173312 ⎘
Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices Controlled source electromagnetic [CSEM] surveying
Computing values for surveying a subterranean structure based on measurements according to different electromagnetic survey techniques
#302Method for acquiring and interpreting transient electromagnetic measurements
#303Fast 3D inversion of electromagnetic survey data using a trained neural network in the forward modeling branch
#304System and method for electromagnetic wavefield resolution
#305Electromagnetic surveying for hydrocarbon reservoirs
#306Electromagnetic Data Processing
#307Method for combined transient and frequency domain electromagnetic measurements
#308Estimating noise at one frequency by sampling noise at other frequencies
#309Technique and Apparatus to Track and Position Electromagnetic Receivers
#310Electromagnetically detecting thin resistive bodies in shallow water and terrestrial environments
#311Electromagnetically detecting thin resistive bodies in shallow water and terrestrial environments
#312System and method for CSEM exploration in polar regions
#313ELECTROMAGNETIC SURVEYING
#314Method for acquiring and interpreting seismoelectric and electroseismic data
#315Electromagnetic surveying for resistive or conductive bodies
#316System and method for 3D frequency domain waveform inversion based on 3D time-domain forward modeling
#317Electromagnetic surveying
#318Method and apparatus for locating gas hydrate
#319Electromagnetic wavefield analysis
#320Electrode array for marine electric and magnetic field measurements having first and second sets of electrodes connected to respective first and second cables
#321Kalman filter approach to processing electromagnetic data
#322Low noise, towed electromagnetic system for subsurface exploration
#323Logarithmic spectrum transmitter waveform for controlled-source electromagnetic surveying
#324Electromagnetic surveying for hydrocarbon reservoirs
#325Multi-component field sources for subsea exploration
#326System and method for towing subsea vertical antenna
#327Electromagnetic surveying for hydrocarbon reservoirs
#328Electromagnetic survey system with multiple sources
#329Method for removing air wave effect from offshore frequency domain controlled-source electromagnetic data
#330Electromagnetic surveying for hydrocarbon reservoirs
#331Remotely operable measurement system and method employing same
#332Method for spatially interpreting electromagnetic data using multiple frequencies
#333System and method for using time-distance characteristics in acquisition, processing, and imaging of t-CSEM data
#334Transmitter antenna
#335Method for identifying resistivity anomalies in electromagnetic survey data
#336Electromagnetic surveying for resistive or conductive bodies
#337Method for identifying subsurface features from marine transient controlled source electromagnetic surveys
#338Electromagnetic surveying for hydrocarbon reservoirs
#339Electromagnetic surveying for hydrocarbon reservoirs
#340System and method for electromagnetic wavefield resolution
#341System and method for hydrocarbon reservoir monitoring using controlled-source electromagnetic fields
#342Electromagnetic surveying
#343Method and system for seafloor geological survey using vertical electric field measurement
#344Electromagnetic surveying for hydrocarbon reservoirs
#345Electric power grid induced geophysical prospecting method and apparatus
#346Subsurface conductivity imaging systems and methods
#347Electromagnetic surveying for hydrocarbon reservoirs
#348Short-offset transient electromagnetic transmission system
#349Method for positioning and predicting concealed orebody based on parallel double-tunnel transient electromagnetic exploration
#350Sonde devices
#351Detecting underground utilities
#352Sonde devices including a sectional ferrite core structure
#353Method for optimizing an electromagnetic measurement sensor array
#354Floating vessel based system for generating a multidimensional seismic data set for a target area
#355Nulled-signal utility locating devices, systems, and methods