Abstract: Xing9 Conglomerate is located in north-central downthrown side of Daxing fault west of Langgu sag, which is characterized by near supply sources, narrow facies zone and rapid facies variation. Oil and gas entry is the clumpy conglomerate in the lower submember of the third member of Shahejie Formation. But the boundary of clumpy conglomerate is diffi cult to be identifi ed and the favorable reservoir is diffi cult to be predicted, seriously affecting precise reserves calculation. For the above problems, based on in-depth analysis of seismic data, geologic data and well log, this paper predicted the spatial distribution characteristics of Xing9 Conglomerate reservoir and the oil-gas bearing distribution inside the reservoir, and described the distribution of effective reservoir meticulously, using such techniques as the acoustic impedance inversion technique, the reservoir parameter inversion technique and the pre-stack seismic attenuation attribute technique. The predicting results meet the accuracy requirement, providing important parameters and basis for reserves recalculation.