PDVSA INTEVEP undertook a study in a carbonate area located in a gas and condensate reservoir offshore Venezuela, where the main challenge was related to the high heterogeneity of the rock fabric. The geoscientists needed to understand how the pore system pattern reflects good porosities throughout the limestone while having significant permeability variations. The data was collected from wells with cores, as variations in the petrophysical properties are much harder to predict in wells without core data. The main objective was to apply a clustering approach in order to build electrofacies models and integrate them with sedimentological interpretations by extrapolating those models to wells without core data.
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