Interfacial tension between CO2 and brine (NaCl+CaCl2) at elevated pressures and temperatures: The additive effect of different salts

Measurement and modelling of interfacial tension in methane/water and methane/brine systems at reservoir conditions

“…Similar to other gas-water systems [5,8,[10][11][12][13][14][15][16][17][18][19], the addition of salt resulted in a general increase of the interfacial tension values over the pressures and temperatures considered, as depicted in Figure 8. Overall, the presence of 5 wt% and 10 wt% NaCl resulted in an average increase of the IFT in 1.4 mN.m -1 and 4.1 mN.m -1 , respectively, when compared to the methanewater IFT.…”

Pore-lining phases and capillary breakthrough pressure of mudstone caprocks: Sealing efficiency of geologic CO2 storage sites

“…1). Some researchers (e.g., Massoudi and King, 1975;Chalbaud et al, 2009;Aggelopoulos et al, 2010Aggelopoulos et al, , 2011 have observed that ionic strength causes a constant shift in surface tension, whereas the shift is only weakly cross-correlated with pressure and temperature. We used linear regression to interpolate via expansions of the IFT around the conditions of CO 2 storage (up to cubic in pressure, temperature, and molar ionic strength) based on previously collected data (Chiquet et al, 2007b;Bachu and Bennion, 2009;Chalbaud et al, 2009).…”

Estimation of CO2–brine interfacial tension using an artificial neural network

“…In this study, a total of 1716 experimental CO 2 -brine IFT data sets (see Appendix A) were acquired from previous studies [4,5,[7][8][9][10][11][12][13][14][15][16][17][18][19]35] and utilized for developing the ANN model. These data were obtained from pendant drop experiments and consist of both pure and impure CO 2 .…”

“…Numerous studies have been conducted to obtain CO 2 -water IFT data by carrying out laboratory measurements [5,[7][8][9][10][11][12][13][14][15][16][17][18][19]. Among these experimental studies, pendant drop and capillary rise methods are two techniques commonly used for measuring CO 2 -brine IFT at high pressures and elevated temperatures [14].…”