In this section, you can access to the latest technical information related to the FUTURE project topic.

Rock-fluid interfacial tension at subsurface conditions: Implications for H2, CO2 and natural gas geo-storage

In H2, CO2 and natural gas geo-storage, rock-fluid interfacial tension (?rock?fluid) is a key parameter which influences pore-scale fluid distribution and reservoir-scale gas storage capacity and containment security. However, ?rock?fluid data is seriously lacking because of the inability to measure this parameter experimentally. Therefore herein, a semi-empirical method is used to calculate ?rock?fluid at geo-storage conditions. Additionally, effects of organic acid and silica nanofluid on ?rock?fluid are studied. The following results are obtained. ?rock?gas decreases with pressure, temperature, organic acid concentration and carbon number increase, while ?rock?H2O increases with organic acid concentration and carbon number increase; ?rock?gas first increases and subsequently decreases with silica nanofluid concentration increase, while ?rock?H2O first decreases and then increases with silica nanofluid concentration increase; for same thermo-physical and rock surface chemistry conditions, ?rock?gas follows the order H2?>?CH4?>?CO2. These insights provide pivotal guidance on gas geo-storage and thus aids in the implementation of a more sustainable energy supply chain.

» Author: Bin Pan, Xia Yin, Stefan Iglauer

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