Abstract
Summary Imaging of steep structures is a huge challenge due to poor illumination. Prismatic waves have a large amount of steeply dipping structural information, which can be used to improve the imaging effect of steeply dipping structures. Subsurface attenuation causes amplitude loss and phase distortion in seismic waves, and ignoring this attenuation during imaging results in ambiguity of the offset amplitude. A steeply dipping structural target oriented viscoacoustic least-squares reverse time migration (LSRTM) of joint prisms and primaries (J-LSRTM) is proposed by deriving Q-compensated wavefield propagation and adjoint operators of prisms wave and primaries wave, and Q-compensated demigration operator. Numerical examples on synthetic and in field data validate the advantages of the proposed viscosonic LSRTM for joint acoustic and prismatic waves over conventional viscoacoustic LSRTM and uncompensated LSRTM when using attenuation observation data.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
