Abstract：Seismic survey in piedmont zone leads quite a few problems such as low S/N, severe static corrections, and complex seismic wave propagation caused by both rugged topography and complex structures. To solve the problems, we propose an approach in the paper and establish a set of seismic imaging processing flows based on "true-surface" seismic imaging plane and high frequency static corrections. The core of the flows is the depth domain velocity model building and inverse time migration on rugged topography surface. Both wave field continuation and imaging are implemented for the true rugged topography surface. Long wavelength static corrections are solved in migration imaging process, to better deal with the complex seismic imaging in piedmont zones. Test results on model and field data show that the proposed approach can better deal with seismic imaging in rugged topography and complex structure areas, and is an ideal way for seismic imaging in complex piedmont zones.
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