Enhancing oil recovery of sandstone core samples using an innovative surfactant blend fighting severe reservoir conditions

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This research demonstrates how a novel surfactant blend improves oil recovery in sandstone, reducing interfacial tension and modifying wettability.

The surfactant blend significantly improved oil recovery compared to NPE alone, leading to a yield of 38.1% versus 30%.
Interfacial tension measurements showed a reduction from 12 mN/m for NPE to 8.5 mN/m for the blend, indicating enhanced efficiency.
Testing on sandstone core samples revealed that the blend modified rock wettability, resulting in stronger water-wet characteristics.
These findings suggest the surfactant blend could be a cost-effective solution for enhancing oil recovery in challenging reservoir conditions.

Abou-alfitooh et al. (2025) studied this question.

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This research demonstrates how a novel surfactant blend improves oil recovery in sandstone, reducing interfacial tension and modifying wettability.