| Patents for E21B 7 - Special methods or apparatus for drilling (22,064) |
|---|
| 08/12/2009 | CN201288503Y Multifunctional drill |
| 08/12/2009 | CN201288502Y Pit digging apparatus for small-sized loading machine |
| 08/12/2009 | CN201288501Y Full-hydraulic drive device while drilling of major diameter drill while drilling and casing |
| 08/12/2009 | CN201288500Y Rotary drilling hydraulic power head with vibrator |
| 08/12/2009 | CN101503944A Cementing method for gas storage well casing tube |
| 08/12/2009 | CN101503943A Tap water digging-free directional drilling method and equipment thereof |
| 08/12/2009 | CN100526597C Air-filling well-drilling sealing device |
| 08/11/2009 | US7571778 Method of drilling a bore hole |
| 08/11/2009 | US7571777 Method and apparatus for a monodiameter wellbore, monodiameter casing, monobore, and/or monowell |
| 08/11/2009 | CA2582365C Method and control system for directional drilling |
| 08/11/2009 | CA2550207C Method and apparatus for conducting earth borehole operations using coiled casing |
| 08/06/2009 | WO2009097158A1 Inverted drainholes |
| 08/06/2009 | WO2009095195A2 Method and device for creating a deep borehole |
| 08/06/2009 | WO2009095046A1 Method for trenchless laying of pipelines |
| 08/06/2009 | US20090194338 Method and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells |
| 08/06/2009 | US20090194334 System and method for drilling |
| 08/06/2009 | US20090194333 Ranging methods for developing wellbores in subsurface formations |
| 08/06/2009 | US20090194332 Method and apparatus for collecting drill bit performance data |
| 08/06/2009 | US20090194330 System, program products, and methods for controlling drilling fluid parameters |
| 08/06/2009 | US20090194329 Methods for forming wellbores in heated formations |
| 08/06/2009 | US20090194292 Inverted drainholes |
| 08/06/2009 | CA2713453A1 Method and device for creating a deep borehole |
| 08/06/2009 | CA2713430A1 Inverted drainholes |
| 08/05/2009 | EP2085567A1 Method for laying piping without digging |
| 08/05/2009 | EP2085566A2 Drilling assembly |
| 08/05/2009 | EP2084332A1 System for mounting a pile driver |
| 08/05/2009 | EP1929125B1 System for tracking and maintaining an on-grade horizontal borehole |
| 08/05/2009 | EP1497530B1 Method for increasing production from a wellbore |
| 08/05/2009 | CN201284621Y Variable angle control device for horizontal drilling rig in hard soil and soft rock |
| 08/05/2009 | CN201284620Y 注水式钻孔机 Water injection drilling machine |
| 08/05/2009 | CN201284619Y Large-diameter while-drilling pipe-following drill rig |
| 08/05/2009 | CN100523435C Method to install underground pipe casing |
| 08/04/2009 | US7568534 Dual-edge working surfaces for polycrystalline diamond cutting elements |
| 08/04/2009 | US7568529 Drill tool |
| 08/04/2009 | CA2521287C Dual wall drill string assembly |
| 08/04/2009 | CA2466771C Method and apparatus for a monodiameter wellbore, monodiameter casing, monobore, and/or monowell |
| 08/04/2009 | CA2387976C Direction control in well drilling |
| 07/30/2009 | WO2009094074A1 Adjustable bent housing apparatus and method |
| 07/30/2009 | US20090188766 Fastener driving tool |
| 07/30/2009 | US20090188721 Membrane method of making drilling fluids containing microbubbles |
| 07/30/2009 | US20090188720 System and method for drilling |
| 07/30/2009 | US20090188719 Drilling apparatus having in-line extending wings and driving method thereof |
| 07/30/2009 | US20090188718 Methods of detecting, preventing, and remediating lost circulation |
| 07/30/2009 | US20090188717 Method and a device for directional control of a rock drilling machine |
| 07/30/2009 | US20090188677 Small footprint drilling rig |
| 07/30/2009 | DE102008006392A1 Verfahren und Vorrichtung zum Erstellen einer Tiefbohrung Method and apparatus for creating a deep borehole |
| 07/30/2009 | CA2708853A1 Adjustable bent housing apparatus and method |
| 07/28/2009 | CA2432246C System for overburden drilling |
| 07/23/2009 | WO2009090421A2 Method and apparatus for drilling auxiliary holes |
| 07/23/2009 | US20090183921 Flow operated orienter |
| 07/23/2009 | US20090183920 Downhole Percussive Tool with Alternating Pressure Differentials |
| 07/23/2009 | US20090183919 Downhole Percussive Tool with Alternating Pressure Differentials |
| 07/23/2009 | US20090183918 Methods and systems for drilling auxiliary holes |
| 07/23/2009 | US20090183917 System and apparatus for locating and avoiding an underground obstacle |
| 07/23/2009 | US20090183916 System and method for enhanced wellbore perforations |
| 07/23/2009 | CA2824963A1 Method and apparatus for drilling auxiliary holes |
| 07/23/2009 | CA2708520A1 Method and apparatus for drilling auxiliary holes |
| 07/22/2009 | EP2079896A2 Offshore universal riser system |
| 07/22/2009 | CN201276970Y Pneumatic jumbolter |
| 07/22/2009 | CN101490358A Resonance enhanced drilling method and apparatus |
| 07/22/2009 | CN101487377A Method for top-driving casing job of drilling apparatus |
| 07/22/2009 | CN101487376A One-time excavation construction method for large-diameter large-depth pressure regulating well pilot shaft |
| 07/21/2009 | US7562723 Method for determining formation fluid entry into or drilling fluid loss from a borehole using a dynamic annular pressure control system |
| 07/21/2009 | CA2499228C Multi-lateral wellbore systems and methods for forming same |
| 07/21/2009 | CA2487874C Expandable drilling tool |
| 07/17/2009 | CA2780351A1 Flow operated orienter |
| 07/16/2009 | WO2009089528A2 Subsea drilling system and method for operating the drilling system |
| 07/16/2009 | WO2009089524A2 Method and device for subsea wire line drilling |
| 07/16/2009 | WO2009088935A1 Slim-hole parasite string |
| 07/16/2009 | WO2009088769A2 Vibratory unit for drilling systems |
| 07/16/2009 | WO2009088571A2 Counterbalance enabled power generator for horizontal directional drilling systems |
| 07/16/2009 | WO2009088499A1 Drill stand |
| 07/16/2009 | WO2009087069A1 Method of drilling a wellbore |
| 07/16/2009 | WO2009087068A2 Method of expanding a tubular element in a wellbore |
| 07/16/2009 | WO2009064967A4 Earth-boring tools attachable to a casing string and methods for their manufacture |
| 07/16/2009 | WO2009052981A3 Overdrilling head for displacing the ground surrounding a pipe and method for overdrilling |
| 07/16/2009 | US20090178853 Mobile soil sampling device with vacuum collector |
| 07/16/2009 | US20090178852 Drilling Assembly, Drilling Reamer Arm Assembly, And Methods Of Drilling |
| 07/16/2009 | US20090178851 Borehole drilling control system, method and apparatus |
| 07/16/2009 | US20090178850 Method and system for precise drilling guidance of twin wells |
| 07/16/2009 | US20090178849 Apparatus and Method For Producing Soil Elements Underground |
| 07/16/2009 | US20090178848 Subsea Drilling System and Method for Operating the Drilling System |
| 07/16/2009 | US20090178847 Method and Device for Subsea Wire Line Drilling |
| 07/16/2009 | US20090178809 Methods and Apparatus for Well Construction |
| 07/16/2009 | CA2711220A1 Vibratory unit for drilling systems |
| 07/16/2009 | CA2710802A1 Method of drilling a wellbore |
| 07/16/2009 | CA2705135A1 Counterbalance enabled power generator for horizontal directional drilling systems |
| 07/15/2009 | EP2032838A4 Impulse rotor generator |
| 07/15/2009 | CN201273142Y Self-orientation leading-in tool for downhole operation drilling tool of horizontal branching well |
| 07/15/2009 | CN201273141Y Self-tightening rope type drilling workover rig |
| 07/15/2009 | CN201273140Y Integrated drill rig |
| 07/15/2009 | CN201273139Y Multi-bit hole drilling machine |
| 07/15/2009 | CN101484658A Coupling for dual member pipe |
| 07/14/2009 | US7559379 Downhole steering |
| 07/14/2009 | US7559378 Portable and directional electrocrushing drill |
| 07/14/2009 | US7559365 Collapsible expansion cone |
| 07/14/2009 | CA2537437C Programming method for controlling a downhole steering tool |
| 07/14/2009 | CA2525382C Method of and system for directional drilling |
| 07/14/2009 | CA2525371C Continuous on-bottom directional drilling method and system |
| 07/14/2009 | CA2517978C Drilling with casing latch |