| 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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| 08/19/2008 | US7413032 Self-controlled directional drilling systems and methods |
| 08/19/2008 | US7413031 Apparatus and method for maintaining control of a drilling machine |
| 08/19/2008 | CA2550936C A method for setting down a bit in the construction of a well |
| 08/13/2008 | EP1399298B1 Method for controlling operating cycle of impact device, and impact device |
| 08/12/2008 | US7409987 Disconnection device for a wireline |
| 08/07/2008 | WO2008094944A1 System and method for performing oilfield drilling operations using visualization techniques |
| 08/07/2008 | WO2008094070A1 Bottom-hole condition recorder |
| 08/07/2008 | WO2008093054A2 Systems and methods for monitoring sensor and actuator health and performance |
| 08/07/2008 | US20080185185 Automatic Control System For Connecting A Dual-Member Pipe |
| 08/07/2008 | CA2793811A1 System and method for performing oilfield drilling operations using visualization techniques |
| 08/07/2008 | CA2675531A1 System and method for performing oilfield drilling operations using visualization techniques |
| 08/06/2008 | CN101235713A Jam-proof hydraulic device for drill |
| 07/31/2008 | US20080179092 High density slurry |
| 07/31/2008 | DE112006002135T5 Verfahren und Systeme zum Konstruieren und/oder Auswählen von Bohrausrüstung basierend auf Bohrlochbohrsimulationen Methods and systems for designing and / or selecting of drilling equipment based on Bohrlochbohrsimulationen |
| 07/30/2008 | CN101230779A Method for safely using electric control gear of rotary drilling machine |
| 07/29/2008 | CA2463603C Method and arrangement of controlling of percussive drilling based on the stress level determined from the measured feed rate |
| 07/29/2008 | CA2389218C Method and device of controlling a rock drilling machine |
| 07/29/2008 | CA2324233C Method and system for optimizing penetration rate |
| 07/24/2008 | WO2008089345A1 Method of performing integrated oilfield operations |
| 07/24/2008 | US20080175099 Fluid characterization from acoustic logging data |
| 07/24/2008 | CA2674601A1 Method of performing integrated oilfield operations |
| 07/23/2008 | CN201090205Y Centralized monitoring baffling and kill-job device |
| 07/22/2008 | US7403014 Tracking the positional relationship between a boring tool and one or more buried lines using a composite magnetic signal |
| 07/17/2008 | WO2008085946A2 Drilling components and systems to dynamically control drilling dysfunctions and methods of drilling a well with same |
| 07/16/2008 | CN101223335A Method and apparatus for collecting drill bit performance data |
| 07/10/2008 | WO2008083343A1 Oilfield management system and method |
| 07/10/2008 | WO2008083230A1 Oilfield analysis system and method |
| 07/10/2008 | WO2008083009A1 Bayesian production analysis technique for multistage fracture wells |
| 07/10/2008 | US20080164062 Drilling components and systems to dynamically control drilling dysfunctions and methods of drilling a well with same |
| 07/10/2008 | CA2674580A1 Oilfield analysis system and method |
| 07/09/2008 | CN201083124Y Mine roller drill high protection type alternating current digitization transmission system |
| 07/09/2008 | CN100401106C Adaptive borehole assembly visualization in a three-dimensional scene |
| 07/09/2008 | CN100400793C Methods and systems for heating a hydrocarbon containing formation in situ with an opening contacting the earth's surface at two locations |
| 07/09/2008 | CN100400241C Method of generating stress pulse in tool by means of pressure fluid operated impact device, and impact device |
| 07/03/2008 | WO2008078002A1 Designing drilling pattern for excavating rock cavern |
| 07/03/2008 | WO2008078001A1 Designing drilling pattern for excavating rock cavern |
| 07/03/2008 | US20080156531 Automated mse-based drilling apparatus and methods |
| 07/03/2008 | CA2670078A1 Designing drilling pattern for excavating rock cavern |
| 07/02/2008 | CN101213350A Arrangement for controlling pressure-fluid-operated drilling equipment |
| 07/02/2008 | CN101210488A Tamping-proof monitoring device for drilling platform turntable surface of drilling machine used for petroleum exploration |
| 07/01/2008 | US7392858 Remote control for a drilling machine |
| 06/26/2008 | US20080149391 Linear motor to pre-bias shuttle force |
| 06/26/2008 | US20080149344 Method of using charged chamber pressure transmitter for subsurface safety valves |
| 06/26/2008 | DE112006002137T5 Verfahren und Systeme zum Konstruieren und/oder Auswählen von Bohrausrüstung mit einer gewünschten Bohrmeißellenkbarkeit Methods and systems for designing and / or selecting of drilling equipment with a desired Bohrmeißellenkbarkeit |
| 06/26/2008 | DE112006002134T5 Verfahren und Systeme zum Konstruieren und/oder Auswählen von Bohrausrüstung unter Verwendung von Vorhersagen des Ganges des Drehbohrmeißels Methods and systems for constructing and / or selecting drilling equipment using predictions of the response of the drill bit |
| 06/26/2008 | CA2841491A1 System, program product, and method for drilling rig activity accounting and visualization |
| 06/26/2008 | CA2841478A1 System, program product, and method for drilling rig activity accounting and visualization |
| 06/25/2008 | CN101208494A Arrangement for positioning drilling unit |
| 06/25/2008 | CN101207352A Control method and control device of power supply soft launch for intermittent power supply by balance beam type pumping unit |
| 06/19/2008 | WO2008055186A3 System and method for performing oilfield simulation operations |
| 06/19/2008 | US20080142263 Downhole Valve Mechanism |
| 06/18/2008 | EP1931858A1 Methods and systems for design and/or selection of drilling equipment based on wellbore drilling simulations |
| 06/18/2008 | EP1931854A1 Methods and systems for designing and/or selecting drilling equipment using predictions of rotary drill bit walk |
| 06/18/2008 | EP1792051A4 Arrangement for controlling percussive rock drilling |
| 06/17/2008 | CA2482931C Method for improving drilling depth measurements |
| 06/17/2008 | CA2482922C Method and apparatus for determining drill string movement mode |
| 06/17/2008 | CA2343738C Method of determining drill string stiffness |
| 06/12/2008 | WO2008070864A1 A method for performing oilfield production operations |
| 06/12/2008 | WO2008070829A2 Automated mse-based drilling apparatus and methods |
| 06/12/2008 | US20080135292 Apparatus for eliiminating net drill bit torque and controlling drill bit walk |
| 06/12/2008 | US20080135290 Multiple input scaling autodriller |
| 06/12/2008 | US20080135235 Downhole well valve having integrated sensors |
| 06/12/2008 | CA2671367A1 A method for performing oilfield production operations |
| 06/11/2008 | EP1929117A1 Methods and systems for designing and/or selecting drilling equipment with desired drill bit steerability |
| 06/11/2008 | CN201071712Y Digital synthetic automatic bit feeding system |
| 06/11/2008 | CN101196110A Method for monitoring lifting and lowering drill process at artesian well locale and automatic grouting control |
| 06/04/2008 | CN100392207C Method for predicting drilling system performance for given formation and its system |
| 06/03/2008 | US7380616 Automatic downlink system |
| 06/03/2008 | CA2396291C Method of drilling a bore hole |
| 06/03/2008 | CA2271848C Arrangement for supporting rock drilling apparatus |
| 05/29/2008 | US20080125981 Drill bit performance analysis tool |
| 05/29/2008 | US20080121430 Configurable Beacon And Method |
| 05/27/2008 | US7377339 System and method for damping vibration in a drill string |
| 05/27/2008 | US7377283 Coiled tubing wellbore cleanout |
| 05/27/2008 | US7377169 Apparatus and methods for acoustically determining fluid properties while sampling |
| 05/22/2008 | WO2008060216A1 Rock drilling method and rock drilling machine |
| 05/22/2008 | CA2669947A1 Rock drilling method and rock drilling machine |
| 05/21/2008 | EP1466075B1 Remote control of drilling rigs |
| 05/21/2008 | CN101182755A Down-hole horizontal boring machine distribution control method and device thereof |
| 05/20/2008 | US7373970 Pin connector with seal assembly |
| 05/20/2008 | CA2473317C Method for reservoir navigation using formation pressure testing measurement while drilling |
| 05/17/2008 | CA2747864A1 Top drive interlock |
| 05/15/2008 | US20080110674 Closed-loop control of hydraulic pressure in a downhole steering tool |
| 05/14/2008 | EP1920319A1 Adaptive user interface for rock drilling rig |
| 05/14/2008 | EP1920134A1 User interface for rock drilling rig |
| 05/14/2008 | CN201059187Y Pressure-control drilling device based on double gradient |
| 05/14/2008 | CN201059186Y Oil-well rig hunting upper-bumping lower-breaking preventing system |
| 05/14/2008 | CN201059185Y Automatic vertical drilling well flow distribution control device |
| 05/14/2008 | CN201059184Y Automatic vertical drilling well thrust actuating unit |
| 05/14/2008 | CN101180451A Control device |
| 05/14/2008 | CN101180450A Method and device |
| 05/14/2008 | CN100387802C Hydraulic rock drill |
| 05/13/2008 | CA2534222C System for optimizing drilling in real time |
| 05/13/2008 | CA2511678C Automated control system for back-reaming |
| 05/13/2008 | CA2481539C Automatic downlink system |
| 05/08/2008 | WO2008055186A2 System and method for performing oilfield simulation operations |
| 05/06/2008 | US7367411 Drilling system and method |
| 04/29/2008 | US7363988 System and method for processing and transmitting information from measurements made while drilling |
| 04/24/2008 | WO2008029000A8 Method for drilling rock |
| 04/24/2008 | CA2666610A1 Mux bop database mirroring |