Abstract: Quantitative analyses of relations of seismic data with exploratory well and reserve history in Jiyang depression shows that more powerful seismic prospecting is significant foundation for maintaining high-level exploration. It is 3D application and development that guarantee the stable growth of petroleum reserves in the depression in recent years. Comparing with 2D seismic, 3D seismic has much better exploratory effects. Therefore, 3D seismic is more and more paid attention to with exploration extent enlargement. In Jiyang depression, the locations of exploration well given by 3D seismic allow useful-life possible about 5 years. In view of continuing growth for geologic understandings of the depression, it appears that the successive rate for exploration wells disposed is not decreasing obviously in similar 3D project area with the increase of the useful-life.

Key words: Jiyang depression, seismic exploration, effect