Poly(Cinnamoyloxy Ethyl Methacrylate-Co-Octadecyl Acrylate) as Flow Improver for Egyptian Waxy Crude Oils

摘要

The octadecyl acrylate-cinnamoyloxy ethyl methacrylate linear copolymers (CEMA-ODA) were designed to be applied as pour point depressants. The preparation scheme involved synthesis of cinnamoyloxy ethyl methacrylate (CEMA) monomer and then copolymerization with octadecyl acrylate (ODA) at different molar ratios in the feedstock. The efficiency of these copolymers to depress pour points and rheological characteristics for waxy crude oils using different concentrations of CEMA-ODA additives were studied. It was observed that the synthesized copolymers showed nonNewtonian pseudoplastic relationships at different concentrations of synthesized additives. CEMA-ODA copolymer with molar ratio 1:3 has good ability to disperse wax crystals and improve the flow behavior of tested crude oils even at temperatures below their pour points. The results showed that there is a good correlation between viscosity measurements and pour point characteristics.