A simple Log Value Layering tool is provided to quickly sub divide either Gamma ray, Porosity, Permeability or Water saturation logs into a discrete series of layers for use in the Multi Layer Fractional Flow Model or Craig-Geffen-Morse Layer model.

 

 

Either copy and paste the log data directly into the input data grid shown above, or use the Import CSV button to import an ASCII comma delimited file into this data grid. It is important to note that the structure of the CSV file must contain 5 columns of data even if the 5 columns are not used (column 1 = depth, column 2 = GR, column 3 = Porosity, column 4 = Permeability, column 5 = Swc). In the instance where the log data is not used simply enter 0 values for the entire column of values.

 

For the example shown above the top line of the CSV would look like ; 6324.6799, 0, 0.1264, 67.203, 0.9877.

 

Then select the "Layering Tables" tab, as shown below, input the required Variance Lag points [default value is set to 10], then select the log in which to calculate the numbers of layers, and press the Calculate button. Once the Calculation has been performed the log and layer values should be shown in the Layering Chart and Summary Table. The user can quickly change the character of the layering by iterating with both the Layer Tolerance slider bar and the Variance Lag points.

 

Once the user is happy with the layering calculations, they can choose to display other logs and layer averages in the final tab "Resultant Layer Charts", as shown in the right hand image below.

 

 

 

 

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