Microscope insights into gas hydrate formation and dissociation in sediments by using microfluidics

Investigation of the formation behaviors of CO2 hydrate in porous media below the freezing point

“…This indicated that the differences on the formation rate were mainly caused by the initial pressure under condition of below the freezing point. Compared with the influence of temperature on the formation process of hydrate, the influence of initial pressure on hydrate formation was relatively indistinctive in the porous media below the freezing point 59,60 …”

“…Compared with the influence of temperature on the formation process of hydrate, the influence of initial pressure on hydrate formation was relatively indistinctive in the porous media below the freezing point. 59,60 Figure 7 shows the evolution curves of the conversion rate of CO 2 hydrate under different pressure conditions. As shown in Figure 7, the conversion rate of CO 2 hydrate was basically the same in the initial stage.…”

“…Compared with the influence of temperature, the influence of initial pressure had an indistinctive influence on the conversion rate of CO 2 hydrate in the porous media below the freezing point. 59,60 Because the initial pressure would affect the nucleation process of CO 2 hydrate and the conversion rate grew fast in the initial stage of the hydrate formation during the experiments.…”

Midstream on a chip: ensuring safe carbon dioxide transportation for carbon capture and storage

“…28 In terms of high pressure work, methane hydrate in packed or porous media has been studied for applications of hydrates in nature. 29–31 More similar to this fundamental study, microfluidics have been used recently to study gas hydrate kinetics in a simple one channel high pressure microfluidic device. 32,33…”

“…28 In terms of high pressure work, methane hydrate in packed or porous media has been studied for applications of hydrates in nature. [29][30][31] More similar to this fundamental study, microfluidics have been used recently to study gas hydrate kinetics in a simple one channel high pressure microfluidic device. 32,33 In this work, to resolve prior discrepancies throughout the literature of the water content of liquid carbon dioxide at hydrate forming conditions, a microfluidic device coupled with GCMS phase analysis is applied, the first such time these hydrate measurements have been made in one, i.e., midstream on a chip.…”