# Thread: Article: Estimate drainage Area for vertical well

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## Article: Estimate drainage Area for vertical well

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• vim
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Moha
What kind of reservoir it is and what drive mechanism it has.
Also what are possible reservoir parameters, then it is possible to estimate
vim

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hey, how could i calculate drainage volume by pressure transient analysis?
please check the steps those I think....

1) calculate effective permeability(k) from pressure transient analysis using Fekete soft.
2) calculate radius of investigation r(inv).
3) estimate drainage volume V = Ah = 3.1416*r(inv)*r(inv)*h

where, A = drainage area; h = reservoir thickness.

Now please tell me whether this procedure is correct or not. I am eagerly waiting for your replies.