砂泥岩互层的垂向分辨率是岩性油气藏勘探中的重要内容。文中讨论了带限地震子波及其分辨率问题，并结合砂泥岩互层的理论模型，认为λ/4 的垂向分辨率定义是不合适的,而λ/8 最合适。岩性油气藏勘探实例表明,当大套泥岩含有薄层砂岩时,垂向分辨率可以达到λ/16。这为砂泥岩互层的岩性油气藏勘探提供了理论基础。

The seismic vertical resolution of sand shale interbed is very important to the exploration of lithologic reservoirs. Band limited seismic wavelet and its resolution are discussed. The theoretical model of sand shale interbed shows that the definition of !/4 vertical resolution is not reasonable while!!/8 vertical resolution is much more
reasonable. The exploration practices of lithologic reservoirs showthat the vertical resolution may be !/16 when there is a big set of shale which includes thin sandstone. The research result provides theory foundation for the lithologic reservoir exploration of sand shale interbed.