Dear reserachers, 

in order to calculate the areal efficiency exist some graphical methods that usually correlate mobility ratio and water cut depending on the  pattern in waterflooding. However, I haven't found a plot for an inverse 5 spot pattern, would it be correct to use the same plot as for a normal 5 spot pattern?

Any additional information related to the methods for computing areal efficiency are very welcome. Thank you in advance!

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