Seismic Signature of Transition Zone (Wolf Ramp) in Shale Deposits with Application of Frequency Analysis

Figure 14

Well logs representing sonic (DTP) and density logs (RHOB) and lithological information for wells L-1, O-2, and K-1. Pasłęk fm: the top of the Pasłęk Formation; Prabuty mudstone: O3. Dashed black line approximates the linear character of velocity of the Pasłęk Formation; dashed red line indicates the increase in volumetric clay mineral content.

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