Simulations of the Impact of Co-injected Gases on CO2 Storage, the SIGARRR Project: First Results on Water-gas Interactions Modeling

Abstract

When capturing CO 2 , the collected gas mixture can vary considerably both qualitatively and quantitatively, based on the CO 2 origin, the capture process and the industrial sector. Co-injected with CO 2 , these impurities might be an issue in case of leakage but may also impact the subsurface storage. Operators of the whole CCS chain are therefore waiting for recommendations in terms of admissible concentrations while regulators are waiting for tools allowing them to formulate these recommendations. The SIGARRR project aims at proposing accurate reactive-transport simulations to model the long-term behavior of CO 2 and its coinjected gases within storage sites focusing on the reactivity with reservoirs and the possible inferences on the environment. The paper presents first numerical results on water-gas equilibriums in agreement with experiments.

Chemoinformatics at IFP Energies Nouvelles: Applications in the Fields of Energy, Transport, and Environment

“…Similarly, numerical simulations are interesting tools when the considered molecules are toxic for human, which is typically the case of systems containing H 2 S . In numerous studies we have reported the use of molecular simulation techniques to obtain pseudo experimental data for gas mixtures . In these studies, simulated vapour‐liquid equilibrium data were compared to corresponding experimental data points, and scaling laws together with additional molecular simulation results were used to calculate critical point coordinates .…”

6. Multiphase Multicomponent Reactive Transport and Flow Modeling

“…Søreide and Whitson (1992) adapted the Peng-Robinson EOS (Peng and Robinson 1976); Duan and Sun (2003) derived a virial EOS; and Spycher et al (2003) employed a cubic EOS (Redlich and Kwong 1949). Various geochemical solvers were recently developed with specific modules to incorporate the cubic EOS to address non-ideal gas phases at high pressures and temperatures (Appelo et al 2014;Corvisier et al 2014;Leal et al 2014). The phase equilibrium is presented below.…”

“…The classic cubic EOS formulation and mixing rule are general, i.e., applicable to every compound. Their ability to accurately represent the CO 2 -H 2 O and CO 2 -H 2 O-NaCl systems was demonstrated (Spycher et al 2003;Spycher and Pruess 2005;Corvisier et al 2014Corvisier et al , 2017Hajiw et al 2018), in addition to other systems that include various compounds and gaseous mixtures. A comparison between experimental data and several other methods yielded good results (Hajiw et al 2018).…”

“…• Chess (van der Lee 2009;Corvisier et al 2013Corvisier et al , 2014Corvisier et al , 2017 using the Peng-Robinson EOS, and the SIT model for the electrolyte.…”

“…Over the last four decades, numerous approaches have been developed and tested with global implicit or sequential iterative numerical methods (Peszynska and Sun 2002;Nghiem et al 2004;Hao et al 2012;Fan et al 2012;Wei 2012;Wheeler et al 2012;Xu et al 2012;Nardi et al 2014;Steefel et al 2014;Hron et al 2015;Parkhurst and Wissmeier 2015;Ahusborde and El Ossmani 2017;Sin et al 2017a;Brunner and Knabner 2019). A range of multiphase multicomponent flow and transport solvers (e.g., White et al 2012;Xu et al 2014;Sin et al 2017a;Voskov 2017) and geochemical solvers (e.g., Appelo et al 2014;Corvisier et al 2014;Leal et al 2014) were recently developed to model CO 2 geological sequestration systems, among other applications. In this paper, a detailed state-of-the-art review focused on coupling issues is presented, and several recommendations are provided for future developments.…”