PO.MBE.Exp.Efw Function
Description:
Calculates formation/water expansion term (Efw), [RB/STB]. Accounts for rock compaction and connate water expansion.
Excel Function Syntax:
=PO.MBE.Exp.Efw(Boi, cw, cf, Swc, m, deltaP)
Parameters:
| Parameter | Description |
|---|---|
| Boi | Initial oil FVF, [RB/STB]. |
| cw | Water compressibility, [1/psi]. |
| cf | Formation compressibility, [1/psi]. |
| Swc | Connate water saturation, [fraction]. |
| m | Gas cap ratio. 0 for no gas cap. |
| deltaP | Pressure drop = pi - p, [psi]. |
Used in Blueprints
Material Balance Expansion Terms
Calculate material balance expansion terms for oil reservoir analysis. These terms quantify fluid and rock expansion as pressure drops during production.