Patents
Sitemap › G01 - Measuring; Testing › G01V - Geophysics; Gravitational measurements; Detecting masses or objects; Tags › G01V 3 - Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination or deviation
Patents for G01V 3 - Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination or deviation (25,929)
03/2003
03/20/2003US20030052674 Methods and apparatus for measuring flow velocity in a wellbore using NMR and applications using same
03/20/2003US20030052673 Methods and apparatus for measuring flow velocity in a wellbore using NMR and applications using same
03/20/2003US20030052672 Methods and apparatus for measuring flow velocity in a wellbore using nmr and applications using same
03/20/2003US20030051914 Electromagnetic wave resistivity tool having a tilted antenna for geosteering within a desired payzone
03/20/2003CA2452215A1 Detection of subsurface resistivity contrasts with application to location of fluids
03/19/2003EP1293806A2 Method for detecting an object of conducting material and corresponding sensor
03/19/2003EP1292932A1 Device for sensing magnetically marked paper and marked paper readable by said device
03/19/2003CN1103442C Detecting apparatus and detecting method
03/18/2003US6534986 Permanently emplaced electromagnetic system and method for measuring formation resistivity adjacent to and between wells
03/18/2003US6534985 Modular electromagnetic sensing apparatus having improved calibration
03/18/2003US6534980 Downhole NMR tool antenna design
03/13/2003WO2003021782A1 Presence sensing device
03/13/2003WO2003003046A3 Method for correcting downhole nmr data contaminated by borehole signals
03/13/2003US20030050759 Method of imaging subsurface formations using a virtual source array
03/13/2003US20030048105 Method and apparatus for determining the nature of subterranean reservoirs
03/13/2003US20030048104 Radio system for characterizing and outlining underground industrial developments and facilities
03/13/2003US20030047998 Conductive e-field occupant sensing
03/12/2003EP1291678A1 A method and apparatus for determining the resistivity of a formation surrounding a cased well
03/12/2003EP1290475A2 Displacement sensing system
03/12/2003EP1183661B1 A tag for electronic article identification, a method for encoding an identity code into such a tag, and an apparatus for the identification thereof
03/12/2003EP1088291B1 A sensor, a method and a system for remote detection of objects
03/11/2003US6531869 Methods and apparatus for measuring flow velocity in a wellbore using NMR and applications using same
03/11/2003US6531868 System and methods for formation evaluation while drilling
03/10/2003CA2577579A1 Methods and apparatus for measuring flow velocity in a wellbore using nmr and applications using same
03/10/2003CA2577578A1 Methods and apparatus for measuring flow velocity in a wellbore using nmr and applications using same
03/06/2003WO2003019236A1 In-vehicle body detection method
03/06/2003WO2003019105A1 Device and method for identifying metal body
03/06/2003WO2003018709A1 Electrically conductive oil-based mud
03/06/2003WO2002101929A3 Non-contact proximity sensor
03/06/2003WO2002075360A3 Method for locating and inspecting underground or other non-visible non-electrically conductive pipes
03/06/2003US20030043692 Method and apparatus for determining the nature of subterranean reservoirs
03/06/2003US20030043067 Ground penetrating radar array and timing circuit
03/06/2003CA2456351A1 Electrically conductive oil-based mud
03/05/2003EP1287387A2 Determination of t1 relaxation time from multiple wait time nmr logs acquired in the same or different logging passes
03/05/2003EP1287380A2 Ground penetrating radar array and timing circuit
03/05/2003EP0779990B1 Time-of-flight radio location system
03/04/2003US6529833 Reservoir monitoring in a laminated reservoir using 4-D time lapse data and multicomponent induction data
03/04/2003US6529140 Magnetic bi-dimensional position sensor
03/04/2003US6529008 Electromagnetic induction coil sensor
03/04/2003US6529007 Temperature compensation for ground piercing metal detector
03/04/2003US6529006 Method and apparatus for resolving the position and identity of buried conductive bodies
03/04/2003US6528995 Methods and apparatus for measuring flow velocity in a wellbore using NMR and applications using same
02/2003
02/27/2003WO2003016953A1 Downhole nmr processing
02/27/2003WO2003016952A1 Portable metal detection and classification system
02/27/2003WO2003016950A1 Method of determining formation anisotropy in deviated wells using separation of induction mode
02/27/2003WO2003016826A2 In-situ heavy-oil reservoir evaluation with artificial temperature elevation
02/27/2003US20030040882 Data acquisition system
02/27/2003US20030038719 System for detecting the occupancy status of a seat
02/27/2003US20030038631 Method and apparatus of reducing ringing in a nuclear magnetic resonance probe
02/26/2003EP1285285A2 Steerable three-dimensional magnetic field sensor system for detection and classification of metal targets
02/26/2003EP1086444B1 Identification tag with enhanced security
02/26/2003EP0896678B1 Displacement-current sensor and method for determining three-dimensional position, orientation and mass distribution
02/26/2003EP0796446B1 Method and apparatus for logging underground formations using radar
02/26/2003CN1399144A Frequency wave resonant prospecting method and equipment
02/25/2003US6525540 Method and device for detection of em waves in a well
02/25/2003US6525539 Apparatus and method for locating subsurface objects in conductive soils by measurements of magnetic fields by induced currents with an array of multiple receivers
02/25/2003US6525538 Position and orientation locator/monitor
02/25/2003US6525535 NMR apparatus for oil well logging of large and small diameter wells
02/25/2003US6525534 System and methods for NMR signal processing without phase alternated pair stacking
02/25/2003US6525531 Detection of passing magnetic articles while adapting the detection threshold
02/25/2003US6525329 Method and device for detecting currency
02/25/2003US6525003 Electrical well logging fluid and method of using same
02/23/2003CA2399257A1 A data acquisition system
02/20/2003US20030036695 Medical device with position sensor having accuracy at high temperatures
02/20/2003US20030034778 Portable metal detection and classification system
02/20/2003US20030034777 In-situ heavy-oil reservoir evaluation with artificial temperature elevation
02/20/2003US20030034776 Method and facility for storing and indexing web browsing data
02/20/2003US20030034444 Signal processing for object detection system
02/20/2003DE19925760C2 Vorrichtung zur Bestimmung einer Einfallsrichtung von elektromagnetischen Wellen An apparatus for determining an incident direction of electromagnetic waves
02/19/2003EP1147606B1 Micropower capacitance-based proximity sensor
02/18/2003US6522907 Surgical navigation
02/18/2003US6522285 Ground-penetrating imaging and detecting radar
02/18/2003US6522138 Resolution enhancement for sequential phase alternated pair nuclear magnetic resonance measurements
02/18/2003US6522137 Two-dimensional magnetic resonance imaging in a borehole
02/18/2003US6522136 Well logging technique and apparatus for determining pore characteristics of earth formations using magnetic resonance
02/18/2003US6520911 Ultrasound-hall effect imaging system and method
02/18/2003US6520535 Occupant detection system
02/13/2003WO2003012483A1 Encoding scheme for producing magnetic field signals having desired spectral characteristics
02/13/2003WO2003012482A1 Method and system for reducing interference
02/13/2003WO2003012479A2 Method and system for producing a magnetic field signal usable for locating an underground object
02/13/2003WO2003012478A2 System for recovering information from a magnetic field signal usable for locating an underground object and method
02/13/2003WO2002041032A3 Through casing resistivity measurement in permanently installed downhole production environment
02/13/2003US20030031091 Method, system, and apparatus for processing seismic data by means of the time-varying optimum offset concept
02/13/2003US20030030439 Virtual steering of induction tool for determination of formation DIP angle
02/13/2003US20030029345 Ultra sensitive magnetic field sensors
02/12/2003CN1396452A Observation device for soil characteristic and observation method for soil characteristic
02/11/2003US6518913 Apparatus and method for locating objects under a body of water
02/11/2003US6518758 Methods and apparatus for measuring flow velocity in a wellbore using NMR and applications using same
02/11/2003US6518755 Measurement technique and apparatus for high-resolution multi-volume NMR well logging
02/11/2003US6518754 Powerful bonded nonconducting permanent magnet for downhole use
02/11/2003US6517106 Occupant detection system
02/06/2003WO2003010486A2 Object sensing
02/06/2003US20030028324 Method for joint interpretation of multi-array induction and multi-component induction measurements with joint dip angle estimation
02/06/2003US20030025503 Multi-component induction instrument
02/05/2003EP1281816A2 Excavator data acquisition and control system and process
02/05/2003EP1280977A2 Measuring device for detecting a body moving in relation to a tubular container
02/05/2003CN1395690A Apparatus and method for detecting contamination of object by metal
02/05/2003CN1395115A Hidden line detection instrument
02/05/2003CN1100999C Circuit-like metallic foil sheet for resonance tag and process for fabricating it
02/04/2003US6516212 Three dimensional mapping
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