Surfactant EOR Market Insights: Opportunities and Challenges Through 2031 | #surfactant EOR market # enhanced oil recovery # BASF SE # Halliburton # Huntsman International LLC # Oil Chem Technologies # Sasol Limited # Shell International B.V. # Solvay S.A. # Stepan Company # The Dow Chemical Company # biosurfactants # ASP flooding # SP flooding # anionic sulfonate # anionic carboxylate # onshore offshore applications # oil recovery # market size # growth drivers # emerging opportunities # 3.6% CAGR # industry trends # sustainable solutions