The area around a producing or injecting well where reservoir fluid is forced moving by the well operation.
In other words, the area, where reservoir fluid is moving along the streamlines which either stem from injecting well or end up at producing well.
For a constant-thickness reservoir it For homogeneous reservoir it can be estimated as:
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A_e = \frac{V_e}{h_e \ \phi_e} |
where
It is often related to drainage radius
as:
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A_e = \pi \, r_e^2 |
which can be is misnomer for other shapes of drainage area.
See also
...
Physics / Fluid Dynamics / Percolation
Petroleum Industry / Upstream / Subsurface E&P Disciplines / Field Study & Modelling / Drainage (fluid flow)
[ Drainage volume Ve ] [ Drainage radius (rere) ]