Method for determining true boiling point for crude oils

G - Physics – 01 – N

Patent

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G01N 30/88 (2006.01) G01N 33/28 (2006.01)

Patent

CA 2214155

This invention relates to a method for rapidly determining weight and volume percent true boiling point curves for crude oils and fractions thereof. The method involves at least a partial separation of the crude oil or fraction into constituent chemical components, obtaining mass spectra of the chemical components, correlating retention time windows with boiling points for standard hydrocarbon mixtures, and converting the total ion current obtained from the mass spectra for selected components to weight and volume percent true boiling points by comparison with data obtained from a standard crude oil or fraction thereof.

Méthode pour obtenir rapidement les courbes des points d'ébullition réels pour le pourcentage en masse et en volume. La méthode consiste à séparer au moins partiellement le brut ou la fraction de brut en constituants chimiques, à obtenir les spectres de masse de ces constituants, à établir une corrélation entre les plages des temps de rétention avec les points d'ébullition pour les mélanges d'hydrocarbures étalons, et à convertir le courant ionique total obtenu à partir des spectres de masse pour des constituants sélectionnées en points d'ébullition réels pour le pourcentage en masse et en volume, comparativement avec les données obtenues à partir d'un brut étalon ou d'une fraction de celui-ci.

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