Acoustic equation pre-stack reverse-time migration imaging condition based on Poynting vector

Poynting vector in the electromagnetism was introduced into acoustic area and hence the Poynting vector expression in acoustic equation.On the basis of classic cross-correlation imaging condition,cross-correlation imaging condition based on Poynting vector was concluded,interbed reflection was thus recognized according to the propagation direction of seismic wave energy and attenuated in the process of wave field cross-correlation.To verify the effectiveness of the algorithm,calculation based on different models applying classic cross-correlation imaging condition and the algorithm proposed were done.The comparison of the two kinds of migration results shows that cross-correlation imaging condition based on Poynting vector can suppress the interbed reflection effectively and thus a more accurate migration imaging result can be acquired.