The embodiment of the invention provides an oil and gas reservoir prediction method, device and equipment and a storage medium. The method comprises the steps of acquiring seismic data of each frequency band of a current prediction area; for seismic data of any frequency band, determining feature information of the current frequency band based on a preset prediction rule corresponding to the current frequency band; and fusing the feature information of each frequency band based on a preset fusion strategy, and obtaining a seismic data fusion body of the current prediction area, wherein the seismic data fusion body comprises feature information of all frequency bands, super-thick layer information can be reflected by utilizing the low-frequency band, and internal heterogeneity characteristics are reflected by utilizing the high-frequency band. Therefore, the seismic data fusion body can better represent the internal heterogeneity characteristics of the super-thick layer, the problem that the prediction effect of the strong heterogeneity reservoir of the super-thick layer is poor due to small volume of low-frequency seismic data and high-frequency seismic data in the prior art is solved, and the purpose of improving the prediction effect of the internal heterogeneity characteristics of the super-thick layer is achieved.