Product Overview
Unlike standard HPAM, this temperature-resistant grade incorporates thermally stable linkages and optimized hydrolysis levels to mitigate viscosity loss at elevated temperatures. It is designed for use in reservoir environments where fluids may reach 80–180°C, such as steam flooding or cyclical thermal recovery.
Key Performance Advantages
- Maintains viscosity at high temperatures (up to 120–150°C depending on grade).
- Resistant to thermal degradation and hydrolysis-induced viscosity collapse.
- Compatible with moderate salinity and mineralized injection waters.
- Improved sweep efficiency in thermal recovery operations.
- Enhanced molecular resilience during mechanical and thermal stress.
Applications in Thermal EOR
- Steam flooding — improves vertical and areal conformance.
- SAGD (Steam Assisted Gravity Drainage) chemical-assisted mobility control.
- Cyclic steam stimulation for enhanced viscosity modification.
- High-temperature polymer flooding in deeper or geothermal-influenced reservoirs.
- Mobility ratio correction where steam front destabilizes traditional water-phase control.
Thermal-Resistant Functionality
Temperature-resistant HPAM is engineered to withstand hydrolysis and free-radical degradation that typically occur at high temperature. The polymer maintains longer molecular chains, offering:
- Higher viscosity retention after prolonged heating.
- Reduced breakdown under steam or cyclic thermal shock.
- Sustained elasticity aiding in pore-scale displacement efficiency.
- Greater mobility control across a range of thermal cycles.
Field performance depends on temperature exposure, salinity, shear environment, and polymer concentration. Lab thermal-aging tests are strongly recommended.
Technical Specifications (Typical)
| Property | Value |
|---|---|
| Appearance | Off-white granular powder |
| Molecular Weight | High; typically 10–25 million |
| Thermal Resistance | 80–150°C depending on formulation |
| Ionic Type | Anionic, thermally modified |
| Solid Content | ≥ 89% |
| Recommended Dosage | 0.15% – 0.6% |
| pH (1% solution) | 6 – 8 |
| Particle Size | 20–100 mesh |
| Packaging | 25 kg bags or 750 kg jumbo bags |
Hydration & Preparation
Hydrating thermal-resistant HPAM requires controlled shear and appropriate preparation methods to preserve molecular weight and achieve target viscosity.
