Experimental study on the effect of cations on the growth of calcium carbonate

Abstract Considering the current absence of adequate equipment at home and abroad to directly detect the ion content of formation water under high temperature and pressure conditions. A static experiment was established to examine the solubility of ions in fluids. The effect of cations on the solubility of CaCO 3 at different temperatures and pressures was investigated through experiments, and the variation law of ion content and its internal relationship under high temperature and pressure conditions were studied. In solution of barium chloride and magnesium chloride, the solubility of CaCO 3 increases gradually as the level of its concentration. At the same concentration, the solubility of CaCO 3 show decreases first and then increases trend as the level of temperature. In the solution of strontium chloride, as the level of strontium chloride concentration, and the solubility of CaCO 3 was progressively reduced. At the same concentration, the solubility of CaCO 3 decreases first and then increases as the level of temperature. under the influence of carbon dioxide, the solubility of CaCO 3 gradually decreases with increasing temperature. influence of pressure on the solubility of CaCO 3 at low temperature is larger. The solubility of CaCO 3 exhibits minimal variation as the level of PCO 2 at higher temperature. However, when the pressure reaches a certain degree (above 3MPa), the a downward trend in solubility was observed.