Heavy oil is a type of crude oil which is very viscous, meaning that it does not flow easily. The common characteristic properties of heavy oil are: high specific gravity, low hydrogen to carbon ratios, high carbon residues, and high contents of asphaltenes, heavy metal, sulphur and nitrogen. Specialized processing is required to produce more useful fractions, such as: naphtha, kerosene, and gas oil. The Husky Energy Lloydminster Upgrader is specially designed to take heavy oil and bitumen feedstock and process it into high quality, low sulfur, synthetic crude oil. The upgrader in 1998 produced an average of 54,000 barrels per day (bpd) of synthetic crude oil (8585 m3)and 15,000 bpd (2385 m3 per day) of oil equivalent in other products such as: diluent, petroleum coke, and sulphur. By 2008, the average production had increased to 66,00 bpd of synthetic crude blend, 1,000 tonnes per day of petroleum coke, 375 tonnes per day of sulphur (used in fertilizer), 12,000 bpd of diluent (used to reduce the viscosity of heavy oil to facilitate movement in pipelines, for example, and 4,000 bpd of low sulphur diesel fuel.
The above information courtesy of Husky Energy - click here
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