The image above represents gas flow.

To compute for the gas flow, four essential parameters are needed and these parameters are **Performance Co-efficient (C), Average Reservoir Pressure (P _{r}^{*}), Flowing Bore Hole Pressure (P_{wf}^{*}) and Exponent (n).**

The formula for calculating the gas flow:

Q_{g} = C(P_{r}^{*}² – P_{wf}^{*}²)^{n}

Where;

Q_{g} = Gas Flow

C = Performance Co-efficient

P_{r}^{*} = Average Reservoir Pressure

P_{wf}^{*} = Flowing Bore Hole Pressure

n = Exponent

Let’s solve an example;

Find the gas flow when a performance Co-efficient is 9, average reservoir pressure is 10, flowing bore hole pressure is 5 and an exponent of 20 is given.

This implies that;

C = Performance Co-efficient = 9

P_{r}^{*} = Average Reservoir Pressure = 10

P_{wf}^{*} = Flowing Bore Hole Pressure = 5

n = Exponent = 20

Q_{g} = C(P_{r}^{*}² – P_{wf}^{*}²)^{n}

Q_{g} = 9(10² – 5²)20

Q_{g} = 9(100 – 25)20

Q_{g} = 9(75)20

Q_{g} = 9(3.17e+37)

Q_{g} = 2.85e+38

Therefore, the **gas flow **is **2.85e+38**.

Nickzom Calculator – **The Calculator Encyclopedia** is capable of calculating the gas flow.

To get the answer and workings of the gas flow 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 **Gas Flow**** **under **Reservoir Fluid Flow**

The screenshot below displays the page or activity to enter your value, to get the answer for the gas flow according to the respective parameter which are the **Performance Co-efficient (C), Average Reservoir Pressure (P _{r}^{*}), Flowing Bore Hole Pressure (P_{wf}^{*}) and Exponent (n).**

Now, enter the value appropriately and accordingly for the parameter as required by the **Performance Co-efficient (C)** is **9**,** Average Reservoir Pressure (P _{r}^{*})** is

**10**,

**Flowing Bore Hole Pressure (P**is

_{wf}^{*})**5**

**and Exponent (n)**is

**20.**

Finally, Click on Calculate

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