| Patents for E21B 7 - Special methods or apparatus for drilling (22,064) |
|---|
| 01/08/2009 | US20090008150 Drilling System |
| 01/08/2009 | US20090008112 Method and Apparatus for Moving In Formation the Modular Components of a Drilling Rig from Well to Well |
| 01/08/2009 | US20090008110 Mobile self-erecting directional drilling rig apparatus |
| 01/07/2009 | EP2011958A1 Auger |
| 01/07/2009 | EP2010831A1 Method and device for the utilization of supercritical subsurface steam in combination with supercritical thermal and hydraulic power stations |
| 01/07/2009 | CN201176850Y Crawler electric rotary drilling rig |
| 01/07/2009 | CN201176849Y Quick high precision positioning device for perforation of boring machine |
| 01/07/2009 | CN101338651A Pre-mixed abrasive high pressure water-jet system rotary pipe joint structure |
| 01/07/2009 | CN101338650A Pre-mixed abrasive high pressure water-jet boring device |
| 01/07/2009 | CN100449108C Tool for excavating an object |
| 01/06/2009 | US7473337 Remotely controlled decoking tool used in coke cutting operations |
| 01/06/2009 | US7472763 Wear resistant tubular connection |
| 01/06/2009 | US7472761 Boring tool tracking fundamentally based on drill string length, pitch and roll |
| 01/06/2009 | US7472755 Method for inspection and repair of a flexible joint |
| 01/06/2009 | CA2352746C Downhole apparatus and method for milling a window and at least one key-way in a well casing |
| 01/01/2009 | US20090003935 System and Method for Tightening String Sections to Form a String |
| 01/01/2009 | US20090000824 Tools and technology of radical and level drilling/well completion under ultra-short radius |
| 01/01/2009 | US20090000823 Method of Automatically controlling the Trajectory of a Drilled Well |
| 12/31/2008 | WO2009002996A1 Rotary steerable drilling system |
| 12/31/2008 | WO2009002590A1 High pressure energizable tube connector for a well and method of energizing the connector |
| 12/31/2008 | WO2009001123A2 Vertical direction adjustment tool for downhole drilling apparatus |
| 12/31/2008 | EP2009225A1 Method for providing a slab-shaped underground structure |
| 12/31/2008 | EP2007964A1 Steering tool |
| 12/31/2008 | CN201173088Y Downhole trolley |
| 12/31/2008 | CN201173087Y Deep sea core sampling boring machine drilling power head |
| 12/31/2008 | CN201172816Y Transmission gear on bidirectional mixing pile machine |
| 12/31/2008 | CN101333923A Method of automatically controlling the trajectory of a drilled well |
| 12/31/2008 | CN101333909A Dash-proof distant control boring machine and its control method |
| 12/31/2008 | CN100447372C Shallow drill assembly with separate jet pump |
| 12/31/2008 | CA2693023A1 Vertical direction adjustment tool for downhole drilling apparatus |
| 12/31/2008 | CA2691098A1 High pressure energizable tube connector for a well and method of energizing the connector |
| 12/30/2008 | US7469754 Apparatus for slant drilling |
| 12/30/2008 | CA2439963C Offshore floating production method |
| 12/30/2008 | CA2439459C Sonic drill head |
| 12/30/2008 | CA2185058C Tunnel boring machine |
| 12/25/2008 | US20080314644 Device for a Borehole Arrangement |
| 12/25/2008 | US20080314643 Drilling System and Methods of Drilling Lateral Boreholes |
| 12/25/2008 | US20080314642 Tubular Member Connection |
| 12/25/2008 | US20080314641 Directional Drilling System and Software Method |
| 12/25/2008 | US20080314640 Hydrocarbon recovery drill string apparatus, subterranean hydrocarbon recovery drilling methods, and subterranean hydrocarbon recovery methods |
| 12/24/2008 | WO2008157185A2 Mechanical and fluid jet drilling method and apparatus |
| 12/24/2008 | WO2008156375A1 Apparatus for directional control of a drilling tool |
| 12/24/2008 | WO2008104005A3 Casing window milling assembly |
| 12/24/2008 | WO2008058209A3 Offshore universal riser system |
| 12/24/2008 | WO2007109405A3 Method and system of controlling drilling direction using directionally sensitive resistivity readings |
| 12/24/2008 | EP2004946A1 Device for steering drilling tools |
| 12/24/2008 | EP2004945A2 Mobile drilling rig with dual carriers |
| 12/24/2008 | CN201170061Y Erosion resistance rotating control head base plate got gas drilling |
| 12/24/2008 | CN101328791A Method and system for accessing subterranean deposits from the surface |
| 12/24/2008 | CA2693687A1 Mechanical and fluid jet drilling method and apparatus |
| 12/23/2008 | US7467673 Rotary vector gear for use in rotary steerable tools |
| 12/23/2008 | US7467672 Orientation tool |
| 12/23/2008 | CA2551507C Downhole cutting device including a selectively presentable cutter |
| 12/23/2008 | CA2499226C Multi-lateral wellbore systems and methods for forming same |
| 12/18/2008 | WO2008134266B1 Subsea well control system and method |
| 12/18/2008 | WO2008127371A3 Subsea rov retrievable tree cap |
| 12/18/2008 | US20080308278 Adjustable threaded hanger and running tool |
| 12/17/2008 | EP1545839A4 Sonic drill |
| 12/17/2008 | CN201165847Y Rack pillar support pneumatic drilling machine |
| 12/17/2008 | CN101324174A Method for preventing well drilling riser pipe and drill stem from generating resonance |
| 12/17/2008 | CN100443922C Downhole signal source |
| 12/16/2008 | US7464774 Drill bit and system for drilling a borehole |
| 12/16/2008 | US7464770 Closed-loop control of hydraulic pressure in a downhole steering tool |
| 12/16/2008 | CA2392331C Subsea well intervention vessel |
| 12/11/2008 | WO2008151128A2 Dual density mud return system |
| 12/11/2008 | WO2008149063A1 Apparatus and method for improvements in wellbore drilling |
| 12/11/2008 | WO2008148939A1 Method of quarrying dimensional stone, and line drilling apparatus |
| 12/11/2008 | WO2008148514A2 Method and device for verifying the casing of a pipeline when the pipeline is inserted into a liquid-filled borehole |
| 12/11/2008 | WO2007143634A3 Insulation shroud with internal support structure |
| 12/11/2008 | US20080302577 Drill Bit |
| 12/11/2008 | US20080302573 Drilling tool for reducing cutter damage when drilling through formation changes, and methods of design and operation thereof |
| 12/11/2008 | US20080302535 Subsea Intervention Riser System |
| 12/11/2008 | US20080302534 Full bore lined wellbores |
| 12/11/2008 | DE102007005944B4 Schrägbohrgerät Oblique drill |
| 12/10/2008 | EP2000627A2 Directional boring machine for drilling underground ducts |
| 12/10/2008 | CN201162506Y Branching well window-opening tool with expansion tube |
| 12/10/2008 | CN201162491Y Film pipe group structure of nitrogen producing units |
| 12/10/2008 | CN201162490Y Full cover type prizing membrane separation nitrogen producing apparatus |
| 12/10/2008 | CN201162489Y Full screw earth auger |
| 12/10/2008 | CN201162488Y Rockbolt drilling machine |
| 12/10/2008 | CN101321846A Remotely controlled decoking tool used in coke cutting operations |
| 12/10/2008 | CN100441829C Slant device capable of recovering and fishing tool thereof |
| 12/10/2008 | CN100441828C Pile core constructing method |
| 12/09/2008 | US7464013 Dynamically balanced cutting tool system |
| 12/09/2008 | US7462581 Bridging agent, particularly Newberyite or Struvite; partially depolymerized starch derivative, especially a partially depolymerized crosslinked ether derivative of a starch; and a base fluid such as a drilling or well servicing fluid |
| 12/09/2008 | US7461707 Electric horizontal directional drilling machine system |
| 12/09/2008 | US7461706 Drilling apparatus with percussive action cutter |
| 12/04/2008 | WO2008144920A1 Method and apparatus for three dimensional geosteering |
| 12/04/2008 | WO2008129128A8 Method of directing drilling pattern in curved tunnels, rock drilling rig, and software product |
| 12/04/2008 | WO2008119821A3 Method and assembly for abrasive jet drilling |
| 12/04/2008 | US20080296063 Low ground pressure and amphibious coring system |
| 12/04/2008 | US20080296062 Dual Density Mud Return System |
| 12/04/2008 | US20080296029 Debris control arrangement for a whipstock and method |
| 12/04/2008 | DE102007025729A1 Production of geothermal energy collectors used in controlled horizontal rotary drilling comprises introducing one or more tubes for receiving geothermal energy for flow direction of the brine |
| 12/03/2008 | EP1996788A1 Drilling rig situated on the seabed, including a separation device |
| 12/03/2008 | CN201159048Y Desert sand-suction and boring tool |
| 12/03/2008 | CN101315020A Extendable excavating screw with hydraulic excavating blades |
| 12/02/2008 | US7458426 Embedding a steel pipe in an excavated well, excavating the underground on the front end of the embedded steel pipe to deepen the well, inserting a second steel pipe; expanding the second steel pipe radially by a tool inserted therein to increase the diameter, excavating, repeating |
| 11/28/2008 | CA2633961A1 Low ground pressure and amphibious coring system |
| 11/27/2008 | WO2008144710A1 System and method for performing a drilling operation in an oilfield |