| Patents for E21B 7 - Special methods or apparatus for drilling (22,064) |
|---|
| 11/27/2008 | WO2008144164A1 Reusable filters for fluid loss measurements of drilling fluids |
| 11/27/2008 | WO2008144096A1 Method and system for particle jet boring |
| 11/27/2008 | WO2008143577A1 A device for drilling in earth-layers and rock |
| 11/27/2008 | WO2008142201A1 Arrangement for employing drill steel centralizer travelling on feed beam of rock drill machine |
| 11/27/2008 | US20080289877 System and method for performing a drilling operation in an oilfield |
| 11/27/2008 | US20080289876 Method and system for monitoring auxiliary operations on mobile drilling units and their application to improving drilling unit efficiency |
| 11/27/2008 | US20080289829 Floatation module and method |
| 11/27/2008 | DE112007000179T5 Lochbohrsystem Lochbohrsystem |
| 11/27/2008 | CA2687405A1 Arrangement for employing drill steel centralizer travelling on feed beam of rock drill machine |
| 11/27/2008 | CA2685290A1 System and method for performing a drilling operation in an oilfield |
| 11/27/2008 | CA2684587A1 Method and system for particle jet boring |
| 11/26/2008 | CN201155299Y Tractor boring machine |
| 11/26/2008 | CN101313125A A bearing in connection with a boom |
| 11/25/2008 | US7455127 Apparatus and method for improving multilateral well formation and reentry |
| 11/25/2008 | US7455124 Valve tester suspension assembly |
| 11/23/2008 | CA2603715A1 Method and apparatus for re-entering an abandoned well |
| 11/20/2008 | WO2008140760A1 Impact excavation system and method with particle separation |
| 11/20/2008 | WO2007103707A3 Systems and methods for using an umbilical |
| 11/20/2008 | US20080283258 Striking device of a power tool |
| 11/20/2008 | CA2687232A1 Remotely operated water bottom based drilling system using cable for auxiliary operations |
| 11/19/2008 | EP1991805A2 A failure protection apparatus for a pressure control assembly |
| 11/19/2008 | EP1781889B1 Improvements in or relating to subsea drilling |
| 11/19/2008 | CN201152295Y Crawler type all-hydraulic tunnel drilling rig hydraulic system for coal mine |
| 11/19/2008 | CN201152145Y Vertical type horizontal directional drilling rig |
| 11/19/2008 | CN201152144Y Vertical type horizontal directional drilling rig with guide wheel |
| 11/19/2008 | CN201152143Y Conduit pipe vertical type horizontal directional drilling rig |
| 11/19/2008 | CN101310089A Device and method for feeding particles into a stream |
| 11/19/2008 | CN101307675A Multifunctional engineering drill |
| 11/18/2008 | US7451837 Advanced expandable reaming tool |
| 11/18/2008 | US7451836 Advanced expandable reaming tool |
| 11/18/2008 | US7451821 Blow out preventer transfer platform |
| 11/18/2008 | US7451818 Method of reducing sand production from a wellbore |
| 11/18/2008 | US7451814 System and method for producing fluids from a subterranean formation |
| 11/18/2008 | CA2490128C Rotating drilling head drive |
| 11/17/2008 | CA2591362A1 Method of and apparatus for pulling a pipe |
| 11/13/2008 | WO2008137078A1 Constant-mode auto-drill with pressure derivative control |
| 11/13/2008 | WO2008137042A1 Method and apparatus for establishing a manual governor control setting in an electro-hydraulic system |
| 11/13/2008 | WO2008136926A1 Shallow/intermediate water multipurpose floating platform for arctic environments |
| 11/13/2008 | WO2008136624A2 Non-oscillatory rock cutting apparatus using hydraulic pressure and method of controlling hydraulic pressure thereof |
| 11/13/2008 | WO2008107826A3 Reservoir stimulation while running casing |
| 11/13/2008 | WO2008070648A3 Subsea manifold system |
| 11/13/2008 | WO2007136485A3 Methane extraction method and apparatus using high-energy diode lasers or diode-pumped solid state lasers |
| 11/13/2008 | US20080277166 Downhole Drilling of a Lateral Hole |
| 11/13/2008 | US20080277131 Excavating method and apparatus |
| 11/12/2008 | EP1990504A2 Drilling rig, wherein the mast is not subjected to compressive stresses |
| 11/12/2008 | EP1990503A1 Device and method for explosive drilling |
| 11/12/2008 | EP1989394A1 Method and device for automatic calibration of a rock drilling joint and rock drilling rig comprising such a device |
| 11/12/2008 | EP1989393A1 Method and device for controlling the drilling direction of a rock drilling rig |
| 11/12/2008 | EP1989390A2 Running bore-lining tubulars |
| 11/12/2008 | CN201149009Y Double-closed type hydraulic system of exploration drill |
| 11/12/2008 | CN201148977Y Mountain area drilling machine air compressor apparatus |
| 11/12/2008 | CN201148838Y Drill head for branch wellbore reentrance |
| 11/12/2008 | CN201148837Y Circular arc whipstock for canula window opening |
| 11/12/2008 | CN101302922A Construction method of horizontal orienting drill crossing sand cobble and gravel formation |
| 11/12/2008 | CN100432367C Automatic perpendicular drilling tool |
| 11/11/2008 | US7448454 Method and system for return of drilling fluid from a sealed marine riser to a floating drilling rig while drilling |
| 11/11/2008 | US7448446 Thru tubing tool and method |
| 11/11/2008 | US7448151 Tool for excavating an object |
| 11/06/2008 | WO2008134266A1 Subsea well control system and method |
| 11/06/2008 | WO2008133523A1 Seal for a drill string |
| 11/06/2008 | WO2008102085A3 Device for realising and locating an opening in a wall located in an opaque soft environment |
| 11/06/2008 | WO2006076547B1 System and method for producing fluids from a subterranean formation |
| 11/06/2008 | US20080271925 Acid tunneling bottom hole assembly |
| 11/06/2008 | US20080271924 Drilling Method and Apparatus |
| 11/06/2008 | DE102007016823A1 Bohrsystem Drilling system |
| 11/06/2008 | CA2685021A1 Seal for a drill string |
| 11/05/2008 | CN201144895Y Self-loading type variable-frequency electric drive well repairing platform hydraulic device |
| 11/05/2008 | CN201144648Y Variable diameter stabilizer for gas drilling |
| 11/05/2008 | CN201144640Y Hydraulic telescopic door frame type drill |
| 11/05/2008 | CN201144639Y Ground auger for garden |
| 11/05/2008 | CN201144432Y Crawler type multifunctional rotary drilling rig |
| 11/05/2008 | CN101298831A High pressure gas jet flow boring tool with adjustable drilling direction |
| 11/05/2008 | CN101298830A Vertical shaft soft rock special drill construction technique |
| 11/04/2008 | US7445063 Rock drill bit assembly |
| 11/04/2008 | US7445060 Steerable drill bit arrangement |
| 11/04/2008 | US7445059 Drill string deflecting apparatus |
| 11/04/2008 | US7445058 Nozzle unit and method for excavating a hole in an object |
| 11/03/2008 | CA2630223A1 Acid tunneling bottom hole assembly |
| 10/30/2008 | WO2008130242A1 A method and a device for intervention in an underwater production well |
| 10/30/2008 | WO2008129128A1 Method of directing drilling pattern in curved tunnels, rock drilling rig, and software product |
| 10/30/2008 | WO2008094932A3 Hinge-over riser assembly |
| 10/29/2008 | EP1985793A2 Device for drilling and/or rotary percussion drilling in stone material |
| 10/29/2008 | CN201141287Y Minute borehole hydropower presser |
| 10/29/2008 | CN201141281Y Rotary digging drill rig with slurry level automatic control device |
| 10/29/2008 | CN101297095A Extended reach drilling apparatus and method |
| 10/29/2008 | CN101294480A Device for drilling miniature borehole on ultra-short radius of coiled tubing |
| 10/28/2008 | CA2531930C Formation cutting method and system |
| 10/23/2008 | WO2008127146A1 Screw downhole motor for slant-hole directional and horizontal drilling |
| 10/23/2008 | WO2008125830A1 Installation of underwater ground anchorages |
| 10/23/2008 | WO2008125735A1 Method of modifying drilling pattern, rock drilling rig, and software product |
| 10/23/2008 | US20080257608 Reaming and stabilization tool and method for its use in a borehole |
| 10/23/2008 | US20080257606 Flexible Drill Shaft |
| 10/23/2008 | US20080257605 Method of forming a bore |
| 10/23/2008 | US20080257604 Conduit, manufacture thereof and fusion process therefor |
| 10/23/2008 | US20080257603 Telescopic Conductor Casing for a Well Installation and a Method of Driving Same into the Underground |
| 10/23/2008 | DE102007018788A1 Drilling apparatus for introducing drill-holes in ground, has drilling fluid line comprising connection-side end that is connected with coupling station that includes reactive connections for parking of inlet pipes for unused drilling fluid |
| 10/23/2008 | DE102007017819A1 Mäkler Broker |
| 10/23/2008 | CA2684426A1 Method of modifying drilling pattern, rock drilling rig, and software product |
| 10/23/2008 | CA2684068A1 Installation of underwater ground anchorages |
| 10/22/2008 | EP1983148A1 Flexible Drill Shaft |