Definitions for "Heavy Crude Oil"
Keywords:  crude, gravity, api, viscosity, celcius
Oil of high viscosity, recoverable only to a limited extent (5%) by using standard production techniques. Loosely applied to crude oils with low API gravity (roughly, below 20o Celcius).
Is petroleum with a high specific gravity and a low API gravity. It has a relatively high proportion of heavy hydrocarbon products or fractions. Compare to Light Crude Oil.
Crude oil of 20 degrees API gravity or less.