Method calculates crude cut properties

An investigation of 28 crude samples from Russia, FSU countries, the Middle East, North Africa, and Bulgaria showed that the crude true boiling point (TBP), or ASTM D-86 distillation, density, and sulfur content, along with the Riazi’s property distribution model and known correlations, can determine the physical and chemical properties of each 1% narrow cut of the crude. The samples have densities (d420) of 0.792-0.938 and sulfur contents of 0.04-3.90%.Crude costs, which account for about 80% of refinery expenditures, is the single most important determinant for the profitability of an oil company.1 The quality and value of a crude oil depends on its TBP curve—which consists o...

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