[2E18-22] 資源開発(3)

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

○Hao Xingjuan¹、Afrin Sadia¹、Shimokawara Mai²、Kato Yoshitake²、Kitamura Ryuta²、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.

キーワード：Crude oil emulsion, Stability, Zeta potential