Fig. 11

Local permeability model representing the Gassum formation in North Jylland. The local area corresponds to the northernmost part of Denmark. The model is shown by a Mid-line (black), and the uncertainty range is illustrated by a Low case (blue) and a High case (red). The model is based on averaged core analysis data from the Børglum-1 and Flyvbjerg-1 wells (not shown) and the uncertainty range is related to the expected average permeability (indicated by blue and red lines). Conventional core porosity data are plotted versus core permeability data for the Børglum-1 and Flyvbjerg-1 wells cored in the Gassum formation (colour-filled symbols). The shale points, i.e. the data points plotting below the blue line, are not included in calculating averages. A porosity cut-off of 15 % was applied prior to plotting data. The uncertainty range is connected to the expected average permeability and thus it is not connected to the dataset consisting of conventional core analysis data. The local North Jylland permeability model is related to the general permeability model through a constant; i.e. Local North Jylland permeability model = 1.7 × general permeability model