PO.FRAC.KGD.Width.General
Description
Khristianovic-Geertsma-de Klerk (KGD) fracture width (generalized with Poisson's ratio), [inches].
Syntax
=PO.FRAC.KGD.Width.General(Q, Ul, L, h, E, nu)Parameters
| Parameter | Description |
|---|---|
| Q | Injection rate (both wings), [bbl/min]. |
| Ul | Fluid viscosity, [cp]. |
| L | Fracture half-length, [ft]. |
| h | Fracture height, [ft]. |
| E | Young's modulus, [psi]. |
| nu | Poisson's ratio, [dimensionless]. |
SI Unit Version
Lambda Name
PO.FRAC.KGD.Width.General.SIFormula
=LAMBDA(Q, Ul, L, h, E, nu, LET(
Q_bblmin, PO.UnitConverter(Q, "m3/min", "bbl/min"),
L_ft, PO.UnitConverter(L, "m", "ft"),
h_ft, PO.UnitConverter(h, "m", "ft"),
E_psi, PO.UnitConverter(E, "kPa", "psi"),
result_in, PO.FRAC.KGD.Width.General(Q_bblmin, Ul, L_ft, h_ft, E_psi, nu),
PO.UnitConverter(result_in, "in", "cm")))SI Parameters
| Parameter | Unit | Description |
|---|---|---|
Q |
m3/min | Injection rate (both wings), [m3/min] |
Ul |
- | Fluid viscosity, [cP] |
L |
m | Fracture half-length, [m] |
h |
m | Fracture height, [m] |
E |
kPa | Young's modulus, [kPa] |
nu |
- | Poisson's ratio, [dimensionless] |
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.KGD.Width.General.SI - In Refers to, paste the LAMBDA formula without the trailing invocation
(...) - Click OK
Now use =PO.FRAC.KGD.Width.General.SI(...) anywhere in your workbook.