| Patents for E21B 7 - Special methods or apparatus for drilling (22,064) |
|---|
| 12/28/2004 | CA2234689C Mill for wellbore milling operations |
| 12/23/2004 | WO2004081494A3 Determination of the orientation of a dowhole device |
| 12/23/2004 | US20040257836 Rapid current demand microprocessor supply circuit |
| 12/23/2004 | US20040256162 Split housing for rotary steerable tool |
| 12/23/2004 | US20040256161 Modular design for downhole ECD-management devices and related methods |
| 12/23/2004 | US20040256160 Mud diverter and method for horizontal drilling |
| 12/23/2004 | US20040256159 Underground drilling device employing down-hole radar |
| 12/23/2004 | US20040256157 Method and apparatus for drilling a borehole with a borehole liner |
| 12/23/2004 | US20040256155 Percussion drilling head |
| 12/23/2004 | US20040256154 Process and system for drilling and lining a bore hole |
| 12/23/2004 | US20040256153 Modular housing for a rotary steerable tool |
| 12/23/2004 | DE10325505A1 Steel bellows for reinforced concrete propulsion pipes, has coatings applied on carrying side of steel flange, and on circulation protection device and stay bolts with quartz sand spray |
| 12/22/2004 | EP1488071A1 Method and device for directional down-hole drilling |
| 12/22/2004 | CN2665340Y A toeing device |
| 12/22/2004 | CN1556892A Percussion drilling head |
| 12/22/2004 | CN1556301A Radiation well horizontal radiation pipe full hydraulic construction equipment |
| 12/21/2004 | CA2208906C Apparatus for completing a subterranean well and associated methods of using same |
| 12/16/2004 | WO2003106130B1 Collapsible expansion cone |
| 12/16/2004 | WO2003021073A3 Method and apparatus for replacement of underground pipe |
| 12/16/2004 | US20040251054 System for overburden drilling |
| 12/16/2004 | US20040251050 Method and apparatus for drilling with casing |
| 12/16/2004 | US20040251049 Method and arrangement of controlling of percussive drilling based on the stress level determined from the measured feed rate |
| 12/16/2004 | DE10323626A1 Tool for extracting and destroying brittle underground pipe has a pulling element to remove the pipe by preset amounts and with two servo grips to hold and crush the exposed sections |
| 12/16/2004 | DE10302443B4 Vorrichtung zum Bewegen eines Rohres An apparatus for moving a pipe |
| 12/16/2004 | DE10146025B4 Verfahren und System zum horizontalen Erdbohren sowie Schlagspitze und Verfahren zum Starten eines Schlagwerkzeugs Method and system for horizontal Erdbohren and striking tip and method for starting a striking tool |
| 12/15/2004 | EP1113976B1 Boom arrangement for rock drilling apparatus |
| 12/15/2004 | CN2663642Y Down-hole waterpower slave oscillation supercharger |
| 12/15/2004 | CN2663641Y Control device for guiding drilling well |
| 12/15/2004 | CN2663640Y Attached full hydraulic soil drilling machine |
| 12/15/2004 | CN2663639Y Drilling tool for eccentric heel tube of down-the-hole hammer |
| 12/14/2004 | US6830106 Multilateral well completion apparatus and methods of use |
| 12/09/2004 | US20040245020 Apparatus and methods for drilling a wellbore using casing |
| 12/09/2004 | US20040245018 Electrically sequenced tractor |
| 12/09/2004 | US20040244992 Full bore lined wellbores |
| 12/09/2004 | US20040244982 Substantially neutrally buoyant and positively buoyant electrically heated flowlines for production of subsea hydrocarbons |
| 12/09/2004 | US20040244970 Determination of thermal properties of a formation |
| 12/08/2004 | EP1483475A2 Steerable soil penetration system |
| 12/08/2004 | EP1141517B1 Drilling method |
| 12/08/2004 | CN2661901Y Power operated scraper for screw pore-forming |
| 12/07/2004 | US6827159 Steerable horizontal subterranean drill bit having an offset drilling fluid seal |
| 12/07/2004 | US6827158 Two-pipe on-grade directional boring tool and method |
| 12/07/2004 | CA2052691C Method of dynamically monitoring the orientation of a curve drilling assembly |
| 12/02/2004 | WO2004104360A2 Drill bit and drilling system with under -reamer- and stabilisation-section |
| 12/02/2004 | WO2004104359A1 Portable memory device for a mobile repair unit |
| 12/02/2004 | WO2004104358A2 Continuous on-bottom directional drilling method and system |
| 12/02/2004 | WO2004079147A3 Method and apparatus for drilling with casing |
| 12/02/2004 | US20040243309 Automated bore planning system for horizontal directional drilling |
| 12/02/2004 | US20040240973 Method and apparatus for transporting oil rig |
| 12/02/2004 | US20040240954 Ice auger adapter bit for cordless drills |
| 12/02/2004 | US20040238222 Directional borehole drilling system and method |
| 12/02/2004 | US20040238221 Steerable rotary drill bit assembly with pilot bit |
| 12/02/2004 | US20040238176 Early hydrocarbon production system |
| 12/02/2004 | US20040238171 Wellbore recovery operation |
| 12/02/2004 | DE10328609B3 Wet-drilling tool for drilling a hole in the ground comprises a passage device having a tubular dome with an inlet opening above a collecting container and a connecting rod connection for a boring rod |
| 12/02/2004 | DE10159712B4 Bohrgerät und Verfahren zum Herstellen von Erdbohrungen Drill and methods for making earth bores |
| 12/02/2004 | CA2525172A1 Portable memory device for a mobile repair unit |
| 12/01/2004 | CN1550636A 全向钻机 Omnidirectional rig |
| 11/30/2004 | US6824329 Method and apparatus for installing a duct around a longitunal member present at the stretch of installation |
| 11/25/2004 | WO2004101944A2 Method of and system for directional drilling |
| 11/25/2004 | WO2004085788A3 Method and arrangement for performing drilling operations |
| 11/25/2004 | US20040231893 Drill tool shaft-to-housing locking device |
| 11/25/2004 | US20040231854 Casing wear band and method of attachment |
| 11/25/2004 | DE10332571B3 Thermic drilling method for forming borehole in ice with initial formation of pilot bore and subsequent formation of main borehole via melting/rinsing drill head supplied with pressurized hot water |
| 11/24/2004 | EP1479870A2 Locking mechanism for drilling direction control device |
| 11/24/2004 | EP1478824A2 Well system |
| 11/24/2004 | EP1222356B1 Method and device for moving a tube in a borehole in the ground |
| 11/24/2004 | EP0852652B1 Method for isolating multi-lateral well completions while maintaining selective drainhole re-entry access |
| 11/24/2004 | CN2658371Y Integral amplifier |
| 11/24/2004 | CN2658370Y Whipstock driven by downhole motor |
| 11/23/2004 | US6820701 Visual probes and methods for placing visual probes into subsurface areas |
| 11/23/2004 | US6820691 Cementing tool and method |
| 11/23/2004 | CA2255299C Apparatus for controlling relative rotation |
| 11/23/2004 | CA2040071C Percussive rock cutting tool |
| 11/18/2004 | WO2004099556A1 System and method for forming an underground bore |
| 11/18/2004 | WO2004099550A2 Drilling aparatus |
| 11/18/2004 | WO2003042488A3 Deepwater slim hole well construction |
| 11/18/2004 | US20040228691 Modular pipe breaking assembly and method |
| 11/18/2004 | US20040226751 Drill shoe |
| 11/18/2004 | US20040226750 Connection design and sonde housing assembly for a directional drill |
| 11/18/2004 | US20040226747 Self-penetrating soil exploration device and associated methods |
| 11/18/2004 | US20040226723 Procedures and equipment for profiling and jointing of pipes |
| 11/18/2004 | US20040226712 Portable memory device for mobile workover rig |
| 11/18/2004 | CA2524395A1 Drilling apparatus |
| 11/17/2004 | EP1257723B1 Device for drilling, especially percussion or rotary percussion drilling, holes |
| 11/17/2004 | CN2656598Y Regulatable electro magnetic control rotary water jet spray nozzle |
| 11/16/2004 | CA2236570C Apparatus and method for forming a window or an outline thereof in the casing of a cased wellbore |
| 11/16/2004 | CA2181562C Milling tool |
| 11/11/2004 | WO2004097168A1 Method of creating a borehole in an earth formation |
| 11/11/2004 | WO2004097162A1 Transportation, storage, and installation system for rig utilities |
| 11/11/2004 | WO2004097161A1 Modular drilling rig substructure |
| 11/11/2004 | WO2004097160A2 System and method using a continuously variable transmission to control one or more system components |
| 11/11/2004 | WO2004097158A2 Fast moving drilling rig |
| 11/11/2004 | US20040223812 Method and apparatus for replacement of underground pipe |
| 11/11/2004 | US20040222024 Apparatus and method for directional drilling of holes |
| 11/11/2004 | US20040222023 Continuous on-bottom directional drilling method and system |
| 11/11/2004 | US20040221997 Methods and apparatus for wellbore construction and completion |
| 11/11/2004 | DE10157301B4 Druckmittelbetriebenes Erdbohrgerät und Verfahren zum Einziehen eines Produktrohrs in das Erdreich Pressure medium-operated earth boring and method for retracting a product pipe into the ground |
| 11/11/2004 | CA2727134A1 Systems and methods using a continuously variable transmission to control one or more system components |
| 11/11/2004 | CA2726969A1 Systems and methods using a continuously variable transmission to control one or more system components |
| 11/10/2004 | EP1475511A1 Omni-directional drilling machine |