Assessment of wettability and rock-fluid interfacial tension of caprock: Implications for hydrogen and carbon dioxide geo-storage
Muhammad Ali, Bin Pan, Nurudeen Yekeen, Sarmad Al‐Anssari, Amer Alanazi, Alireza Keshavarz, Stefan Iglauer, Hussein Hoteit
Abstract
The equilibrium contact angle (q E ) increases with pressure and organic concentration but decreases with temperature. The solid-gas interfacial tension (g SG ) decreases with pressure and organic concentration but increases with temperature. The solid-liquid interfacial tension (g SL ) and q E decreases, whereas g SG increases with increasing alumina nanofluid concentration. Mica hydrogen wettability is less than mica CO 2 wettability in all physio-thermal conditions.
Topics & Concepts
CaprockWettingNanofluidSurface tensionCarbon dioxideMaterials scienceHydrogen storageContact angleHydrogenMicaChemical engineeringCarbon fibersChemistryComposite materialPetroleum engineeringThermodynamicsNanoparticleGeologyNanotechnologyOrganic chemistryEngineeringComposite numberPhysicsCO2 Sequestration and Geologic InteractionsHydraulic Fracturing and Reservoir AnalysisEnhanced Oil Recovery Techniques