Effect of temperature and SiO2 nanoparticle size on wettability alteration of oil-wet calcite
Embargo Lift Date
MetadataShow full item record
Nanofluid treatment of oil reservoirs is being developed to enhance oil recovery and increase residual trapping capacities of CO 2 at the reservoir scale. Recent studies have demonstrated good potential for silica nanoparticles for enhanced oil recovery (EOR) at ambient conditions. Nanofluid composition and exposure time have shown significant effects on the efficiency of EOR. However, there is a serious lack of information regarding the influence of temperature on nanofluid performance; thus the effects of temperature, exposure time and particle size on wettability alteration of oil-wet calcite surface were comprehensively investigated; moreover, the stability of the nanofluids was examined. We found that nanofluid treatment is more efficient at elevated temperatures, while nanoparticle size had no influence. Mechanistically most nanoparticles were irreversibly adsorbed by the calcite surface. We conclude that such nano-formulations are potentially useful EOR agents and may improve the efficiency of CO 2 -storage even at higher reservoir temperatures.
Showing items related by title, author, creator and subject.
Silica Nanofluids in an Oilfield Polymer Polyacrylamide: Interfacial Properties, Wettability Alteration, and Applications for Chemical Enhanced Oil RecoverySharma, T.; Iglauer, Stefan; Sangwai, J. (2016)Oil production from matured crude oil reservoirs is still associated with low recovery factors. Chemical enhanced oil recovery (EOR) is one of the techniques which can significantly improve the recovery factor of the ...
Impact of nanoparticles on the CO<inf>2</inf>-brine interfacial tension at high pressure and temperatureAl-Anssari, S.; Barifcani, Ahmed; Keshavarz, A.; Iglauer, Stefan (2018)© 2018 Elsevier Inc. Hypothesis: Nanofluid flooding has been identified as a promising method for enhanced oil recovery (EOR) and improved Carbon geo-sequestration (CGS). However, it is unclear how nanoparticles (NPs) ...
Al-Anssari, S.; Arif, M.; Wang, Shaobin; Barifcani, Ahmed; Lebedev, M.; Iglauer, Stefan (2018)© 2017 Elsevier Ltd Nanofluids, liquid suspensions of nanoparticles (Np), are an effective agent to alter the wettability of oil-wet reservoirs to water-wet thus promoting hydrocarbon recovery. It can also have an application ...