Experimental Study on the Enhanced Oil Recovery by in Situ Foam Formulation

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dc.contributor.authorHailong, Chen
dc.contributor.authorLi, Zhaomin
dc.contributor.authorWang, Fei
dc.contributor.authorWanambwa, Silagi
dc.contributor.authorLu, Teng
dc.date.accessioned2022-11-02T18:44:20Z
dc.date.available2022-11-02T18:44:20Z
dc.date.issued2020
dc.description.abstractIn situ CO2 foams (ISCF) are studied systematically by combining in situ CO2 gas reactants (carbonate anhydrous, hydrochloric acid) and bio-based surfactant. Sandpack flooding experiments at 60°C along with PVT experiments were carried out to analyze the oil displacement mechanisms. The results showed that ISCF could increase oil recovery from heterogeneous multilayer formation of permeability ratio over 6, and displacement efficiency increased with the injection volume increased before the injection of 1 PV. The incremental oil recovery by ISCF was much greater than that of conventional foam or in situ CO2 (ISC) without foam under the same injection conditions. The generated CO2 foam could reduce the interfacial tension between displacement phase and displaced phase effectively which contributed to the great increase in capillary number. The CO2 dissolution greatly reduced the viscosity of crude oil, and the highest viscosity reduction rate at 60°C could be as high as 98%. The Ca2+ concentration of produced liquids analysis revealed the ISCF could distribute intelligently the acid in heterogeneous formations.en_US
dc.identifier.citationChen, H., Li, Z., Wang, F., Li, A., Wanambwa, S., & Lu, T. (2020). Experimental study on the enhanced oil recovery by in situ foam formulation. Energy Science & Engineering, 8(4), 1092-1103.https://doi.org/10.1002/ese3.570en_US
dc.identifier.urihttps://nru.uncst.go.ug/handle/123456789/5140
dc.language.isoenen_US
dc.publisherEnergy Science & Engineeringen_US
dc.subjectin situ foam, intelligent acidification, interfacial tension reduction, viscosity reductionen_US
dc.titleExperimental Study on the Enhanced Oil Recovery by in Situ Foam Formulationen_US
dc.typeArticleen_US
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