| 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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| 05/12/2009 | CA2463601C Method and apparatus for monitoring operation of percussion device |
| 05/12/2009 | CA2401734C Wireless reservoir production control |
| 05/07/2009 | WO2009058635A2 An intelligent drilling advisor |
| 05/07/2009 | WO2009039453A3 Directional drilling control |
| 05/07/2009 | WO2009039448A3 Automated directional drilling apparatus and methods |
| 05/07/2009 | US20090114450 Controlled Variable Density Fluid for Wellbore Operations |
| 05/07/2009 | US20090114444 Method and System for Controlling an Excavating Apparatus |
| 05/07/2009 | US20090114403 Method and apparatus for drilling and servicing subterranean wells with rotating coiled tubing |
| 05/07/2009 | CA2703376A1 An intelligent drilling advisor |
| 05/06/2009 | CN101427002A Method of controlling operation of rock drilling rig, and rock drilling rig |
| 05/05/2009 | CA2558107C Method and system for detecting conditions inside a wellbore |
| 04/30/2009 | US20090107723 Pulse rate of penetration enhancement device and method |
| 04/23/2009 | WO2009052304A1 Devices and methods for power control in horizontal directional drilling |
| 04/23/2009 | US20090101410 Ac powered service rig |
| 04/23/2009 | US20090101338 Wellhead flowline protection and testing system with ESP speed controller and emergency isolation valve |
| 04/23/2009 | CA2702583A1 Devices and methods for power control in horizontal directional drilling |
| 04/22/2009 | EP2049768A1 Rock drilling apparatus and method for controlling rock drilling apparatus |
| 04/21/2009 | US7523002 Method and system for cause-effect time lapse analysis |
| 04/16/2009 | US20090095528 Downhole Motor Assembly with Torque Regulation |
| 04/16/2009 | US20090095527 Devices and Methods for Power Control in Horizontal Directional Drilling |
| 04/16/2009 | US20090095526 Method and Apparatus for Managing Rod Changes in Horizontal Directional Drill |
| 04/15/2009 | EP2048322A2 An assembly for cutting into a well tubular |
| 04/15/2009 | CN201221345Y Ground downward signaling system |
| 04/15/2009 | CN101408100A Method and system for controlling rotary tray flexible torque of electric drill |
| 04/14/2009 | CA2387825C Apparatus for manipulating a load |
| 04/11/2009 | CA2639847A1 Systems and methods for guiding the drilling of a horizontal well |
| 04/09/2009 | US20090090555 Automated directional drilling apparatus and methods |
| 04/09/2009 | US20090090554 Closed-loop physical caliper measurements and directional drilling method |
| 04/09/2009 | US20090090553 Command and Control for Boring System |
| 04/08/2009 | CN201218053Y Pressure-discharging drill rig with remote control |
| 03/31/2009 | US7510030 Elongated cross coil assembly for use in borehole location determination |
| 03/31/2009 | US7510026 Method and apparatus for collecting drill bit performance data |
| 03/31/2009 | US7510025 Boring machine |
| 03/26/2009 | WO2009039453A2 Directional drilling control |
| 03/26/2009 | WO2009039448A2 Automated directional drilling apparatus and methods |
| 03/26/2009 | WO2009037381A1 Method and software product for designing drilling pattern for rock cavity excavation |
| 03/26/2009 | US20090078462 Directional Drilling Control |
| 03/26/2009 | CA2698743A1 Automated directional drilling apparatus and methods |
| 03/26/2009 | CA2698692A1 Method and software product for designing drilling pattern for rock cavity excavation |
| 03/25/2009 | CN201212392Y Field bus type automatic control system for roller drill |
| 03/25/2009 | CN201212381Y Automatic stop protection arrangement for pumping unit while pigtail breaking and releasing |
| 03/25/2009 | CN101392529A Bored pile control method, control system and drill using the control system |
| 03/24/2009 | US7506695 Method and apparatus for collecting drill bit performance data |
| 03/19/2009 | US20090071715 Method of controlling operation of rock drilling rig, and rock drilling rig |
| 03/19/2009 | US20090071713 System for Rapidly Boring Through Materials |
| 03/17/2009 | US7503409 Earth drilling rig having electronically controlled air compressor |
| 03/17/2009 | US7503398 Methods and apparatus for actuating a downhole tool |
| 03/11/2009 | CN101382068A Eton brake auto bit feed system |
| 03/11/2009 | CN101382067A PLC control method for hydraulic tongs |
| 03/10/2009 | US7500530 Control system |
| 03/05/2009 | WO2008139413A4 Loading of explosives |
| 03/05/2009 | CA2845206A1 Method and system for controlling a well service rig based on load data |
| 03/05/2009 | CA2697985A1 Devices and methods for dynamic boring procedure reconfiguration |
| 03/05/2009 | CA2639345A1 Method and system for controlling a well service rig based on load data |
| 03/03/2009 | US7497276 Method and apparatus for collecting drill bit performance data |
| 02/26/2009 | WO2008157706A3 System and method for performing oilfield simulation operations |
| 02/24/2009 | CA2351176C Apparatus for measuring downhole drilling efficiency parameters |
| 02/19/2009 | WO2009006526A3 System and method for performing oilfield simulation operations |
| 02/19/2009 | WO2008151293A3 System and method for performing oilfield production operations |
| 02/19/2009 | US20090045814 High temperature downhole tool |
| 02/19/2009 | US20090044981 Method and system for steering a directional drilling system |
| 02/19/2009 | US20090044980 System and method for directional drilling a borehole with a rotary drilling system |
| 02/19/2009 | US20090044979 Drill bit gauge pad control |
| 02/19/2009 | US20090044978 Stochastic bit noise control |
| 02/19/2009 | US20090044977 System and method for controlling a drilling system for drilling a borehole in an earth formation |
| 02/19/2009 | US20090044976 Arrangement and method for controlling drilling parameters |
| 02/18/2009 | CN101371098A Measuring device, rock breaking device and method of measuring stress wave |
| 02/18/2009 | CN100462522C Apparatus and method for pressure-held drilling and grooving of outburst coal bed |
| 02/17/2009 | US7492279 System for managing borehole information |
| 02/12/2009 | US20090038847 User interface for rock drilling rig |
| 02/12/2009 | US20090038392 System and method for correcting errors in depth for measurments made while drilling |
| 02/11/2009 | EP2021580A1 Rock drilling rig and method of controlling thereof |
| 02/11/2009 | CN101363307A Method and apparatus for directional boring under mixed conditions |
| 02/10/2009 | CA2424134C Method for estimating the position of a drill |
| 02/05/2009 | WO2009018462A1 Valuing future information under uncertainty |
| 02/05/2009 | WO2009018450A1 Method for managing production from a hydrocarbon producing reservoir in real-time |
| 02/05/2009 | US20090032305 Control Device |
| 02/05/2009 | US20090032249 Method and system to obtain a compositional model of produced fluids using separator discharge data analysis |
| 02/05/2009 | CA2693486A1 Valuing future information under uncertainty |
| 02/04/2009 | CN101358522A Implementation of jog-opening, adaptive ability and automatic anti-blocking and rotating function of drill |
| 02/04/2009 | CN101358521A Control device of flux distribution for automatic vertical drilling |
| 02/04/2009 | CN101358520A Thrust execution device of automatic vertical drilling |
| 02/03/2009 | CA2525425C Drilling string torsional energy control assembly and method |
| 01/29/2009 | WO2009015031A1 Apparatus, method and system for stochastic workflow in oilfield operations |
| 01/29/2009 | US20090025947 Method, arrangement and valve for controlling rock drilling |
| 01/28/2009 | CN201187290Y Hydraulic synchronous compensating system in oil rig operation |
| 01/28/2009 | CN101353959A Automatic alarm protecting devices of sliding-proof drill and blocked portion |
| 01/27/2009 | CA2541516C Drill string system for performing measurement while drilling and logging while drilling operations |
| 01/27/2009 | CA2494144C Measurement-while-drilling assembly using real-time toolface oriented measurements |
| 01/15/2009 | WO2009007502A1 Method and apparatus for drilling hole into bedrock |
| 01/15/2009 | WO2008127171A8 Method and device for controlling at least one drilling parameter for rock drilling |
| 01/15/2009 | US20090013775 Downhole tool sensor system and method |
| 01/14/2009 | CN101343995A Control device of down-hole horizontal boring machine |
| 01/08/2009 | WO2009006526A2 System and method for performing oilfield simulation operations |
| 01/08/2009 | US20090007651 Pressure interference testing for estimating hydraulic isolation |
| 01/08/2009 | CA2691241A1 System and method for performing oilfield simulation operations |
| 01/07/2009 | EP2010750A1 Method of controlling operation of rock drilling rig, and rock drilling rig |
| 01/07/2009 | CN201176871Y All-hydraulic type rock core boring machine hydraulic control system |
| 01/06/2009 | US7472761 Boring tool tracking fundamentally based on drill string length, pitch and roll |
| 01/06/2009 | CA2512651C Integrated drilling dynamics system and method of operating same |