Figure 13. Acoustic impedance interpolation of sonic and density logs from wells in Figure 12. This interpolated model is used as input for correlation with seismic wavelets to develop the seismic models. Additional correlation markers include the top of the Cherokee (CHRK) and several other unnamed correlation markers. a). Black and white interpolation model with deflections to the right indicating higher impedance and deflections to the left indicating lower impedance. b). Color interpolation model with yellow, orange, and red indicating progressively lower acoustic impedance values and green, blue, and purple indicating progressively higher acoustic impedance values.