Abstract：We propose in this paper a shale gas content prediction approach. We first analyze gas content of core in Jiaoshiba area, Sichuan Basin, and analyze measured gas content vs geophysical parameters. We find that density is sensitive to gas content. Then we establish an optimal fitting equation between density and gas content, and obtain an empirical formula for calculating gas content. After that we calculate gas content volume based on the density volume from prestack seismic inversion. Finally we predict quantitatively gas content. Our application shows that shale gas content can be quantitatively predicted based on density of prestack inversion. We also find out that the bottom of Wufeng-Longmaxi formation in the area has the highest gas content, which might be a prime target for the future exploration.
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