Depth And Time Domain Seismic Data, Non-elastic Effect Of The Compensation

After compensation of amplitude attenuation (caused by some factors, such as spherical diffusion, energy loss resulted by transmission), the amplitude of wave in deep stratum is still smaller than the wave near the surface. This is resulted by mechanical energy loss when wave transmits inelastic medium. In another words, the inelastic medium absorption induced amplitude attenuation and dispersion and phase distortion.Based on Futterman attenuation-dispersion relationships, a new compensation technique is proposed for the migrated seismic profile in time and depth domains. This method characterizes variable velocity, absorption coefficient and quality factor. It is feasible for improving SNR and resolution in seismic data. It's economical, fast and practical as well. Theoretical model and real data were used to test the procedure. The results show that the method developed here is powerful to compensate the effects of attenuation and dispersion on migrated data in time and depth domain.