ABSTRACT
This work investigates the performance of two numerical solubility models for CO2 dissolution and trapping. Two geological models were developed for Li-Nghiêm’s and Harvey’s solubility models. Visualization of the CO2 plume’s spatial distribution was conducted for 10-year injection period and plume migration monitored for 190 years under natural gradients. Both models successfully simulate the lateral migration of injected CO2 during the injection phase, followed by upward migration due to its lower density relative to formation water. The onset of the solubility trapping mechanism results in a greater concentration of CO2 at the bottom of the aquifer. There was structural trapping during the injection phase, followed by a slight increase and subsequent decline during the post-injection phase due to solubility trapping. Both models predict substantial CO2 solubility in water during injection, but Li-Nghiêm’s model have higher solubility than Harvey’s model.CO2 solubility trapping mechanisms increased the concentration of CO2 in the brine in the post-injection phase. it is evident that the choice of solubility model impact predictions of CO2 solubility and migration and should be evaluated for any CO2 storage Project. Hence, the selection should consider site-specific geological and fluid conditions.
References
[1] Abas, N., and Khan, N. (2014). Carbon conundrum, climate change, CO2 capture and
consumptions. Journal of CO2 Utilization, 8, 39–48.
[2] Bahadori, A., Vuthaluru, H. B., and Mokhatab, S. (2009). New correlations predict aqueous
solubility and density of carbon dioxide, International Journal of Greenhouse Gas Control, 3, 474–480.
[3] Dejam, M., and Hassanzadeh, H. (2018). The role of natural fractures of finite double-
porosity aquifers on diffusive leakage of brine during geological storage of CO2.
International Journal of Greenhouse Gas Control, 78, 177–197.
[4] Duan, Z., Sun, R., Zhu, C., and Chou, I. M. (2006). An improved model for the calculation of
CO2 solubility in aqueous solutions containing Na+, K+, Ca2+, Mg2+, Cl-, and SO42-. Marine Chemistry, 98, 131–139.
[5] Figueroa, J. D., Fout, T., Plasynski, S., McIlvried, H., and Srivastava, R. D. (2008). Advances
in CO2 capture technology—the US department of energy’s carbon sequestration program, International Journal of Greenhouse Gas Control, 2, 9–20.
[6] Gershenzon, N. I., Ritzi, R. W., Dominic, D. F., Soltanian, M., Mehnert, E., Okwen, R. T.
(2015). Influence of small-scale fluvial architecture on CO2 trapping processes in deep brine reservoirs. Water Resources Research, 51, 8240–8256.
[7] Gershenzon, N. I., Soltanian, M., Ritzi Jr, R. W., and Dominic, D. F. (2014). Influence of
small-scale heterogeneity on CO2 trapping processes in deep saline aquifers. Energy Procedia, 59 166–173.
[8] Harvey, A. H. (1985). The prediction of the solubility of gases in water and in aqueous-
electrolyte solutions. Journal of the Chemical Society, Faraday Transactions 1, 81(4), 717-734.
[9] Harvey, A. H. (1996). Semiempirical correlation for henry’s constants over large temperature
ranges. AIChE Journal, 42(5), 1491–1494.
[10] Harvey, A. H., and Prausnitz, J. M. (1989). Carbon dioxide solubility in aqueous
alkanolamine solutions. Industrial & Engineering Chemistry Research, 28(11), 1703-1710.
[11] Li, Z., & Nghiem, L. D. (2010). Modeling of CO2 solubility in saline water. Energy
Procedia, 4, 5871-5878.
[12] Liu, B., Fu, X., and Li, Z. (2018). Impacts of CO2-brine-rock interaction on sealing
efficiency of sand caprock: a case study of Shihezi formation in Ordos basin. Advances
in Geo-Energy Research, 2, 380–392.
[13] Olajire, A. A. (2018). Recent progress on the nanoparticles-assisted greenhouse carbon
dioxide conversion processes. Journal of CO2 Utilization, 24, 522–547.
[14] Portier, S., and Rochelle, C. (2005). Modelling CO2 solubility in pure water and NaCl-type
waters from 0 to 300 C and from 1 to 300 bar: application to the Utsira Formation at Sleipner. Chemical Geology, 217, 187–199.
[15] Singh, H. (2018). Impact of four different CO2 injection schemes on extent of reservoir
pressure and saturation. Advances in Geo-Energy Research, 2, 305–318.
[16] Soltanian, M. R., Amooie, M. A., Cole, D. R., Graham, D. E., Hosseini, S. A., Hovorka, S.,
Download all article in PDF
