PO.MBE.F.Oil
Description
Calculates underground withdrawal for oil reservoir, [RB]. F = Np*(Bo + (Rp-Rs)*Bg) + Wp*Bw.
Syntax
=PO.MBE.F.Oil(Np, Bo, Rp, Rs, Bg, Wp, Bw)Parameters
| Parameter | Description |
|---|---|
| Np | Cumulative oil production, [STB]. |
| Bo | Current oil FVF, [RB/STB]. |
| Rp | Cumulative producing GOR = Gp/Np, [scf/STB]. |
| Rs | Current solution GOR, [scf/STB]. |
| Bg | Current gas FVF, [RB/scf]. |
| Wp | Cumulative water production, [STB]. |
| Bw | Water FVF, [RB/STB]. |
SI Unit Version
Lambda Name
PO.MBE.F.Oil.SIFormula
=LAMBDA(Np, Bo, Rp, Rs, Bg, Wp, Bw, LET(
Np_bbl, PO.UnitConverter(Np, "m3", "bbl"),
Rp_scfSTB, PO.UnitConverter(Rp, "sm3/sm3", "scf/STB"),
Rs_scfSTB, PO.UnitConverter(Rs, "sm3/sm3", "scf/STB"),
Bg_bblft3, PO.UnitConverter(Bg, "m3/m3", "bbl/ft3"),
Wp_bbl, PO.UnitConverter(Wp, "m3", "bbl"),
result_bbl, PO.MBE.F.Oil(Np_bbl, Bo, Rp_scfSTB, Rs_scfSTB, Bg_bblft3, Wp_bbl, Bw),
PO.UnitConverter(result_bbl, "bbl", "m3")))SI Parameters
| Parameter | Unit | Description |
|---|---|---|
Np |
m3 | Cumulative oil production, [m3] |
Bo |
- | Current oil FVF, [rm3/sm3] |
Rp |
sm3/sm3 | Cumulative producing GOR = Gp/Np, [sm3/sm3] |
Rs |
sm3/sm3 | Current solution GOR, [sm3/sm3] |
Bg |
rm3/sm3 | Current gas FVF, [rm3/sm3] |
Wp |
m3 | Cumulative water production, [m3] |
Bw |
- | Water FVF, [rm3/sm3] |
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.F.Oil.SI - In Refers to, paste the LAMBDA formula without the trailing invocation
(...) - Click OK
Now use =PO.MBE.F.Oil.SI(...) anywhere in your workbook.