Pre-stack and post-stack seismic for detecting oil and gas based on dual-phase medium theory

It is observed that oil and gas reserviors exhibit high seismic wave attenuation. Through extracting the attenuation of seismic wave can detect oil and gas. On the basis of Biot's poroelastic theory, through formula derivation and analysis, we proposed a hydrocarbon detection method based on dual-phase medium theory using pre-stack and post-stack seismic. The inversion results of pre-stack and post-stack field data show that middle offset data for hydrocarbon detection is the best one, and post-stack data take the second place. Near offset data and far offset data are helpful for detecting none and high oil production areas as a supplementary information. Through comparing the results of pre-stack and post-stack data for hydrocarbon detection, we can improve the precision of using seismic to detect oil and gas.