Calculates effective drainage radius, [ft].
=PO.IPR.Re(A)
PO.IPR.Rwa(Rw, S)
Calculates effective wellbore radius, [ft].
PO.IPR.HW.DrainArea.Ellipse(L, b)
Calculates horizontal well drainage area using ellipse geometry (Joshi), [acre].
PO.IPR.HW.DrainArea.Rect(L, b)
Calculates horizontal well drainage area using two half-circles at ends plus rectangle (Joshi), [acre].
PO.IPR.VW.PSS.Time(Re, K, Ul, porosity, Ct)
Calculates time to reach pseudosteady state for oil well with regular-shaped drainage area, [h].
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