The image above represents crude oil gravity.

To compute for the crude oil gravity, two essential parameters are needed and these parameters are **oil density (ρ _{o}) and water density (ρ_{w}).**

The formula for calculating the crude oil gravity:

γ_{o} = ^{ρo} / _{ρ}_{w}

Where;

γ_{o} = Crude Oil Gravity

ρ_{o} = Oil Density

ρ_{w} = Water Density

Let’s solve an example;

Find the crude oil gravity when the oil density is 28 and the water density is 46.

This implies that;

ρ_{o} = Oil Density = 28

ρ_{w} = Water Density = 46

γ_{o} = ^{ρo} / _{ρ}_{w}

γ_{o} = ^{28} / _{46}

γ_{o} = 0.608

Therefore, the **crude oil density **is **0.608.**

**Calculating the Oil Density when the Crude Oil Gravity and the Water Density is Given.**

ρ_{o} = γ_{o} x ρ_{w}

Where;

ρ_{o} = Oil Density

γ_{o} = Crude Oil Gravity

ρ_{w} = Water Density

Let’s solve an example;

Find the oil density when the crude oil gravity is 30 and the water density is 16.

This implies that;

γ_{o} = Crude Oil Gravity = 30

ρ_{w} = Water Density = 16

ρ_{o} = γ_{o} x ρ_{w}

ρ_{o} = 30 x 16

ρ_{o} = 480

Therefore, the **oil density **is **480.**