Sour crude oil Totally Explained

Everything about Sour Crude Oil totally explained

Sour crude oil contains the impurities hydrogen sulfide (H₂S) and carbon dioxide, or mercaptans. All crude oil contains some impurities. When the total sulfide level in the oil is > 1 % the oil is called "sour". The impurities will need to be removed before this lower quality crude can be refined into gasoline, thereby increasing the cost of processing. This results in a higher-priced gasoline than one made from sweet crude oil. Thus sour crude is usually processed into heavy oil such as diesel and fuel oil rather than gasoline to reduce processing cost. Sour oil is toxic and corrosive, with high levels of hydrogen sulfide. At low concentrations the oil has the smell of rotten eggs, but at high concentrations the inhalation of hydrogen sulfide is fatal. The oil is effectively odorless at more dangerous concentrations since it kills one's sense of smell almost immediately. Such sour crude oil needs to be stabilized by having hydrogen sulfide gas (H₂S) removed from it before being transported by oil tankers for safety reasons. Venezuela, Saudi Arabia, Iraq, Kuwait, Iran, Colombia and Mexico are major producers of sour crude oil.

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