Gas hydrates attracted worldwide attention due to their potential as huge energy resource in the recent decades. Effective parameters which influence the formation of hydrates are high pressure, low temperature and water presence. HYSYS software is one of the major simulators which are widely used in the chemical and thermodynamic processes. This research was conducted to simulate gas hydrate formation of Lavan-3 gas well and Salman gas field using the HYSYS software. The steady state simulation of hydrate formation was performed by the Peng-Robinson equation of state. The data were compared with the experimental ones. It was concluded that the HYSYS is able to predict hydrate formation, properly (Average Absolute Error<1). Two novel correlations were also developed to estimate hydrate formation conditions of natural gas.
