Application of Spectral Decomposition to the Definition of Carbonated Bodies in the Middle Member of Quintuco Formation (Lower Cretaceous), Central Neuquén Basin, Argentina
The study presents the application of Spectral Decomposition helping to define a model of carbonated bars in the Middle Member of Quintuco Formation. This platform is represented by shallow carbonated flooding deposits, with tidal bars development, where the thickest carbonates are found. The Quintuco Formation is a hydrocarbon reservoir with exploration potential in the central part of the Neuquén Basin.
Spectral Decomposition is a quick and effective method that gives better definition to determine stratigraphic architecture and structural features. It converts the seismic data originally in time or depth domain, to the frequency domain using the Discrete Fourier Transform or the Maximum Entropy method. Usually conventional seismic and their attributes are used to study the geology, but sometimes a wide range of frequencies could hide a particular event that is trying to be detected. With this technique it is possible to analyse independently each frequency revealing features that were hidden before.
The results from the Spectral Decomposition study helped to understand the distribution of the facies in the model and the structural trends that conditioned the deposit. This tool has been used to improve the development of oil in Loma La Lata field and will be of benefit to exploration activities.
Geologic Interpretation of Seismic Attributes and Amplitude Anomalies
2004 AAPG International Conference and Exhibition Technical Program