[2E18-22] Natural resource exploitation(3)

[2E19] Evaluation of crude oil emulsion type and stability by electrokinetic properties

○Xingjuan Hao¹, Sadia Afrin¹, Mai Shimokawara², Yoshitake Kato², Ryuta Kitamura², Yogarajah Elakneswaran¹ (1. Hokkaido University, 2. Japan Oil, Gas and Metals National Corporation (JOGMEC))

The formation of crude oil emulsion is a complicated process with different types of transformation. In this study, the formation process of crude oil emulsion was divided into three stages. The type and stability of crude oil emulsion were investigated mainly based on electrokinetic property and resolved water. The effect of various brine conditions including pH, ion composition, and ionic strength on crude oil emulsion formation and stability was investigated. Moreover, the influence of crude oil properties especially total acid number/base number (TAN/TBN) ratio and asphaltenes content on emulsion formation and stability was evaluated.

Keywords:Crude oil emulsion, Stability, Zeta potential