## Calculate average thickness in a planview map

I have a clearly defined channel system in my project that I want to calculate the volume for. To do this I need the average thickness of the channel. I have been able to establish the estimated thickness of my channel using tuning thickness (the channel is embedded within a reflector). I now have a thickness map of this channel.

Since the thickness varies widely in the channel, I cannot use an average thickness value for the whole system. I have had to break up the channel system into separate polygons of approximately the same thickness.

What I want to do is to have kingdom measure the average thickness value in each polygon. For some reason though, I cannot get this to happen. The closest I can get is to use the extended math calculator to calculate the mean thickness between 2 horizons. This is useless to me as I donâ€™t have 2 horizons.

Is there any way for kingdom to simply average the thicknesses within the polygon?

Thank you for taking the time to read this. Please let me know if I need to clarify a point.

I think you can try “Math on Two Maps Calculator” under Tools > Calculators.

I would still think that you will need to pick the top and the base of the channel system and grid the both interpretation. Single polygon around the channel system can be used under the “Polygon” tab to restrict the isochron/isopach maps which will be available when you choose “Other” as you map output.

Once you have the data points in your polygons, you can first export, and then import those into Excel and take the average if you all need is a single number in each polygon.

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LikeThanks admin for your response. I also am stuck with something quite similar. Could you please explain further how average thicknesses can be calculated?

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LikeMarcy,

List the data points in Excel, i.e. in a range of A1:A20 (20 data points in total). Type the formula “=AVERAGE(A1:A20)” in a new cell, and it returns the average of those numbers.

For details of the AVERAGE function:

https://support.office.com/en-us/article/AVERAGE-function-047BAC88-D466-426C-A32B-8F33EB960CF6

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LikeCopy the horizon for each section, Then erase outside the polygon.

In the newer versions of kingdom(2015+, maybe even 8.8) you can do this in one step.

With the horizon open Goto [Horizon > Horizon Editing Tools > Erase > Parameters]

The first thing it will ask you is if you want to edit in place, or make a copy.

As for settings You should be able to use the 2 drop downs to select outside, and the polygon you want to use. If you use apply, you can just grab another polygon and do all of them right there in about a minute.

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