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Drainage volume of a given well which which is formed dynamically depending on the nearby well production and injection.
The more wells are are producing or or injecting around in the same reservoir the smaller the dynamic drainage area volume around each well is.
See Potential drainage volume to assess maximum drainage for the in case a reservoir is shared by two or more producing or injecting wells. drainage volume of a well in case it would have been producing or injecting alone.
See also
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Physics / Fluid Dynamics / Percolation
Petroleum Industry / Upstream / Subsurface E&P Disciplines / Field Study & Modelling / Drainage (fluid flow)
[ Drainage area (Ae) ] [ Drainage radius (re) ]