Sustainability 2011 , 3
1996
Figure 6. Average production profile for wells drilled each year between 1984 and 2002.
Data from the PADCNR.Figure 7. Production profile. All production data (total production over the life of a well)
shown at a log scale with an average production curve fitted to the data. The y-axis is
shown at a logarithmic scale in order to show the complete range of available production
data. Downward deflection of older portion of curve is due to logarithmic decline.