Patents
Sitemap › E21 - Earth or rock drilling; Mining › E21B - Earth or rock drilling; Obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells › 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
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)
04/2003
04/09/2003CN2544101Y Digital control frequency-changing drill feeder
04/08/2003US6543550 Long range electronic guidance system for locating a discrete in-ground boring device
04/03/2003WO2003027714A1 Common interface architecture for horizontal directional drilling machines and walk-over guidance systems
04/03/2003US20030063013 Common interface architecture for horizontal directional drilling machines and walk-over guidance systems
04/02/2003EP1297244A1 Case-based drilling knowledge management system
04/02/2003EP0960261B1 Tool and method for drilling a lateral well
04/02/2003EP0927294B1 Coupling piece for use at simultaneous earth and/or rock drilling with an upper rotary percussion device and a lower percussion device
04/01/2003US6540020 Motor by-pass valve
03/2003
03/27/2003US20030057366 Method of kick detection and cuttings bed buildup detection using a drilling tool
03/27/2003US20030056963 Apparatus for controlling a downhole drilling motor assembly
03/27/2003US20030056811 Coiled tubing wellbore cleanout
03/27/2003CA2357999A1 Apparatus for controlling a downhole drilling motor assembly
03/20/2003US20030051919 Three-dimensional steering tool for controlled downhole extended-reach directional drilling
03/20/2003US20030051913 Mapping tool for tracking and/or guiding an underground boring tool
03/12/2003CN1401880A Drill bit advancing direction predicting method, controlling method and controlling system for horizontal well
03/12/2003CN1401878A Automatic perpendicular drilling tool
03/06/2003WO2002038915A3 Adaptive filter prediction method and system for detecting drill bit failure and signaling surface operator
03/06/2003US20030044241 Auger piling
03/05/2003EP1287229A1 Real-time method for maintaining formation stability
03/05/2003EP0815350B1 Drilling device
02/2003
02/25/2003US6523613 Hydraulically actuated valve
02/13/2003US20030029308 Speed governor
02/11/2003US6516898 Continuous wellbore drilling system with stationary sensor measurements
02/06/2003US20030024736 Method of drilling a bore hole
02/04/2003US6513606 Self-controlled directional drilling systems and methods
01/2003
01/23/2003US20030015351 Method and system for predicting performance of a drilling system of a given formation
01/16/2003WO2002079601A8 Device and method for determining drill parameters
01/16/2003WO2002025319A3 Methods and apparatus for interactive communications
01/15/2003EP1274922A1 Method of and system for optimizing rate of penetration based upon control variable correlation
01/14/2003US6505689 Arrangement for controlling rock drilling
01/14/2003US6505684 Hydraulic actuator
01/07/2003US6502640 Hydraulic actuator
01/07/2003CA2143596C Apparatus and method for drilling boreholes
01/02/2003EP1268977A1 Method for estimating the position of a drill
12/2002
12/27/2002WO2002103158A1 Use of axial accelerometer for estimation of instantaneous rop downhole for lwd and wireline applications
12/27/2002WO2002038908A3 Differential sensor measurements to detect drill bit failure
12/26/2002US20020195276 Use of axial accelerometer for estimation of instantaneous ROP downhole for LWD and wireline applications
12/26/2002US20020195275 Remote lock-out system and method for a horizontal directional drilling machine
12/25/2002CN1097137C 钻孔系统 Drilling System
12/19/2002US20020190718 System and method for detecting an underground object using magnetic field sensing
12/19/2002US20020189864 Method for the drilling of oil wells
12/18/2002CN1386201A Method and system for solving finite element models using multi-phase physics
12/18/2002CN1386200A Feature modeling method in a finite element model
12/12/2002US20020185313 Apparatus and method for formation testing while drilling with minimum system volume
12/10/2002USRE37923 Hydraulic circuit for automatic control of a horizontal boring machine
12/10/2002US6491115 Directional drilling machine and method of directional drilling
12/10/2002US6491102 Downhole multiplexer and related methods
11/2002
11/28/2002WO2002057589A9 Internal power source for downhole detection system
11/28/2002US20020177955 Completions architecture
11/26/2002US6484819 Directional borehole drilling system and method
11/26/2002US6484818 Horizontal directional drilling machine and method employing configurable tracking system interface
11/26/2002US6484800 Downhole flow control devices
11/21/2002WO2002092966A1 Drilling control arrangement
11/20/2002EP0847479B1 Method and device for drilling
11/12/2002US6478097 Electrically sequenced tractor
11/12/2002US6478096 Apparatus and method for formation testing while drilling with minimum system volume
11/07/2002WO2002038914A3 System and method for signalling downhole conditions to surface
10/2002
10/30/2002EP1252413A2 System for automatically drilling and backreaming boreholes
10/29/2002US6470974 Three-dimensional steering tool for controlled downhole extended-reach directional drilling
10/24/2002WO2002046565A3 Speed governor
10/23/2002EP1135577A4 Method of and system for monitoring drilling parameters
10/22/2002US6467557 Long reach rotary drilling assembly
10/17/2002US20020148648 Internal power source for downhole detection system
10/17/2002US20020148646 Adaptive filter prediction method and system for detecting drill bit failure and signaling surface operator
10/17/2002US20020148645 Stalled motor by-pass valve
10/17/2002US20020148644 Differential sensor measurement method and apparatus to detect a drill bit failure and signal surface operator
10/10/2002WO2002079601A1 Device and method for determining drill parameters
10/10/2002WO2002038909A3 Mean strain ratio analysis method and system for detecting drill bit failure and signaling surface operator
10/10/2002WO2002003262A9 System and method for defining and displaying a reservoir model
10/10/2002WO2002003101A9 Method and system for high-resolution modeling of a well bore in a hydrocarbon reservoir
10/10/2002US20020144842 System and method for signalling downhole conditions to surface
10/09/2002EP1246993A1 Three dimensional steerable system
10/03/2002US20020139585 Reverse circulation drilling system with bit locked underreamer arms
10/03/2002US20020139581 Mean strain ratio analysis method and system for detecting drill bit failure and signaling surface operator
10/02/2002EP1244866A1 Improved method for the drilling of oil wells
10/02/2002EP0694114B1 Automatic drilling system
10/02/2002DE10123999A1 Vorrichtung und Verfahren zum Ermitteln von Bohrparametern Apparatus and method for determining drilling parameters
10/01/2002US6457537 Mapping tool for tracking and/or guiding an underground boring tool
09/2002
09/28/2002CA2369669A1 Iterative drilling simulation process for enhanced economic decision making
09/26/2002WO2002038908A9 Differential sensor measurements to detect drill bit failure
09/26/2002US20020138240 Method and apparatus for predicting an operating characteristic of a rotary earth boring bit
09/26/2002US20020133958 Continuous measurement-while-drilling surveying
09/25/2002EP1242713A1 Controlling the flow of driving fluid to a system of multiple hydraulic motors
09/25/2002EP1242710A2 Remote lock-out system and method for a horizontal direction drilling system
09/24/2002US6454023 Mapping tool for tracking and/or guiding an underground boring tool
09/19/2002WO2001009478A9 Long reach rotary drilling assembly
09/18/2002EP0836670B1 Method and system for logging mechanical parameters of formations crossed through by a borehole
09/17/2002US6450255 Downhole flow control devices
09/12/2002US20020124652 Spectral power ratio method and system for detecting drill bit failure and signaling surface operator
09/11/2002EP0708872B1 Method and apparatus for controlling the head of a drilling or core-drilling device
09/10/2002US6446718 Down hole tool and method
09/06/2002WO2002050398B1 Cloded loop fluid-handing system for well drilling
09/06/2002WO2002038916A3 An apparatus and method for determining downhole bit failure
09/03/2002US6443242 Method for wellbore operations using calculated wellbore parameters in real time
08/2002
08/29/2002US20020120401 Method and apparatus for prediction control in drilling dynamics using neural networks
08/22/2002US20020116129 Automated bore planning method and apparatus for horizontal directional drilling
08/22/2002US20020112893 Apparatus and method for controlling an underground boring machine
08/22/2002US20020112888 Drilling system and method
08/13/2002US6431270 Downhole tools with a mobility device
08/07/2002EP1229172A1 Method and apparatus for making drilled piles in hard ground
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