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Characterization of crude oil and its fractions by fluorescence spectroscopy analysis

Inactive Publication Date: 2016-07-07
SAUDI ARABIAN OIL CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Benefits of technology

The patent describes systems and methods for analyzing the properties of crude oil samples without the need for extensive and time-consuming crude oil assays. This is done by measuring indicative properties such as Market value and quality can be determined based on these properties, without the need for detailed information about the individual components of the crude oil sample.

Problems solved by technology

Due to the number of distillation cuts and the number of analyses involved, the crude oil assay work-up is both costly and time consuming.
To determine these properties of gas oil or naphtha fractions conventionally, these fractions have to be distilled from the crude oil and then measured / identified using various analytical methods that are laborious, costly and time-consuming.
New rapid, and direct methods to help better understand crude oil compositions and properties from analysis of whole crude oil will save producers, marketers, refiners and / or other crude oil users substantial expense, effort and time.

Method used

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  • Characterization of crude oil and its fractions by fluorescence spectroscopy analysis
  • Characterization of crude oil and its fractions by fluorescence spectroscopy analysis
  • Characterization of crude oil and its fractions by fluorescence spectroscopy analysis

Examples

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example 1

[0054]A set of constants K and X1-X7 was determined using linear regression for the indicative properties cetane number, pour point, cloud point, aniline point, octane number, and aromaticity. These constants were determined based on known actual distillation data for plural crude oil samples and their corresponding indicative properties. These constants are given in Table 3.

TABLE 3ConstantsCetane NumberPour PointCloud PointK−2.920657E+04−2.283807E+048.016178E+04X18.247657E+046.995129E+04−2.781445E+05X2−8.008823E+04−7.232753E+043.199487E+05X32.758504E+042.532512E+04−1.219746E+05X41.273387E+024.791017E+013.108188E+01X54.207752E−01−8.303909E−021.963374E−01X6−4.676128E−037.142002E−04−1.983566E−03X7−1.581570E+02−5.156225E+01−4.212763E+01ConstantsAniline PointOctane NumberWCO-AROMK−4.370054E+041.017323E+051.047903E+04X11.449824E+05−3.438191E+05−4.741776E+04X2−1.608909E+053.877252E+056.274074E+04X35.979962E+04−1.457003E+05−2.516125E+04X42.649713E+01−9.217455E+008.586987E+01X5−5.686953E−02...

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Abstract

A system and a method are provided for calculating the cetane number, pour point, cloud point, aniline point, aromaticity, and / or octane number of a crude oil and its fractions from the density and fluorescence spectroscopy of a sample of the crude oil.

Description

CROSS-REFERENCE TO RELATED APPLICATION[0001]This application claims the benefit of U.S. Provisional Patent Application No. 62 / 099,703 filed Jan. 5, 2015, the disclosure of which is incorporated herein by reference in its entirety.FIELD OF THE INVENTION[0002]This invention relates to a method and process for the evaluation of samples of crude oil and its fractions by fluorescence spectroscopy analysis.BACKGROUND OF THE INVENTION[0003]Crude oil originates from the decomposition and transformation of aquatic, mainly marine, living organisms and / or land plants that became buried under successive layers of mud and silt some 15-500 million years ago. They are essentially very complex mixtures of many thousands of different hydrocarbons. Depending on the source, the oil predominantly contains various proportions of straight and branched-chain paraffins, cycloparaffins, and naphthenic, aromatic, and polynuclear aromatic hydrocarbons. These hydrocarbons can be gaseous, liquid, or solid under...

Claims

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Application Information

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IPC IPC(8): G01N33/28G01N21/64G01N33/30
CPCG01N33/2823G01N33/30G01N2201/12G01N21/64G01N33/2811G01N21/645G01N21/25G01N2021/6417
Inventor AL-HAJJI, ADNANKOSEOGLU, OMER REFA
Owner SAUDI ARABIAN OIL CO
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