Frequency-Domain Q-Compensated Reverse Time Migration Using a Stabilization Scheme

Seismic attenuation occurs during seismic wave propagation in a viscous medium, which will result poor image of subsurface structures. The compensation by directly amplifying the extrapolated wavefields may suffer from numerical instability because exponential for wavefields. To alleviate this issue, we have developed stabilized frequency-domain Q-compensated reverse time migration (FQ-RTM). In algorithm, use operator, includes both amplitude operator and dispersion correction wavefield extrapolation. is calculated based on dispersion-only viscoacoustic equation, while derived via division two (the wavefield). Benefiting stabilization scheme compensation, amplification noises suppressed. cross-correlation imaging condition exploited to obtain compensated image. layered model experiments demonstrate effectiveness great performance our method. BP gas examples further verify its feasibility stability. field data applications indicate practicability proposed comparison between acoustic results confirms that method able compensate suppressing high-frequency noise.