An Experimental Comparison between Ionic Liquid and Nanofluid Injection in the Nassiriyah Oil Field: Application for Enhanced Oil Recovery)
DOI:
https://doi.org/10.52716/jprs.v15i2.892Keywords:
Nanofluid; Carbon nanoparticles CNPs; Enhanced oil recovery EOR; Ionic liquid (IL); Dodecyl pyridinium chloride.Abstract
Many oil fields worldwide are reaching maturity and have stopped producing oil economically. It is necessary to extract oil from tertiary recovery technologies in addition to primary and secondary stages to meet the growing demand for power worldwide, increasing the price of oil. For this reason, enhanced oil recovery (EOR) will become more critical. A feasible technique to increase oil recovery is to inject chemicals into reservoirs.
The present research investigated the effect of ionic liquid (Dodecyl pyridinium chloride) alone and nanofluid formulations from (50 ppm of carbon nanoparticle CNPs with a range of concentrations of ionic liquid) on the interfacial tension and then application in enhanced oil recovery.
The result shows that the dodecyl pyridinium chloride alters interfacial tension (IFT) from 3.13 to 1.25 dynes/cm at 250 ppm. In contrast, the optimal nanofluid formulation (50 ppm of nanocarbon with 250 ppm of ionic liquid) reduced the surface tension from 55.07 to 39.85 dyne/cm at 25 oC.
Finally, Core-flooding tests were carried out; additional oil recoveries of 5.58% and 20.56% of the original oil in place were achieved after injection 2PV of ionic liquid only and optimum nanofluid formulation at the same flow rate, respectively. At the same time, additional oil recovery was 21.67 % after injection of 4 PV of optimum nanofluid. According to the research, these nanofluids are very promising for EOR.
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