# How to Calculate and Solve for Minimum Transient Time in Well Testing | The Calculator Encyclopedia The image above represents minimum transient time.

To compute for the minimum transient time, five essential parameters are needed and these parameters are permeability (k), porosity (φ), reservoir radius (r), viscosity (μ) and total compressibility (CT).

The formula for calculating the minimum transient time:

t = 9.48 x 104 φ CT r² / k

Where;

t = Minimum Transient Time
k = Permeability
φ = Porosity
μ = Viscosity
CT = Total Compressibility

Let’s solve an example;
Given that the permeability is 11, porosity is 14, reservoir radius is 7, viscosity is 13 and total compressibility is 22.
Find the minimum transient time?

This implies that;

k = Permeability = 11
φ = Porosity = 14
r = Reservoir Radius = 7
μ = Viscosity = 13
CT = Total Compressibility = 22

t = 9.48 x 104 φ CT r² / k
t = 9.48 x 104 x 14 x 22 x 7² / 11
t = 9.48 x 104 x 14 x 22 x 49 / 11
t = 1430721600 / 11
t = 130065600

Therefore, the minimum transient time is 13006500.

Nickzom Calculator – The Calculator Encyclopedia is capable of calculating the minimum transient time.

To get the answer and workings of the minimum transient time using the Nickzom Calculator – The Calculator Encyclopedia. First, you need to obtain the app.

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Once, you have obtained the calculator encyclopedia app, proceed to the Calculator Map, then click on Petroleum under Engineering Now, Click on Well Testing under Petroleum Now, Click on Minimum Transient Time under Well Testing The screenshot below displays the page or activity to enter your value, to get the answer for the minimum transient time according to the respective parameter which are the permeability (k), porosity (φ), reservoir radius (r), viscosity (μ) and total compressibility (CT). Now, enter the value appropriately and accordingly for the parameter as required by the permeability (k) is 11, porosity (φ) is 14, reservoir radius (r) is 7, viscosity (μ) is 13 and total compressibility (CT) is 22. Finally, Click on Calculate  As you can see from the screenshot above, Nickzom Calculator– The Calculator Encyclopedia solves for the minimum transient time and presents the formula, workings and steps too.