Print Email Facebook Twitter Effect of Gas Composition on Surfactant Injectivity in a Surfactant-Alternating-Gas Foam Process Title Effect of Gas Composition on Surfactant Injectivity in a Surfactant-Alternating-Gas Foam Process Author Gong, J. (TU Delft Reservoir Engineering; Hohai University) Wang, Yuan (Hohai University) Tewari, Raj Deo (Petronas Research) Kamarul Bahrim, Ridhwan Zhafri B. (Petronas Research) Rossen, W.R. (TU Delft Atmospheric Remote Sensing) Date 2023 Abstract Aqueous foam is a dispersion of gas in liquid, where the liquid acts as the continuous phase and the gas is separated by thin liquid films stabilized by a surfactant. Foam injection is a widely used technique in various applications, including CO2 sequestration, enhanced oil recovery, soil remediation, etc. Surfactant-alternating-gas (SAG) is a preferred approach for foam injection, and injectivity plays a vital role in determining the efficiency of the SAG process. Different gases can be applied depending on the process requirements and availability. However, the underlying mechanisms by which gas composition impacts injectivity are not yet fully understood. In this work, the effect of gas composition on fluid behavior and injectivity in a SAG process was investigated using three gases: N2, CO2, and Kr. Our observations revealed that gas solubility in liquid was key for the formation and evolution of liquid fingers, and therefore was very important for liquid injectivity. A lower gas solubility in liquid led to a slower increase in surfactant solution injectivity. In addition, the development of surfactant solution injectivity took significantly longer when the surfactant solution was partially pre-saturated compared to when it was unsaturated. Additionally, the propagation of the collapsed-foam bank during gas injection was accelerated when the gas had a greater solubility in water. Subject foamsurfactant-alternating-gasinjectivitygas compositionsolubility To reference this document use: http://resolver.tudelft.nl/uuid:822e124b-702f-4773-b760-d8ed7432d182 DOI https://doi.org/10.3390/molecules29010100 ISSN 1420-3049 Source Molecules: a journal of synthetic organic and natural product chemistry, 29 (1) Part of collection Institutional Repository Document type journal article Rights © 2023 J. Gong, Yuan Wang, Raj Deo Tewari, Ridhwan Zhafri B. Kamarul Bahrim, W.R. Rossen Files PDF molecules_29_00100_v2.pdf 3.18 MB Close viewer /islandora/object/uuid:822e124b-702f-4773-b760-d8ed7432d182/datastream/OBJ/view