Experimental research on the formation and storage of the methane gas hydrate

In order to confirm the hydrate characteristics the methane hydrate was formed under a few conditions (1) in pebbles which simulated a sediments of deep sea floor, (2) at the natural interface of methane gas and water and (3) with the forced stirring of gas and water. Formed hydrate was dissociated by means of depressurization and heating. The self-preservation effect was tested after maintaining at an atmospheric pressure and a lower temperature of freezing. The stability of the hydrate was confirmed by burning the dissociated methane gas. As the results some features were obtained. To expedite a quick forming of hydrate heat absorption as well as stirring of gas and water is essential. Either heating or depressurization is effective for dissociation but each presented different phenomena. Self-preservation effect could be improved by selecting a suitable freezing temperature.