ArticleScientific reports2025
A comparative study of the rheological and adsorption behaviors of bio-and synthetic polymers for enhanced oil recovery.
Article in Scientific reports, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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1 citing paper in PubMed.
- Synthesis and Properties of Fluorinated Hydrophobically Associating Polymers.Materials (Basel, Switzerland) · 2026Article
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4 authors.
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Abstract
This study investigates Basil Seed Gum (BSG), a naturally derived biopolymer, for chemical enhanced oil recovery (CEOR) under high-temperature/high-salinity conditions. BSG, extracted from Ocimum basilicum L., was benchmarked against partially hydrolyzed polyacrylamide (HPAM), xanthan gum (XGU), and guar gum (GGU) via rheological, Fourier-transform infrared (FTIR), adsorption, and core flooding tests. Rheological results confirmed pronounced shear-thinning behavior, viscosity retention up to 100 °C, and tolerance to 100,000 ppm NaCl, with performance comparable to XGU and superior to HPAM and GGU. Adsorption experiments on sandstone indicated lower maximum adsorption for BSG (~ 0.80 mg/g) compared to HPAM (> 1.40 mg/g), especially at high salinity. Modeling showed the Redlich-Peterson isotherm provided the best fit (R² = 0.9958), indicating mixed adsorption mechanisms. In core flooding, seawater injection recovered 30.2% of OOIP, with water breakthrough at 0.50 PV. Subsequent BSG polymer flooding increased recovery to 58%, and chase brine raised final recovery to 72.1%, achieving an incremental oil recovery of 41.9% over seawater flooding alone. Findings suggest BSG offers a combination of thermal/salinity stability, low rock adsorption, and notable recovery gains, supporting its suitability as a natural polymer alternative in CEOR projects for challenging reservoirs.
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