Articles | Volume 62
30 Jan 2024
 | 30 Jan 2024

Multi-salinity core flooding study in clay-bearing sandstones, a contribution to geothermal reservoir characterisation

Daniela Navarro-Perez, Quentin Fisher, Samuel Allshorn, Carlos Grattoni, and Piroska Lorinczi

Cited articles

Allaby, M.: A dictionary of plant sciences, 4th edn., Oxford University Press, Oxford, ISBN 9780191871665, 2019. 
Amaefule, J. O., Wolfe, K., Walls, J. D., Ajufo, A. O., and Peterson, E.: Laboratory determination of effective liquid permeability in low-quality reservoir rocks by the pulse decay technique, 56th California Regional Meeting of the Society of Petroleum Engineers, Oakland, California, 2–4 April, SPE-15149,, 1986. 
Archie, G. E.: The electrical resistivity log as an aid in determining some reservoir characteristics, Transactions AIME, 146, 54–67, 1942. 
Baptist, P. C. and Sweeny, S. A.: The effect of clays on the permeability of reservoir sands to waters of different saline contents, Clays and Clay Miner., 3, 505–515, 1954. 
Bush, D. C. and Jenkins, R. E.: Proper hydration of clays for rock property determination, J. Pet. Technol., 22, 800–804,, 1970. 
Short summary
A multi-salinity experiment was conducted in three tight clay-bearing (kaolinite, chlorite, and glauconite) sandstones to study the impact of clay on their petrophysical properties. Chlorite sandstone presented higher electrochemical interaction, followed by glauconite and kaolinite. In the geothermal context, this investigation highlights the importance of ensuring that the correct fluid chemistry is used in clay-bearing geothermal reservoirs.