Patents
Patents for G01V 3 - Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination or deviation (25,929)
01/2004
01/20/2004US6679153 Mine detector and inspection apparatus
01/20/2004CA2249197C Method and apparatus for monitoring mineral production
01/20/2004CA2241591C Nuclear magnetic resonance logging with azimuthal resolution
01/20/2004CA2188207C Methods and apparatuses for measuring characteristics of a formation around a borehole
01/20/2004CA2135961C Method, apparatus and installation for surveying and monitoring a hydrocarbon reservoir penetrated by a well
01/15/2004WO2004005850A2 Apparatus and method for measurement of the magnetic induction tensor using triaxial induction arrays
01/15/2004WO2002073236A3 Simultaneous determination of formation angles and anisotropic resistivity using multi-component induction logging data
01/15/2004US20040008122 Apparatus for use with capacitive presence detection systems
01/15/2004US20040008036 System for the wireless transmission of information and/or energy between a removabe vehicle seat and the vehicle body
01/15/2004US20040008030 Tracking the positional relationship between a boring tool and one or more buried lines using a composite magnetic signal
01/15/2004US20040008027 Method and apparatus for detecting diffusion sensitive phases with estimation of residual error in NMR logs
01/15/2004CA2718016A1 Method and apparatus for tracking objects and people
01/14/2004EP1379735A2 Method and apparatus for determining the location of underground objects during a digging operation
01/14/2004CN1468379A In-vehicle body detection method
01/14/2004CN1134745C Induction sensor
01/13/2004US6677757 Method and apparatus for determination of electromagnetic properties of underground structure
01/13/2004US6677756 Multi-component induction instrument
01/13/2004US6677755 Circuit for selectively enabling and disabling coils of a multi-coil array
01/13/2004US6677753 Stand-up MRI apparatus
01/13/2004US6677752 Close-in shielding system for magnetic medical treatment instruments
01/13/2004CA2375432C Method for radial profiling of resistivity at multiple depths of investigation
01/08/2004WO2004003593A1 Method for joint interpretation of multi-array induction and multi-component induction measurements with joint dip angle estimation
01/08/2004WO2004003592A1 Scanner for nuclear quadrupole resonance measurements and method therefor
01/08/2004WO2004003591A1 A method of and a system for surveillance of an environment utilising electromagnetic waves
01/08/2004WO2003058277A3 Metal detector integrated with site-existing pathway
01/08/2004CA2496966A1 Scanner for nuclear quadrupole resonance measurements and method therefor
01/08/2004CA2491168A1 Method for joint interpretation of multi-array induction and multi-component induction measurements with joint dip angle estimation
01/07/2004EP1378768A2 Apparatus for detecting metal objects being put into a trash can
01/07/2004EP1377850A1 Apparatus and method for locating subsurface objects in conductive soils by induction measurements
01/07/2004EP1377806A1 Proximity sensor system having proximity sensor with bipolar signal output
01/06/2004US6675123 Magnetic tracking methods and systems
01/06/2004US6674366 Inanimate entity line-of-bearing location method via linking material-specific non-uniform static electrification spatial gradient pattern to dielectrophoresis
01/06/2004US6674286 That can buried underground or underwater to study long-term trends without undue maintenance; resistance
01/06/2004US6674276 Surface object locator with level indicator and scribe tip
01/06/2004CA2363534C Shielding method and apparatus using transverse slots
01/06/2004CA2306976C Method and apparatus for hydraulic fracturing analysis and design
01/02/2004EP1373939A1 An inhomogeneous background based focusing method for multi-array induction measurements in a deviated well
01/02/2004EP1373937A1 "2-d inversion of multi-component induction logging data to resolve anisotropic resistivity structure"
01/02/2004EP1373936A1 An efficient and accurate pseudo 2-d inversion scheme for multicomponent induction log data
01/02/2004EP1373030A1 Occupant sensor
01/02/2004EP1372477A2 Simplified water-bag technique for magnetic susceptibility measurements on the human body and other specimens
01/01/2004US20040000999 System and method for scanning carriers for objects
01/01/2004US20040000919 Moving source dipole electromagnetic exploration device for deeper and poorer conductors and a method of detecting such conductors
01/01/2004US20040000918 Apparatus and method for locating objects behind a wall lining
01/01/2004US20040000912 Marine electromagnetic measurement system
01/01/2004US20040000905 Determining wettability of an oil reservoir using borehole nmr measurements
01/01/2004US20040000904 Apparatus for detecting metal objects being put into a trash can
12/2003
12/31/2003WO2004001455A1 A data acquisition unit, system and method for geophysical data
12/31/2003WO2004001436A2 Antenna core material for use in mwd resistivity measurements an d nmr measurements
12/31/2003CN2596374Y Radio digital transmission electronic well head motor
12/31/2003CN1133183C Heat-treatment of glassy metal alloy for article surveillance system markers
12/31/2003CN1133080C Magnetic detecting technique
12/31/2003CA2490105A1 A data acquisition unit, system and method for geophysical data
12/30/2003US6671623 Methods and system for characterizing the response of subsurface measurements to determine wellbore and formation characteristics
12/30/2003CA2120400C Nuclear magnetic resonance measuring apparatus
12/28/2003CA2433972A1 Apparatus and method for locating objects behind a wall lining
12/28/2003CA2432673A1 Apparatus for detecting metal objects being put into a trash can
12/25/2003US20030234648 NMR spectroscopy using a gradient field NMR tool
12/24/2003WO2003106587A1 Double emulsion based drilling fluids
12/24/2003WO2003025342A3 A method and apparatus for a multi-component induction instrumentmeasuring system
12/24/2003CN2595079Y Assembled luminous field source for transient electromagnetic method
12/24/2003CN2594811Y Array microresistivity logging instruments with multiple laminar capacity
12/24/2003CN2594810Y Array lateral logging instruments with multiple laminar capacity
12/24/2003CN1132019C NMR system and method for formation evaluation using diffusion and relaxution log measurements
12/24/2003CN1131924C Downhole instrument with outer cover able to penetrance ray
12/23/2003US6667621 Method and apparatus for determining the resistivity of a formation surrounding a cased well
12/23/2003US6667620 Current-directing shield apparatus for use with transverse magnetic dipole antennas
12/23/2003CA2270757C Nuclear magnetic resonance logging with azimuthal resolution
12/18/2003WO2003104844A1 Method and system for seafloor geological survey using vertical electric field measurement
12/18/2003US20030231017 Formation-based interpretation of NMR data for carbonate reservoirs
12/18/2003US20030230893 Spoolable composite coiled tubing connector
12/17/2003EP1372266A1 Electronic equipment and method of manufacturing the same
12/17/2003EP1370890A1 Detecting a boundary in a formation
12/17/2003EP1370889A2 Method for merging position information with measurements and filtering to obtain high-quality images that are positioned accurately with respect to global coordinates
12/17/2003EP1370746A1 Electromagnetic borehold surveying method
12/17/2003CN1462365A Coil impedance detection method, objection decection method and apparatus using the same
12/17/2003CN1461950A Method and system for automatically measuring roch complex electrical resistance by coil method
12/16/2003US6664788 Nonlinear electroseismic exploration
12/16/2003US6662459 Electronic azimuth meter and timepiece
12/16/2003CA2341947C Magnetic resonance imaging in a borehole
12/11/2003WO2003102497A1 Method and apparatus for electromagnetic position and orientation tracking with distortion compensation employing modulated signal
12/11/2003US20030229450 Induction well logging apparatus and method
12/11/2003US20030229449 Method and apparatus for the use of multicomponent induction tool for geosteering and formation resistivity data interpretation in horizontal wells
12/11/2003US20030227282 Method and apparatus of to detect metal fragment in patients
12/10/2003EP1368777A2 Volumetric laminated sand analysis
12/10/2003CN2591646Y Underground ferromagnetic pipe detecting instrument
12/10/2003CN1130574C Resistivity log correction method
12/10/2003CN1130573C Method and instrument for detecting underground magnetofluid to search water
12/09/2003US6661367 Non-destructive probing system and a method thereof
12/09/2003US6661240 Methods and systems for capacitive motion sensing and position control
12/09/2003US6661226 NMR apparatus and methods for measuring volumes of hydrocarbon gas and oil
12/09/2003US6661115 Conductive e-field occupant sensing
12/09/2003US6659200 Actuator assembly and method for actuating downhole assembly
12/09/2003CA2244409C Electrical well logging fluid and method of using same
12/04/2003WO2003100467A1 System and method for electromagnetic wavefield resolution
12/04/2003WO2003100466A1 Induction well logging apparatus and method
12/04/2003WO2002037132A8 Methods and devices for dissolving hyperpolarised solid material for nmr analyses
12/04/2003US20030222651 System and method for evaluation of thinly laminated earth formations
12/04/2003US20030222637 Proximity detector
12/04/2003CA2485522A1 System and method for electromagnetic wavefield resolution