Pre-Migration Demultiple Solution for Seismic Data

This technical report presents an innovative workflow for addressing multiple contamination in seismic data from the south of Oman, specifically targeting the Haushi interval. The workflow utilizes a pre-migration, pre-stack demultiple sequence that effectively removes surface and internal multiples through the generation of accurate reflectivity models. The methodology involves least-squares multiple imaging to derive a reliable reflectivity of multiple generators in the near surface, which is then used in a one-way wave-equation multiple prediction method. The report details the iterative approach employed to model and subtract multiple energy, emphasizing the importance of a primary model to preserve geological events during the subtraction process. Results indicate that the demultiple flow significantly improved the imaging of the Haushi interval and facilitated a clearer geological interpretation. The findings demonstrate the effectiveness of the proposed method in enhancing seismic data quality, thereby aiding exploration efforts in the region.