A METHOD OF SEISMIC PROCESSING, AND IN PARTICULAR A 3D SEISMIC PROSPECTION METHOD IMPLEMENTING SEISMIC DATA MIGRATION

摘要

A SEISMIC PROCESSING METHOD IN WHICH THE EIKONAL EQUATION IS SOLVED TO DETERMINE THE TRAVEL TIMES OF A SOUND WAVE BETWEEN A SEISMIC SOURCE AND A POINT UNDER GROUND, THE METHOD BEING CHARACTERIZED IN THAT TO SOLVE THE EIKONAL EQUATION, EXTRAPOLATION PROCESSING IS PERFORMED ON THE VELOCITY VARIABLE, WHICH VARIABLE IS EQUAL TO THE RATIO OF THE DISTANCE BETWEEN THE SEISMIC SOURCE AND THE UNDERGROUND POINT DIVIDED BY THE PROPAGATION TIME BETWEEN SAID SOURCE AND SAID POINT.(FIG 2)