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