2-1-1 CO₂を用いるメタンハイドレートの2次回収法における高濃度海水の利用に関する基礎的検討

抄録

Methane hydrate has been expected as Japan domestic energy resources. As one of enhanced recovery methods for methane hydrate, we have been doing laboratory experiments using exothermic reaction of carbon dioxide (CO₂) hydrate formation since FY2009. This paper shows a CO₂ hydrate temperature-pressure phase diagram when using high concentration NaCl solution. This result shows a possibility of using CO₂ in subsea layers near zero degree centigrade.