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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09/02/2003 | US6612547 Downhole flow control devices |
09/02/2003 | US6612382 Iterative drilling simulation process for enhanced economic decision making |
08/28/2003 | WO2003071097A1 Acoustic position measurement system for well bore formation |
08/28/2003 | WO2003071096A1 Method and arrangement for controlling percussion rock drilling |
08/28/2003 | WO2003071091A1 Dynamic annular pressure control apparatus and method |
08/28/2003 | WO2003035811A8 Remediation of a hydrocarbon containing formation |
08/28/2003 | CA2474665A1 Acoustic position measurement system for well bore formation |
08/27/2003 | EP1068425B1 Drillstring with stabilisers for re-entering a primary wellbore |
08/21/2003 | WO2003036043A3 Forming openings in a hydrocarbon containing formation using magnetic tracking |
08/20/2003 | CN1437331A Remote radio oil field monitoring system |
08/19/2003 | US6609067 Real-time method for maintaining formation stability and monitoring fluid-formation interaction |
08/19/2003 | US6607607 Coiled tubing wellbore cleanout |
08/19/2003 | US6607044 Three dimensional steerable system and method for steering bit to drill borehole |
08/13/2003 | EP1335108A2 Apparatus and method for determining a drilling mode to optimize formation evaluation measurements |
08/13/2003 | EP1009911B1 Arrangement for supporting rock drilling apparatus |
08/13/2003 | CN1117918C Apparatus and method for determining drilling mode to optimize formation evaluation measurements |
08/07/2003 | WO2003064812A1 Apparatus and method for improved development of oil and gas wells |
08/07/2003 | US20030146022 Self-controlled directional drilling systems and methods |
08/06/2003 | EP1332272A1 Combined grip control of elevator and spider slips |
08/06/2003 | CN2564751Y Drilling parameter apparatus |
08/05/2003 | US6601658 Control method for use with a steerable drilling system |
07/31/2003 | WO2003062598A1 System and method for autonomously performing a downhole well operation |
07/31/2003 | US20030141078 System and method for autonomously performing a downhole well operation |
07/31/2003 | US20030141055 Drilling formation tester, apparatus and methods of testing and monitoring status of tester |
07/30/2003 | CN1433498A Remote lock-out system and method for horizontal direction drilling system |
07/29/2003 | US6598687 Three dimensional steerable system |
07/24/2003 | WO2002057589A3 Internal power source for downhole detection system |
07/24/2003 | US20030137899 Method for estimating the position of a drill |
07/22/2003 | US6594881 Bit torque limiting device |
07/17/2003 | WO2003058030A1 Data transmission system |
07/17/2003 | WO2003058029A1 Remote control of drilling rigs |
07/17/2003 | WO2003036040A3 In situ thermal processing of a hydrocarbon containing formation using a natural distributed combustor |
07/17/2003 | US20030132006 Method and system for controlling a downhole flow control device using derived feedback control |
07/10/2003 | WO2003036032A3 In situ thermal processing of a hydrocarbon containing formation to produce heated fluids |
07/09/2003 | CN1429308A Directional drilling machine and method of directional drilling |
07/03/2003 | WO2003036035A3 In situ upgrading of coal |
07/03/2003 | WO2003036031A3 Seismic monitoring of in situ conversion in a hydrocarbon containing formation |
07/03/2003 | WO2003035811A9 Remediation of a hydrocarbon containing formation |
07/03/2003 | US20030121703 Electrically sequenced tractor |
07/02/2003 | EP1323114A1 Method of selecting a cutting system |
06/26/2003 | US20030120427 Graphical method for designing the trajectory of a well bore |
06/19/2003 | WO2003050388A1 Method and equipment for controlling operation of rock drilling apparatus |
06/19/2003 | WO2003050382A1 Feeding beam and hydraulic element |
06/19/2003 | US20030111268 Underground boring machine employing navigation sensor and adjustable steering |
06/19/2003 | US20030111265 Method of regulating the feed force of a drilling device |
06/18/2003 | EP1319297A2 Methods and apparatus for interactive communications |
06/18/2003 | CN2556352Y Full-automatic hydraulic drilling machine truck for oil and geological prospecting |
06/12/2003 | WO2003048524A1 Method for controlling a drilling sequence, a rock drilling apparatus and a computer programme to form a drilling sequence |
06/12/2003 | US20030106684 Remote sensor for determining proper placement of elvators slips |
06/10/2003 | US6577954 Automated bore planning method and apparatus for horizontal directional drilling |
06/04/2003 | EP1316670A2 Apparatus for static earth boring |
06/03/2003 | US6574652 Intrinsically safe communication and control system for use in hazardous locations including monotoring device with intrinsically safe fluorescent tube backlit |
06/03/2003 | US6574527 Method of selecting a cutting system |
06/03/2003 | US6571886 Method and apparatus for monitoring and recording of the operating condition of a downhole drill bit during drilling operations |
05/30/2003 | WO2003044319A1 Method of rock drilling |
05/28/2003 | CN1420958A Improved method for drilling of oil wells |
05/27/2003 | US6568487 Method for fast and extensive formation evaluation using minimum system volume |
05/27/2003 | US6568485 Stalled motor by-pass valve |
05/22/2003 | US20030094310 Three dimensional steerable system and method for steering bit to drill borehole |
05/15/2003 | WO2003040513A2 In situ thermal processing of a hydrocarbon containing formation |
05/08/2003 | WO2003038236A1 Method and system for controlling a downhole flow control device using derived feedback control |
05/01/2003 | WO2003036043A2 Forming openings in a hydrocarbon containing formation using magnetic tracking |
05/01/2003 | WO2003036041A2 In situ recovery from a hydrocarbon containing formation using barriers |
05/01/2003 | WO2003036040A2 In situ thermal processing of a hydrocarbon containing formation using a natural distributed combustor |
05/01/2003 | WO2003036039A1 In situ production of a blending agent from a hydrocarbon containing formation |
05/01/2003 | WO2003036038A2 In situ thermal processing of a hydrocarbon containing formation via backproducing through a heater well |
05/01/2003 | WO2003036037A2 Installation and use of removable heaters in a hydrocarbon containing formation |
05/01/2003 | WO2003036036A1 In situ recovery from lean and rich zones in a hydrocarbon containing formation |
05/01/2003 | WO2003036035A2 In situ upgrading of coal |
05/01/2003 | WO2003036034A1 Coductor-in-conduit heat sources with an electrically conductive material in the overburden |
05/01/2003 | WO2003036033A1 Simulation of in situ recovery from a hydrocarbon containing formation |
05/01/2003 | WO2003036032A2 In situ thermal processing of a hydrocarbon containing formation to produce heated fluids |
05/01/2003 | WO2003036031A2 Seismic monitoring of in situ conversion in a hydrocarbon containing formation |
05/01/2003 | WO2003036030A2 In situ thermal processing and upgrading of produced hydrocarbons |
05/01/2003 | WO2003036024A2 Method and system for in situ heating a hydrocarbon containing formation by a u-shaped opening |
05/01/2003 | WO2003035811A1 Remediation of a hydrocarbon containing formation |
05/01/2003 | WO2003035801A2 Producing hydrocarbons and non-hydrocarbon containing materials from a hydrocarbon containing formation |
05/01/2003 | WO2002038914A9 System and method for signalling downhole conditions to surface |
05/01/2003 | WO2002038909A9 Mean strain ratio analysis method and system for detecting drill bit failure and signaling surface operator |
05/01/2003 | US20030082929 Data transfer system |
05/01/2003 | US20030079912 Drilling system and method |
05/01/2003 | CA2463423A1 Upgrading and mining of coal |
05/01/2003 | CA2463109A1 In situ thermal processing of a hydrocarbon containing formation using a natural distributed combustor |
05/01/2003 | CA2462971A1 Installation and use of removable heaters in a hydrocarbon containing formation |
04/29/2003 | US6554082 Apparatus and method for controlling an underground boring machine |
04/29/2003 | US6553825 Torque swivel and method of using same |
04/24/2003 | WO2003033874A1 Rock drilling apparatus and rock breaking machine |
04/24/2003 | WO2003033873A1 Method and arrangement of controlling of percussive drilling based on the stress level determined from the measured feed rate |
04/24/2003 | WO2003033216A1 Method and apparatus for monitoring operation of percussion device |
04/23/2003 | CN1413285A Three dimensional steerable system |
04/17/2003 | WO2002038916A9 An apparatus and method for determining downhole bit failure |
04/16/2003 | EP1301812A2 Method and system for modeling geological structures using an unstructured four-dimensional mesh |
04/16/2003 | EP1301688A1 Method for fast and extensive formation evaluation |
04/15/2003 | US6547016 Apparatus for measuring weight and torque on drill bit operating in a well |
04/15/2003 | CA2099248C Method of drilling a hole in a rock |
04/09/2003 | EP1299752A2 Feature modeling in a finite element model |
04/09/2003 | EP1299751A2 Method for modeling an arbitrary well path in a hydrocarbon reservoir using adaptive meshing |
04/09/2003 | EP1299750A2 Method and system for solving finite element models using multi-phase physics |
04/09/2003 | EP1299749A2 Method and system for coordinate transformation to model radial flow near a singularity |
04/09/2003 | EP0828914B1 Adjustable stabilizer for directional drilling |