The characterization of damage zones surrounding geological faults is important for the oil and gas industry, as the geological structures present can affect both the fluid flow in reservoirs and the geomechanical behavior of fields. As an initial approximation, the width of damage zones has been directly correlated with fault throw. However, the dispersion of data collected in the field indicates that other variables, besides fault throw, can also affect the width of the damage zone, particularly in carbonate rocks. In this sense, the objective of this dissertation is to evaluate the impact of geomechanical properties of carbonates on the prediction of the thickness of the damage zone in geological faults in the Brazilian pre-salt fields. Due to uncertainties in defining geomechanical properties, they were inferred from empirical correlations that were established with porosity. Then, using numerical modeling, a design of experiments was carried out, obtaining the width of the damage zone from different combinations of geomechanical parameters. Next, employing the response surface method, regression models were defined that predict the width of the damage zone from fault throw and porosity of the evaluated carbonate rocks. The results indicate that the proposed regression models allow for the estimation of damage zone widths consistent with field observations and therefore can be used for preliminary characterization of damage zones in exploration processes in the oil and gas industry.