Figure shows the genGEO well cost lines for diameters ranging from 14 cm to 66 cm. Figure also shows GETEM bottom-up well cost relationships that were used prior to 2012 for these same well diameters. Figure shows the genGEO diameter-dependent relationship encapsulates the original GETEM values. For comparison, the current GETEM well costs for both a large-diameter 31 cm well and small-diameter 22 cm well are also shown in blue.