Print Email Facebook Twitter Liquid injectivity in a SAG foam process Title Liquid injectivity in a SAG foam process: Effect of permeability Author Gong, J. (TU Delft Reservoir Engineering; Hohai University) Wang, Yuan (Hohai University) Kamarul Bahrim, Ridhwan Zhafri B. (Petronas Research) Tewari, Raj Deo (Petronas Research) Mahamad Amir, Mohammad Iqbal (Petronas Research) Farajzadeh, R. (TU Delft Reservoir Engineering; Shell Global Solutions International B.V.) Rossen, W.R. (TU Delft Reservoir Engineering) Date 2024 Abstract Foam is utilized in enhanced oil recovery and CO2 sequestration. Surfactant-alternating-gas (SAG) is a preferred approach for placing foam into reservoirs, due to it enhances gas injection and minimizes corrosion in facilities. Our previous studies with similar permeability cores show that during SAG injection, several banks occupy the area near the well where fluid exhibits distinct behaviour. However, underground reservoirs are heterogeneous, often layered. It is crucial to understand the effect of permeability on fluid behaviour and injectivity in a SAG process. In this work, coreflood experiments are conducted in cores with permeabilities ranging from 16 to 2300 mD. We observe the same sequence of banks in cores with different permeabilities. However, the speed at which banks propagate and their overall mobility can vary depending on permeability. At higher permeabilities, the gas-dissolution bank and the forced-imbibition bank progress more rapidly during liquid injection. The total mobilities of both banks decrease with permeability. By utilizing a bank-propagation model, we scale up our experimental findings and compare them to results obtained using the Peaceman equation. Our findings reveal that the liquid injectivity in a SAG foam process is misestimated by conventional simulators based on the Peaceman equation. The lower the formation permeability, the greater the error. Subject Enhanced oil recoveryFoamInjectivityPermeabilitySurfactant-alternating-gas To reference this document use: http://resolver.tudelft.nl/uuid:86377084-00c8-4888-a55d-3c433a016262 DOI https://doi.org/10.1016/j.petsci.2023.10.010 ISSN 1672-5107 Source Petroleum Science, 21 (1), 302-314 Part of collection Institutional Repository Document type journal article Rights © 2024 J. Gong, Yuan Wang, Ridhwan Zhafri B. Kamarul Bahrim, Raj Deo Tewari, Mohammad Iqbal Mahamad Amir, R. Farajzadeh, W.R. Rossen Files PDF 1-s2.0-S1995822623002856-main.pdf 3.73 MB Close viewer /islandora/object/uuid:86377084-00c8-4888-a55d-3c433a016262/datastream/OBJ/view