Five microfacies of subsea distributary channel, its flank, subsea natural barrier, subsea interdistributary bay and coastal or neritic shale are developed in Block Wen 65 of Wenliu Oilfield.

• 文留油田文65块发育水下分流河道、水下分流河道侧翼、水下天然堤、水下分流间湾、滨浅湖泥5种微相。