摘要
The lithology was complex in Dayangshu Basin. In this paper, the well log data were used to calculate the impendence of gas-bearing layer, AVO anomaly of gas-beating layer was belong to the first AVO anomaly after analysis. AVO analysis software was used to process the prestack gathers data of line 74, where is the location of Yangcanl Well, and it found that AVO anomaly amplitude of the gas-bearing layer was the first AVO anomaly. The use of AVO technical analysis proved that there was a wider range of gas-bearing unusual in both sides of Yangcan1 well, and there was second AVO anomaly which was more gas-bearing. Finally, various types of information proved that the line 74 in the southern basin depression Dayangshu was the best prospective areas for exploration.