The image above represents separator gas gravity.

To compute for the separator gas gravity, four essential parameters are needed and these parameters are **API Gravity (°API), Actual Separator Temperature (°Rankine) (T _{sep}), Actual Separator Pressure (P_{sep})** and

**Gas Gravity at Actual Separator P**

_{sep}and T_{sep}(γ_{g}).The formula for calculating the separator gas gravity:

γ_{gs} = γ_{g}[1 + 5.912(10^{-5})(°API)(T_{sep} – 460)log(^{Psep} / _{114.7})]

Where:

γ_{gs} = Separator Gas Gravity

°API = API Gravity

T_{sep} = Actual Separator Temperature (°Rankine)

P_{sep} = Actual Separator Pressure

γ_{g} = Gas Gravity at Actual Separator P_{sep} and T_{sep}

Let’s solve an example;

Find the separator gas gravity with an API Gravity of 21, actual separator temperature of 18, actual separator pressure of 14 and gas gravity at actual separator of 32.

This implies that;

°API = API Gravity = 21

T_{sep} = Actual Separator Temperature (°Rankine) = 18

P_{sep} = Actual Separator Pressure = 14

γ_{g} = Gas Gravity at Actual Separator P_{sep} and T_{sep} = 32

γ_{gs} = γ_{g}[1 + 5.912(10^{-5})(°API)(T_{sep} – 460)log(^{Psep} / _{114.7})]

γ_{gs} = 32[1 + 5.912(10^{-5})(21)(18 – 460)log(^{14} / _{114.7})]

γ_{gs} = 32 [1 + 5.912(10^{-5})(21)(18 – 460) log(0.1220)]

γ_{gs} = 32 [1 + 5.912(10^{-5})(21)(-442) log(0.1220)]

γ_{gs} = 32 [1 + 5.912(10^{-5})(21) (-442) (-0.9134)]

γ_{gs} = 32 [1 + 0.501]

γ_{gs} = 32 [1.501]

γ_{gs} = 48.039

Therefore, the separator gas gravity is **48.039**.

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

To get the answer and workings of the separator gas gravity 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 **Fluid Properties**** **under **Petroleum**

Now, Click on **Separator Gas Gravity**** **under **Fluid Properties**

The screenshot below displays the page or activity to enter your values, to get the answer for the separator gas gravity according to the respective parameters which are the **API Gravity (°API), Actual Separator Temperature (°Rankine) (T _{sep}), Actual Separator Pressure (P_{sep})** and

**Gas Gravity at Actual Separator P**

_{sep}and T_{sep}(γ_{g}).Now, enter the values appropriately and accordingly for the parameters as required by the **API Gravity (°API)** is **21**,** Actual Separator Temperature (°Rankine) (T _{sep})** is

**18**,

**Actual Separator Pressure (P**is

_{sep})**14**and

**Gas Gravity at Actual Separator P**is

_{sep}and T_{sep}(γ_{g})**32.**

Finally, Click on Calculate

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