Hydrolyzed Polyacrylamide (HPAM) EOR Polymer
Hydrolyzed Polyacrylamide (HPAM) is the world's most widely used polymer for chemical enhanced oil recovery (EOR), providing mobility control in waterfloods by increasing the viscosity of the injected water phase. At typical field concentrations of 500–2000 ppm, it increases water viscosity from 1 to 10–40 mPa·s, improving sweep efficiency and reducing water channeling through high-permeability streaks. Molecular weight grades from 5 to 35 million Daltons are available to match reservoir conditions.
Technical Specifications
| appearance | White to off-white granular powder |
| hydrolysis degree (%) | 25–35 |
| molecular weight (× 10⁶ Da) | 5–35 (grade dependent) |
| dissolution time (min, 1000 ppm) | ≤120 |
| viscosity of 1500 ppm solution (mPa·s, 7.34 s⁻¹) | ≥20 (12×10⁶ Da grade) |
Applications
- Polymer flooding EOR in mature waterfloods
- Mobility control in chemical EOR systems
- ASP (alkaline-surfactant-polymer) flooding component
- Profile modification and conformance control
- Fracturing fluid friction reducer (low-MW grade)
Key Features
- Proven EOR polymer with decades of field deployment worldwide
- Broad molecular weight range to match diverse reservoir permeabilities
- Achieves 10–30% additional oil recovery over conventional waterflooding
- Available in powder and emulsion grades for flexible field preparation
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