PO.MBE.Aq.VEH.tD Function
Description:
Calculates dimensionless time for VEH aquifer, [dimensionless]. tD = 0.00634*k*t / (phi*muw*ct*rr^2).
Excel Function Syntax:
=PO.MBE.Aq.VEH.tD(K, t, porosity, Uw, ct, rr)
Parameters:
| Parameter | Description |
|---|---|
| K | Permeability, [md]. |
| t | Time, [days]. |
| porosity | Porosity, [fraction]. |
| Uw | Water viscosity, [cp]. |
| ct | Total compressibility, [1/psi]. |
| rr | Reservoir radius, [ft]. |
Used in Blueprints
Van Everdingen-Hurst Aquifer Model
Calculate water influx using the Van Everdingen-Hurst (VEH) transient aquifer model. This rigorous method handles both infinite and finite aquifers with time-dependent pressure response.