Enhanced Oil Recovery with Size-Dependent Interactions of Nanoparticles Surface-Modified by Zwitterionic Surfactants
This study reports the size-dependent interactions of silica nanoparticle (NP) dispersions with oil, which facilitate oil recovery from sandstone rock. Herein, we studied various 7–22 nm sized colloidal silica NPs (CSNPs; the colloidal state when dispersed in aqueous solutions) and fumed silica nano...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-08-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/11/16/7184 |
| _version_ | 1797524854364176384 |
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| author | Han Am Son Taehun Lee |
| author_facet | Han Am Son Taehun Lee |
| author_sort | Han Am Son |
| collection | DOAJ |
| description | This study reports the size-dependent interactions of silica nanoparticle (NP) dispersions with oil, which facilitate oil recovery from sandstone rock. Herein, we studied various 7–22 nm sized colloidal silica NPs (CSNPs; the colloidal state when dispersed in aqueous solutions) and fumed silica nanoparticles (FSNPs; the dry powder state). Interfacial tension at the oil-nanofluids interface declined with decreasing NP size in a range from 7 to 22 nm. This is because NP spatial density at the interface increased with smaller particle size, thereby, the interface area per NP decreased to approximately 1/30, and interfacial energy had reduced enough. In addition, smaller NPs more strongly were adsorbed to the rock because of improved diffusion in suspension and increased adsorption density. This caused creating a wedge film between oil and rock, which changed the oil contact angle. Due to this effect, core flooding experiments indicated that oil recovery increased with decreasing particle size. However, FSNP dispersions exhibited low recovery factor because of particle aggregation. This phenomenon may facilitate massive permeability reduction, thus causing oil trapping inside rock pore. We found that both the sizes and types of CSNPs and FSNP affected the Interfacial tension at oil-water interface and rock surface wettability, which influenced ultimate oil recovery. |
| first_indexed | 2024-03-10T09:02:33Z |
| format | Article |
| id | doaj.art-9339e69dab7949bba8fb9fa97167d29b |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T09:02:33Z |
| publishDate | 2021-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-9339e69dab7949bba8fb9fa97167d29b2023-11-22T06:37:54ZengMDPI AGApplied Sciences2076-34172021-08-011116718410.3390/app11167184Enhanced Oil Recovery with Size-Dependent Interactions of Nanoparticles Surface-Modified by Zwitterionic SurfactantsHan Am Son0Taehun Lee1Department of Energy Resources Engineering, Pukyong National University, Busan 48547, KoreaOil and Gas Research Center, Petroleum and Marine Research Division, Korea Institute of Geoscience and Mineral Resources, Daejeon 34132, KoreaThis study reports the size-dependent interactions of silica nanoparticle (NP) dispersions with oil, which facilitate oil recovery from sandstone rock. Herein, we studied various 7–22 nm sized colloidal silica NPs (CSNPs; the colloidal state when dispersed in aqueous solutions) and fumed silica nanoparticles (FSNPs; the dry powder state). Interfacial tension at the oil-nanofluids interface declined with decreasing NP size in a range from 7 to 22 nm. This is because NP spatial density at the interface increased with smaller particle size, thereby, the interface area per NP decreased to approximately 1/30, and interfacial energy had reduced enough. In addition, smaller NPs more strongly were adsorbed to the rock because of improved diffusion in suspension and increased adsorption density. This caused creating a wedge film between oil and rock, which changed the oil contact angle. Due to this effect, core flooding experiments indicated that oil recovery increased with decreasing particle size. However, FSNP dispersions exhibited low recovery factor because of particle aggregation. This phenomenon may facilitate massive permeability reduction, thus causing oil trapping inside rock pore. We found that both the sizes and types of CSNPs and FSNP affected the Interfacial tension at oil-water interface and rock surface wettability, which influenced ultimate oil recovery.https://www.mdpi.com/2076-3417/11/16/7184enhanced oil recoverynanoparticle sizecolloidal silica nanoparticle (CSNP)fumed silica nanoparticle (FSNP) |
| spellingShingle | Han Am Son Taehun Lee Enhanced Oil Recovery with Size-Dependent Interactions of Nanoparticles Surface-Modified by Zwitterionic Surfactants Applied Sciences enhanced oil recovery nanoparticle size colloidal silica nanoparticle (CSNP) fumed silica nanoparticle (FSNP) |
| title | Enhanced Oil Recovery with Size-Dependent Interactions of Nanoparticles Surface-Modified by Zwitterionic Surfactants |
| title_full | Enhanced Oil Recovery with Size-Dependent Interactions of Nanoparticles Surface-Modified by Zwitterionic Surfactants |
| title_fullStr | Enhanced Oil Recovery with Size-Dependent Interactions of Nanoparticles Surface-Modified by Zwitterionic Surfactants |
| title_full_unstemmed | Enhanced Oil Recovery with Size-Dependent Interactions of Nanoparticles Surface-Modified by Zwitterionic Surfactants |
| title_short | Enhanced Oil Recovery with Size-Dependent Interactions of Nanoparticles Surface-Modified by Zwitterionic Surfactants |
| title_sort | enhanced oil recovery with size dependent interactions of nanoparticles surface modified by zwitterionic surfactants |
| topic | enhanced oil recovery nanoparticle size colloidal silica nanoparticle (CSNP) fumed silica nanoparticle (FSNP) |
| url | https://www.mdpi.com/2076-3417/11/16/7184 |
| work_keys_str_mv | AT hanamson enhancedoilrecoverywithsizedependentinteractionsofnanoparticlessurfacemodifiedbyzwitterionicsurfactants AT taehunlee enhancedoilrecoverywithsizedependentinteractionsofnanoparticlessurfacemodifiedbyzwitterionicsurfactants |