PO.IPR.VW.PSS.Rate.ByFetkovich Function
Description:
Calculates Fetkovich backpressure IPR flow rate for oil, [STB/d]. Fetkovich (1973) correlation.
Excel Function Syntax:
=PO.IPR.VW.PSS.Rate.ByFetkovich(C, n, Pres, Pwf)
Parameters:
| Parameter | Description |
|---|---|
| C | Performance coefficient, [STB/(d·psi^2n)]. |
| n | Flow exponent (0.5 to 1.0), [dimensionless]. |
| Pres | Average reservoir pressure, [psia]. |
| Pwf | Bottom-hole flowing pressure, [psia]. |
Used in Blueprints
Fetkovich IPR Curve
Construct an IPR curve using the Fetkovich backpressure equation. This empirical method works for both single-phase and two-phase flow by fitting well test data to Qo = C(Pr² - Pwf²)ⁿ.