f Imaging salt with pre-stack depth migration

Most seismic data are processed using conventional methods onder the assumption that the earth is close to horizontal layering. This assumption is rarely fulfilled. Nevertheless, the seismic image quality obtained using these methods, is reasonably good, even in areas with structures of moderate complexity. Areas with saltdomes are beyond moderate complexity. By experience it is very difficult to obtain reliable seismic images using conventional methode here. Altemative processing methode are therefore needed. The purpose of our study is to investigate whether Pre-Stack Depth Migration can improve the seismic image when large saltdomes are present.