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ON VERTICAL SEISMIC PROFILE PROCESSING *
Author(s) -
TARIEL P.,
MICHON D.
Publication year - 1984
Publication title -
geophysical prospecting
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.735
H-Index - 79
eISSN - 1365-2478
pISSN - 0016-8025
DOI - 10.1111/j.1365-2478.1984.tb00738.x
Subject(s) - aliasing , usable , geology , data processing , amplitude , acoustics , vertical seismic profile , seismology , economic geology , geophone , gemology , interference (communication) , seismic wave , regional geology , seismic exploration , sampling (signal processing) , signal processing , interpretation (philosophy) , limit (mathematics) , engineering geology , computer science , optics , digital signal processing , telmatology , engineering , physics , telecommunications , electronic engineering , mathematics , database , mathematical analysis , channel (broadcasting) , detector , world wide web , undersampling , tectonics , programming language , volcanism
A bstract From the wealth of information which can be deduced from VSP, the information most directly comparable to well logs is considered: P‐wave and S‐wave interval velocity, acoustic impedance, and the velocity ratio γ= V s / V p . This information not only allows better interpretation of surface seismic sections but also improves processing. For these results to be usable a number of precautions must be taken during acquisition and processing; the sampling in depth should be chosen in such a way that aliasing phenomena do not unnecessarily limit the spectra during the separation of upwards and downwards travelling waves. True amplitudes should be respected and checked by recording of signatures, and the interference of upwards and downwards travelling waves should be taken into account for the picking of first arrivals. The different steps in processing and the combination of results in the interpretation of surface seismic results are described with actual records.