is a mixture of hydrocarbons that exists in the liquid phase in natural underground reservoirs and remains liquid at atmospheric pressure after passing through surface-separating facilities.
1. ESPO (Eastern Siberia-Pacific Ocean):
2. BLCO (Bonny Light Crude Oil):
3. WTI (West Texas Intermediate):
4. Heavy and Light Crude Oil:
Overall Classification: Crude oil is categorized into specific grades like ESPO, BLCO, and WTI, each with its unique characteristics. Additionally, crude oil can be broadly classified as heavy or light based on its density and viscosity, impacting its refining and market applications.