05/29/2008 | US20080121399 Method and system for accessing subterranean deposits from the surface |
| 05/28/2008 | EP1925549A2 Drillship or semi-submersible and multi-activity drilling assembly |
| 05/28/2008 | CN201065532Y Electric propulsion plant convenient for varying speed |
| 05/28/2008 | CN101189410A Method and device for drilling, particularly percussion drilling or rotary percussion drilling a hole in soil or rock material |
| 05/28/2008 | CN101187291A Multifunctional impact type well driller |
| 05/27/2008 | US7377335 Method and apparatus for movement of drilling equipment between adjacent locations |
| 05/27/2008 | US7377334 Rotating drilling head drive |
| 05/27/2008 | US7377328 Expandable anchor |
| 05/27/2008 | CA2421414C Anti-rotation device for use in a borehole |
| 05/22/2008 | US20080115975 Systems and methods employing a variable angle guide for a drill |
| 05/22/2008 | US20080115974 Steerable drilling system |
| 05/22/2008 | US20080115972 Method and apparatus for centralizing through tubing milling assemblies |
| 05/22/2008 | US20080115939 Radial Expansion of Tubular Members |
| 05/21/2008 | EP1923534A1 Steerable bit assembly and methods |
| 05/21/2008 | EP1730386A4 Rotating systems associated with drill pipe |
| 05/21/2008 | DE202008004473U1 Bohrantriebseinheit für ein Doppelbohrgestänge Bohrantriebseinheit for a Doppelbohrgestänge |
| 05/21/2008 | DE102006054435A1 Verfahren zum Einbringen einer Erdwärmesonde in das Erdreich und eine Vorrichtung Method for Installing a geothermal probe into the ground and apparatus |
| 05/21/2008 | CN101182755A Down-hole horizontal boring machine distribution control method and device thereof |
| 05/21/2008 | CN101182710A Spray grouting method and spray grouting boring tool |
| 05/20/2008 | US7373995 Method and apparatus for drilling curved boreholes |
| 05/20/2008 | CA2495985C System and method for subterranean access |
| 05/20/2008 | CA2473317C Method for reservoir navigation using formation pressure testing measurement while drilling |
| 05/15/2008 | WO2007081797B1 Rotary fluid-sealing structure using speed-reduction stages |
| 05/15/2008 | US20080111431 Linear actuator using magnetostrictive power element |
| 05/15/2008 | US20080110674 Closed-loop control of hydraulic pressure in a downhole steering tool |
| 05/15/2008 | US20080110673 Apparatus and methods for drilling a wellbore using casing |
| 05/15/2008 | US20080110642 Seal cup for a wellbore tool and method |
| 05/15/2008 | US20080110633 Method of controlling landing strings in offshore operations |
| 05/15/2008 | CA2765069A1 Method of drilling using an offshore riser |
| 05/14/2008 | EP1921250A1 Closed-loop control of hydraulic pressure in a downhole steering tool |
| 05/14/2008 | EP1920319A1 Adaptive user interface for rock drilling rig |
| 05/14/2008 | EP1920134A1 User interface for rock drilling rig |
| 05/14/2008 | CN201059185Y Automatic vertical drilling well flow distribution control device |
| 05/14/2008 | CN201059184Y Automatic vertical drilling well thrust actuating unit |
| 05/14/2008 | CN101180446A Method for drilling stable borehole |
| 05/14/2008 | CN100387803C Down-hole multiple radialized holes ultra-deep boring device by abrasive water jet |
| 05/13/2008 | US7370712 Under reamer |
| 05/13/2008 | US7370710 Erectable arm assembly for use in boreholes |
| 05/13/2008 | US7370702 Single mill casing window cutting tool and method |
| 05/08/2008 | WO2008052353A1 System for mounting a pile driver |
| 05/08/2008 | US20080105466 Drag Bits with Dropping Tendencies and Methods for Making the Same |
| 05/08/2008 | US20080105463 Apparatus for, and method of, landing items at a well location |
| 05/08/2008 | US20080105462 Rotating Control Device Apparatus and Method |
| 05/08/2008 | US20080105433 Direct acting single sheave active/passive heave compensator |
| 05/08/2008 | US20080105432 Apparatus for Subsea Intervention |
| 05/08/2008 | DE102006051335A1 Gouge bit drill head for e.g. drilling, has drill flanges formed at contact pressure sides to laterally arranged radially adjustable drill flanges, such that sides slide and sealed together during radial movement of flanges |
| 05/08/2008 | CA2668291A1 System for mounting a pile driver |
| 05/07/2008 | CN201056986Y Non-decompressing workover rig for water injection well |
| 05/07/2008 | CN201056985Y Pedrail type liftable drilling rig for blasting hole construction |
| 05/07/2008 | CN201056984Y Gas-liquid linkage rock drill vehicle |
| 05/07/2008 | CN201056978Y Simple hydraulic drilling machine for mountain area |
| 05/07/2008 | CN101173598A Funicular curve well drilling rail design method using stratum natural deflecting rule |
| 05/06/2008 | US7367410 Method and device for liner system |
| 05/06/2008 | US7367404 Tubing seal |
| 05/06/2008 | CA2276851C Device and method to control the path of a drill hole |
| 05/01/2008 | US20080099247 Regulator Of Angle And Reactive Moment Of A Gerotor Type Motor Having A Spindle And Drilling Bit In A Bent Drilling String |
| 05/01/2008 | US20080099246 Using hydrostatic bearings for downhole applications |
| 05/01/2008 | US20080099201 Contaminant excluding junction and method |
| 04/30/2008 | EP1787006B1 Method for drilling oil and gas wells |
| 04/30/2008 | EP1751393A4 Telescopic feed beam for rock drill |
| 04/30/2008 | CN201053295Y Slide pushing type guiding drilling tool |
| 04/30/2008 | CN201053294Y Rotary pushing type guiding drilling tool |
| 04/30/2008 | CN201053293Y Multi-head equal-thickness deep stirring drill |
| 04/29/2008 | US7364008 System for imparting mechanical impulse energy to the ground |
| 04/29/2008 | US7363990 Cutting device and method for producing a cut hole |
| 04/29/2008 | US7363989 Device for a pulling tool for use in pipes and boreholes for the production of oil and gas |
| 04/29/2008 | CA2474991C Oil well servicing vehicle |
| 04/29/2008 | CA2408898C Well reference apparatus and method |
| 04/29/2008 | CA2375778C Rock drill and mounting frame |
| 04/29/2008 | CA2349112C Directional drill for railway drilling and method of using same |
| 04/29/2008 | CA2295463C Hydraulic in-the-hole percussion rock drill |
| 04/24/2008 | US20080093125 Geothermal heat pump application; noncircular hole helps prevent breakout |
| 04/24/2008 | US20080093124 Apparatus and methods for drilling a wellbore using casing |
| 04/24/2008 | US20080093123 Procedure for Installing Horizontal Drains for Uptake of Sea Water |
| 04/23/2008 | EP1914380A1 Expandable wellbore junction |
| 04/23/2008 | EP1914379A1 Underwater seafloor drilling rig |
| 04/23/2008 | CN201050302Y Oil gas well drill bit impulse jet flow sub |
| 04/23/2008 | CN201050301Y Vertically drilling tool |
| 04/23/2008 | CN201050300Y Fixed type wedge-shaped hole guiding device |
| 04/23/2008 | CN201050299Y Straight hole guiding device |
| 04/23/2008 | CN201050298Y Adjustable wedge-shaped hole guiding device |
| 04/22/2008 | US7360610 Drill bit assembly for directional drilling |
| 04/22/2008 | US7360609 Directional drilling apparatus |
| 04/22/2008 | US7360594 Drilling with casing latch |
| 04/22/2008 | CA2474226C Pressure compensation system for a steerable rotary drilling device |
| 04/19/2008 | CA2577749A1 Underwater seafloor drilling rig |
| 04/17/2008 | WO2008043985A2 Method and apparatus for running tubulars |
| 04/17/2008 | WO2008028075A3 Method and system for managing a drilling operation in a multicomponent particulate system |
| 04/17/2008 | WO2007065099B1 Roof drilling system improvements |
| 04/17/2008 | US20080087469 Track-mounted drilling machine with active suspension system |