118 Seismic Imaging Figure 4.24 3D seismic processing. Top left: in-line 31 pseudo-velocity section (upper part: close up of 0 to 35 m depth interval). Top right: pseudo-velocity map at 87 m depth. Bottom left: in-line 21 pseudo-velocity and porosity seismic sections. Bottom right: cross-line 24 pseudo-velocity and porosity seismic sections. The resulting 3D seismic pseudo-porosity block revealed three high-porosity layers, at depths of 35 to 40 m, 85 to 87 m and 110 to 115 m. The 85 to 87 m layer is the most porous, with porosities higher than 30 %, which represents the karstic part of the reservoir. Figure 4.25 shows the distributions of porous bodies in the 80 to 90 m and 100 to 120 m depth intervals.
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