Effects of oil recovery rate on water-flooding of homogeneous reservoirs of different oil viscosity
- Lun ZHAO
- Xi CHEN
- Li CHEN
- Renyi CAO
- Xiangzhong ZHANG
- Jia LIU
- Fachao SHAN
DOIAbstract
Based on physical simulation of water-flooding homogeneous reservoirs, the water-flooding characteristics of homogeneous reservoirs with different oil viscosity are examined at different oil recovery rate. Reservoirs with low-viscosity (<5 mPa·s) oil can be evenly swept, with thick streamline. With increasing oil recovery rate, water rush weakens along the reservoir bottom and sweeps the reservoir more evenly in the vertical direction; and the sweep efficiency difference between top and bottom of the reservoir decreases. In high-rate development of the low-viscosity oil reservoir, the water-free recovery percent is significantly higher than that in low-rate development, and the rising velocity of water cut is lower than that under low-rate ...
Add to ORKG