Abstract: It is more and more difficult to enhance oil recovery in Honggang oilfield through conventional technology based on the existing well pattern and configuration. So it is increasingly necessary to seek for a suitable tertiary oil recovery method to improve ultimate recovery. The lab experiments and oilfield pilot test show that ASP flooding is most practical in Hong Gang oilfield. The pilot test also indicates that the ASP flooding effect is most remarkable in high remaining oil saturation and/or low watercut reservoir. It is the first time for the ASP technology to be applied to the sparse reverse 13-point well pattern, which is another way to maintain and even to enhance the oil rate of Honggang oilfield.

Key words: enhanced oil recovery, ASP flooding, performance analysis, pilot test, Honggang oilfield