Middle and large oil/gas fields are largely distributed in the deep fault depressions along the two sides of NNE Sunwu-shuangliao lithosphere fault crossing the central part of Songliao basin.

• 松辽盆地断陷层系大、中型油气田主要分布于贯穿松辽盆地中央区域的北北东向孙吴-双辽岩石圈断裂两侧的深断陷之中。