Investigation of functionalized polyelectrolyte polymer-coated Fe3O4 nanoparticles stabilized in high salinity brine at high temperatures as an EOR agent

Thermosensitive Core–Shell Fe3O4@poly(N-isopropylacrylamide) Nanogels for Enhanced Oil Recovery

“…This is proven by the fact that the obtained XRD pattern of the sample was in good agreement with the characteristic Bragg’s peak of the inverse cubic spinel phase of Fe 3 O 4 in the database (JCPDS card no. 85–1436) and that reported elsewhere. ,,− The results also demonstrated that surface modification of Fe 3 O 4 nanoparticles using PNIPAM does not affect its crystal structure (Figure a). As shown, it is clear that the XRD pattern of the prepared core–shell Fe 3 O 4 @PNIPAM nanogels was found to be very similar to bare Fe 3 O 4 nanoparticles.…”

“…Among different types of surface modifiers, modification of superparamagnetic nanoparticles using polymeric-based materials has been proven to give exceptional results in terms of colloidal stability under the extreme subsurface condition and the ability to improve both secondary and tertiary recovery. For example, Izadi and co-workers have successfully prepared and utilized anionic polymer-citrate-coated Fe 3 O 4 nanoparticles to enhance oil recovery both in sand-pack porous media and carbonated rocks core-flooding setup at high salinity and high temperature . According to the result, it was found that the injection of polymer-modified Fe 3 O 4 nanoparticles was able to improve oil recovery, which was believed to be the result of a significant reduction in IFT and the efficient formation of disjoining pressure.…”

“…For example, Izadi and coworkers have successfully prepared and utilized anionic polymer-citrate-coated Fe 3 O 4 nanoparticles to enhance oil recovery both in sand-pack porous media and carbonated rocks core-flooding setup at high salinity and high temperature. 25 According to the result, it was found that the injection of polymer-modified Fe 3 O 4 nanoparticles was able to improve oil recovery, which was believed to be the result of a significant reduction in IFT and the efficient formation of disjoining pressure. A very similar effect was also observed in another study when Fe 3 O 4 @chitosan nanocomposites were injected during the EOR process.…”

Application of Magnetic and Dielectric Nanofluids for Electromagnetic-Assistance Enhanced Oil Recovery: A Review

“…Recently, Izadi et al (2019) [104] investigated the influence of polymer-citrate-coated Fe 3 O 4 NPs using reservoir temperatures and pressure at high salinity for EOR. The salinity was up to 256,000 ppm at a temperature of 85 • C and pressure of 2700 psi; moreover, the experiment was conducted by using carbonate rocks and sand-pack as a porous medium during nanofluids suspension.…”

Experimental Investigation of Chemical Flooding Using Nanoparticles and Polymer on Displacement of Crude Oil for Enhanced Oil Recovery

“…Indeed, it has also been observed that the adsorption efficiency and recovery performance of nanofluids with the use of fumed silica nanoparticles are better than with colloidal silica nanoparticles [34]. e nanoparticles have many advantages over micro/ macroparticles in EOR, such as (a) large surface area, (b) smaller size, (c) strong tendency to make bonds with functional groups, and (d) easily move into tiny pores of rock [35]. In addition, it has a great ability to control mobility using nanoparticles solutions along with altering rock wettability and interfacial tension (IFT) to increase the oil recovery by decreasing the viscosity of displacing fluid.…”