# How to Calculate and Solve for Oil Saturation of Reservoir Fluid Flow | The Calculator Encyclopedia

The image above represents the oil saturation.

To compute for the oil saturation, five essential parameters are needed and these parameters are cumulative oil production (Np), oil in place (N), initial water saturation (Swi), initial oil FVF (Boi) and oil FVF (Bo).

The formula for calculating oil saturation:

S = [1 – Swi] [1 – Np / N] [Bo / Boi]

Where;

S = Oil Saturation
Np = Cumulative Oil Production
N = Oil in Place
Swi = Initial Water Saturation
Boi = Initial Oil FVF
Bo = Oil FVF

Let’s solve an example;
Given that the cumulative oil production is 22, oil in place is 8, initial water saturation is 16, initial oil FVF is 12 and the oil FVF is 7.
Find the oil saturation?

This implies that;

Np = Cumulative Oil Production = 22
N = Oil in Place = 8
Swi = Initial Water Saturation = 16
Boi = Initial Oil FVF = 12
Bo = Oil FVF = 7

S = [1 – Swi] [1 – Np / N] [Bo / Boi]
S = [1 – 16] [1 – 22/8] [7/12]
S = [1 – 16] [1 – 22/8] [0.583]
S = [1 – 16] [1 – 2.75] [0.583]
S = [1 – 16] [-1.75] [0.583]
S = [-15] [-1.75] [0.583]
S = 15.31

Therefore, the oil saturation is 15.31.

Nickzom Calculator – The Calculator Encyclopedia is capable of calculating the oil saturation.

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

You can get this app via any of these means:

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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 Reservoir Fluid Flow under Petroleum

Now, Click on Oil Saturation under Reservoir Fluid Flow

The screenshot below displays the page or activity to enter your value, to get the answer for the oil saturation according to the respective parameter which are the cumulative oil production (Np), oil in place (N), initial water saturation (Swi), initial oil FVF (Boi) and oil FVF (Bo).

Now, enter the value appropriately and accordingly for the parameter as required by the cumulative oil production (Np) is 22, oil in place (N) is 8, initial water saturation (Swi) is 16, initial oil FVF (Boi) is 12 and oil FVF (Bo) is 7.

Finally, Click on Calculate

As you can see from the screenshot above, Nickzom Calculator– The Calculator Encyclopedia solves for the oil saturation and presents the formula, workings and steps too.