Influences of temperature and pressure on CO2 solubility in saline solutions in simulated oil and gas well environments

摘要: Abstract The phase equilibria of H2O CO2 NaCl systems is general interest to many scientific disciplines and technical fields. One aspect the CO2-mediated corrosion oil country tubular goods in deep saline aquifers. In this study, solubility experiments were conducted simulated gas well environments using a novel experimental apparatus method. deionised water solutions was measured at temperatures 303.15–363.15 K pressures 50–250 bar. impacts temperature, pressure salinity on are analysed quantitatively qualitatively consistent with published data. increases all cases, inhibits effect temperature some extent. An interesting phenomenon that much faster low than high ones. A transition 150 bar determined medium-low salinity.