| 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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| 08/19/2009 | CN101509379A Deep water riser buoyance block closed-loop control system |
| 08/18/2009 | CA2571658C Method for controlling percussion device, software product, and percussion device |
| 08/13/2009 | WO2009071520A3 Displaceable device unit for producing a through-hole in floors and back-fills |
| 08/13/2009 | WO2009067373A3 Generating and updating true vertical depth indexed data and log in real time data acquisition |
| 08/11/2009 | US7571778 Method of drilling a bore hole |
| 08/11/2009 | US7571643 Apparatus and method for downhole dynamics measurements |
| 08/11/2009 | CA2509819C Methods and apparatus for reducing electromagnetic signal noise |
| 08/06/2009 | US20090194330 System, program products, and methods for controlling drilling fluid parameters |
| 08/05/2009 | CN201284618Y Hydraulic rig linked system |
| 08/05/2009 | CN101501296A Rock drilling apparatus and method for controlling rock drilling apparatus |
| 08/05/2009 | CN101498213A Downhole wet mixing connection |
| 07/30/2009 | US20090188717 Method and a device for directional control of a rock drilling machine |
| 07/30/2009 | US20090188686 Method for controlling percussion device, software production, and percussion device |
| 07/29/2009 | EP2081737A1 Rock drilling method and rock drilling machine |
| 07/29/2009 | CN201280926Y Overrunning protection arrangement for combining vehicle |
| 07/28/2009 | CA2432119C Drilling system and method |
| 07/23/2009 | WO2009090489A2 Wellbore drilling system |
| 07/16/2009 | WO2009089188A2 Spring-operated anti-stall tool |
| 07/16/2009 | WO2009089187A2 Anti-stall tool for downhole drilling assemblies |
| 07/16/2009 | WO2009088915A2 Tripping indicator for mwd systems |
| 07/16/2009 | WO2009070521A8 Method and apparatus for hydraulic steering of downhole rotary drilling systems |
| 07/16/2009 | WO2009066034A3 Hydrocarbon production plant and process |
| 07/16/2009 | CA2714899A1 Anti-stall tool for downhole drilling assemblies |
| 07/16/2009 | CA2711442A1 Tripping indicator for mwd systems |
| 07/15/2009 | CN101482007A Hydraulic automatic controller used for oil gas well protection |
| 07/15/2009 | CN100513740C Method in situ recovery from a hydrocarbon containing formation using barriers |
| 07/14/2009 | CA2537437C Programming method for controlling a downhole steering tool |
| 07/14/2009 | CA2525382C Method of and system for directional drilling |
| 07/14/2009 | CA2525371C Continuous on-bottom directional drilling method and system |
| 07/14/2009 | CA2382974C Accelerometer caliper while drilling |
| 07/09/2009 | WO2009086094A1 Integrated quill position and toolface orientation display |
| 07/09/2009 | WO2009085732A2 Mechanical actuator with electronic adjustment |
| 07/09/2009 | WO2009085496A1 Method for detecting formation pressure |
| 07/09/2009 | US20090173540 Anti-stall tool for downhole drilling assemblies |
| 07/09/2009 | US20090173539 Spring-operated anti-stall tool |
| 07/09/2009 | US20090173538 Tripping Indicator For MWD Systems |
| 07/09/2009 | CA2706501A1 Mechanical actuator with electronic adjustment |
| 07/09/2009 | CA2702968A1 Integrated quill position and toolface orientation display |
| 07/08/2009 | CN101479441A Intervention tool with operational parameter sensors |
| 07/08/2009 | CN100509301C Method for controlling percussion device, software product, and percussion device |
| 07/07/2009 | US7556105 Closed loop drilling assembly with electronics outside a non-rotating sleeve |
| 07/07/2009 | US7556104 System and method for processing and transmitting information from measurements made while drilling |
| 07/02/2009 | WO2009082453A2 Pulse rate of penetration enhancement device and method |
| 07/02/2009 | WO2009082322A1 A pulse generating device and a rock drilling rig comprising such a device |
| 07/02/2009 | WO2008083230A8 Oilfield analysis system and method |
| 07/02/2009 | US20090166086 Closed-Loop Control of Rotary Steerable Blades |
| 07/02/2009 | US20090166085 Downhole fluid analysis |
| 07/02/2009 | CA2710281A1 Pulse rate of penetration enhancement device and method |
| 07/02/2009 | CA2704173A1 A pulse generating device and a rock drilling rig comprising such a device |
| 07/01/2009 | CN201265405Y Special well workover dragging system |
| 06/25/2009 | WO2009077718A2 Oilfield area network communication system and method |
| 06/25/2009 | WO2009077656A1 Rock drilling rig and method for drilling |
| 06/25/2009 | WO2008078002A9 Designing drilling pattern for excavating rock cavern |
| 06/25/2009 | US20090159281 Running bore-lining tubulars |
| 06/25/2009 | CA2707021A1 Oilfield area network communication system and method |
| 06/23/2009 | CA2541478C Dynamically balanced cutting tool system |
| 06/18/2009 | WO2009075962A2 Methods and systems to estimate wellbore events |
| 06/18/2009 | WO2009058635A3 An intelligent drilling advisor |
| 06/18/2009 | US20090152005 Oilfield well planning and operation |
| 06/18/2009 | CA2703857A1 Methods and systems to estimate wellbore events |
| 06/16/2009 | US7546884 Method and apparatus and program storage device adapted for automatic drill string design based on wellbore geometry and trajectory requirements |
| 06/11/2009 | WO2009073803A1 Method and apparatus for off-rig processing rig sensor data |
| 06/11/2009 | WO2009073008A1 Acoustic steering for borehole placement |
| 06/11/2009 | WO2009071520A2 Displaceable device unit for producing a through-hole in floors and back-fills |
| 06/11/2009 | WO2003040513A3 In situ thermal processing of a hydrocarbon containing formation |
| 06/10/2009 | CN100497881C Injection system for eliminating sucking pressure as coming out of hole |
| 06/10/2009 | CN100497880C Method and device for impact loosening of thread joints |
| 06/04/2009 | WO2009070521A2 Method and apparatus for hydraulic steering of downhole rotary drilling systems |
| 06/04/2009 | WO2009068316A1 System and method for drilling lateral boreholes |
| 06/04/2009 | WO2009029269A3 Devices and methods for dynamic boring procedure reconfiguration |
| 06/04/2009 | CA2706850A1 Method and apparatus for hydraulic steering of downhole rotary drilling systems |
| 06/03/2009 | EP2065553A1 System and method for drilling lateral boreholes |
| 06/03/2009 | EP2064414A1 Method for drilling rock |
| 06/03/2009 | EP2064032A1 Method and device for rock drilling |
| 06/03/2009 | CN101446191A Drilling well control parameter intelligent monitoring system |
| 05/28/2009 | WO2009067373A2 Generating and updating true vertical depth indexed data and log in real time data acquisition |
| 05/28/2009 | WO2009066034A2 Hydrocarbon production plant and process |
| 05/28/2009 | WO2004094768A3 Drill string design methodology for mitigating fatigue failure |
| 05/28/2009 | US20090133931 Method and apparatus for hydraulic steering of downhole rotary drilling systems |
| 05/28/2009 | CA2706309A1 Generating and updating true vertical depth indexed data and log in real time data acquisition |
| 05/28/2009 | CA2699203A1 Hydrocarbon production plant and process |
| 05/27/2009 | CN201246156Y Drill sliding-proof and block automatic alarm protecting devices |
| 05/26/2009 | US7539548 Smart-control PLC based touch screen driven remote control panel for BOP control unit |
| 05/26/2009 | US7537066 Automatic driller |
| 05/26/2009 | CA2551708C Automatic detecton of resonance frequency of a downhole system |
| 05/22/2009 | WO2009064656A2 Borehole survey method and apparatus |
| 05/22/2009 | WO2009062725A2 Methods of drilling with a downhole drilling machine |
| 05/21/2009 | US20090132168 Generating and updating true vertical depth indexed data and log in real time data acquisition |
| 05/21/2009 | US20090126994 Method And System For Controlling Force In A Down-Hole Drilling Operation |
| 05/20/2009 | CN201241688Y Drill-clamping-proof apparatus of hydraulic revolving drill machine |
| 05/20/2009 | CN201241687Y Mining hydraulic drill remote electric control system |
| 05/20/2009 | CN201241686Y Integrated drill control system |
| 05/14/2009 | WO2009062041A2 Automated electrical stability meter |
| 05/14/2009 | WO2009062037A2 A method of training neural network models and using same for drilling wellbores |
| 05/14/2009 | CA2705194A1 A method of training neural network models and using same for drilling wellbores |
| 05/14/2009 | CA2704677A1 Automated electrical stability meter |
| 05/13/2009 | EP2057344A1 A method for reaming in the construction of a well |
| 05/12/2009 | US7530407 Rotary coring device and method for acquiring a sidewall core from an earth formation |
| 05/12/2009 | CA2550798C A method for monitoring the health of a choke used in wellbore operations |
| 05/12/2009 | CA2482912C System and method for interpreting drilling data |