| 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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| 09/06/2005 | US6941255 Feature modeling in a finite element model |
| 09/06/2005 | US6938708 Electrically sequenced tractor |
| 09/06/2005 | US6938702 Method and equipment for controlling operation of rock drilling apparatus |
| 09/01/2005 | WO2005080744A1 A method for monitoring the health of a choke used in wellbore operations |
| 09/01/2005 | US20050192855 System for evaluating over and underbalanced drilling operations |
| 09/01/2005 | US20050189142 Wellbore drilling system and method |
| 08/31/2005 | CN2721875Y Beam sensor |
| 08/31/2005 | CN2721874Y Electronic driller device |
| 08/30/2005 | US6935439 Boring tool control using remote locator |
| 08/24/2005 | CN2720109Y Well-drilling multi-stage flow-throttling device for high-pressure oil-gas well |
| 08/23/2005 | US6932155 In situ thermal processing of a hydrocarbon containing formation via backproducing through a heater well |
| 08/18/2005 | WO2005074456A2 Elevator sensor |
| 08/17/2005 | CN2718222Y Remote-control lifting and stopping apparatus for artificially lifted well |
| 08/16/2005 | US6929075 Automated bore planning system for horizontal directional drilling |
| 08/11/2005 | US20050173157 Flow control valve |
| 08/11/2005 | US20050173153 Earth penetrating apparatus and method employing radar imaging and rate sensing |
| 08/10/2005 | EP1114240B1 Method of determining drill string stiffness |
| 08/03/2005 | EP1558836A1 Arrangement for controlling rock drilling |
| 08/03/2005 | EP1558835A1 Monitoring valve, rock drilling apparatus and a method for controlling at least two hydraulic actuators to such a monitoring valve and rock drilling apparatus |
| 08/03/2005 | CN1648408A Petroleum and natural gas drilling operation monitoring and controlling managing system |
| 08/02/2005 | US6923871 Cleaning bore hole using high energy, low energy jets |
| 07/28/2005 | WO2004104358A3 Continuous on-bottom directional drilling method and system |
| 07/28/2005 | US20050162169 Tracking the positional relationship between a boring tool and one or more buried lines using a composite magnetic signal |
| 07/28/2005 | US20050161260 System for communicating information between a rig location and a cpmputer network and methods using the system |
| 07/28/2005 | US20050161258 Acoustic position measurement system for well bore formation |
| 07/28/2005 | US20050161231 Telemetry system for the bi-directional communication of data between a well point and a terminal unit situated on the surface |
| 07/27/2005 | EP1556579A1 Automated method and system for recognizing well control events |
| 07/27/2005 | CN2713132Y High temperature testing cable |
| 07/27/2005 | CN1644871A Injection system for eliminating sucking pressure as coming out of hole |
| 07/26/2005 | US6920943 Mapping tool for tracking and/or guiding an underground boring tool |
| 07/26/2005 | CA2366496C Steerable modular drilling assembly |
| 07/20/2005 | EP1555388A1 Method for removing soils |
| 07/20/2005 | EP1554462A2 Apparatus and method of monitoring and signaling for downhole tools |
| 07/20/2005 | CN1643233A Dynamic annular pressure control apparatus and method |
| 07/19/2005 | US6918454 Automated control system for back-reaming |
| 07/19/2005 | US6918453 Method of and apparatus for directional drilling |
| 07/14/2005 | WO2005064111A1 Method and system for controlling power consumption during a rock drilling process and a rock drilling apparatus therefore |
| 07/14/2005 | CA2546364A1 Method and system for controlling power consumption during a rock drilling process and a rock drilling apparatus therefore |
| 07/13/2005 | CN2709651Y Safety controller for drilling winch |
| 07/13/2005 | CN2709650Y Digital weight indicator |
| 07/07/2005 | WO2005061853A1 A method for setting down a bit in the construction of a well |
| 07/07/2005 | WO2005008017A3 Instrumented drill head, related drilling/bolting machines, and methods |
| 07/07/2005 | US20050149306 Iterative drilling simulation process for enhanced economic decision making |
| 07/06/2005 | EP1550788A2 Three dimensional steerable system |
| 07/06/2005 | CN1636108A In situ thermal processing of a hydrocarbon containing formation and improvement of won fluid before further processing |
| 07/05/2005 | US6913095 Closed loop drilling assembly with electronics outside a non-rotating sleeve |
| 06/29/2005 | EP1356186B1 Closed loop fluid-handing system for well drilling |
| 06/29/2005 | CN1633543A Acoustic position measurement system for well bore formation |
| 06/28/2005 | US6910541 Macro assisted control system and method for a horizontal directional drilling machine |
| 06/23/2005 | US20050133259 Autodriller bit protection system and method |
| 06/23/2005 | DE102004055995A1 Vorrichtung, Verfahren und Sensor zum Bestimmen einer auf ein Bohrwerkzeug wirkenden Belastung The device, method and sensor for determining a load exerted on a drilling tool |
| 06/22/2005 | CN2705593Y Electronic head driller and disc type brake interface |
| 06/22/2005 | CN2705592Y Automatic controller for hydraulic logging winch |
| 06/14/2005 | US6904981 Dynamic annular pressure control apparatus and method |
| 06/14/2005 | CA2216543C Milling tool, whipstock, milling system and method of forming a window in the wall of a tubular |
| 06/01/2005 | CN2703122Y Tower type long-stroke pumping unit underloading protector |
| 06/01/2005 | CN2703116Y Underbalancing well hydraulic auxiliary pipe |
| 05/26/2005 | WO2005047640A2 Sytem and method for damping vibration in a drill string |
| 05/26/2005 | WO2004083970A3 Distributed control system |
| 05/26/2005 | WO2004074623A3 Automated control system for back-reaming |
| 05/26/2005 | US20050109097 Downhole tool sensor system and method |
| 05/26/2005 | CA2755416A1 A torsional bearing assembly for transmitting torque to a drill bit |
| 05/25/2005 | CN1619098A Downhole tool sensor system and method |
| 05/25/2005 | CN1619097A Method of regulating layered water distribution using pressure wave |
| 05/24/2005 | US6896448 Automatically adjustable caisson clamp |
| 05/24/2005 | US6896055 Method and apparatus for controlling wellbore equipment |
| 05/24/2005 | CA2167676C Method for controlling the head of a drilling or core-drilling device and apparatus for carrying out this method |
| 05/19/2005 | US20050103491 Activity data capture system for a well service vehicle |
| 05/17/2005 | US6892812 Automated method and system for determining the state of well operations and performing process evaluation |
| 05/12/2005 | US20050098350 Three dimensional steering system and method for steering bit to drill borehole |
| 05/11/2005 | CN2698978Y Real time monitoring and controlling device for under balance drilling |
| 05/05/2005 | US20050096848 Automatic control system and method for bottom hole pressure in the underbalance drilling |
| 05/05/2005 | US20050096846 Method and apparatus for controlling wellbore equipment |
| 05/05/2005 | US20050092483 In situ thermal processing of a hydrocarbon containing formation using a natural distributed combustor |
| 05/04/2005 | CN1611742A Under balance drilling bottom pressure automatic control system and method |
| 04/28/2005 | US20050087367 System and method for interpreting drilling data |
| 04/28/2005 | US20050087344 System and Method to Control Multiple Tools Through One Control Line |
| 04/27/2005 | EP1525494A2 Automated rig control management system |
| 04/27/2005 | CN2695634Y Fixed pulley anti-touch device |
| 04/27/2005 | CN2695601Y Automatic controller of drilling mounting |
| 04/27/2005 | CN1199338C Improved coring drill motor and method for obtaining core sample of matter |
| 04/21/2005 | US20050081618 Apparatus for Weight on Bit Measurements, and Methods of Using Same |
| 04/20/2005 | EP1524402A1 Apparatus for downhole strain measurements and methods of using same |
| 04/20/2005 | CN2693950Y Centralized control box for cluster wells |
| 04/20/2005 | CN1608167A In situ thermal processing of a hydrocarbon containing formation using a natural distributed combustor |
| 04/19/2005 | US6882154 Tracking the positional relationship between a boring tool and one or more buried lines using a composite magnetic signal |
| 04/14/2005 | WO2005033907A2 Activity data capture system for a well service vehicle |
| 04/14/2005 | WO2005033468A1 Method and device for impact loosening of thread joints |
| 04/14/2005 | US20050080595 Methods for designing fixed cutter bits and bits made using such methods |
| 04/14/2005 | CA2538920A1 Detection of impact loosening of thread joints |
| 04/07/2005 | DE4323126B4 Handgeführtes Bohrgerät The hand-held drill |
| 04/06/2005 | CN2690590Y Full Closed remote control oil pumping unit control cabinet |
| 03/31/2005 | US20050071120 Method and apparatus for determining drill string movement mode |
| 03/30/2005 | EP1297244B1 Case-based drilling knowledge management system |
| 03/30/2005 | CN1601053A Method for measuring and adjusting flux of separated-zone water infection oil field |
| 03/30/2005 | CN1601049A Automatic downlink system |
| 03/29/2005 | US6871713 Apparatus and methods for sampling and testing a formation fluid |
| 03/29/2005 | US6871712 Remote control for a drilling machine |
| 03/29/2005 | CA2356576C An improved coring bit motor and method for obtaining a material core sample |
| 03/24/2005 | WO2004101944A3 Method of and system for directional drilling |