| 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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| 06/14/2006 | EP1268977B1 Method for estimating the position of a drill |
| 06/14/2006 | CN2787828Y Instrument for measuring horizontal drilling trajectory |
| 06/13/2006 | US7059427 Automatic drilling system |
| 06/08/2006 | US20060120892 Hydraulic system for mining equipment and method of adjusting power of rock drill machine |
| 06/06/2006 | US7055627 Wellbore fluid circulation system and method |
| 06/06/2006 | US7055625 Self-propelled instrumented deep drilling system |
| 06/01/2006 | US20060116823 Method and system for cause-effect time lapse analysis |
| 06/01/2006 | US20060113110 Drilling system and method |
| 05/30/2006 | US7051525 Method and apparatus for monitoring operation of percussion device |
| 05/30/2006 | CA2381324C Continuous wellbore drilling system with stationary sensor measurements |
| 05/24/2006 | CN2782929Y Pressure regulator |
| 05/23/2006 | US7048050 Method and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells |
| 05/23/2006 | CA2350143C Self-controlled directional drilling systems and methods |
| 05/23/2006 | CA2292676C Electrically sequenced tractor |
| 05/18/2006 | US20060102340 Automatic downlink system |
| 05/18/2006 | US20060102201 Coiled tubing wellbore cleanout |
| 05/18/2006 | CA2587483A1 Method and apparatus for jet-fluid abrasive cutting |
| 05/16/2006 | US7044239 System and method for automatic drilling to maintain equivalent circulating density at a preferred value |
| 05/16/2006 | US7044238 Method for improving drilling depth measurements |
| 05/16/2006 | US7044237 Drilling system and method |
| 05/16/2006 | US7044229 Downhole valve device |
| 05/11/2006 | WO2005033907A3 Activity data capture system for a well service vehicle |
| 05/09/2006 | US7043413 Method for modeling an arbitrary well path in a hydrocarbon reservoir using adaptive meshing |
| 05/09/2006 | CA2250185C Method of regulating drilling conditions applied to a well bit |
| 05/09/2006 | CA2170184C Steerable rotary drilling systems |
| 05/04/2006 | WO2006046075A2 Improved plug |
| 05/04/2006 | US20060090893 Plunger Lift Apparatus That Includes One or More Sensors |
| 05/04/2006 | CA2627279A1 Improved plug |
| 05/03/2006 | EP1653044A2 System for communicating information between a rig location and a computer network and methods using the system |
| 05/03/2006 | EP1651390A1 Method of generating stress pulse in tool by means of pressure fluid operated impact device, and impact device |
| 05/02/2006 | US7038454 System and method for detecting an underground object using magnetic field sensing |
| 04/29/2006 | CA2522450A1 System for communicating information between a rig location and a computer network and methods using the system |
| 04/26/2006 | CN2775298Y Radio data transmission system for well site drilling parameter |
| 04/26/2006 | CN2775297Y Intelligent controller for oil field intermittent oil pumping well |
| 04/25/2006 | US7035778 Method of assaying downhole occurrences and conditions |
| 04/25/2006 | US7032689 Method and system for predicting performance of a drilling system of a given formation |
| 04/25/2006 | US7032659 Integrated control system for beam pump systems |
| 04/20/2006 | WO2006041565A1 Measuring weight on bit using coherent radiation |
| 04/20/2006 | US20060081401 Downhole fluid loss control apparatus |
| 04/19/2006 | EP0857249B1 Closed loop drilling system |
| 04/18/2006 | CA2380034C Long reach rotary drilling assembly |
| 04/18/2006 | CA2291600C Actively controlled rotary steerable system and method for drilling wells |
| 04/18/2006 | CA2197260C Electro hydraulic downhole control device |
| 04/18/2006 | CA2187424C Method and apparatus for the remote control and monitoring of production wells |
| 04/13/2006 | WO2006003259A8 Method for controlling percussion device, software product, and percussion device |
| 04/12/2006 | EP1644800A2 Method and apparatus and program storage device including an integrated well planning workflow control system with process dependencies |
| 04/11/2006 | US7027964 Method and system for solving finite element models using multi-phase physics |
| 04/11/2006 | US7027925 Adaptive borehole assembly visualization in a three-dimensional scene |
| 04/06/2006 | WO2005114542A3 Methods for evaluating and improving drilling operations |
| 04/05/2006 | CN1756893A Method and system for cause-effect time lapse analysis |
| 03/30/2006 | WO2006032733A1 Arrangement for controlling percussive rock drilling |
| 03/30/2006 | US20060065440 Method and apparatus for determining drill string movement mode |
| 03/29/2006 | EP1606493A4 Automated control system for back-reaming |
| 03/29/2006 | EP1159506B1 Steerable modular drilling assembly |
| 03/28/2006 | US7020597 Methods for evaluating and improving drilling operations |
| 03/23/2006 | DE19882445B4 Verfahren zum Steuern einer Gesteinsbohrung A method for controlling a rock drilling |
| 03/22/2006 | EP1637695A1 Methods and apparatus for remote monitoring and control. |
| 03/22/2006 | EP1242710B1 Remote lock-out system and method for a horizontal direction drilling system |
| 03/22/2006 | CN1751169A Dynamic annular pressure control apparatus and method |
| 03/22/2006 | CN1749528A Automatic control system of hydraulic follow-up screw pile |
| 03/22/2006 | CN1246568C Method and device for determining drill ole stiffness |
| 03/21/2006 | US7013991 Obstacle detection system for underground operations |
| 03/15/2006 | EP1635032A1 Method and apparatus for controlling surface well equipment |
| 03/15/2006 | CN1748074A Automated control system for back-reaming |
| 03/14/2006 | CA2258783C Method for measurement of the airflow in rock drill bits as well as measurement means for accomplishing said method |
| 03/09/2006 | WO2006024865A1 Method and system for the design of an oil well |
| 03/09/2006 | CA2578760A1 Method and system for the design of an oil well |
| 03/08/2006 | EP1525494A4 Automated rig control management system |
| 03/08/2006 | EP1226334B1 Method and device of controlling a rock drilling machine |
| 03/08/2006 | CN2763502Y Adjustable casing pressure determined gas-releasing oil overflow automatic open/close valve |
| 03/08/2006 | CN1743684A Integrated block type valve-block hydraulic control system for drilling machine |
| 03/08/2006 | CN1743642A Differential balance pressure oil-pumping unit |
| 03/08/2006 | CA2518347A1 Method and apparatus for controlling wellbore equipment |
| 03/02/2006 | US20060047489 Method of modelling the production of an oil reservoir |
| 03/01/2006 | EP1630348A1 Method for modelling the production of an oil-bearing formation |
| 03/01/2006 | EP1141511B1 Method for correcting positioning errors in rock drilling, and a rock drilling equipment |
| 03/01/2006 | CN1740514A Oil extraction state measuring and controlling system |
| 02/28/2006 | US7006951 Method for solving finite element models using time slabbing |
| 02/28/2006 | US7006920 Activity data capture system for a well service vehicle |
| 02/28/2006 | US7004021 Method and system for detecting conditions inside a wellbore |
| 02/28/2006 | CA2515324A1 Method of modelling oil field production |
| 02/23/2006 | US20060037781 Drilling system and method |
| 02/21/2006 | US7003439 Interactive method for real-time displaying, querying and forecasting drilling event and hazard information |
| 02/21/2006 | US7000710 Automatic path generation and correction system |
| 02/21/2006 | US7000700 Measurement-while-drilling assembly using real-time toolface oriented measurements |
| 02/16/2006 | WO2005122313A3 Method and apparatus for performing chemical treatments of exposed geological formations |
| 02/16/2006 | WO2005074456A3 Elevator sensor |
| 02/16/2006 | US20060035591 Methods and apparatus for reducing electromagnetic signal noise |
| 02/09/2006 | DE102005032257A1 Anordnung, Werkzeug und Verfahren zum Messen der Resistivität in einem Bohrloch, Verfahren zum Aufbauen der Anordnung und Verfahren zum Steuern einer Bohrrichtung Assembly tool and method for measuring the resistivity in a borehole method for constructing the arrangement and method for controlling a drilling direction |
| 02/09/2006 | DE10101708B4 Verfahren zum Felsmeißeln A method for rock chisels |
| 02/08/2006 | EP1323114A4 Method of selecting a cutting system |
| 02/08/2006 | EP1090269A4 Determining the shape and orientation of a borehole |
| 02/08/2006 | CN1730896A Strapdown type stable platform apparatus |
| 02/07/2006 | US6994172 Well drilling control system |
| 02/07/2006 | US6994162 Linear displacement measurement method and apparatus |
| 02/02/2006 | US20060021797 Closed loop drilling assenbly with electronics outside a non-rotating sleeve |
| 02/01/2006 | EP1621723A1 System for loading executable code into volatile memory in a downhole tool |
| 01/31/2006 | US6991045 Forming openings in a hydrocarbon containing formation using magnetic tracking |
| 01/31/2006 | CA2354567C Method for correcting positioning errors in rock drilling, and a rock drilling equipment |
| 01/31/2006 | CA2215628C Well control systems employing downhole network |