According to oil-source rock correlation

there are two petroleum systems in Nanpu Depression.One is Shahejie Formation petroleum system

the other one is Dongying Formation petroleum system.The source rocks of Sha-3 member of the first system began oil generation in the late stage of Dongiyng Formation

and formed self generation self reservoiring oil pools;the source rocks of the system began secondary oil generation in late Minghuazhen Formation

and formed Tertiary secondary oil pools.As for the second system

the source rocks of the third member of Dongying Formation in the south side of Gaoliu Fault started oil generation in the late stage of Minghuazhen Formation

and formed self generation self reservoiring oil pools of Dongiyng Formation and Tertiary secondary oil pools

but no hydrocarbon pools could be found in the north side of the faults.So it is suggested that hydrocarbon exploration should aimed at the petroleum system of Shahejie Formation in Gaoshangpu and Liuzan areas of the sag

and the Dongying Formation petroleum system in Beipu and Laoyemiao areas.