PO.FRAC.Leakoff.Cumulative
Description
Cumulative fluid volume lost per unit area, [ft].
Syntax
=PO.FRAC.Leakoff.Cumulative(C, Sp, t)Parameters
| Parameter | Description |
|---|---|
| C | Total leakoff coefficient, [ft/sqrt(min)]. |
| Sp | Spurt loss, [ft]. Use 0 if no spurt. |
| t | Time since fracture opened, [min]. |
SI Unit Version
Lambda Name
PO.FRAC.Leakoff.Cumulative.SIFormula
=LAMBDA(C, Sp, t, LET(
C_ft, PO.UnitConverter(C, "m", "ft"),
Sp_ft, PO.UnitConverter(Sp, "m", "ft"),
result_ft, PO.FRAC.Leakoff.Cumulative(C_ft, Sp_ft, t),
PO.UnitConverter(result_ft, "ft", "m")))SI Parameters
| Parameter | Unit | Description |
|---|---|---|
C |
m/sqrt(min) | Total leakoff coefficient, [m/sqrt(min)] |
Sp |
m | Spurt loss, [m]. Use 0 if no spurt |
t |
- | Time since fracture opened, [min] |
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.FRAC.Leakoff.Cumulative.SI - In Refers to, paste the LAMBDA formula without the trailing invocation
(...) - Click OK
Now use =PO.FRAC.Leakoff.Cumulative.SI(...) anywhere in your workbook.