Densities and Solubilities for Binary Systems of Carbon Dioxide + Water and Carbon Dioxide + Brine at 59 °C and Pressures to 29 MPa

Abstract

Densities and solubilities for binary systems of carbon dioxide + water and carbon dioxide + Weyburnformation brine were measured at a temperature of 59 °C and pressures up to 29 MPa. Density values were obtained for both the saturated and unsaturated aqueous carbon dioxide solutions at different pressures. A correlation in the literature was used to predict the solubility of carbon dioxide in the aqueous phase, and the results were compared with the measured data. The measured density of aqueous carbon dioxide solutions was correlated as a function of carbon dioxide concentration and pressure. A simple method for determining the density of aqueous carbon dioxide solutions was recommended.

Density measurement and equal density temperature of CO2+brine from Dagang — formation from 313 to 363 K

“…(12) The apparent molar volume of CO 2 in water V 2 φ was represented as a function of temperature in Garcia et al [21], while the effect of pressure and brine salinity on the apparent molar volume cannot be neglected for CO 2 +brine solution. So based on our experimental data and previous literature data such as Song et al [12], Li et al [13], Yan et al [16], and Hnedkovsky et al [22], the apparent molar volume of CO 2 can be expressed as a function of temperature, pressure and salinity of the brine: (13) where T (K) is temperature, p (MPa) is the pressure, s (mol·kg −1 ) is the salinity of brine, a i , b i , c i and d i are the coefficients of Eq. (13) which are listed in Table 6.…”

“…CO 2 solubility in pure water is 0.035 at 363.15 K and 10.00 MPa provided by National Institute of Standards and Technology. Li et al [13] reported the CO 2 mass fraction in Weyburn brine was 0.0339 at 332.15 K and 10.38 MPa. And Yan et al [16] measured that the CO 2 solubility was 0.0292 at 373.2 K, 10.00 MPa in 1 mol/kg NaCl brine.…”

“…The experimental results revealed that the density difference between CO 2 +seawater and pure seawater is linearly proportional to the CO 2 mass fraction and independent on pressure, temperature, and salinity. Densities of deionized water and Weyburn -Formation brine were obtained for both the saturated and unsaturated CO 2 solution in the aqueous phase by Li et al [13] at 332.15 K and pressures up to 29 MPa. The measured density of aqueous CO 2 solution was correlated as a function of CO 2 concentration and pressure.…”

Dissolution Trapping of Carbon Dioxide in Reservoir Formation Brine – A Carbon Storage Mechanism

“…Three experimentally measured points at CCS pressure conditions are also added to the graph. show experimental data points measured by Nighswander et al (1989), Li et al (2004) and Kiepe et al (2002) Moreover, the type of dissolved salt has an influence on CO 2 solubility. Yasunishi and Yoshda (1979) studied CO 2 solubilites at atmospheric pressure in a wide variety of salt solutions, these salts included NaCl, KCl, Na 2 SO 4 , MgCl 2 , CaCl 2 , K 2 SO 4 , MgSO 4 , BaCl 2 , AlCl 3 , Al 2 (SO 4 ) 3 among others.…”

Effects of ultrasonic waves on carbon dioxide solubility in brine at different pressures and temperatures

“…Thereafter, other measurement methods were used to investigate the solubility of CO 2 in water at different pressure and temperature conditions (King et al 1992;Bamberger et al 2000). To date, the solubility of CO 2 has been studied by many researchers over a wide range of salinity, temperature and pressure conditions (Rumpf et al 1994;Koschel et al 2006;Li et al 2004;ElMaghraby et al 2012;Mao et al 2013;Shedid and Adel 2013;among others).…”