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Crude oil composition is very complex and can vary even within in every reservoir. Petroleum crude oil content varies according to light, the ratio of hydrocarbon classes, the content of compounds with oxygen, nitrogen, or sulfur and the presence or absence of components.Such oils have been classified according to the amount of paraffin, the percentage of sulfur in the fuel freezing point. This material is inte nded to present the existing classifications andproperties near the Romanian Petroleum and ordering a ne...