Assessment of the oxygen reactivity in a gas storage facility by multiphase reactive transport modeling of field data for air injection into a sandstone reservoir in the Paris Basin, France

Physicochemical and microbiological effects of geological biomethane storage in deep aquifers: introduction of O2 as a cocontaminant

“…The development of these taxonomic groups ( Desulfosporosinus and Acidobacteriae) is not surprising since they are associated with acidic pH conditions. 51,58 Although the pH could not be monitored in this experiment, the work of Sin and her collaborators 25 in another storage aquifer showed that the injection of O 2 and the presence of CO 2 led to an acidification of the formation water due to the dissolution of certain minerals such as pyrite. Slight acidification has previously been shown to be conducive to the biodegradation of BTEX.…”

“…[17][18][19] In UGS, O 2 can also be present as an impurity during CO 2 capture and storage (CCS) 13,18,[20][21][22] and in compressed air for energy storage (CAES). [23][24][25] O 2 can also be intentionally injected for enhancing oil recovery [26][27][28] and for the bioremediation of groundwater. 29,30 O 2 that is injected into deep aquifers not only affects microbial life but also interacts with mineral phases.…”

“…29,30 O 2 that is injected into deep aquifers not only affects microbial life but also interacts with mineral phases. 25 One example is mineral oxidation, which depends on the nature of the solid phase. 9,22,[31][32][33] Recently, a study with 1% O 2 was carried out since it corresponds to the maximum quantity found in biomethane.…”

Multiphase multicomponent reactive transport and flow with HYTEC for gas storage applications

“…These last simulations, even though numerically demanding, show the ability of our approach to model highly coupled physical processes related to complex phase composition such as density driven flow and chromatographic partitioning. HYTEC is now able to simulate realistic scenarios of not only CO2, but also compressed air [9], biomethane and H2 underground storage in various environments (e.g. saline aquifers, salt caverns, basalts...).…”