Abstract
We present a new method of amplitude-preserved pre-stack time migration in 3D vertical transversely isotropic (VTI) media. The travel time and amplitude of a wave propagating in VTI media are calculated by using one-way wave operators and the stationary-phase theory. An imaging weight from the deconvolution imaging condition is introduced to produce amplitude-preserved image gathers for hydrocarbon and fluid detection. Velocities and stacking anisotropic parameters are estimated by a semblance scanning method. A time-dependent migration aperture corresponding to the dip of subsurface structure is then obtained to balance imaging quality and imaging noises. Numerical examples demonstrate that our method is accurate, robust and easy to implement.
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
