Fig. 9From: Pre-drilling assessments of average porosity and permeability in the geothermal reservoirs of the Danish areaLocal Stenlille permeability model. The local model is shown by a black solid line. The uncertainty range is illustrated by a low case (blue) and a high case (red). The high and low bounds are limited by factors of 2 and 0.5 of the model mid-line (black). Averaged core porosity data are plotted versus averaged core permeability data for the 10 Stenlille wells cored in the upper part of the Gassum formation (colour-filled symbols). A porosity cut-off of 15 % was applied prior to calculating averages. Log-based averages used for defining the general permeability model are plotted for comparison (small, open diamonds). The local Stenlille permeability model is related to the general permeability through a constant (here C = 0.5); i.e. k L = 0.5·k G. The use of these factors (0.5 and 2) also implies that the high bound (red) equals the general permeability model in this particular case. ST Stenlille, PHIT total porosityBack to article page