API Gravity

°API
Specific Gravity
Density (kg/m3)
bbl/Te

°API = (141.5/G)-131.5

bbls/Te = 1/(0.159*G)

G = Specific Gravity (oil/water at 60°F)

Density of water @ 60°F = 999.016 kg/m3

 

 
°API
kg/m3
Light crude
> 31.1
< 870
Medium oil
22.3 - 31.1
870 - 920
Heavy crude
10 - 22.3
920 - 1000
Extra heavy crude
< 10
> 1000


  Specific Gravity bbl/Te
Naphtha light 0.66-0.70 9.55-9.01
Naphtha medium 0.70-0.75 9.01-8.40
Naphtha heavy 0.75-0.80 8.40-7.88
Crude oil 0.80-0.97 8.0-6.6
Aviation gasoline 0.70-0.78 9.1-8.2
Kerosene 0.71-0.79 9.0-8.1
Gas oil 0.78-0.86 8.2-7.6
Diesel oil 0.82-0.90 7.8-7.1
Lubricating oil 0.82-0.92 7.8-6.9
Fuel oil 0.92-0.99 6.9-6.5
Asphaslitc bitumen 1.00-1.10 6.4-5.8