Enhanced Oil Recovery Surfactant Microemulsion
Enhanced oil recovery (EOR) surfactant microemulsion is a tailored blend of anionic and non-ionic surfactants formulated to achieve ultra-low interfacial tension (IFT) between crude oil and brine, mobilizing residual oil in depleted reservoirs. It reduces oil-water IFT to below 10⁻³ mN/m, enabling displacement of trapped oil from pore spaces inaccessible to conventional waterflooding. Optimized for specific crude oil types and reservoir salinity conditions.
Technical Specifications
| appearance | Clear to slightly hazy liquid |
| active content (%) | ≥30 |
| phase behavior type | Winsor Type III microemulsion |
| IFT against test crude (mN/m) | ≤10⁻² |
| optimal salinity range (g/L NaCl) | 10–100 |
Applications
- Chemical EOR surfactant flooding in depleted reservoirs
- Residual oil mobilization after waterflooding
- Sandstone and carbonate reservoir EOR
- Surfactant-polymer flooding (SP flooding)
- Alkaline-surfactant-polymer (ASP) flooding component
Key Features
- Ultra-low IFT (≤10⁻² mN/m) for effective residual oil mobilization
- Formulated for specific crude oil type and reservoir salinity
- Compatible with polymer flooding for combined SP/ASP systems
- Customizable HLB for optimal performance in target reservoir conditions
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