A comparative study on enhancing oil recovery with partially hydrolyzed polyacrylamide: Emulsion versus powder

In China, powders of partially hydrolyzed polyacrylamide (P‐HPAM) have been extensively used in chemically enhanced oil recovery (cEOR) processes. However, the relatively longer dissolution time of P‐HPAM and high investment in surface facilities diminish the profit. Here, we compared the properties between P‐HPAM and emulsion HPAM (E‐HPAM) with similar molecular weight of 1.5 × 10 7 g/mol at polymer concentration of 1000 mg/L under a simulated...