The image represents the total production time.

To compute for the total production time, two essential parameters are needed and these parameters are **Cumulative Production before Shut-In (N _{p}) and Stabilized Well Flow (Q_{o}).**

The formula for calculating the total production time:

t_{p} = ^{24Np} / _{Q}_{o}

Where:

t_{p} = Total Production Time

N_{p} = Cumulative Production before Shut-In

Q_{o} = Stabilized Well Flow

Let’s solve an example;

Find the total production time when the cumulative production before Shut-In is 24 and the stabilized well flow is 43.

This implies that;

N_{p} = Cumulative Production before Shut-In = 24

Q_{o} = Stabilized Well Flow = 43

t_{p} = ^{24Np} / _{Q}_{o}

t_{p} = ^{24 x 24} / _{43}

t_{p} = ^{576} / _{43}

t_{p} = 13.39

Therefore, the **total production time** is **13.39 hrs.**