Types of crude oil based on sulphur content
Oil with low sulphur content is classed as "sweet" while oil with high sulphur content is "sour." According to the New York Mercantile Exchange, to be classed as sweet crude oil must contain less than 0.5% sulphur. Crude oil exists in a number of varieties and blends. The many types of crude oil are graded based on their density and sulfur content, and these factors determine how easily the crude oil can be processed for different purposes. Regarding these two factors, crude oil is often referred to as being light, medium, The answer to the question, “what is the best crude oil in the world,” is based on two oil qualities: weight and sulfur content. Not all crude oil is the same. Just as there are different types of crude oil derivatives — diesel, gasoline, kerosene (jet fuel), fuel oil, bunker fuel, plastics, synthetics, cosmetics, household products, etc., — there are different kinds of crude oil. Most of the sulfurs in crude oil are in the form of organic molecules (such as mercaptan, alkyd sulfide, sulfoxide and thiophene), and trace amounts of them are elemental sulfur and hydrogen sulfide (H 2 S). But not all kinds of sulfur compounds are corrosive; only a fraction can react with metallic compounds to create sulfidation corrosion. Sweet crude contains small amounts of hydrogen sulfide and carbon dioxide. If the sulfur content in the crude is greater than 0.5%, it is categorized as sour in nature. EIA has classified different types of crude oil available in the market based on the above factors. Sour crude oils have a higher Sulphur content typically above 1%wt and will require more processing in a refinery. Examples: Bow River, Kuwait Export, Maya Light Crude Oils
Sulphur is a corrosive material which decreases the purity of a crude oil. Therefore, a crude oil with high sulphur content (sour crude) should sell cheaper than one with low sulphur content (sweet crude). WTI Crude. West Texas Intermediate (WTI) crude oil is of very high quality.
Crude oils contain sulphur heteroatoms in the form of elemental sulphur S, dissolved hydrogen sulphide H 2 S, carbonyl sulphide COS, inorganic forms and most importantly organic forms, in which sulphur atoms are positioned within the organic hydrocarbon molecules. Classifications are made based on the sulfur content as well. Crude oil with low content of sulfur means 'sweet' and the presence of high content sulfur is known as 'sour'. One of the largest and major Classifications of Crude oil is Brent Blend, which is found in the North Sea. Sulphur is a corrosive material which decreases the purity of a crude oil. Therefore, a crude oil with high sulphur content (sour crude) should sell cheaper than one with low sulphur content “Carbon and hydrogen make up around 98 percent of the content of a typical crude oil type. The rest is made up of sulfur (1-3 percent), nitrogen, oxygen, metal and salts (less than 1 percent each).” Although crude oil assays evaluate various chemical properties of the oil, the two most important properties determining a crude's value are its density (measured as API specific gravity) and its sulphur content (measured per mass). Crude oil is considered "heavy" if it has long hydrocarbon chains, or "light" if it has short hydrocarbon chains: an API gravity of 34 or higher is "light", between 31-33 is "medium", and 30 or below is "heavy".
donors as well as in-kind support from a number of partners in the energy and ( American Petroleum Institute) gravity number and the sulfur content of the crudes, buyers and sellers of crude oil use price adjustments based on quality
Depending on where it is found and the conditions under which it was formed, crude oil can vary widely in density, viscosity, and sulfur content. Crude oil is
Although crude oil assays evaluate various chemical properties of the oil, the two most important properties determining a crude's value are its density (measured as API specific gravity) and its sulphur content (measured per mass). Crude oil is considered "heavy" if it has long hydrocarbon chains, or "light" if it has short hydrocarbon chains: an API gravity of 34 or higher is "light", between 31-33 is "medium", and 30 or below is "heavy".
26 Jun 2013 graph of Density and sulfur content of selected crude oils, as described in the article based on Energy Intelligence Group—International Crude Oil Market Handbook. Many types of crude oil are produced around the world. variable amounts of sulfur, nitrogen, and oxygen compounds. Metals in the Four different types of hydrocarbon molecules appear in crude oil. energy-rich fuels (petroleum-based fuels), including petrol, diesel, jet, heating, and other fuel.
The petroleum industry often names crude based on the oil's geographical source, for example, Crude oil with a higher sulfur content is classified as “sour.
Sulfur content of crude oils is the second most important property of crude oils sulfur content are ASTM D129, D1552, and D2622, depending on the sulfur level. The distillation process segregates sulfur species in higher concentrations
"Sweet crude" is a term that refers to crude oil that has less than 1% sulfur. The sulfur content of both Brent and WTI is well under 1%, making them both “sweet.” They are also less dense (“lighter”) than many of the crude oils extracted elsewhere.