Abstract: Abstract：The exploration of lithologic oil pool formed by the channel sand body is getting more and more attention by
explorationists. Because of the complexity and diversity of the fluvial reservoir，it is difficult to be controlled and predicated
effectively with well data. With the well data’s calibrating，the fluvial reservoir prediction must be made by sufficiently taking
advantage of the lateral continuity of seismic data. Wuth the analysis of seismic attribution，the paper presents the fluvial
reservoir predicting in the upper section of Es1and Ed formation of the Paleogene in Wen’an Slope，Baxian Depression，
Jizhong Sag，Bohaiwan Basin. The results are：（1）The high amplitude of peaks and troughs of seismic wave represent the
distribution of the fluvial sand body and the water system. （2）The amplitudes fourth derivative is sensitive to the weak change，
so it can identify the channel sand body easily，especially for carving the distribution of the channel bed. （3）The channel
deposit is characterized by low frequency seismic reflection，and the distribution of fluvial sand body was corresponded with
the area of frequency lower than 10 Hz. （4）Based on the waveform analysis technique with neural network，we can overcome
the ambiguity and uncertainty brought by single parameter in seismic attribution. Through calibrating with well data，the results
of classification highly correspond with the recognition of geology.

Key words: Key words：seismic attribution, fluvial sand body, reservoir predication, Wen’an Slope, Baxian Depression