Black Oil

Black oil is a type of crude oil that is thick, dark, and heavy, with high viscosity and density. It contains a mixture of hydrocarbons, along with impurities like sulfur and other contaminants. Because of its dense nature, black oil often requires additional refining to produce fuels, lubricants, and other petrochemical products. It's typically found in certain oil fields and is valued for its abundant hydrocarbon content, though it demands more energy and advanced refining processes compared to lighter, less dense oils.