THE INFLUENCE OF VELOCITY MODEL TO SEISMIC WAVEFIELD MIGRATION IMAGING

Because of the ambiguity of seismic migration velocity,the quality of seismic migration imaging always bores people.For a long time,the analysis of the velocity error almost were rarely quantitative,and only valid to the simple geology condition.In the paper,in order to reveal the characters of seismic migration image affected by velocity model and improve the precision of seismic migration and imaging,we present some analysis to the complex geology conditions,through modeling and migrating the theoretical model,deduce some features of seismic wave field imaging affected by velocity model,and give some advises to improve the imaging and some useful idea.