The National Energy Modeling System: An Overview 2003

Crude Oil Categories in PMM

Category

Sulfur

Gravity

Low-sulfur light

0.5%

>24

Medium-sulfur heavy

0.35-1.1%

>24

High-sulfur light

>1.1%

>32

High-sulfur heavy

>1.1%

24-33

High-sulfur very heavy

>0.7%

<23