The treatment of ANN lithofacies shows that typical delta facies include distal bar,mouth bar,subaqueous distributary channel,interdistributary estuary in delta front,delta plain branch channel and inter branch channel in ascending order.

• ANN(神经网络 )岩相处理结果表明 ,典型的三角洲沉积岩相序列自下而上依次为三角洲前缘远砂坝、河口砂坝、水下分流河道、分流间湾、三角洲平原分支河道及分支河道间沉积 ,将其结果与录井岩性序列对比 ,符合率非常高。