Influence of hydrate on geological CO2 storage under the seabed.

Abstract: The purpose of the present study is to investigate the influence of CO₂ hydrate on the flow of liquid CO₂ injected in the porous media. In order to clarify the influence of CO₂ hydrate, differential pressure and temperature are measured under both condition of CO₂ hydrate generated and not generated. As the results, in the case of the hydrate generation, it is confirmed that temperature of the test section rise. And it is identified that the differential pressure become large compared with the case of not generated. It is suggested that flow resistance arises due to choking of CO₂ hydrate in the porous media. Friction factor is also compared with the Ergun’s equation which is proposed for single-phase flow in a porous media. The measured friction factor is larger than that estimated from Ergun’s equation. [Copyright &y& Elsevier]