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Surface-Consistent Amplitude Corrections: How to Deal with the Near Surface Imprints?

K. Garceran1, D. Le Meur1, T. Le Ruyet1, D. Lafarge1, N. Badel1, G. Popa2, S. Al Mesaabi3, and S. Mahmoud 4

2Al Hosn Gas


The application of surface-consistent amplitude corrections is one of the key steps used in land seismic time processing to correct for amplitude variations generated by a complex near surface. In some Middle-East areas, a combination of sand dunes, sabkhas, and gravel plains cause a time-varying, frequency-dependent filtering effect. This effect is not only present in the shallow part of the seismic section but is also visible in the deeper layers, as the ray path passes twice through the near surface. The surface-consistent decomposition of the amplitude aims at correcting for these near-surface effects.


AAPG Search and Discovery Article #90188 ©GEO-2014, 11th Middle East Geosciences Conference and Exhibition, 10-12 March 2014, Manama, Bahrain