O emprego de atributos sísmicos a partir de uso aprimorado de fluxo de trabalho

Abstract

This work explores the use of seismic attributes and meta-attributes in geological interpretation, focusing on seismic sections 0027-0214, 0043-0047, 0043-0037 and 0043-0048 in the Potiguar basin. The application of these techniques proved to be essential for the identification of structural and stratigraphic features, such as faults, fractures and tops of geological formations, crucial elements for hydrocarbon exploration. The similarity attribute stood out for its ability to identify discontinuity zones, while attributes such as energy and instantaneous frequency contributed to the recognition of high-energy reflectors and lithological variations. The combination of attributes, through meta-attributes such as SimEner and SqrtSim, allowed a more detailed and visually enriched analysis, despite some limitations observed regarding the loss of information in certain features. The use of OpendTect software was crucial to the success of the interpretation, enabling the efficient application of the attributes and their visualization. In addition, the integration of the results obtained with bibliographic reviews allowed a better understanding of the petroleum system of the region. The results of this work reinforce the importance of careful approaches in improving the workflow in reflection seismic, promoting greater assertiveness in the identification of hydrocarbon reserves and contributing to the advancement of geophysical exploration. This study highlights the fundamental role of innovative methodologies in the exploration of complex sedimentary basins.