Investigating the effect of nano-silica on efficiency of the foam in enhanced oil recovery |
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Authors: | Seyyed Ahmadreza Amirsadat Babak Moradi Ali Zeinolabedini Hezave Siamak Najimi Mehdi Hojjat Farsangi |
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Affiliation: | 1.Department of Petroleum Engineering, Science and Research Branch,Islamic Azad University,Tehran,Iran;2.School of Chemical Engineering, Faculty of Engineering,University of Tehran,Tehran,Iran;3.National Iranian Oil Company,Tehran,Iran;4.Fanavari Atiyeh Pouyandegan Exir Company,Incubation Centre of Science and Technology Park,Arak,Iran |
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Abstract: | Due to the vast production of crude oil and consequent pressure drops through the reservoirs, secondary and tertiary oil recovery processes are highly necessary to recover the trapped oil. Among the different tertiary oil recovery processes, foam injection is one of the most newly proposed methods. In this regard, in the current investigation, foam solution is prepared using formation brine, C19TAB surfactant and air concomitant with nano-silica (SiO2) as foam stabilizer and mobility controller. The measurements revealed that using the surfactant-nano SiO2 foam solution not only leads to formation of stable foam, but also can reduce the interfacial tension mostly considered as an effective parameter for higher oil recovery. Finally, the results demonstrate that there is a good chance of reducing the mobility ratio from 1.12 for formation brine and reservoir oil to 0.845 for foam solution prepared by nanoparticles. |
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