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Experimental Investigation of Synergism Between Low Saline Water and Surfactant-Silica Nanoparticle in Enhanced Oil Recovery Processes
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 82nd EAGE Annual Conference & Exhibition, Oct 2021, Volume 2021, p.1 - 5
Abstract
Studies on the nano-particles (NPs) as chemical agents for chemical enhanced oil recovery (CEOR) processes are very limited. The aims of this investigation are fulfilling a gap in the research on NPs-based CEOR processes and showing the possibility to use the NPs as an influential agent on changing the reservoir rock and fluids properties. In this study, silica nano-particle (SN), Sodium Dodecyl Benzene Sulfonate (SDBS) and Hexa decyl trimethlyl ammonium bromide (C19TAB) surfactants were used as chemical agents for CEOR process. According to obtained data from pendant drop interfacial tension (IFT) measurement tests, the optimum concentrations of SN in two different surfactant solutions with low saline water base (LSW) is 0.05 wt%. Total dissolved solids (TDS) of LSW is 1000 ppm which prepared by diluting the formation brine. Furthermore, some sessile drop contact angle measurement experiments were taken for evaluating the impacts of SN on wettability alteration mechanism for sand-stone rock. Finally, some chemical flooding were conducted in glass micromodel system with triangular pattern as dead-end pore by determining the optimum concentrations of SN in surfactant solutions. The recovery factor results showed that LSW+CTAB+SN solution could recover 76% of the original oil in place after 2 pore volume injection.