Acids in oil are one of the raw materials needed to prevent corrosion in the oil industry, as well as raw materials needed for the extraction of oil. In this case, the fractions of the oil acids are first separated and the oils in the various cyclic compounds are extracted from them. Oil acids are widely used in the most important sectors of the economy; The annual industrial demand for naphthenic acids is several times higher than their production. Despite the sharp deficit, a large part of the oil acids were lost in the refineries. Therefore, research on the discovery of sources of petroleum acids is urgent, and it is necessary to study the detailed composition of natural oil acids, which are separated from the high fat content in them.