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 |