Research Development of Petroleum Sulfonates Used in EOR
He Tao Li Hongying He You'an (Department of Petroleum Engineering, Jianghan Petroleum Institute,J ingzhou 434023)
Petroleum sulfonates were one of the most common su rf actants used in EOR. The preparation, process flow, and quantitative determinati on of content and average molecular weight of petroleum sulfonates were reviewed . Different methods of determination were compared.