How to Calculate and Solve for Minimum Transient Time in Well Testing | The Calculator Encyclopedia

Last Updated on March 6, 2024

To calculate the minimum transient time in well testing, five essential parameters are required. They are permeability (k), porosity (φ), reservoir radius (r), viscosity (μ) and total compressibility (C_T).

The formula for calculating the minimum transient time:

t = ^{9.48 x 104 φ C_T r²} / _k

Where;

t = Minimum Transient Time
k = Permeability
φ = Porosity
r = Reservoir Radius
μ = Viscosity
C_T = 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
C_T = Total Compressibility = 22

t = ^{9.48 x 104 φ C_T r²} / _k
t = ^{9.48 x 104 x 14 x 22 x 7²} / ₁₁
So, t = ^{9.48 x 104 x 14 x 22 x 49} / ₁₁
t = ^1430721600 / ₁₁
t = 130065600

Therefore, the minimum transient time is 13006500.

How to Calculate Minimum Transient Time in Well Testing Using The Calculator Encyclopedia

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.

You can get this app via any of these means:

Web – https://www.nickzom.org/calculator-plus

To get access to the professional version via web, you need to register and subscribe for NGN 1,500 per annum to have utter access to all functionalities.
You can also try the demo version via https://www.nickzom.org/calculator

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Apple (Paid) – https://itunes.apple.com/us/app/nickzom-calculator/id1331162702?mt=8
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 (C_T).

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 (C_T) 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.