Abstract
The gas–liquid–solid phase transition of hydrates is complex and has effects that are coupled with the heat-mass transfer in reservoirs; thus, this phase transition is related to the determination of flow assurance and production efficiency. The microfluidic technology applied in this research can simulate a porous medium and is an alternative to the conventional sand-packing approach, encompassing real characteristics of interfaces between multiple phases, reducing the randomness of pore shape, and mastering the distribution of flow channels. The hydrate phase transition was observed directly, while the relationship between the hydrate saturation and the permeability was analyzed. The entire experimental cycle was greatly shortened and was performed at lower cost and with more convenient operation than traditional sand-packing methods. The results indicate that hydrate saturation is negatively correlated with permeability. Considering the properties of etched throats, the newly generated particles can re...
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