Abstract: This paper presents the comprehensive identification methods of moderate watered-out zones and the flowsheets designed for tapping the production potential.Based on analysis, the residual recoverable reserves in the moderate watered -out zones in Shuanghe oilfield make up 29.4% of the total residual recoverable reserves of the oilfield. After reperforating at the moderate watered-out zones in 25 wells,single zone produation showed that the average incremental oil per day per well was 5.1t and the water production rate droped 17.3m3 .It proved that the moderate watered- out zones would be the targets to develop the remaining oil.