Several models for viscosity have been proposed in the literature. Among them, the most prominent are Lohrenz-Bray-Clark (LBC) and the models there are based on Corresponding States Principle (CSP), such the one proposed by Pedersen et al.. Another corresponding state principle model is SUPERTRAPP, provided by NIST (US National Institute of Standards and Technology), which is actually a computer pro-gram based on the method proposed by Ely and Hanley. While LBC correlation is known for its simplicity, CSP stands out for its predictive capacity, being one of the most adopted models in the industry. Despite this fact, an additional tuning step is still necessary from experimental data to obtain an optimized CSP viscosity model. Even in reservoir simulations, where little impact caused by fluid properties are generally assumed to be true, improper viscosity estimates can lead to large deviations .