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- Type of Document: M.Sc. Thesis
- Language: Farsi
- Document No: 41426 (06)
- University: Sharif University of Technology
- Department: Chemical and Petroleum Engineering
- Advisor(s): Alemzadeh, Iran; Vossoughi, Manoochehr
- Abstract:
- After primary and secondary recovery processes more than 50 percent of oil remains in reservoirs. Therefore for more recovery from these reservoirs, methods of enhanced oil recovery should be applied.In this paper the effect of nanoparticles of SiO2 in size of 14 nm, on wettability is investigated. Using this nanoparticle, the wettability of carbonate rock in reservoirs could be changed and alter from oil-wet or mix-wet to water-wet. To assess this, hydrophilic changes of sandstone core and carbonate core are studied using the contact angle test. The same test is done on the carbonate core saturated with brine and oil that had received injection with brine and nanoparticles of SiO2 with two different concentrations. Investigating the results shows that with increasing nanoparticle concentration, the contact angle decreases which is a sign of hydrophilicity increase and results in increase of core’s wettability.In the next stage with comparison of result from contact angle tests, the effect of adding SiO2 nanoparticles on water flooding is studied. For this stage, the recovery level is measured in different states of using .01, 0.05, 0.1, 0.5 and zero concentration of the nanoparticle. The results confirm that using the nanoparticle increases the recovery. Also increasing the nanoparticle concentration up to 0.1 percent increase the recovery but further increase to 0.5 reduces the effect on recovery
- Keywords:
- Water Flooding ; Plug ; Enhanced Oil Recovery ; Wetting ; Nanoparticles
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