Estimation of the Consolidation Parameter on microporous carbonate rocks

摘要

The estimation of dry bulk modulus is determinant for the success of the application of Biot-Gassmann theory to forecast fluid changes within a reservoir. The Pride model is one of the various models described in literature for predicting the dry elastic moduli of rocks. However, that model depends on the consolidation parameter and its appropriate choice implies in the accuracy of that model. In this paper, two methods for estimating the consolidation parameter are tested and compared in microporous carbonate rocks. The observation of how this parameter changes as pressure increases allowed the proposal of a relationship that relates the consolidation parameter and the unconfined porosity to be used at high effective pressure.