Application of weak gel profile control technology in LD5-2 oilfield

Strong reservoir heterogeneity and high water-oil mobility ratio of LD5-2 oilfield EdⅡu area for many years led to disequilibrium between layers. In order to improve profile of injection well, control break through of injected water, startup producing reserves of mid-low permeable interval, and decrease the water ratio, laboratory study and field application of weak gel profile control technology were conducted in LD5-2 oilfield EdⅡu area. The results showed that weak gel obtained good effect and provided new ideas and methods for enhancing oil recovery in offshore field.