| Patents for E21B 44 - Automatic control systems specially adapted for drilling operations, i.e. self-operating systems which function to carry out or modify a drilling operation without intervention of a human operator, e.g. computer-controlled drilling systems; Systems specially adapted for monitoring a plurality of drilling variables or conditions (5,356) |
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| 01/23/2013 | CN102383776B Drilling machine and method, controller and system for monitoring clamping and joint of drilling rods of drilling machine |
| 01/23/2013 | CN101824964B Downhole drill of intelligent underground multi-branch horizontal drilling completion system |
| 01/22/2013 | CA2675531C System and method for performing oilfield drilling operations using visualization techniques |
| 01/17/2013 | WO2013007879A1 Method and arrangement for calibrating sensors in drilling equipment |
| 01/17/2013 | WO2012064944A3 Drilling control system and method |
| 01/16/2013 | CN102884487A An apparatus and a control method for controlling the apparatus |
| 01/16/2013 | CN102884281A Method and apparatus to adjust weight-on-bit/torque-on-bit sensor bias |
| 01/16/2013 | CN102884274A Method and apparatus for opening threaded joints of drilling equipment |
| 01/15/2013 | US8353365 Boring tool control using remote locator |
| 01/15/2013 | CA2693486C Valuing future information under uncertainty |
| 01/15/2013 | CA2684426C Method of modifying drilling pattern, rock drilling rig, and software product |
| 01/15/2013 | CA2600602C Annulus pressure control drilling systems and methods |
| 01/15/2013 | CA2502165C Bottom hole assembly |
| 01/10/2013 | WO2012094242A3 Method for a pressure release encoding system for communicating downhole information through a wellbore to a surface location |
| 01/10/2013 | US20130008716 Rock Drilling Rig and Method for Positioning the Same |
| 01/09/2013 | EP2542753A1 System and method for safe well control operations |
| 01/08/2013 | CA2662761C Method for drilling rock |
| 01/08/2013 | CA2561894C Method and system for collaring |
| 01/08/2013 | CA2411819C Communicating with a tool |
| 01/06/2013 | CA2780400A1 Device and method for surveying jet grouting piles in the ground |
| 01/03/2013 | WO2013000094A1 Autodriller system |
| 01/03/2013 | WO2012094164A3 Method and apparatus for multi-drop tool control |
| 01/03/2013 | CA2836830A1 Autodriller system |
| 01/02/2013 | EP2539540A2 System and method for optimizing drilling speed |
| 01/02/2013 | EP2539539A1 Method of presenting positioning information, user interface, and rock drilling rig |
| 01/02/2013 | EP2539530A1 Rock drilling rig, method for rock drilling, and control system of rock drilling rig |
| 01/02/2013 | CN202645532U Hydraulic control system for free-falling hook device of rotary drilling rig |
| 01/02/2013 | CN202645531U Negative flow control hydraulic system of rotary drilling rig and rotary drilling rig |
| 01/02/2013 | CN202645530U Anti-tipping system of rotary drilling rig and rotary drilling rig |
| 01/02/2013 | CN102859116A Air compressor system and method of operation |
| 01/02/2013 | CN102852511A Intelligent drilling control system and method for petroleum drilling machine |
| 01/02/2013 | CN102852510A Auxiliary driller system and drill |
| 01/02/2013 | CN101787876B Rollover protection system of rotary drilling rig |
| 01/01/2013 | US8342262 Boring tool tracking fundamentally based on drill string length, pitch and roll |
| 12/27/2012 | WO2012175115A1 Computer-based method for real-time three-dimensional geological model calculation and reservoir navigation |
| 12/27/2012 | WO2012122483A3 Graph to analyze drilling parameters |
| 12/27/2012 | WO2012094676A3 Apparatus and method for supplying electrical power to an electrocrushing drill |
| 12/27/2012 | WO2012094194A3 Low equivalent circulation density setting tool |
| 12/27/2012 | WO2012092476A3 Method and system for drilling rig testing using virtualized components |
| 12/27/2012 | US20120325555 Robotic tunneling system |
| 12/26/2012 | CN202627965U Track type automatic drill jumbo |
| 12/26/2012 | CN102839962A Overload protective system of drilling machine |
| 12/26/2012 | CN102839961A Calibration device of bit pressure/torque measurement while drilling apparatus in oil drilling and method |
| 12/26/2012 | CN102031929B PLC (Programmable Logic Controller) controlled variable-frequency piling machine |
| 12/26/2012 | CN101694152B Multi-level fine choke manifold and automatic control system |
| 12/25/2012 | US8336642 Drilling system |
| 12/20/2012 | WO2012173725A1 Valving system and method of injecting chemicals |
| 12/20/2012 | WO2012173563A1 Rig control system |
| 12/20/2012 | WO2012172181A1 Method and arrangement for preparing a charging plan |
| 12/20/2012 | WO2012172180A1 Method and arrangement for designing drilling plan |
| 12/20/2012 | CA2838339A1 Control system for downhole operations |
| 12/20/2012 | CA2837905A1 Method and arrangement for preparing a charging plan |
| 12/20/2012 | CA2837902A1 Method and arrangement for designing drilling plan |
| 12/20/2012 | CA2743811A1 Apparatuses for monitoring power tong operation |
| 12/19/2012 | EP2535502A1 Systems and methods for improved positioning of pads |
| 12/19/2012 | CN202611677U Control system of drilling machine and long spiral drilling machine with control system |
| 12/19/2012 | CN202611676U Outlet device of back-pressure pump system for controlled pressure drilling |
| 12/19/2012 | CN102828738A Wired/wireless remote control system device of down-the-hole drill |
| 12/19/2012 | CN102828737A Display mechanism of electronic weight indicator |
| 12/18/2012 | CA2670750C Designing drilling pattern for excavating rock cavern |
| 12/13/2012 | WO2012170122A2 Modular control system for downhole tool |
| 12/13/2012 | US20120316787 Optimization of dynamically changing downhole tool settings |
| 12/06/2012 | WO2012106348A3 Method of minimizing wellbore instability |
| 12/05/2012 | CN202578490U Power head for long spiral drilling machine |
| 12/05/2012 | CN102808606A System and method for automatic control of drilling machine |
| 12/05/2012 | CN101892829B Pressure control method and system for rotary drilling rig |
| 11/29/2012 | WO2012160544A1 Movement control system for a drilling plant |
| 11/29/2012 | US20120298420 Methods For Characterization Of Formations, Navigating Drill Paths, And Placing Wells In Earth Boreholes |
| 11/29/2012 | CA2837350A1 Movement control system for a drilling plant |
| 11/28/2012 | EP2527587A2 Reservoir evaluation system |
| 11/28/2012 | CN102797452A Driller control device, system and method |
| 11/28/2012 | CN102797451A Automatic control system and method for underground annulus pressure of deep water surface layer drilling |
| 11/28/2012 | CN102797450A Guiding force measuring and control device and guiding force calibrating method of rotary guiding drilling system |
| 11/27/2012 | US8316966 Method and system for accessing subterranean deposits from the surface and tools therefor |
| 11/22/2012 | WO2012090175A3 System and method for performing downhole stimulation operations |
| 11/21/2012 | CN202544844U Tester for determining rock drillability and drilling parameter sensitivity |
| 11/21/2012 | CN202544835U Left-right limit control system for mast of rotary drilling rig |
| 11/21/2012 | CN202544834U Dynamic control system of tool surface of underground directional power drilling tool |
| 11/21/2012 | CN202544833U Hydraulic drilling rig |
| 11/21/2012 | CN102791958A Method of presenting positioning information, user interface, and rock drilling rig |
| 11/21/2012 | CN102787837A Process for detecting and controlling verticality of bored pile drill pipe |
| 11/21/2012 | CN102787804A Device and method for drilling by using full-automatic composite material continuous pipe |
| 11/20/2012 | CA2735427C Remote actuation of downhole well tools |
| 11/15/2012 | WO2012087864A3 Method of utilizing subterranean formation data for improving treatment operations |
| 11/15/2012 | WO2012080819A3 Optimized drilling |
| 11/15/2012 | US20120286789 Tracking the positional relationship between a boring tool and one or more buried lines using a composite magnetic signal |
| 11/14/2012 | CN202531136U Automatic measuring-adjusting and monitoring separate injection system for water injection well |
| 11/14/2012 | CN102782241A Rock drilling rig, method for rock drilling, and control system of rock drilling rig |
| 11/14/2012 | CN102777165A Detection and control device for underreaming bits |
| 11/14/2012 | CN102777164A Automation device for well drilling |
| 11/14/2012 | CN101253471B Adaptive user interface for rock drilling rig |
| 11/13/2012 | CA2700258C Directional drilling control |
| 11/08/2012 | WO2012097257A3 Electrically engaged, hydraulically set downhole devices |
| 11/07/2012 | EP2519709A2 Look ahead advance formation evaluation tool |
| 11/07/2012 | CN202520341U Rapid anchor rod supporting platform matched with tunneling machine |
| 11/07/2012 | CN102767358A System and method for monitoring and controlling snubbing slips |
| 11/07/2012 | CN101929310B Active alternating magnetic field information-based method for guiding and positioning well drilling track |
| 11/07/2012 | CN101915061B Alternating magnetic field guiding device |
| 11/06/2012 | US8302677 Coiled tubing injector with a weight on bit circuit |
| 11/05/2012 | CA2739280A1 System and method for monitoring and controlling snubbing slips |