Abstract
The formation of emulsions is recognized to be a challenging problem during crude oil production and processing. Emulsion stability and interfacial properties were investigated in this work for paraffinic modified Brazilian crude oils. Crude oil modifications were made by the addition of two different non-endogenous paraffins, n-hexadecane and a commercial paraffinic pool (melting point range of 53–57 °C), to a heavy crude oil, here, named P1, based on asphaltene destabilization results previously published (Romero Yanes, J. F.; Feitosa, F. X.; do Carmo, F. R.; de Sant’Ana, H. B. Paraffin Effects on the Stability and Precipitation of Crude Oil Asphaltenes: Experimental Onset Determination and Phase Behavior Approach. Fluid Phase Equilib. 2018, 474, 116−125, 10.1016/j.fluid.2018.07.017). Paraffinic modified oils were emulsified with synthetic brine (pH 7 and 60 g L–1 NaCl) to identify the phases of the emulsion formed when varying the water content from 10 to 90% (v/v) and temperature from 30 to 80 °C. Fro...
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