Tuning the state-of-the-art numerical simulator for energy recovery from methane hydrates

by Praveen LINGA
Tuning the state-of-the-art numerical simulator for energy recovery from methane hydrates

Methane hydrates (MHs) have been considered as the future source of natural gas because of its vast global resource volume and high energy storage capacity. In order to recover energy from MHs safely and effectively, there is a need for a fundamental understanding on the dynamic behavior of MH formation and dissociation together with the associated fluids flow behavior in geological media. In this study, we employ the state-of-the-art hydrate simulator (T+H v1.5) to numerically analyze the processes of MH formation and dissociation in sandy medium in a 1.0 L reactor. Using an inverse modelling (history-matching) technique that minimizes deviations between the experimental observations and numerical predictions, we determine the important flow, thermal, and kinetic parameters of the resulting MH bearing sediment (MHBS) and address the issues of the type of hydrate reaction and of the spatial heterogeneity of the MHBS. We demonstrate that numerical modelling validated by experimental data provides novel alternative to the visualization of in-situ phase distribution inside reactor.