173314 ⎘
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 Receivers
Detection and Mitigation of Drilling Hazards through Time-Domain Electromagnetic Transmitters and Unmanned Aerial Vehicle Receivers
#2METHOD FOR MEASURING SPECTRUM PARAMETERS OF FORMATION OUTCROP AND ROCK MASS
#3System and method for controlled-source electromagnetic exploration based on staggered frequency excitation of crossed sources
#4GEOPHYSICAL SURVEYING APPARATUS, SYSTEM AND METHOD
#5GEOPHYSICAL SURVEYING APPARATUS, SYSTEM AND METHOD
#6METHOD OF DETECTION IN AN ELECTRICALLY CONDUCTIVE MEDIUM
#7Detection of near subsurface voids that are resistive or contain conductive elements within the void space
#8Method for collecting and processing tensor artificial-source electromagnetic signal data and device thereof
#9Heterogeneous subsurface imaging systems and methods
#10Apparatus for orienting an electromagnetic field sensor, and related receiver unit and method
#11Method and apparatus for marine electrical exploration
#12Calibration of electromagnetic measurement tool
#13Three-dimensional digital virtual imaging device and method for stratigraphic texture of borehole core
#14Three-dimensional directional transient electromagnetic detection device and method for mining borehole
#15Fiber optic sensor array for electromagnetic data collection
#16System and method for in-sea electrode conditioning
#17Methods and apparatus for electromagnetic surveying using dynamically-selected source waveforms
#18Method and system for broadband measurements using multiple electromagnetic receivers
#19Non-polarized geophysical electrode
#20System and method for in-sea electrode conditioning
#21Electromagnetic sensor cable and electrical configuration therefor
#22Method for compensating marine geophysical sensor measurements for effects of streamer elongation
#23Fiber optic system for electromagnetic surveying
#24Deriving an electromagnetic field in one direction based on measurement data of one or more sensing elements for measuring an electromagnetic field in another direction
#25Method and apparatus for evaluating submarine formations
#26Method and device for carrying out marine electrical exploration during a ship travel
#27Method for hydrocarbon reservoir mapping and apparatus for use when performing the method
#28Fiber optic system for electromagnetic surveying
#29Method for positioning and predicting concealed orebody based on parallel double-tunnel transient electromagnetic exploration