| 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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| 01/31/2002 | WO2002008571A1 Method for fast and extensive formation evaluation |
| 01/31/2002 | WO2001044614B1 Remote lock-out system and method for a horizontal direction drilling system |
| 01/30/2002 | EP1176316A1 Hydraulic device for two actuators |
| 01/30/2002 | CN2474722Y Intelligent electric energy saving device of pumping unit |
| 01/26/2002 | CA2353367A1 Hydraulic device |
| 01/24/2002 | WO2002006633A1 Remote control for a drilling machine |
| 01/24/2002 | WO2002006630A1 Apparatus and method for maintaining control of a drilling machine |
| 01/24/2002 | US20020010548 Real-time method for maintaining formation stability and monitoring fluid-formation interaction |
| 01/24/2002 | US20020010547 Long range electronic guidance system for locating a discrete in-ground boring device |
| 01/23/2002 | CN2473325Y Bias guide tool |
| 01/23/2002 | CN1332878A Apparatus and method of well management |
| 01/22/2002 | CA2131456C Downhole tool for controlling the drilling course of a borehole |
| 01/17/2002 | US20020005297 Underground boring machine employing solid-state inertial navigation control system and method |
| 01/17/2002 | CA2689859A1 Electromagnetic wave resistivity tool with tilted antenna |
| 01/16/2002 | EP0815345B1 Milling tool, whipstock, milling system and method of forming a window in the wall of a tubular |
| 01/10/2002 | WO2002003265A2 A method for modeling an arbitrary well path in a hydrocarbon reservoir using adaptive meshing |
| 01/10/2002 | WO2002003264A2 A method for solving finite element models using time slabbing |
| 01/10/2002 | WO2002003263A2 Method and system for coordinate transformation to model radial flow near a singularity |
| 01/10/2002 | WO2002003262A2 System and method for defining and displaying a reservoir model |
| 01/10/2002 | WO2002003103A2 Method and system for solving finite element models using multi-phase physics |
| 01/10/2002 | WO2002003101A2 Method and system for high-resolution modeling of a well bore in a hydrocarbon reservoir |
| 01/10/2002 | WO2002002901A2 Feature modeling in a finite element model |
| 01/10/2002 | CA2415257A1 A method for modeling an arbitrary well path in a hydrocarbon reservoir using adaptive meshing |
| 01/10/2002 | CA2413165A1 Method and system for coordinate transformation to model radial flow near a singularity |
| 01/10/2002 | CA2383711A1 Method and system for solving finite element models using multi-phase physics |
| 01/03/2002 | WO2002001251A2 Method and system for modeling geological structures using an unstructured four-dimensional mesh |
| 01/03/2002 | US20020002426 Intrinsically safe communication and control system for use in hazardous locations including satalite box and console with monitor and backlit each is intrinsically safe |
| 01/01/2002 | US6334486 Downhole flow control devices |
| 12/27/2001 | WO2001098631A1 Case-based drilling knowledge management system |
| 12/27/2001 | WO2001079658A8 Method of and system for optimizing rate of penetration based upon control variable correlation |
| 12/27/2001 | US20010054505 Downhole flow control devices |
| 12/27/2001 | US20010054504 Downhole flow control devices |
| 12/26/2001 | CA2350371A1 Method for determining preferred drill bit design parameters and drilling parameters using a trained artificial neural network, and methods for training the artificial neural network |
| 12/25/2001 | CA2020960C Method of monitoring the drilling of a borehole |
| 12/20/2001 | US20010052427 Three dimensional steerable system |
| 12/20/2001 | US20010052426 Boring tool control using remote locator |
| 12/19/2001 | EP1163419A1 Control method for use with a steerable drilling system |
| 12/19/2001 | CN1327119A Buffer pressure control equipment for hydraulic rock drill |
| 12/13/2001 | WO2001094749A1 Real-time method for maintaining formation stability |
| 12/13/2001 | US20010050186 Enhanced computer control of in-situ drilling system |
| 12/13/2001 | CA2412337A1 Real-time formation stability and drilling fluid formation interaction monitoring capability |
| 12/06/2001 | WO2001044614A3 Remote lock-out system and method for a horizontal direction drilling system |
| 12/06/2001 | US20010047873 Damper pressure control apparatus for hydraulic rock drill |
| 12/05/2001 | EP1160416A2 Damper pressure control apparatus for hydraulic rock drill |
| 12/05/2001 | EP1159510A2 Wellbore primary barrier and related systems |
| 12/05/2001 | EP1159506A1 Steerable modular drilling assembly |
| 12/05/2001 | CN2463538Y Automatic rope-laying control device for oil recovery apparatus |
| 12/04/2001 | US6327539 Method of determining drill string stiffness |
| 12/04/2001 | US6325163 Bit torque limiting device |
| 11/29/2001 | WO2001090488A1 Auger piling |
| 11/29/2001 | US20010045300 Thruster responsive to drilling parameters |
| 11/22/2001 | US20010042643 Steerable modular drilling assembly |
| 11/22/2001 | US20010042642 Iterative drilling simulation process for enhanced economic decision making |
| 11/20/2001 | US6318478 Damper pressure control apparatus for hydraulic rock drill |
| 11/20/2001 | CA2080483C Method for automatically monitoring the vibrational condition of a drill string |
| 11/14/2001 | EP1153194A1 Automated bore planning method and apparatus for horizontal directional drilling |
| 11/13/2001 | US6315062 Horizontal directional drilling machine employing inertial navigation control system and method |
| 11/08/2001 | WO2001083933A1 Smart-ultrasonic/sonic driller/corer |
| 11/08/2001 | US20010037899 Apparatus and method for controlling an underground boring machine |
| 10/25/2001 | WO2001079658A1 Method of and system for optimizing rate of penetration based upon control variable correlation |
| 10/25/2001 | DE10018591A1 Device for displaying operating parameters of crude oil and natural gas drilling process comprises screen for displaying operating point and target field for operating point |
| 10/17/2001 | EP1146200A1 Drill bit design using neural networks |
| 10/15/2001 | CA2322147A1 Method and apparatus for predicting an operating characteristic of a rotary earth boring bit |
| 10/11/2001 | WO2001075268A1 Method for estimating the position of a drill |
| 10/10/2001 | EP1141858A2 Apparatus and method of well management |
| 10/10/2001 | EP1141511A1 Method for correcting positioning errors in rock drilling, and a rock drilling equipment |
| 10/10/2001 | CN1317069A Method of determining drill string stiffness |
| 10/03/2001 | CN2451734Y State displacement transmitter for oil well intelligent monitoring system |
| 10/02/2001 | US6297638 Method for controlling cable boring |
| 09/27/2001 | US20010024597 In or relating to pipe installation |
| 09/26/2001 | EP1135577A1 Method of and system for monitoring drilling parameters |
| 09/25/2001 | US6293356 Method of and system for optimizing rate of penetration in drilling operations |
| 09/25/2001 | US6293355 Method of controlling rock drilling |
| 09/20/2001 | WO2001069035A1 Directional drilling machine and method of directional drilling |
| 09/20/2001 | US20010022238 Directional drilling machine and method of directional drilling |
| 09/18/2001 | US6289997 Apparatus and method for controlling an underground boring machine |
| 09/18/2001 | CA2214741C Tractor for remote movement and pressurization of a rock drill |
| 09/11/2001 | US6286614 Motion compensator for drilling from a floater |
| 09/05/2001 | EP1130213A1 Device for monitoring pipe installation |
| 09/05/2001 | CN2446276Y Constent pressuring device for drilling tool |
| 08/30/2001 | US20010017545 Tracking the positional relationship between a boring tool and one or more buried lines using a composite magnetic signal |
| 08/30/2001 | CA2602280A1 Integrated reservoir optimization |
| 08/28/2001 | US6282452 Apparatus and method for well management |
| 08/28/2001 | US6279668 Boring tool control using remote locator including a command generation arrangement and method |
| 08/22/2001 | CN1309229A Method and apparatus for research and evaluation of foundation type |
| 08/21/2001 | US6276465 Method and apparatus for determining potential for drill bit performance |
| 08/16/2001 | US20010013426 In-situ drilling system with dust collection and overload control |
| 08/14/2001 | US6273199 Arrangement in rock drill and method of controlling rock drilling |
| 08/09/2001 | US20010012703 Data transfer system |
| 08/07/2001 | US6272434 Drilling system with downhole apparatus for determining parameters of interest and for adjusting drilling direction in response thereto |
| 07/26/2001 | WO2001053655A1 Improved method for the drilling of oil wells |
| 07/26/2001 | WO2000042287A9 Automated bore planning method and apparatus for horizontal directional drilling |
| 07/26/2001 | CA2396282A1 Improved method for the drilling of oil wells |
| 07/25/2001 | EP1117901A1 Control mechanism for a horizontal drilling machine |
| 07/19/2001 | WO2001051761A1 Steerable modular drilling assembly |
| 07/19/2001 | WO2001051760A2 System for automatically drilling and backreaming boreholes |
| 07/17/2001 | US6260616 Downhole flow control devices |
| 07/11/2001 | EP1114240A1 Method of determining drill string stiffness |
| 07/10/2001 | CA2096941C Downhole drilling data processing and interpreting device, and method for implementing same |
| 07/05/2001 | WO2001048353A1 Autonomous omnidirectional driller |