Abstract：Late Eocene beach bar sandstone constitutes an important reservoir type in Dongying depression. As the beach bar sandstone is thin and interbedded with mudstone, it is difficult to identify it from normal seismic data. Aimed at solving the key issues of the beach bar sandstone existent at the development stage, the authors proposed the employment of a variety of geophysical methods such as frequency division multiple attribute dimension reduction and reflection coefficient inversion to solve the problem of effective reservoir microscopic description. The transformation from qualitative prediction to quantitative prediction is realized in the beach bar sandstone reservoir prediction studies. These methods have certain promoting significance for the description of the same sedimentary type.
