OAB Oleamidopropyl Betaine: Using a C18 Unsaturated Chain for Oilfield Performance
Explain how OAB's C18 unsaturated chain provides ultra-low interfacial tension and pH-responsive thickening for self-diverting acid, chemical flooding, and clean fracturing fluids.
Article Summary
Oleamidopropyl betaine (OAB) contains a C18 unsaturated chain, an amide linkage, and a zwitterionic betaine group. The longer flexible chain forms a thicker interfacial film and can reach ultra-low interfacial tension for chemical flooding.
Under acidic conditions, protonation strengthens hydrophobic association and can produce wormlike micelles and a three-dimensional network, sharply increasing viscosity; this makes OAB a core material for self-diverting acid, clean fracturing fluids, and other oilfield systems. It also offers useful salt tolerance and thermal performance for demanding fluid environments.
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