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Abstract

In one embodiment, a method for recovery of an oil from a porous medium comprises contacting the porous medium with an aqueous nanofluid, solubilizing oil from the porous medium via the nanoparticles to form a dispersion comprising the oil and the aqueous nanofluid, and collecting at least some of the dispersion. The aqueous nanofluid may contain a combination of amphiphilic quantum dots and hydrophilic quantum dots, in a continuous phase. At least 90% of the quantum dot nanoparticles may have an aspect ratio of from 1:1 to 1:6. In another embodiment, a method for recovery of an oil from a porous medium includes adding quantum dots to foaming surfactants to enhance foam lamella stability under reservoir conditions and provide conformance and mobility control in porous media and hydraulic fractures.

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First Claim