| Patents for E21B 7 - Special methods or apparatus for drilling (22,064) |
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| 02/27/2013 | CN102943621A Portable drilling machine capable of implementing wire-line core drilling |
| 02/27/2013 | CN102943620A Pressure-controlled drilling method based on drilling annulus wellbore multi-phase flow computing |
| 02/26/2013 | CA2695593C System and method for stress field based wellbore steering |
| 02/26/2013 | CA2684983C One trip milling system |
| 02/26/2013 | CA2544093C Fluid jet drilling tool |
| 02/23/2013 | CA2787592A1 Underwater drilling arrangement and method for making a bore |
| 02/23/2013 | CA2787583A1 Underwater drilling arrangement and method for making a bore |
| 02/22/2013 | DE202013000098U1 Druckplatte für manuelle Kernlochbohrer Plate for manual core drills |
| 02/21/2013 | WO2012088102A4 Method and apparatus for milling a zero radius lateral window in casing |
| 02/21/2013 | US20130043077 Methods and systems for designing and/or selecting drilling equipment using predictions of rotary drill bit walk |
| 02/21/2013 | US20130043076 Rotary Steerable Assembly Inhibiting Counterclockwise Whirl During Directional Drilling |
| 02/21/2013 | US20130043075 Drilling apparatus and method |
| 02/21/2013 | US20130043045 Flow stop valve |
| 02/21/2013 | US20130043036 Riser system |
| 02/21/2013 | US20130043025 Harvesting resource from variable pay intervals |
| 02/21/2013 | DE102011110622A1 Method for laying two pipes, particularly energy supply pipeline, such as gas pipeline and water supply pipeline, in ground, involves forming large bore channel in bore head by large cutting wheel driven by main drive for large pipeline |
| 02/20/2013 | EP2559846A2 Methods and systems for drilling |
| 02/20/2013 | EP2559842A1 A method of directing vertical drillings |
| 02/20/2013 | EP2559841A2 Valve for a downhole tool |
| 02/20/2013 | EP2558673A2 Methods and systems for drilling |
| 02/20/2013 | EP2558672A2 Ground-drilling device |
| 02/20/2013 | CN202745863U Device for controlling transverse vibration of drill column during reaming along with drill |
| 02/20/2013 | CN202745696U Rock traversing chambering device |
| 02/20/2013 | CN202745695U Hydraulic continuous hole-forming machine |
| 02/20/2013 | CN202745694U Rotary hot melting drill bit |
| 02/20/2013 | CN202745693U Pushing mechanism of in-the-hole drill |
| 02/20/2013 | CN202745692U Integrated core drilling machine for single cylinder with double functions tower crane |
| 02/20/2013 | CN202745691U Full-hydraulic multifunctional open-air mining drilling machine |
| 02/20/2013 | CN202745690U Preposed hydraulic wire pole drilling machine matched with tractor |
| 02/20/2013 | CN202745689U Double-layer arrangement structure of solid control module and electric control module for drilling machine |
| 02/20/2013 | CN202745688U Shallow hole drilling machine for geological exploration |
| 02/20/2013 | CN202745687U Reciprocating impact tunnel drilling machine |
| 02/20/2013 | CN102939431A Wear pad adjustment assembly |
| 02/20/2013 | CN102937012A Cement buoyant valve in gas pumping hole working sleeve and manufacture method thereof |
| 02/20/2013 | CN102937002A Deepwater well drilling device |
| 02/20/2013 | CN102937001A Well completion process of sandy cobble stratum radial well |
| 02/20/2013 | CN102158011B Power supply device for guide well drilling tool |
| 02/20/2013 | CN102094668B High-pressure hydraulic tunneling, pressure releasing and protrusion removing method for upper drainage roadway |
| 02/20/2013 | CN102080525B High-pressure gas injection hole-drilling pressure-releasing outburst prevention method |
| 02/20/2013 | CN101886541B Opposed steering large-power signal source system for long-distance large-caliber oil-gas pipeline |
| 02/20/2013 | CN101864897B Method for controlling eccentric displacement vector of rotary steering tool |
| 02/19/2013 | US8376067 System and method employing a rotational valve to control steering in a rotary steerable system |
| 02/19/2013 | US8376066 Combination whipstock and completion deflector |
| 02/19/2013 | US8376052 Method and system for surface production of gas from a subterranean zone |
| 02/19/2013 | CA2785500A1 Valve for a downhole tool |
| 02/14/2013 | US20130039703 Multifunctional Screw Drill and Reaming Device |
| 02/14/2013 | US20130037327 Steering Component, Steering Assembly and Method of Steering A Drill Bit In A Borehore |
| 02/14/2013 | US20130037326 Device for uncoupling a drill string, drilling system comprising such a uncoupling device, and use of such a system |
| 02/14/2013 | US20130037325 Lost circulation material from drilling fluid packaging |
| 02/13/2013 | EP2556308A2 Method for introducing an elongated element, in particular geo-thermal heat exchanger, into the soil |
| 02/13/2013 | CN202731780U Reamer |
| 02/13/2013 | CN202731752U Composite vibration drilling tool |
| 02/13/2013 | CN202731751U Drilling tool capable of exciting drill string to vibrate |
| 02/13/2013 | CN202731750U Vibration compression drilling tool |
| 02/13/2013 | CN202731749U Full-hydraulic audio-frequency vibrating drill |
| 02/13/2013 | CN202731748U Coal bed gas pipe distribution device |
| 02/13/2013 | CN202731747U Combined type tower-drill integrated core drill |
| 02/13/2013 | CN202731746U Vehicular full hydraulic coring machine designed through combination of modules |
| 02/13/2013 | CN202731745U Deep hole drill carriage for coal mine |
| 02/13/2013 | CN202731744U Front arm type real-time random lifting load mode pit drilling machine |
| 02/13/2013 | CN202731743U Movable horizontal drilling machine |
| 02/13/2013 | CN202731742U Sampling drill |
| 02/13/2013 | CN202728388U Oil cylinder supporting structure for longitudinal beam of rotary drilling rig |
| 02/13/2013 | CN102933789A Feed chain automatic tensioner |
| 02/13/2013 | CN102926730A Mining method for support pipe following air liquid spraying and drilling into coal bed gas of radial well |
| 02/13/2013 | CN102926686A Directional water feeder and directional drilling machine |
| 02/13/2013 | CN102926667A Drill floor towing device |
| 02/13/2013 | CN102926662A Resonance enhanced drilling method and apparatus |
| 02/13/2013 | CN102926661A Jet thrust borer |
| 02/13/2013 | CN102926660A Wheel-hidden-type pry seat |
| 02/13/2013 | CN102926659A Train-type automatic translational device for drill |
| 02/13/2013 | CN102926658A Wheel drilling machine |
| 02/13/2013 | CN102061899B Hydraulic pressure balance work over rig |
| 02/13/2013 | CN102052057B Pore water pressure orientator |
| 02/13/2013 | CN102022122B Support-type comprehensive tunneler |
| 02/13/2013 | CN102022083B Rotary guide well drilling tool |
| 02/13/2013 | CN102022082B A ground instruction transmission method for controlling rotary steering drilling tool and an apparatus for the same |
| 02/13/2013 | CN102003141B 监控式步履钻探设备 Monitor type walking drilling equipment |
| 02/13/2013 | CN101899950B Method for hydraulically drilling high-stress coal |
| 02/13/2013 | CN101663464B Method of directing drilling pattern in curved tunnels, rock drilling rig, and software product |
| 02/12/2013 | US8372036 Multi-layer heat assembly for a drug delivery device |
| 02/12/2013 | US8371399 Method and system for accessing subterranean deposits from the surface and tools therefor |
| 02/12/2013 | CA2687232C Remotely operated water bottom based drilling system using cable for auxiliary operations |
| 02/07/2013 | WO2013019223A1 Apparatus and method of landing a well in a target zone |
| 02/07/2013 | WO2012118807A3 Lateral well drilling apparatus and method |
| 02/07/2013 | WO2011161415A3 Apparatus associated with sub-sea operations |
| 02/07/2013 | US20130032408 Hydrocarbon Recovery Drill String Apparatus, Subterranean Hydrocarbon Recovery Drilling Methods, and Subterranean Hydrocarbon Recovery Methods |
| 02/07/2013 | US20130032407 Methods and systems for drilling |
| 02/07/2013 | US20130032406 Systems and Methods for Drilling Boreholes with Noncircular or Variable Cross-Sections |
| 02/07/2013 | US20130032405 Offshore Drilling Rig Fingerboard Latch Position Indication |
| 02/07/2013 | US20130032401 Methods and systems for drilling |
| 02/07/2013 | US20130032399 Systems and Methods for Directional Pulsed-Electric Drilling |
| 02/07/2013 | US20130032398 Pulsed-Electric Drilling Systems and Methods with Reverse Circulation |
| 02/07/2013 | US20130032397 Systems and Methods for Pulsed-Flow Pulsed-Electric Drilling |
| 02/07/2013 | US20130032396 Fluid transfer device usable in managed pressure and dual-gradient drilling |
| 02/07/2013 | US20130032353 Hydrocarbon Recovery Drill String Apparatus, Subterranean Hydrocarbon Recovery Drilling Methods, and Subterranean Hydrocarbon Recovery Methods |
| 02/07/2013 | DE102011109330A1 Controllable drilling device for drilling in hard soil and rock through horizontal drilling technique, has unit that for radial displacement of drill head from coaxial position that is aligned to longitudinal axis of outer rod |
| 02/07/2013 | DE102005029680B4 Vorrichtung und Verfahren zum Fügen nicht-rotationssymmetrischer Hohlprofile durch Einwalzen Apparatus and method for joining non-rotationally symmetrical hollow profiles by rolling |
| 02/07/2013 | CA2842598A1 Apparatus and method of landing a well in a target zone |
| 02/07/2013 | CA2839804A1 Drilling tool for laying a tube in the ground |