ArticleScientific reports2025
Enhanced oil recovery from sandstone reservoir using cationic hyperbranched polyamidoamine dendrimer surfactant flooding under real reservoir conditions.
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 3 papers.
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Who cites it
3 citing papers in PubMed.
- Article
- Synergistic Mechanisms of Surfactants and Monovalent Ions for Enhanced Oil Recovery Through Interfacial Properties and Microfluidic Study.Gels (Basel, Switzerland) · 2026Article
- A Review of Nanomaterials in Heavy-Oil Viscosity Reduction: The Transition from Thermal Recovery to Cold Recovery.Nanomaterials (Basel, Switzerland) · 2026Review
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Authors and funding
5 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
This study investigates the application of a synthesized cationic hyperbranched polyamidoamine (PAMAM) dendrimer surfactant (G2-C12) as a novel chemical agent for enhanced oil recovery (EOR) in sandstone reservoirs under realistic high-salinity and high-temperature conditions. The dendrimer was synthesized via a divergent approach involving Michael addition, amidation, and quaternization, yielding a structurally defined amphiphilic macromolecule. Its performance was evaluated through interfacial tension (IFT) measurements, salinity-dependent behavior, wettability alteration tests, and core flooding experiments. The surfactant reduced IFT from 27 mN/m to 5 mN/m at 2000 ppm, which was identified as the critical micelle concentration (CMC). Contact angle measurements confirmed a significant shift from oil-wet to strongly water-wet conditions (10.87°–34.57°). Additional salinity tests established the optimal brine strength, while core flooding results demonstrated an incremental oil recovery of 29.09% at reservoir-representative conditions. These findings underscore the dendrimer’s dual-function mechanism, operational stability, and strong potential as a high-performance EOR surfactant under challenging field environments.
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