And spatially, the structural traps are distributed in the escarpment.And litho-structural traps in the slope region.And the litho-traps, such as lentoid sandstones in the central deep sags.

• 凹陷的陡坡带以构造油藏为主，斜坡带以构造-岩性及储层上倾尖灭油藏为主，深陷带主要为透镜状岩性油藏；