Numerical simulation study to understand the performance of RPM gels in water-shutoff treatments

The results explored that the DPR performance was excellent in both of water-cut reduction and oil-recovery improvement when the flow regime was viscous dominated (viscous-gravity number<0.1). On the other hand, when the flow regime was gravity dominated (viscous-gravity number >10), the effective period of DPR treatment was a short-term remedy. Secondly, when the high-K layer is existed at the lower-zone of oil or gas reservoir, the reservoir would be a good candidate for the DPR treatment as compared with the reservoirs that have the high-K layer located at the upper zone. Furthermore, selecting the correct time to perform DPR treatments generally could have a significant role to mitigate water production. Finally, the dimensions of the treated fracture are the key components to get a successful DPR-treatment in the hydraulically fractured reservoirs.