PO.FRAC.Leakoff.Velocity
Description
Carter leakoff velocity at given time, [ft/min].
Syntax
=PO.FRAC.Leakoff.Velocity(C, t)Parameters
| Parameter | Description |
|---|---|
| C | Total leakoff coefficient, [ft/sqrt(min)]. |
| t | Time since fracture opened, [min]. |
SI Unit Version
Lambda Name
PO.FRAC.Leakoff.Velocity.SIFormula
=LAMBDA(C, t, LET(
C_ft, PO.UnitConverter(C, "m", "ft"),
result_ftmin, PO.FRAC.Leakoff.Velocity(C_ft, t),
PO.UnitConverter(result_ftmin, "ft/min", "m/min")))SI Parameters
| Parameter | Unit | Description |
|---|---|---|
C |
m/sqrt(min) | Total leakoff coefficient, [m/sqrt(min)] |
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.Velocity.SI - In Refers to, paste the LAMBDA formula without the trailing invocation
(...) - Click OK
Now use =PO.FRAC.Leakoff.Velocity.SI(...) anywhere in your workbook.