Malang Depresss covering an area of 1500 km2 is located at the middle of the Santanghu Basin. It is the key target for oil gas reservoir of the Permian Lucaogou formation.

• 位于三塘湖盆地中部的马郎凹陷是油气重点区带之一,面积1500 km2,区内二叠系芦草沟组为主要勘探目的层。