Excel Function
DuongDeclineWeightedFitParameters
Description:
Weighted fit of Duong decline to rate-time data and return parameters as a row array [a, m, q1, qInf].
Excel Function Syntax:
=DuongDeclineWeightedFitParameters(timeValues, rateValues, weightsValues)
Parameters:
| Parameter | Description |
|---|---|
| timeValues | Time samples (range or array). |
| rateValues | Observed rates (range or array). |
| weightsValues | Per-sample weights (range or array), same length as inputs. |
Related Theory
1 item
Duong Decline Model for Unconventional Wells
Decline Models
Related Functions
5 items
DuongDeclineCumulative
Calculates cumulative production using Duong decline model, [L3]. Units of volume [L3] and time [T] must be consistent.
DuongDeclineEUR
Estimated Ultimate Recovery (EUR) to an economic rate limit for Duong decline, [L3].
DuongDeclineFitParameters
Fit Duong decline to rate-time data and return parameters as a row array [a, m, q1, qInf].
DuongDeclineRate
Calculates rate using Duong decline model, [L3/T]. Units of volume [L3] and time [T] must be consistent.
DuongDeclineTime
Time to reach an economic rate limit for Duong decline, [T]. Returns the time when the rate falls to the specified limit.
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