The Research Of Scaling Mechanism And Forecast Of Weak Base ASP Flooding On The Injection-side

ASP flooding is first proposed by the foreign in the early 20th century 80, it is in the surfactant/polymer binary flooding, alkaline/polymer binary flooding developed on the basis of the tertiary oil recovery technology. ASP flooding embodies the surfactant flooding, polymer flooding and alkaline flooding characteristics, and gives full play to the synergy between the three, and fully enhances the efficiency of various chemical agents and reduce the amount of the chemical agents in particular the amount of surfactant. At present, the DaQing oil field through the "Eighth Five-Year ", "Ninth Five-Year" and "Tenth Five-Year " of the science and technology research, ASP flooding technology breakthrough has been made. There were five pilot test in different Well, well spacing and the different nature of the reservoir which showed that ASP flooding enhanced oil recovery 20% compared with water flooding and achieved good effects of increasing oil recovery, which has broad application prospects.This paper studies the scaling mechanism of weak base ASP flooding on the injection-side, summarizes and analyses the effects of several major scaling measures, which plays a positive role in preventing from scaling of the weak base ASP flooding on the injection-side.