The focus of this Thesis is to study the reservoirs of the Sapinhoá Field , located in the Santos Basin on the southeastern Brazilian continental margin. The Santos Basin is a huge hydrocarbon province (Faria et al 2017) with a great variety of oil discoveries in the early 2000s at ultra-deep waters carbonate reservoirs. These discovered reservoirs are known as the Pre-Salt province. The carbonate reservoirs usually are very complex to understand and characterize. Normally they have a great variety of geological facies, diverse composition and distinct petrophysical properties. Particularly, the porosity permeability relationship is one of the greatest uncertainties related to these rocks, and have strong implications in reservoir management.