| 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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| 02/15/2007 | US20070035413 System for managing borehole information |
| 02/15/2007 | CA2625012A1 Methods and systems for design and/or selection of drilling equipment based on wellbore drilling simulations |
| 02/15/2007 | CA2625009A1 Methods and systems for designing and/or selecting drilling equipment using predictions of rotary drill bit walk |
| 02/15/2007 | CA2624106A1 Methods and systems for designing and/or selecting drilling equipment with desired drill bit steerability |
| 02/15/2007 | CA2618236A1 Drilling system |
| 02/14/2007 | EP1751396A2 Method and apparatus for performing chemical treatments of exposed geological formations |
| 02/14/2007 | CN2869960Y Automatic control protection system of coal mine emulsified liquid pump station based programable controller |
| 02/14/2007 | CN2869825Y Rotation-disc torque rotation-speed measuring device |
| 02/14/2007 | CN1300444C Method and arrangement of controlling of percussive drilling based on the stress level determined from the measured feed rate |
| 02/13/2007 | US7174974 Electrically sequenced tractor |
| 02/13/2007 | CA2359566C Hydraulic distributor |
| 02/08/2007 | US20070029112 Bidirectional drill string telemetry for measuring and drilling control |
| 02/06/2007 | US7172037 Real-time drilling optimization based on MWD dynamic measurements |
| 02/06/2007 | CA2357921C Method and apparatus for prediction control in drilling dynamics using neural networks |
| 02/06/2007 | CA2223662C Method for determining drilling bit wear |
| 01/31/2007 | CN1297728C Method for controlling a drilling sequence, a rock drilling apparatus |
| 01/25/2007 | WO2007011812A1 Combined nitrogen generation system and well servicing fluid system in one power unit apparatus |
| 01/25/2007 | CA2615633A1 Combined nitrogen generation system and well servicing fluid system in one power unit apparatus |
| 01/23/2007 | US7165632 Boring tool tracking fundamentally based on drill string length, pitch and roll |
| 01/23/2007 | CA2502399C Hydraulic fluid distribution system |
| 01/23/2007 | CA2395771C Method of and system for optimizing rate of penetration based upon control variable correlation |
| 01/18/2007 | WO2006105404A3 Command and control for boring system |
| 01/17/2007 | EP1743086A1 Method and apparatus and program storage device adapted for automatic drill string design based on wellbore geometry and trajectory requirements |
| 01/17/2007 | CN2858946Y Judgment device for determining hollow bar anti-injection and bar broken and pull-off |
| 01/17/2007 | CN2858943Y Differential balance pressure oil pump |
| 01/11/2007 | WO2007003705A1 Arrangement for controlling pressure-fluid-operated drilling equipment |
| 01/11/2007 | WO2005121506A9 Method and system for collaring |
| 01/11/2007 | US20070007040 Method and device for impact loosening of thread joints |
| 01/11/2007 | US20070007039 Arrangement for controlling rock drilling |
| 01/11/2007 | US20070007006 Mixing energy analysis of high-yielding non-newtonian fluids for severe lost circulation prevention |
| 01/10/2007 | CN1891975A Remote controllable and closed-loop control intelligent pumping unit |
| 01/10/2007 | CN1294335C Multi-drilling bit high-speed rotary punching apparatus |
| 01/09/2007 | US7159672 Mapping tool for tracking and/or guiding an underground boring tool |
| 01/09/2007 | US7159654 Apparatus identification systems and methods |
| 01/09/2007 | CA2293746C Method of controlling rock drilling |
| 01/09/2007 | CA2241194C Determination of fluid influx or efflux |
| 01/09/2007 | CA2235134C Closed loop drilling system |
| 01/09/2007 | CA2220115C Device for controlling the weight on an earth drill bit |
| 01/04/2007 | WO2007000488A1 Arrangement for positioning drilling unit |
| 01/04/2007 | CA2512437A1 Method of controlling a well |
| 01/03/2007 | CN2854542Y Hydraulic sensing weight indicator |
| 01/03/2007 | CN2854079Y Oil-water well ground comprehension test instrument |
| 01/03/2007 | CN2854078Y Borehole electric control device of drill jumbo |
| 01/03/2007 | CN1890452A Method and system for controlling power consumption during a rock drilling process and a rock drilling apparatus therefore |
| 01/03/2007 | CN1890451A System and method for damping vibration in a drill string |
| 01/02/2007 | US7158886 Automatic control system and method for bottom hole pressure in the underbalance drilling |
| 01/02/2007 | US7156176 Installation and use of removable heaters in a hydrocarbon containing formation |
| 01/02/2007 | CA2170183C Improvements in or relating to steerable rotary drilling systems |
| 12/27/2006 | EP1735522A2 Multiple distributed pressure measurements |
| 12/27/2006 | EP1735521A1 A component used in the formation, construction, repair and production phase of a well bore and a method for identifying same |
| 12/21/2006 | WO2006135303A1 Method and system for controlling power consumption during rock drilling and rock drilling apparatus incorporating such a system |
| 12/21/2006 | WO2005084246A3 Safemode operating system for a drilling or service rig |
| 12/21/2006 | US20060285436 Intelligent system for use in subterranean drilling applications |
| 12/21/2006 | CA2610441A1 Rock drilling method |
| 12/20/2006 | CN2849503Y Igniter for well drilling liquid-gas separator |
| 12/19/2006 | US7150331 System and method for tracking and communicating with a boring tool |
| 12/19/2006 | CA2215384C Drilling device |
| 12/14/2006 | WO2006133243A1 Method and apparatus for collecting drill bit performance data |
| 12/13/2006 | CN2846750Y Anti-collision device for travel car |
| 12/13/2006 | CN2846749Y Under balance pressure drilling well bore trace controller |
| 12/12/2006 | US7149671 Method and system for coordinate transformation to model radial flow near a singularity |
| 12/12/2006 | CA2281847C Drilling assembly with reduced stick-slip tendency |
| 12/07/2006 | US20060272861 Method for improving drilling depth measurements |
| 12/07/2006 | US20060272859 Method and apparatus for collecting drill bit performance data |
| 12/06/2006 | CN2844438Y Controller of spiral extruding pile |
| 12/06/2006 | CA2549537A1 Intelligent system for use in subterranean drilling applications |
| 12/05/2006 | US7143844 Earth penetrating apparatus and method employing radar imaging and rate sensing |
| 12/05/2006 | US7143843 Traction control for downhole tractor |
| 12/05/2006 | CA2259819C Method and apparatus for mud pulse telemetry in underbalanced drilling systems |
| 11/30/2006 | WO2006126933A1 Method and device |
| 11/30/2006 | WO2006126932A1 Control device |
| 11/30/2006 | US20060266553 Method for improving drilling depth measurements |
| 11/30/2006 | US20060266552 Method for improving drilling depth measurements |
| 11/30/2006 | CA2608756A1 Method and device for controlling an impulse-generating device for drilling in rock |
| 11/30/2006 | CA2608135A1 Control device |
| 11/28/2006 | US7142986 System for optimizing drilling in real time |
| 11/28/2006 | US7140452 Method and apparatus for determining drill string movement mode |
| 11/28/2006 | CA2213713C Downhole tool |
| 11/21/2006 | US7139689 Simulating the dynamic response of a drilling tool assembly and its application to drilling tool assembly design optimization and drilling performance optimization |
| 11/21/2006 | US7138925 Microprocessor integrated multifunction hoist system controller |
| 11/21/2006 | CA2209059C Method and system for real-time estimation of at least one parameter related to the performance of a drill bit |
| 11/16/2006 | WO2006120257A1 Method for the treatment of the obstructed zones of the parent rock of hydrocarbon-producing strata adjacent to a gas and oil well drilling zone in order to increase productivity |
| 11/15/2006 | EP1470316B1 Method for controlling a drilling sequence, a rock drilling apparatus and a computer programme to form a drilling sequence |
| 11/15/2006 | CN2837508Y Protector for drilling and repairing well |
| 11/15/2006 | CN1284920C Intelligent drilling monitoring system for oil field |
| 11/14/2006 | US7136795 Control method for use with a steerable drilling system |
| 11/14/2006 | US7134512 Method of downhole drilling and apparatus therefor |
| 11/14/2006 | US7134511 Soil working method and device |
| 11/14/2006 | CA2209056C Method and system for real-time estimation of at least one parameter related to the displacement of a drill bit |
| 11/08/2006 | CN2835553Y Automatic braking device of hydraulic rotary table for oilfield |
| 11/08/2006 | CN1283895C Method and apparatus for locating indexing systems in cased well and conducting multilateral branch operations |
| 11/07/2006 | CA2394071C Virtual sensors to provide expanded downhole instrumentation for electrical submersible pumps (esps) |
| 11/02/2006 | US20060244454 System and method for detecting an underground object using magnetic field sensing |
| 11/02/2006 | US20060243489 System and method for damping vibration in a drill string |
| 11/02/2006 | EP1716313A1 A method for monitoring the health of a choke used in wellbore operations |
| 11/01/2006 | CN1854460A Oil-well realtime monitoring system and its controlling method |
| 11/01/2006 | CN1282818C Drill bit advancing direction predicting method, controlling method and controlling system for horizontal well |
| 10/31/2006 | US7128167 System and method for rig state detection |
| 10/31/2006 | US7128153 Treatment of a hydrocarbon containing formation after heating |
| 10/25/2006 | EP1446554B1 Method of rock drilling |