PO.MBE.Aq.Fet.Rate
Description
Calculates water influx rate (Fetkovich), [bbl/day]. qw = J * (pa - pr).
Syntax
=PO.MBE.Aq.Fet.Rate(J, pa, pr)Parameters
| Parameter | Description |
|---|---|
| J | Aquifer productivity index, [bbl/day/psi]. |
| pa | Average aquifer pressure, [psi]. |
| pr | Reservoir boundary pressure, [psi]. |
SI Unit Version
Lambda Name
PO.MBE.Aq.Fet.Rate.SIFormula
=LAMBDA(J, pa, pr, LET(
J_field, J * PO.UnitConverter(1, "psi", "kPa") / PO.UnitConverter(1, "bbl/d", "m3/d"),
pa_psi, PO.UnitConverter(pa, "kPa", "psi"),
pr_psi, PO.UnitConverter(pr, "kPa", "psi"),
result_bblpd, PO.MBE.Aq.Fet.Rate(J_field, pa_psi, pr_psi),
PO.UnitConverter(result_bblpd, "bbl/d", "m3/d")))SI Parameters
| Parameter | Unit | Description |
|---|---|---|
J |
m3/d/kPa | Aquifer productivity index, [m3/d/kPa] |
pa |
kPa | Average aquifer pressure, [kPa] |
pr |
kPa | Reservoir boundary pressure, [kPa] |
How to save as a reusable Excel function
LAMBDA is a built-in Excel feature (Microsoft 365) that lets you create custom functions without VBA. The formula above works as-is when pasted into a cell.
To save a LAMBDA as a reusable named function:
- Go to Formulas → Name Manager → New
- Enter a name, e.g.
PO.MBE.Aq.Fet.Rate.SI - In Refers to, paste the LAMBDA formula without the trailing invocation
(...) - Click OK
Now use =PO.MBE.Aq.Fet.Rate.SI(...) anywhere in your workbook.