根据濮城油田南区沙二上2＋3油藏大厚层、层内非均质严重的地质特点及注水波及系数小、水驱动用程度低、产量递减快的开发现状，指出了挖掘南区沙二上2＋3油藏潜力的方向是提高水驱动用程度，改善油藏开发效果，实现稳产；挖潜措施是应用PI决策技术进行区块整体调剖。实践证明PI决策技术在南区沙二上2＋3油藏的应用是成功的。 According to the development status of large thick layer of 2 + 3 reservoir in the south of Pucheng Oilfield, serious geological heterogeneity in the layer, small developing coefficient of water flooding, low degree of water-driven use, The potential of the second Shang2 + 3 reservoir is to increase the degree of water-driven use, improve the reservoir development effect, and achieve stable production. The potential tapping measures are the application of PI decision-making technique to conduct overall profile control of the block. The application of PI decision-making technology in the 2 + 3 reservoir in Sha 2, South China has been proved successful.