Figure 1 Comparison of inversion result (left) with initial model (right) showing how artefacts from well interpolation causes artefacts in the inversion. The reservoir sands (impedances shown as yellow/green in the interval 2150-2200ms) appear to deteriorate between K1 and K6 wells (left). The culprit is the interpolation method used to create the initial model (right). From Francis and Syed (2001).