Adaptive Subtraction of Multiples – Application to Complex Seismic Data Onshore Libya

B039 Adaptive Subtraction of Multiples – Application to Complex Seismic Data Onshore Libya C. Hanitzsch* (Wintershall) L.J. van Veen (Wintershall) J. Ali (PGS Geophysical) & R. van Borselen (PGS Geophysical) SUMMARY The main difficulties for processing seismic data in Wintershall’s onshore concessions in the Libyan Sirte Basin are the presence of severe noise high-amplitude surface related multiples and internal reverberations that are interfering and partially masking the primary signal and some localized complexities in the overburden. This paper discusses the application of a cascaded de-multiple approach that resulted in a significant enhancement of the structural image of the 3D seismic