| 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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| 10/24/2006 | US7124578 Monitoring valve, rock drilling apparatus and a method for controlling at least two hydraulic actuators to such a monitoring valve and rock drilling apparatus |
| 10/19/2006 | WO2006108918A1 Method, arrangement and valve for controlling rock drilling |
| 10/19/2006 | US20060231291 Method and device for drilling into tubulars located within one another |
| 10/18/2006 | EP1556579B1 Automated method and system for recognizing well control events |
| 10/18/2006 | CN2828311Y Anti-impact alarm device for underground workover rig |
| 10/18/2006 | CN1849437A Method and device for impact loosening of thread joints |
| 10/17/2006 | CA2250030C Method of assaying downhole occurrences and conditions |
| 10/12/2006 | US20060225921 Mapping tool for tracking and/or guiding an underground boring tool |
| 10/11/2006 | CN2825943Y Monitoring device for operating state of beam-pumping unit |
| 10/10/2006 | CA2385385C Method for fast and extensive formation evaluation |
| 10/05/2006 | WO2006105404A2 Command and control for boring system |
| 10/05/2006 | CA2600873A1 Command and control for boring system |
| 10/04/2006 | EP1194652B1 Auger piling |
| 10/04/2006 | CN2823552Y Beam type sensor signal output stabilizer |
| 10/04/2006 | CN1840854A Apparatus and method for pressure-held drilling and grooving of outburst coal bed |
| 10/04/2006 | CN1278011C Method, system and device for controlling drilling tools an horizontal drilling machine |
| 10/03/2006 | US7114579 System and method for interpreting drilling date |
| 10/03/2006 | US7114578 Method and apparatus for determining drill string movement mode |
| 10/03/2006 | US7114577 Safemode operating system for a drilling or service rig |
| 10/03/2006 | US7114576 Method and arrangement of controlling of percussive drilling based on the stress level determined from the measured feed rate |
| 10/03/2006 | US7114566 Heat treatment using natural distributed combustor; oxidation of hydrocarbons to generate heat; pyrolysis |
| 10/03/2006 | US7114565 Measurement-while-drilling assembly using real-time toolface oriented measurements |
| 10/03/2006 | CA2326489C Drillstring with stabilisers for re-entering a primary wellbore |
| 09/28/2006 | US20060214663 Tracking the positional relationship between a boring tool and one or more buried lines using a composite magnetic signal |
| 09/21/2006 | WO2005086565A3 Leadless sub assembly for downhole detection system |
| 09/21/2006 | US20060207795 Method of dynamically controlling open hole pressure in a wellbore using wellhead pressure control |
| 09/19/2006 | CA2271809C Method and arrangement for controlling feed in rock drilling |
| 09/19/2006 | CA2270948C Drilling device |
| 09/13/2006 | EP1699999A1 Method and system for controlling power consumption during a rock drilling process and a rock drilling apparatus therefore |
| 09/13/2006 | EP1451444B1 Method and equipment for controlling operation of rock drilling apparatus |
| 09/07/2006 | US20060196696 Electrically sequenced tractor |
| 09/07/2006 | US20060196694 Electrically sequenced tractor |
| 09/06/2006 | EP1698961A1 Remote power management method and system in a downhole network |
| 09/06/2006 | EP1697615A1 A method for setting down a bit in the construction of a well |
| 09/06/2006 | CN1273720C System and method for compensating floating ship vertical motion |
| 09/06/2006 | CN1273719C Drilling device |
| 09/05/2006 | US7100994 injecting a heated fluid into the well bore, producing a second fluid from the formation, conducting an in situ conversion process in the selected section. |
| 09/05/2006 | US7100708 Autodriller bit protection system and method |
| 08/31/2006 | WO2006089367A1 A method and system for controlling an excavating apparatus |
| 08/31/2006 | CA2599429A1 A method and system for controlling an excavating apparatus |
| 08/30/2006 | EP1694940A2 Elevator sensor |
| 08/29/2006 | US7096979 Continuous on-bottom directional drilling method and system |
| 08/29/2006 | US7096976 Drilling formation tester, apparatus and methods of testing and monitoring status of tester |
| 08/24/2006 | WO2006087239A1 Device for monitoring a drilling or coring operation and installation comprising such a device |
| 08/24/2006 | US20060185900 Programming method for controlling a downhole steering tool |
| 08/24/2006 | US20060185899 Underground drilling device employing down-hole radar |
| 08/24/2006 | US20060185864 Method of generating stress pulse in tool by means of pressure fluid operated impact device, and impact device |
| 08/24/2006 | CA2596410A1 Device for monitoring a drilling or coring operation and installation comprising such a device |
| 08/23/2006 | EP1693549A1 Method and apparatus for measuring stick slip while drilling |
| 08/23/2006 | CN2809613Y Weight indicating and force measuring device for drilling equipment |
| 08/22/2006 | US7093674 Drilling formation tester, apparatus and methods of testing and monitoring status of tester |
| 08/22/2006 | CA2366002C Three-dimensional steering tool for controlled downhole extended-reach directional drilling |
| 08/16/2006 | CN1819897A Method of generating stress pulse in tool by means of pressure fluid operated impact device, and impact device |
| 08/16/2006 | CN1270052C Method for obtaining survey of leakage and structum integrity by finite downhole pressure test |
| 08/15/2006 | CA2268444C Apparatus and method for drilling boreholes |
| 08/15/2006 | CA2181658C Anchor torque controller for anchor installing machines |
| 08/09/2006 | EP1488073B1 Dynamic annular pressure control apparatus and method |
| 08/08/2006 | US7086486 Flow control valve and method of controlling rotation in a downhole tool |
| 08/08/2006 | US7086483 Electric tool |
| 08/08/2006 | US7086465 In situ production of a blending agent from a hydrocarbon containing formation |
| 08/08/2006 | US7086461 Combined grip control of elevator and spider slips |
| 08/08/2006 | CA2418708C Rotary control of rotary steerables using servo-accelerometers |
| 08/02/2006 | EP1588021B1 A method and device for drilling into tubulars located within one another |
| 08/02/2006 | CN1811623A Intelligent controlling system for beam-pumping unit |
| 08/01/2006 | US7085696 Iterative drilling simulation process for enhanced economic decision making |
| 08/01/2006 | US7082821 Method and apparatus for detecting torsional vibration with a downhole pressure sensor |
| 07/27/2006 | WO2006078198A1 Method and system for monitoring and documenting the installation of rock reinforcement bolt |
| 07/27/2006 | CA2591348A1 Method and system for monitoring and documenting the installation of rock reinforcement bolt |
| 07/26/2006 | EP1402145B1 Closed loop drilling assembly with electronics outside a non-rotating sleeve |
| 07/26/2006 | CN1266367C Remote lock-out system and method for horizontal direction drilling system |
| 07/25/2006 | US7080701 Electrically sequenced tractor |
| 07/25/2006 | US7080698 Mapping tool for tracking and/or guiding an underground boring tool |
| 07/19/2006 | EP1595057B1 Dynamic annular pressure control apparatus and method |
| 07/19/2006 | CN1804369A Double autocontrol device capable of preventing crown block from being broken and preventing drill pipe sticking for petroleum well drilling |
| 07/18/2006 | US7077198 In situ recovery from a hydrocarbon containing formation using barriers |
| 07/18/2006 | CA2412385C A graphical method for designing the trajectory of a well bore |
| 07/18/2006 | CA2365310C Wellbore primary barrier and related systems |
| 07/13/2006 | US20060151212 Traction control for downhole tractor |
| 07/11/2006 | CA2252944C Closed loop fluid-handling system for use during drilling of wellbores |
| 07/11/2006 | CA2165017C Drilling system with downhole apparatus for transforming multiple dowhole sensor measurements into parameters of interest and for causing the drilling direction to change in response thereto |
| 07/06/2006 | WO2006053248A3 Method and apparatus for jet-fluid abrasive cutting |
| 07/06/2006 | WO2006046075A3 Improved plug |
| 07/06/2006 | US20060149518 Method for evaluating and improving drilling operations |
| 07/06/2006 | US20060149477 Measurement-while-drilling assembly using real-time toolface oriented measurements |
| 07/05/2006 | CN2793315Y Crank handle pin fallen monitor of pumping unit |
| 07/05/2006 | CN1798903A Drilling string torsional energy control assembly and method |
| 07/04/2006 | US7071695 Tracking the positional relationship between a boring tool and one or more buried lines using a composite magnetic signal |
| 06/28/2006 | EP1274922B1 Method of and system for optimizing rate of penetration based upon control variable correlation |
| 06/28/2006 | EP1135577B1 Method of and system for monitoring drilling parameters |
| 06/28/2006 | CN2792060Y Petroleum system emergency long-distance monitoring commanding system |
| 06/28/2006 | CN2791245Y Well-drilling underground mechanical parameter logging instrument while drilling |
| 06/27/2006 | US7066280 Method and apparatus for monitoring and recording of the operating condition of a downhole drill bit during drilling operations |
| 06/27/2006 | US7066257 In situ recovery from lean and rich zones in a hydrocarbon containing formation |
| 06/27/2006 | US7066255 Protection against loss of downhole tools |
| 06/21/2006 | EP1671011A1 Method and device for impact loosening of thread joints |
| 06/20/2006 | US7063174 Method for reservoir navigation using formation pressure testing measurement while drilling |
| 06/20/2006 | US7063145 Methods and systems for heating a hydrocarbon containing formation in situ with an opening contacting the earth's surface at two locations |
| 06/20/2006 | US7062959 Method and apparatus for determining downhole pressures during a drilling operation |
| 06/15/2006 | WO2006062460A1 Arrangement and method for controlling drilling parameters |
| 06/15/2006 | CA2583169A1 Arrangement and method for controlling drilling parameters |