SYNTECH

Prepared with Sodium Methallyl Sulfonate (SMAS), cross-linked polymer gels feature outstanding thermal-salt stability, good deformability and strong shear resistance. They can smoothly migrate deep into oil reservoirs instead of accumulating near wells, maintain stable plugging strength underground, and serve as ideal in-depth profile control agents in late water flooding.

1. Better temperature and salt resistance for deep reservoir adaptationSMAS-containing gels possess stable molecular structure and strong ion tolerance. They are not prone to thermal degradation and ion-induced shrinkage in high-temperature high-salinity deep formation water, maintaining complete gel network structure for long-term plugging performance. Conventional polyacrylamide gels easily lose strength and collapse under harsh reservoir conditions.
2. Moderate gel strength and favorable deep migration abilitySMAS cross-linked gels have proper viscoelasticity and deformability. They can deform and pass through near-wellbore high-permeability channels smoothly, migrate deeply into reservoir interior, and achieve far-distance in-depth plugging. Ordinary PAM gels are too rigid, easily stay near injection wells and fail to reach deep formations.
3. Strong anti-shearing performance avoids gel fragmentationThe steric hindrance structure of Sodium Methallyl Sulfonate enhances the overall toughness of gel network. It resists shear damage during injection and seepage, will not break into fragments in stratum flow field, and maintains integrated plugging effect after arriving at target zones.
4. Weak adsorption reduces near-well retention lossSMAS functional groups adjust interfacial properties, making the gel have moderate rock surface adsorption capacity. It reduces excessive retention near wellbore, ensures more gel agents migrate to deep dominant flow channels, and improves effective utilization rate of profile control agents.
5. Long-term stability prolongs effective profile control periodIt resists water dilution, chemical erosion and microbial degradation in formation water, slowly expands and stably blocks high-permeability thief zones for a longer time. It effectively balances water injection profile, slows down water breakthrough and enhances swept volume, which outperforms conventional PAM gels with short valid period.