Atributos e meta-atributos sísmicos em dados de reflexão a partir do uso de software especialista

Seismic Attributes and Meta-Attributes in Reflection Data Using Expert Software

Abstract

This study presents the analysis of two distinct seismic sections processed with the objective of generating attributes and meta-attributes capable of effectively enhancing geological features associated with elements and processes of the oil system, which are directly linked to hydrocarbon accumulations. Using the seismic interpretation software OpendTect, three attributes and three meta-attributes were generated following a predefined workflow. Seismic interpretation of the data enabled the identification of various features of both structural and stratigraphic nature, which may serve as geological traps or migration pathways, as well as prominent geological unconformities. Comparatively, meta-attributes proved more effective than individual attributes by allowing the enhancement of multiple features within a single image that previously required separate visualizations. The supervised and technically grounded application of these processes facilitates the generation of images that support the reduction of exploratory risk in hydrocarbon prospecting.