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.

大庆肇州油田州57区块位于松辽盆地北部中央坳陷区三肇凹陷内，为多条断层切割的非均质砂岩油藏。