Excel Function
NonDarcyCoefficient
Description:
Calculates correlation for estimating non-Darcy coefficient, [d/mscf].
Excel Function Syntax:
=NonDarcyCoefficient(Rw, h, h_perf, SGgas, Ug, K)
Parameters:
| Parameter | Description |
|---|---|
| Rw | Wellbore radius, [ft]. |
| h | Reservoir height, [ft]. |
| h_perf | Perforated reservoir thickness, [ft]. |
| SGgas | Gas specific gravity (air=1.0). |
| Ug | Gas viscosity, [cP]. |
| K | Near wellbore permeability, [mD]. |
Related Theory
1 item
Gas Well Deliverability
Well Performance
Related Functions
3 items
GasFlowRatePSS
Calculates gas well flow rate for pseudosteady state condition using Darcy flow approximation, [mscf/d].
GasFlowRatePSSNonDarcy
Calculates gas well stabilized flow rate for pseudosteady state condition with Non-Darcy flow equation, [mscf/d].
TimeToPSSGas
Calculates time to stabilized flow in gas well, [h].
Missing a formula?Suggest a New Formula