| Patents for E21B 7 - Special methods or apparatus for drilling (22,064) |
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| 01/08/2014 | EP2681408A1 Mechanical force generator for a downhole excitation apparatus |
| 01/08/2014 | EP2681397A2 System and method for coupling a drill bit to a whipstock |
| 01/08/2014 | CN203383764U Power double-mixing type workover rig |
| 01/08/2014 | CN203383733U Guiding reamer |
| 01/08/2014 | CN203383732U Special guard plate |
| 01/08/2014 | CN203383731U Push pointing type rotary guide well drilling device |
| 01/08/2014 | CN203383730U Directive rotary steering well drilling steering tool |
| 01/08/2014 | CN203383729U Translation arm of drill jambo |
| 01/08/2014 | CN203383728U Rock drilling jumbo rock drill propeller |
| 01/08/2014 | CN203383722U Hydraulic vertical-lifting digging machine |
| 01/08/2014 | CN103502555A Resonance enhanced rotary drilling module |
| 01/08/2014 | CN103498638A Underwater top driving device for deep-layer continuous coring |
| 01/08/2014 | CN103498637A Length-adjustable rotary drill rig |
| 01/08/2014 | CN102678121B Layered top-controlling filling mining method for residual ores in deep hole in diskless area |
| 01/08/2014 | CN102635311B Orienting device for drilling of radial horizontal well |
| 01/08/2014 | CN102364029B Integrated window-opening side-drilling tool |
| 01/08/2014 | CN102278067B 造斜器 Whipstock |
| 01/08/2014 | CN102251745B Positive pressure type rigid granule high-pressure injection device |
| 01/07/2014 | US8623107 Gas hydrate conversion system for harvesting hydrocarbon hydrate deposits |
| 01/07/2014 | US8622150 Boring tool tracking fundamentally based on drill string length, pitch and roll |
| 01/07/2014 | US8622137 Subsea structure installation or removal |
| 01/07/2014 | CA2527271C Method for precise drilling guidance of twin wells |
| 01/03/2014 | WO2014004092A1 High strain rate method of producing optimized fracture networks in reservoirs |
| 01/03/2014 | WO2014001601A1 Method and apparatus for use of a drilling device meant for down-the-hole drilling |
| 01/02/2014 | US20140000967 Fluid drilling head with sliding gauging ring |
| 01/02/2014 | US20140000965 Method for Hydrocarbon Well Completion |
| 01/02/2014 | US20140000963 System And Method For Moving A First Fluid Using A Second Fluid |
| 01/02/2014 | US20140000898 Method of cooling downhole element using nanoenhanced downhole fluid |
| 01/01/2014 | EP2678513A1 Adjustable body supported cutter arms for underreamer |
| 01/01/2014 | EP2678512A1 Method of high power laser-mechanical drilling |
| 01/01/2014 | CN203374209U Water well drilling rig power head device with vibration smashing function |
| 01/01/2014 | CN203374208U Vehicle-mounted electric hydraulic vibrating type well drill |
| 01/01/2014 | CN203374207U Multifunctional casing running and grouting device for well drilling |
| 01/01/2014 | CN203374206U Waterpower drilling machine suitable for drilling holes in all directions |
| 01/01/2014 | CN203374205U Slip type whipstock |
| 01/01/2014 | CN203374204U Controllable bent connector guide device |
| 01/01/2014 | CN103492663A Galvanically isolated exit joint for well junction |
| 01/01/2014 | CN103492660A Offshore fluid transfer systems and methods |
| 01/01/2014 | CN103492659A Method and system of drilling laterals in shale formations |
| 01/01/2014 | CN103485755A Drilling process of anhydrous sodium sulfate mine well |
| 01/01/2014 | CN103485721A High-low-pressure hydraulic hole flushing switcher |
| 01/01/2014 | CN103485720A Hypothermal splitting assisted drilling machine |
| 01/01/2014 | CN103485719A Natural gas horizontal well drilling mechanism |
| 01/01/2014 | CN103485718A Anti-friction drag-reducing tool based on pulse excitation |
| 01/01/2014 | CN103485717A Fully-hydraulic four-arm anchor rod/anchor cable drill carriage |
| 01/01/2014 | CN103485716A Karst-geology rotary-drill guide-hole construction method |
| 01/01/2014 | CN103485715A Drilling tool capable of controlling reactive torque |
| 01/01/2014 | CN103485714A Drilling mechanism and drill loader |
| 01/01/2014 | CN103485713A Method for correcting position of target point in communicated well drilling process |
| 01/01/2014 | CN102628336B Construction method of batter pile construction drilling machine |
| 12/31/2013 | US8616303 Helical drilling apparatus, systems, and methods |
| 12/31/2013 | US8616302 Pulsed electric rock drilling apparatus with non-rotating bit and directional control |
| 12/31/2013 | US8616287 Apparatus for improving well safety and recovery and installation process thereof |
| 12/31/2013 | US8616286 Riser pipe with adjustable auxiliary lines |
| 12/31/2013 | CA2685290C System and method for performing a drilling operation in an oilfield |
| 12/27/2013 | WO2013192524A2 System an method for determining incremental progression between survey points while drilling |
| 12/27/2013 | WO2013191832A1 Disintegrable centralizer |
| 12/27/2013 | WO2013191730A1 Long lateral completion system and method |
| 12/27/2013 | WO2013190206A1 Joining of manganese steel railway line components by direct welding |
| 12/27/2013 | CA2877793A1 System and method for determining incremental progression between survey points while drilling |
| 12/27/2013 | CA2877535A1 Drive systems for use with long lateral completion systems and methods |
| 12/27/2013 | CA2877530A1 Mobile rig and method |
| 12/27/2013 | CA2877524A1 Mast and guy wire systems for use with long lateral completion systems and methods |
| 12/27/2013 | CA2877499A1 Long lateral completion system and method |
| 12/26/2013 | US20130343858 Method of deploying a mobile rig system |
| 12/26/2013 | US20130341124 Vehicle-Attached Lifting and Tool Support Device |
| 12/26/2013 | US20130341098 Directional Drilling System |
| 12/26/2013 | US20130341097 Cutting Element, Tool and Method of Cutting Within a Borehole |
| 12/26/2013 | US20130341096 Transportable single operator rig apparatus and method for optimizing drilling and/or completion |
| 12/26/2013 | US20130341093 Drilling risk avoidance |
| 12/26/2013 | US20130341091 Drilling Speed and Depth Computation for Downhole Tools |
| 12/26/2013 | US20130341090 Detecting Stick-Slip Using A Gyro While Drilling |
| 12/26/2013 | US20130341059 Top drive sheave method and apparatus |
| 12/26/2013 | US20130340997 Method and system for accessing subterranean deposits from the surface and tools therefor |
| 12/26/2013 | US20130340356 Brace support mast assembly for a transportable rig |
| 12/26/2013 | US20130340355 Mast and guy wire systems for use with long lateral completion systems and method |
| 12/25/2013 | EP2675987A1 Low headroom confined space geoexchange drilling system and method |
| 12/25/2013 | EP2675981A2 High performance wellbore departure and drilling system |
| 12/25/2013 | EP2415881B1 Holding device for a drill rod of a tap hole drilling machine and method for removing a drill rod |
| 12/25/2013 | EP2065553B1 System and method for drilling lateral boreholes |
| 12/25/2013 | CN203362039U Nozzle for particle impact roller bit |
| 12/25/2013 | CN203362038U Broaching drilling tool for sandy gravel stratum directional drilling |
| 12/25/2013 | CN203362037U Pit-drilling hole-drilling device |
| 12/25/2013 | CN203362036U Drilling cone probing machine |
| 12/25/2013 | CN203362035U Air drilling high-and-low pressure conversion manifold device |
| 12/25/2013 | CN103470298A Design method of hole-drilling and hole-forming process scheme for drainage of outburst coal seam |
| 12/25/2013 | CN103470237A Unconventional reverse opposite penetration method and rotary signal navigator |
| 12/25/2013 | CN103470185A Casing-running device and casing-running operation process |
| 12/25/2013 | CN103470184A Double-arm hydraulic tunneling jumbo |
| 12/25/2013 | CN103470183A Method for utilizing propelling beam and support box structure of drilling machine to arrange hydraulic circuit |
| 12/25/2013 | CN103470182A Dual rotating seal of gas and water |
| 12/25/2013 | CN102518397B Tension mooring type underwater drilling system and mounting method for same |
| 12/25/2013 | CN102094578B Drilling mechanism |
| 12/25/2013 | CN102084085B Wellbore system |
| 12/24/2013 | CA2734079C Borehole array for ranging and crosswell telemetry |
| 12/24/2013 | CA2642704C Improved acid tunneling bottom hole assembly and method utilizing reversible knuckle joints |
| 12/19/2013 | WO2013187885A1 Modular rotary steerable actuators, steering tools, and rotary steerable drilling systems with modular actuators |
| 12/19/2013 | WO2013186342A1 Method and system for directional drilling and coupling sub |
| 12/19/2013 | WO2013117208A3 Lubricant supply of a bore for laying a pipeline |
| 12/19/2013 | WO2012152914A9 Device and method for directional drilling |