Excel Function
PowerLawExponentialDeclineEUR
Description:
Estimated Ultimate Recovery (EUR) to an economic rate limit for Power Law Exponential (PLE) decline, [L3]. Returns cumulative production up to the time the rate reaches the economic limit.
Excel Function Syntax:
PowerLawExponentialDeclineEUR(Qi_intercept, Di_intercept, D_inf, n, econRate)
Online Calculator:
| Parameter | Value | Description |
|---|---|---|
| Qi_intercept | Rate "intercept", [L3/T]. | |
| Di_intercept | Decline constant defined by equation D1/n, where D1 is Decline constant at 1 time unit, [1/T]. | |
| D_inf | Decline constant at "infinite time", [1/T]. D_inf <= Di_intercept/>) | |
| n | Time "exponent", [dimensionless]. | |
| econRate | Economic rate limit, [L3/T]. | |
| Result |
Related Functions
5 items
PowerLawExponentialDeclineRate
Calculates production rate using Power Law Exponential (PLE) rate decline model. Units of volume [L3] and time [T] must be consistent.
PowerLawExponentialDeclineCumulative
Calculates cumulative production using Power Law Exponential (PLE) rate decline model. Units of volume [L3] and time [T] must be consistent.
PowerLawExponentialDeclineTime
Time to reach an economic rate limit for Power Law Exponential (PLE) decline, [T]. Returns the time when the production rate falls to the specified economic limit.
PowerLawExponentialDeclineFitParameters
Fit Power Law Exponential (PLE) decline to rate-time data and return parameters as a row array [Qi_intercept, Di_intercept, D_inf, n].
PowerLawExponentialDeclineWeightedFitParameters
Weighted fit of Power Law Exponential (PLE) decline to rate-time data and return parameters as a row array [Qi_intercept, Di_intercept, D_inf, n].