System for detecting substructure microfractures and method ther

System for displaying seismic data on a cathode-ray tube

System for estimating azimuthal variations in seismic data

System for evaluation of velocities of acoustical energy of sedi

System for geophysical prospecting using induce...

System for interconnecting elements of a receiving device of gre

System for laterally positioning a towed marine cable and method

System for locating a towed marine object

System for marine seismic exploration

System for measuring shear wave travel times

System for measuring stress in downhole tubulars

System for monitoring the changes in fluid content of a petroleu

System for noise attenuation in marine seismic streamers

System for plotting subsoil structure and method therefor

System for reducing drill string multiples in field signals

System for reducing towing noise in marine seismic survey...

System for seismic digital data acquisition over water covered a

System for sorting seismic data in marine surveys

System for undersea seismic prospecting

System of acquistion and centralization of data obtained through