The purpose of this study is to evaluate the quality of reservoir of Sarvak Formation in the one of the oilfields located in the northwest of the Persian Gulf for which geological, geophysical and petro-physical data have been used. Inversion is one of the methods for extracting petro-physical properties from inversion-related data taken from the surface. In the present study, input data including three dimensional data together with well information and interpreted horizons in the one of the oilfields were used and also the Inversion methods, Sparse Spike and band limit were applied based on the model. Finally, the cubic acoustic impedance was obtained and the produced sections in these methods were compared with each other. In the meantime, the model-based approach provides an acceptable result.