Practice and Understanding of Tapping the Potential at High Water-cut Stage in Block Shan'er Pilot Area

Based on the geologic characteristics in the pilot area of Block Shaner, the distributional rule of remaining oil is studied in combination with the production conditions of high production cycle, extra-high water-cut stage, low recovery percent and low production rate at the production stage. Steam injection profile is regulated, liquid withdrawal profile is controlled; tapping the vertical potential of remaining oil is performed on 3 selected wells, by which prolonged result is achieved.