Method and device for judging reservoir fluid trend and compaction trend

The invention discloses a method and device for judging a reservoir fluid trend and a compaction trend. The method for judging the reservoir fluid trend and the compaction trend comprises the steps of: obtaining a pre-stack seismic gather of a target region, obtaining a longitudinal wave speed, a transverse wave speed and a density data volume according to the pre-stack seismic gather of the target region, utilizing the longitudinal wave speed, the transverse wave speed and the density data volume to obtain a pseudo attenuation attribute volume, obtaining an orthogonal attribute factor expression based on a rotation angle as a parameter according to the pseudo attenuation attribute volume, obtaining a rotation angle value based on rock physical analysis, and substituting the rotation anglevalue into the orthogonal attribute factor expression to obtain a corresponding orthogonal attribute factor, and judging a reservoir fluid trend and a compaction trend based on the orthogonal attribute factors. 本说明书公开了一种判断储层