Method of moderate water injection and its application in ultra-low permeability oil reservoirs of Yanchang Oilfield, NW China
|
Method of moderate water injection and its application in ultra-low permeability oil reservoirs of Yanchang Oilfield, NW China |
| Xiangzeng WANG,Hailong DANG,Tao GAO |
| Fig. 2. Effects of reservoir quality index (a), wettability (b), water saturation (c) and oil-water viscosity ratio to the efficiency of imbibition displacement. |
|
|