Abstract
To extract natural gas from hydrates by injection of hot water, the decomposition of natural gas hydrates in a porous medium under the influence of a heat flow was experimentally and numerically simulated. It is assumed that the radial diffusion model describes the decomposition of natural gas hydrates in a porous medium due to the injection of hot water, and the decomposition of hydrates is a first-order reaction. By combining the decomposition reaction rate equation with the heat transfer rate equation and the heat balance equation, the relationship between the accumulatedamount of methane (n -n ) and the decomposition time t was obtained. By comparing the results of the experiment0 Hand numerical simulation, it was found that under the experimental conditions, the hydrate decomposition ratecoefficient is consistent with the results of the obtained analytical dependences.
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