Inversão AVA de onda P para estimativa de densidades com alta precisão

In this paper, with the aid of the RFDM technique, we present an innovative strategy to estimate the densities with high precision using only the information of prestack P wave amplitudes. The model used as an example is a high impedance reservoir, chosen because currently there are no approximations that allow to correctly determining the reflection coefficients for this type of model. Therefore, in this case the use of the exact Zoeppritz equations is mandatory. The results obtained in this work shows that the strategy created with the use of RFDM allows high precision estimate of P and S wave velocities, as well as the densities for first and second layer independently. Moreover, this strategy does not require a priori information about the parameters of the model.