Séminaire GM/LGO de Marco TERZARIOL (Géosciences Marines, Ifremer, Brest)

Methane Hydrate-Bearing Sediments: The Role of Fines

 

Methane hydrate-bearing sediments (MHBS) are relevant to the organic carbon cycle, seafloor instability, and as a potential energy resource. Sediment characteristics affect hydrate formation, gas migration, and potential recovery strategies. The first part of this presentation will focus on testing the Geotech properties of natural hydrate-bearing sediments. Finally, we combine the physics of granular materials with robust physical models to anticipate the pore habit of methane hydrates as a function of the sediment characteristics and depth. Results highlight the critical role of fines on sediments mechanical and flow properties, hydrate pore habit, and potential fluid migration.