Select the range above which to ignore readings

Select whether to apply a mean, median, or RMS constant average to the log portion between the shallowest and deepest top within your selection. Remove the top and bottom zones, which can skew the model with inaccurate data.

Select the log to block.

Type start and stop depths and click Update.
Click either Top or Bottom to select an absolute depth from the log or click All to select both.
Click Get range from tops to select a range using the formation top names that also appear in the tops list selected in the Top Properties dialog box .