Abstract
In this paper we present an experiment on the behavior of COz hydrate formation in sand layer. The equilibrium condition and growth kinetics of CO_2 hydrate formation were examined by using a small-scale pressure cell filled with porous media in unsaturated condition of water and gas. The mechanism of CO_2 hydrate formation in porous media and the rate of crystal growth were clarified on the basis of the method of in-situ observation and measurement.
