Dip-dependent residual moveout

Guojian Shan and Biondo Biondi

shan@sep.stanford.edu, biondo@sep.stanford.edu

ABSTRACT

Residual moveout is an effective tool for interval velocity analysis for depth migration. However, the conventional residual moveout method assumes that the reflectors in the subsurface are all flat, and thus estimates curvature parameters for velocity analysis that are inaccurate for steeply dipping reflectors. In this paper, we develop a dip-dependent residual moveout method, which is performed in the Fourier domain and handles dip effects.