Excel Function
HyperbolicDeclineTime
Description:
Time to reach an economic rate limit for Arps hyperbolic decline, [T]. Returns the time when the production rate falls to the specified economic limit.
Excel Function Syntax:
=HyperbolicDeclineTime(Qi, Di, b, econRate)
Parameters:
| Parameter | Description |
|---|---|
| Qi | Initial rate, [L3/T]. |
| Di | Initial nominal decline rate, [1/T]. |
| b | Hyperbolic exponent, [dimensionless]. |
| econRate | Economic rate limit, [L3/T]. |
Usage Examples
Excel formula examples for HyperbolicDeclineTime
| Formula | Result |
|---|---|
=HyperbolicDeclineTime(500, 0.001, 0.5, 25)Calculate time to reach economic rate limit using hyperbolic decline with b=0.5 | 6944 |
Related Theory
1 item
Related Functions
5 items
HyperbolicDeclineCumulative
Calculates cumulative production using Arps (1945) hyperbolic decline curve, [L3]. Units of volume [L3] and time [T] must be consistent.
HyperbolicDeclineEUR
Estimated Ultimate Recovery (EUR) to an economic rate limit for Arps hyperbolic decline, [L3]. Returns cumulative production up to the time the rate reaches the economic limit.
HyperbolicDeclineFitParameters
Fit Arps hyperbolic decline to rate-time data and return parameters as a row array [Qi, Di, b].
HyperbolicDeclineRate
Calculates rate using Arps (1945) hyperbolic decline curve, [L3/T]. Units of volume [L3] and time [T] must be consistent.
HyperbolicDeclineWeightedFitParameters
Fit Arps hyperbolic decline to rate-time data with weights and return parameters as a row array [Qi, Di, b].