Gas hydrate formation from high concentration KCl brines at ultra-high pressures

다국어 초록 (Multilingual Abstract)

The phase equilibria of methane hydrates were measured in high concentration KCl brines (up tosaturation concentration) at ultra-high pressures (up to 200 MPa). The results show the hydrateequilibrium boundary moves to lower temperature and higher pressure as the KCl concentrationincreased up to the saturation limit and the hydrate equilibrium is unchanged from the saturationconcentration for four-phase equilibrium. From the measurements at the saturation concentration, wealso determine the pressure effect on the solubility of KCl. The kinetic studies reveal hydrates form evenwith salt precipitated and hydrates and salt are competing solid precipitation under saturated conditions.

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