本文以二氧化碳地下深部咸水层封存为背景,研究了在地质封存过程中二氧化碳水溶液通过天然岩心时发生矿化反应的过程.本文主要通过实验研究,利用核磁共振设备,对比了矿化反应前后,钙化岩心注入二氧化碳饱和水溶液后渗透率、孔隙率等基本参数的变化.发现在矿化反应过程中,岩心的渗透率和孔隙率都会不断增加,而入口及原大孔隙部分孔隙率增加尤为明显,发现矿化反应对渗透率的影响较大,在实际二氧化碳地质封存模拟时,需要考虑矿化反应对渗透率的影响.
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