Challenging Issues on Environment and Earth Science Vol. 8,
13 August 2021,
Methane gas hydrates are non-stoichiometric crystalline solids generated by the fusion of methane gas molecules with water molecules at low temperature and high pressure. MGH formation has been an issue for many years in the oil, gas, chemical, and other industries because hydrates can block pipelines or valves. A blowout in drilling operations could be caused by hydrate development in a pipeline. Gas hydrate equilibrium conditions must be understood in order to plan operations in the oil, gas, and chemical industries where hydrate nucleation/formation has occurred.It becomes critical to monitor the early stages of hydrate production in systems comprising various inhibitors, promoters, salts, and porous materials. The simple addition of salts, electrolytes in the host sediments, or MGH water can disrupt the stability conditions of MGHs. This chapter studied the physical properties of natural hydrate reservoirs all over the world. This chapter also deals with the phase equilibrium data of hydrate formation and their comparison in the presence of salt, inhibitors, and promoters.