Ansah-Knowles-Buba Functions
Ansah-Knowles-Buba (2000) dimensionless gas decline honouring pressure-dependent properties.
6 functions
PO.DCA.AKB.Rate(Qi, alpha, beta, time)
Calculates production rate using Ansah-Knowles-Buba (2000) semi-analytical decline model for bounded reservoirs. Units of volume [L3] and time [T] must be consistent.
PO.DCA.AKB.Prod(Qi, alpha, beta, time)
Calculates cumulative production using Ansah-Knowles-Buba (2000) semi-analytical decline model for bounded reservoirs. Units of volume [L3] and time [T] must be consistent.
PO.DCA.AKB.Time(Qi, alpha, beta, Q_econ)
Time to reach an economic rate limit for Ansah-Knowles-Buba (2000) decline, [T]. Returns the time when the production rate falls to the specified economic limit.
PO.DCA.AKB.EUR(Qi, alpha, beta, Q_econ)
Estimated Ultimate Recovery (EUR) to an economic rate limit for Ansah-Knowles-Buba (2000) decline, [L3]. Returns cumulative production up to the time the rate reaches the economic limit.
PO.DCA.AKB.Fit(times, rates)
Fit Ansah-Knowles-Buba (2000) decline to rate-time data and return parameters as a column array [Qi, Alpha, Beta].
PO.DCA.AKB.WFit(times, rates, weights)
Weighted fit of Ansah-Knowles-Buba (2000) decline to rate-time data and return parameters as a column array [Qi, Alpha, Beta].