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Investigation on the stability of mixed AlOOH/SiO2 aqueous dispersions and their application to stabilize Pickering emulsions in the presence of TX-100 and enhance oil recovery.
- Source :
-
Colloids & Surfaces A: Physicochemical & Engineering Aspects . Dec2021, Vol. 630, pN.PAG-N.PAG. 1p. - Publication Year :
- 2021
-
Abstract
- Both negatively charged SiO 2 nanoparticle and positively charged AlOOH nanoparticle have been widely used in various fields, including enhanced oil recovery (EOR). In this study, the mixed binary AlOOH/SiO 2 nanoparticle (MBN) systems are constructed and firstly employed in EOR. The measurements of zeta potential and Z-average diameter indicate that the stable MBN aqueous dispersion could be obtained by controlling AlOOH/SiO 2 mass ratios, which is quantificationally confirmed via the e-DLVO theory. Then the ternary TX-100-AlOOH-SiO 2 (TX-A-S) system exhibits the great ability to stabilize the emulsion at the much low nanoparticle concentration (0.15 wt% in total). The emulsion stability is further evaluated in the harsh conditions (high shear, temperature and electrolyte concentration). Moreover, core flooding and microscopic visualization experiments reflect the TX-A-S stabilized emulsion can dramatically enhance tertiary oil recovery (~23% of initial oil in place), which should be attributed to the high improvement of both displacement and sweep efficiency. [Display omitted] [ABSTRACT FROM AUTHOR]
- Subjects :
- *ENHANCED oil recovery
*DISPERSION (Chemistry)
*ZETA potential
Subjects
Details
- Language :
- English
- ISSN :
- 09277757
- Volume :
- 630
- Database :
- Academic Search Index
- Journal :
- Colloids & Surfaces A: Physicochemical & Engineering Aspects
- Publication Type :
- Academic Journal
- Accession number :
- 153173052
- Full Text :
- https://doi.org/10.1016/j.colsurfa.2021.127595