Prediction of hydrate formation throughout discharge of trapped gas in Tehran city natural gas distribution system

Abstract

This work is aimed to hydrate formation prediction throughout the discharge of trapped natural gas in the north super block of Tehran natural gas distribution system. A well known software is used to construct the numerical model of the north super block and the developed model is employed to predict the hydrate formation. Furthermore, the results of a field experiment carried out in a part of the Tehran gas network are used to calibrate the numerical model. Simulations indicate that the hydrate formation potential for pipes ended with a closed valve is high. It is also found that hydrate formation is sensitive to the soil temperature.