Robust Reservoir Indication Using Relative Absorption Coefficient Extracted from Pre-stack Seismic Data

Although the post-stack seismic data has high S/N after horizontal stacked, it is at the cost of high-frequency signals damaged in large offset. In this paper we estimate the relative absorption coefficient using pre-stack seismic data and a more reliable absorption coefficient is calculated, which not only can tell the strong absorption caused by strong reflection and eliminate the false reservoir indicator, but also improve the resolution of the absorption attribute.