Abstract: This article presents the interference of the value of compressibility factor ‘ ‘ Z’ ‘ in calculating the correction factor of volume of natural several gas through simulations to under different state equations end conditions of temperature and pressure. Words Keys: compressibility, factor, correction, natural gas. The objective of this work is to present of objective form, on the basis of real distributed natural gas chromatography in Sergipe, the results of simulations that had been made using as simulation tool the equation of state of Redlich-Kwong (RK) and method AGANX19 to calculate the compressibility factor ‘ ‘ Z’ ‘. The simulations had been carried through in different situations of temperature and of pressure, where the factor of correction of volume of the natural gas was calculated taking in account the pressure, temperature and the compressibility factor (PTZ) and also was calculated the gotten error when this factor in the correction of the volume of the gas is disdained, making this correction leading in account only the temperature and the pressure of the gas (PT)..