METHOD FOR DETERMINING PARAFFIN AND ASPHALTHENE CONTENT IN OIL

摘要

The invention relates to geology, geochemistry, oil refining and to petrochemistry and can be used for determining paraffin and asphalthene content in oil, in particular for testing heavy oils and bitumens. The inventive method for determining paraffin and asphalthene content in oil consists in taking three samples of crude oil, in dissolving the two samples in a solvent, in subsequently removing said solvent together with light oil fractions, in removing asphalthenes from one of solvent-treated samples, in measuring the free induction decrement curves for all the three samples by means of a nuclear resonance method and in determining the ratio between hydrogen-containing solid-state suspended in oil fractions and hydrogen-containing liquid fractions. The paraffin concentration is defined according to the content of the hydrogen-containing solid-state fractions in the other solvent-treated sample, taking into account the specified paraffin concentration. The paraffin and asphalthene content in oil is determined according to the specified ratio therebetween in the hydrogen-containing solid-state fractions.