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Review on application of nanoparticles for EOR purposes: A critical review of the opportunities and challenges

Chinese Journal of Chemical Engineering 2019年第2期27卷 237-246页

作者： Yousef Kazemzadeh sanaz shojaei Masoud Riazi Mohammad Sharifi Department of Petroleum Engineering Amirkabir University of Technology Tehran Polytechnic Enhanced Oil Recovery (EOR) Research Centre IOR/EOR Research Institute Shiraz University Petroleum Engineering Department School of Chemical and Petroleum Eng. Shiraz University

Nanoparticles have already gained attentions for their countless potential applications in enhanced oil ***-sized particles would help to recover trapped oil by several mechanisms including interfacial tension reduction, impulsive emulsion formation and wettability alteration of porous media. The presence of dispersed nanoparticles in injected fluids would enhance the recovery process through their movement towards oil–water interface. This would cause the interfacial tension to be reduced. In this research, the effects of different types of nanoparticles and different nanoparticle concentrations on EOR processes were investigated. Different flooding experiments were investigated to reveal enhancing oil recovery mechanisms. The results showed that nanoparticles have the ability to reduce the IFT as well as contact angle, making the solid surface to more water wet. As nanoparticle concentration increases more trapped oil was produced mainly due to wettability alteration to water wet and IFT reduction. However, pore blockage was also observed due to adsorption of nanoparticles, a phenomenon which caused the injection pressure to increase. Nonetheless, such higher injection pressure could displace some trapped oil in the small pore channels out of the model. The investigated results gave a clear indication that the EOR potential of nanoparticle fluid is significant.

关键词： Enhance oil recovery Nanofluid injection Nanoparticle Interfacial tension Wettability alteration Pore blockage

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