The image above represents the fluid potential.

To compute for the fluid potential, three essential parameters are needed and these parameters are **pressure (P), Datum Levels (ΔZ) **and **Density (ρ).**

The formula for calculating fluid potential:

φ = P – [^{ρ} / _{144}]ΔZ

Where;

φ = Fluid Potential

P = Pressure

ΔZ = Datum Levels

ρ = Density

Let’s solve an example;

Find the fluid potential when the pressure is 24 with a datum level of 18 and the density of 30.

This implies that;

P = Pressure = 24

ΔZ = Datum Levels = 18

ρ = Density = 30

φ = P – [^{ρ} / _{144}]ΔZ

φ = 24 – [^{30}/_{144}] 18

φ = 24 – [0.2083] 18

φ = 24 – 3.75

φ = 20.25

Therefore, the fluid potential is **20.25**.

**Calculating the Pressure(P) when the fluid potential, Datum levels and Density is Given.**

P = φ – [^{ρ} / _{144}]ΔZ

Where;

P = Pressure

φ = Fluid Potential

ΔZ = Datum Levels

ρ = Density

Lets solve an example;

Find the pressure with a fluid potential of 40 and a datum levels of 18 with density of 24.

This implies that;

φ = Fluid Potential = 40

ΔZ = Datum Levels = 18

ρ = Density = 24

P = φ – [^{ρ} / _{144}]ΔZ

P = 40 – [^{24} / _{144}]18

P = 40 – [0.167]18

P = 40 – 3

P = 37

Therefore, the **pressure** is **37.**

**Calculating the Datum levels(ΔZ) when the fluid potential, Pressure and Density is Given.**

ΔZ = ^{(θ – P) 144} / _{p}

Where;

ΔZ = Datum Levels

φ = Fluid Potential

P = Pressure

ρ = Density

Let’s solve an example;

Find the datum levels with a fluid potential of 50, a pressure of 25 and density of 14.

This implies that;

φ = Fluid Potential = 50

P = Pressure = 25

ρ = Density = 14

ΔZ = ^{(θ – P) 144} / _{p}

ΔZ = ^{(50 – 25) 144} / _{14}

ΔZ = ^{(25) 144} / _{14}

ΔZ = ^{3600} / _{14}

ΔZ = 257.14

Therefore, the **datum levels** is **257.14**.

**Calculating the Density ( p) when the fluid potential, Pressure and Datum levels is Given.**

*p* = ^{(θ – P) 144} / _{ΔZ}

Where;

ρ = Density

ΔZ = Datum Levels

φ = Fluid Potential

P = Pressure

Let’s solve an example;

Find the density with a fluid potential of 62, pressure of 36 and datum levels of 24.

This implies that;

φ = Fluid Potential = 62

ΔZ = Datum Levels = 24

P = Pressure = 36

*p* = ^{(θ – P) 144} / _{ΔZ}

*p* = ^{(62 – 36) 144} / _{24}

*p* = ^{(26) 144} / _{24}

*p* = ^{3744} / _{24}

*p* = 156

Therefore, the **density** is **156.**

Nickzom Calculator – **The Calculator Encyclopedia** is capable of calculating the fluid potential.

To get the answer and workings of the fluid potential 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

**Android (Paid)** – https://play.google.com/store/apps/details?id=org.nickzom.nickzomcalculator

**Android (Free)** – https://play.google.com/store/apps/details?id=com.nickzom.nickzomcalculator

**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 **Reservoir Fluid Flow **under **Petroleum**

Now, Click on **Fluid Potential **under **Reservoir Fluid Flow**

The screenshot below displays the page or activity to enter your value, to get the answer for the fluid potential according to the respective parameter which are the **pressure (P), Datum Levels (ΔZ) **and **Density (ρ).**

Now, enter the value appropriately and accordingly for the parameter as required by the **pressure (P)** is **24**,** Datum Levels (ΔZ) **is **18 **and **Density (ρ)** is **30**.

Finally, Click on Calculate

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