In the high exploration stage,the exploration target of the turbidite reservoirs of $\text{E}_{3}\text{S}_{3}^{2}$ in Niuzhuang sag has been gradually turned to complex subtle reservoir whose characteristics are small scale,thin thickness,rapid lateral variation and containing carbonate.It is difficult to describe the thin interbed reservoir using conventional seismic data,and is also difficult to identify sandstone in gray background.To tackle these problems,the authors studied the prediction of sand reservoir by combining the reconstruction of lithologic sensitive curve with the inversion of waveform indication.It turns out that seismic indication inversion obviously suppresses the interference of gray matter components,and the inversion using lateral variation of waveform instead of traditional variation function can improve the inversion accuracy,with the accuracy of thickness above 5 m being 88.5%,and that of thickness of 2~5 m being 80.2%.The inversion of sand conforms to the sedimentary law and the reservoir fluid distribution in the study area.By applying the reservoir prediction results,a total of 20 exploration wells were deployed in 5 development blocks,of which 8 wells were drilled and industrial oil was obtained after they were put into production,with the new expected capacity being about 4×10⁴ t.