Correlação de dados sísmicos multiescala e integração com arcabouço tectônico regional: exemplo da área do Domo de Piratininga, SP

Abstract

The study area covers the Piratininga Dome, a structural high composed by a center horst bordered by faults. The main objective of this work was to establish a systematic multiscale approach, in which high resolution seismic data was compared to conventional seismic, digital terrain models and geophysical potential data. The subsurface data include an 80km conventional seismic section and the well 1-PA-1-SP. The Kingdon (Seismic Micro-Technology) software was used to interpret the seismic data in order to map the main horizons and faults. To test the multiscale hipothesys was acquired a high resolution seismic line just over the regional seismic trace. This detailed line measures 1 km length and 360m depth. The seismic processing was based on a conventional flowchart for CDP technique with Vista (Gedco) software. Shuttle Radar Topography Mission (SRTM) and aeromagnetic data of Botucatu and Bauru projects were used to the lineaments interpretation. Comparison between observed horizons in the high resolution and conventional seismic lines made possible to test different alternatives to map structural and stratigraphic features. The obtained multiscale geological elements hierarchies enlarge the knowledge in reservoir resolution. The results of the interpretation indicate the close relationship between regional structural framework and features observed in seismic data, and can be applied to enhance and guide the studies of analogous to depth reservoirs.