Full text loading...
-
The Hybrid Impact of Smart Water and Silica Nanoparticle on Oil Recovery from arbonate Reservoirs
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 82nd EAGE Annual Conference & Exhibition, Oct 2021, Volume 2021, p.1 - 5
Abstract
Enhanced Oil Recovery (EOR) from carbonate reservoirs can be improved by changing surface rock wettability. The positive charge of carbonate rocks minerals tends to adsorb the carboxylic acid group of crude oil. Therefore, the initial wettability of this rock is slightly to strongly oil-wet state. Recently, using Smart Water (SW) has been grown more attention from scholars as an environmentally friendly and cost-effective method for EOR. Additionally, nanoparticle suspensions are considered as an effective agent for wettability alteration of carbonate rock surface. In this study, the hybrid impact of SW and silica nanoparticle on oil recovery from the calcite rock surface was investigated. To do so, dynamic contact angle measurement along with disjoining pressure isotherm analysis were performed. The results of contact angle measurements confirmed the effectiveness of this new hybrid method. Comparing different concentration of silica nanoparticles suspension emphasized that the rate of changing wettability toward water-wet was decreased by increasing amount of silica nanoparticles. Additionally, zeta potential measurements indicated that the effect of added silica nanoparticles on calcite/nanofluid interface was higher than oil/ nanofluid interface. Finally, water film thickness and the peak of the disjoining pressure isotherm curve approved the results of contact angle qualitatively.