| 1 | Fang 169 block in Zhaozhou oilfield is part of the Zhaozhou nose structure located in the south of Sanzhao depression of the Songliao Basin. | |
| 2 | Zhou57 area in Zhaozhou Oilfield locates in Sanzhao depression of central depression belt in northern Songliao Basin, developing sandstone reservoir truncated by large numbers of faults. |