PO.DCA.AKB.Rate

Description

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.

Syntax

=PO.DCA.AKB.Rate(Qi, alpha, beta, time)

Parameters

Parameter Description
Qi Initial rate, {L3/T}.
alpha Decline shape parameter related to reservoir characteristics, {1}.
beta Decline rate parameter controlling speed of decline, {1/T}.
time Time, {T}.

Related Functions

PO.DCA.AKB.D(Qi, alpha, beta, time)

Calculates instantaneous decline rate D(t) for Ansah-Knowles-Buba (2000) decline, {1/T}. Computed numerically.

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.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.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).

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