Natural gas hydrate dissociation

Abstract

Experimental study of natural gas hydrate dissociation can provide a theoretical basis and technical reserves for future hydrate exploitation. Hydrate dissociation includes the thermodynamic and dynamic processes. Once thermodynamic conditions of the dissociation are satisfied, the dynamics plays a significant role for hydrate dissociation. Here, we establish and describe the techniques and methods for hydrate dissociation research from both the macroscopic and microscopic views. Macroscopic dissociation experiments mainly focus on the reaction devices, detection methods, and technical approach, including methane hydrate and different natural gas hydrates dissociation in vacuum. Microscopic dissociation experiment introduces an experimental technique to observe the microprocess of THF hydrate dissociation in situ using nuclear magnetic resonance imaging, intending to investigate the micro-mechanism of hydrate dissociation.