11/9/2023 0 Comments What is the opposite of sweet![]() ![]() There are over one hundred different crude oils traded on the market today. The ideal oil is light and sweet with a low TAN count, while the harder to process oil is heavy and sour with a high TAN count. If a crude has a high TAN number, producers must use more robust metallurgy than standard so their processes can handle that corrosivity and keep the crude in the pipe.Ĭompanies use a test called an assay to get a full chemical breakdown of what is in a barrel of oil. TAN stands for “Total Acid Number.” The TAN count of oil is a measure of how corrosive it is. Midstream companies and refiners that transport, store, and process sour oil know they need extra treating capabilities to take out the sulfur and sweeten the product. Sour crude has as much as 1-2% of sulfur. ![]() Sweet crude has very low levels of sulfur, well under 1%. What makes a particular crude sweet or sour is the amount of sulfur it contains. You’ve probably heard people referencing “sweet” and “sour” oil. Below are some visual examples of heavy oil and light oil. This scale was created by the American Petroleum Institute to measure the density of oil. The standard unit of measurement for oil weight is API Gravity. Light oil requires less processing and produces a greater percentage of gasoline and diesel than heavy oil. Heavy oil evaporates slowly and contains material that will be used to make heavy products like asphalt. There are three primary qualities that differentiate one oil from another: Weight, Sweetness, and TAN count. ![]() ![]() It is a fossil fuel, which means it is formed from dead organisms that are buried under intense heat and pressure.īut not all crudes are alike. What are we referring to when we talk about oil?Ĭrude oil is a black liquid found in geological formations. ![]()
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