United States ANS crude oil Assay
ANS API gravity: 31.4Anything below 15 API would be considered an extra-heavy crude. Tim Fitzgibbon
API = (141.5/Specific Gravity) - 131.5
Barrels of ANS crude oil per metric ton
In the oil industry, quantities of crude oil are often measured in metric tons. ANS 7.24 bbl per MT.
ANS Sulfur: 0.96%
Sulfur is considered an undesirable contaminant because, when burned, it generates sulfur oxides.
As a general rule, a crude oil grade with high sulfur content will have a lower value. This type of crude is often referred to as a sour crude.