Researchers have now developed a one-dimensional mathematical flow model to indirectly observe the formation and accumulation of methane hydrates under different lithological and fluid conditions in the Nankai Trough of Japan. Numerical simulations using this model revealed important insights that could help in the extraction of methane hydrates and the prevention of geohazards in the future.
"With this model, we aimed to obtain insights into the distribution regularity of methane hydrate and the factors controlling hydrate generation. So, building on the original model, we explored the effects of deep fluid supply and reservoir lithology on the distribution and quantity of methane hydrates. We employed a smoother flux configuration to better observe the impact of methane flux variation on the simulation results," explains Dr. Tomaru.
Furthermore, the team used typical permeability values of sand and mud to run simulations and understand the impact of permeability changes caused by lithological units on hydrate distribution. The results further revealed that SElaborating on these results, Dr.
Beneath the cold, dark depths of the Arctic ocean sit vast reserves of methane. These stores rest in a delicate balance, stable as a solid called methane hydrates, at very specific pressures and ...