low price of cationic polyacrylamide viscosity concentration

low price of cationic polyacrylamide viscosity concentration
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  • Does cationic hydrophobically associating polyacrylamide have good salt resistance?
  • Although it is generally believed that cationic hydrophobically associating polyacrylamide has good salt resistance [ 37, 38, 39 ], in this paper, due to the extremely low polymer concentration, the viscosity of the solution is still greatly reduced.
  • Does high-salinity formation-water affect polyacrylamide viscosity?
  • Polyacrylamides, including partially hydrolyzed polyacrylamide (HPAM), are commonly used for polymer flooding. The soaring demand for polymer flooding has motivated a deeper investigation of the impact of high-salinity formation-water conditions on polyacrylamide’s viscosity.
  • Does polymer flooding affect viscosity in high-salinity formation-water?
  • According to the reports from oilfields in which polymer flooding has been applied, 5–4 it is a big challenge to maintain the polymer’s viscosity in high-salinity formation-water. Polyacrylamides, including partially hydrolyzed polyacrylamide (HPAM), are commonly used for polymer flooding.
  • Does calcium concentration affect molecular configuration and viscosity of polyacrylamide molecules?
  • Partially hydrolyzed polyacrylamide molecules in high-salinity formation-water solution are simulated using the molecular dynamics method to investigate the impact of calcium concentration on molecular configuration, network, and viscosity from microscopic dense to dilute phases. The key results are as follows: