Kinetic Rate of Iron Release During Artificial CO2 Injection in a Shallow Aquifer: Preliminary Results

Limiting the risk inherent to geological CO2 storage: The importance of predicting inorganic and organic chemical species behavior under supercritical CO2 fluid conditions

“…We are not yet in a position to develop reliable predictive models capable of forecasting the behavior of inorganic and organic chemical species under the supercritical CO 2 fluid conditions characteristic of geological storage sites. We lack sufficient field data as well as an in‐depth understanding of the processes in play . In order to develop these models, we need to fully understand the complex processes that control trace metal and organic compound reactive transport.…”

“…We lack suffi cient fi eld data as well as an in-depth understanding of the processes in play. 49 In order to develop these models, we need to fully understand the complex processes that control trace metal and organic compound reactive transport. Th is can be achieved through theoretical and experimental work designed to defi ne and measure pH in deep aqueous solutions • characterized by a high ionic strength (high salinity).…”

Natural Analogues

“…The dissolution of Fe 3+ -bearing oxide and oxy-hydroxide minerals is increasingly appreciated as an important geochemical buffer during the injection of CO 2 into sandstone reservoirs (e.g., Kharaka et al 2006a;Trautz et al 2012;Rillard et al 2013). Elevated concentrations of Fe 2+ have been observed in fluid samples from the Frio-I (Kharaka et al 2006a,b) and Frio-II (Daley et al 2007a,b) CO 2 injection experiments and in numerous CO 2 -EOR projects (e.g., Shevalier et al 2009), within days of the break-through of CO 2 and CO 2 -charged fluids at observation wells (see review by Kampman et al 2013a).…”