Product Overview
Salt-resistant HPAM combines enhanced molecular stability with controlled hydrolysis to deliver strong viscosity in brines that usually degrade standard polyacrylamides. This makes it suitable for advanced EOR strategies requiring reliable performance in difficult formation waters and highly saline injection systems.
Key Performance Advantages
- Maintains viscosity in high salinity water (>50,000 ppm TDS).
- Enhanced tolerance to Ca²⁺ and Mg²⁺, reducing precipitation or coil shrinkage.
- Suitable for high mineralization reservoirs and offshore brine systems.
- Strong polymer chain stability and minimized mechanical degradation.
- Improved mobility ratio and displacement efficiency in polymer flooding.
Recommended Applications
- Polymer flooding in high salinity reservoirs.
- Mobility control in offshore and high-TDS environments.
- Viscosity enhancement in injection water with divalent ions.
- Water shutoff and conformance improvement projects.
- Produced water conditioning and separation processes.
Functional Mechanism
Traditional HPAM experiences coil contraction in saline environments due to ionic interactions, reducing viscosity. Salt-resistant HPAM incorporates modified molecular architecture that:
- Limits polymer chain collapse under ionic stress.
- Enhances water uptake and hydration even in brine.
- Improves long-term viscosity retention at reservoir temperature.
- Maintains a favorable mobility ratio for efficient oil displacement.
Optimization should be based on formation water analysis, brine compatibility testing, and temperature–viscosity profiling.