Characterization of crude oil by high pressure liquid chromatography
AssigneeSaudi Arabian Oil Company
InventorsOmer Refa Koseoglu, Adnan Al-Hajji, Saroj Kumar Panda
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Abstract
A system and a method are provided for calculating one or more indicative properties, e.g., one or more of the cetane number, octane number, pour point, cloud point and aniline point of oil fractions, from the density and high pressure liquid chromatography (HPLC) data of a sample of the crude oil.
Claims14
A system for assigning an indicative property of to a fraction of an oil sample, based upon high pressure liquid chromatography (HPLC) data, the system comprising:
- a non-volatile memory device that stores calculation modules and data, the data including HPLC data indicative of analyte retention time;
- a processor coupled to the memory;
- a first calculation module that calculates the saturates and aromatic composition of the gas oil fraction from the HPLC data;
- and
- a second calculation module that calculates and assigns the indicative property as a function of the saturates and aromatic composition and a density of the oil sample.
A system for assigning an indicative property of to a fraction of an oil sample comprising:
- a high pressure liquid chromatography (HPLC) system that outputs HPLC data;
- a non-volatile memory device that stores calculation modules and data, the data including outputted HPLC data indicative of analyte retention time;
- a processor coupled to the memory;
- a first calculation module that calculates the saturates and aromatic composition of the gas oil fraction from the HPLC data;
- and
- a second calculation module that calculates and assigns the indicative property as a function of the saturates and aromatic composition and a density of the oil sample.
A method for operating a computer to assign an indicative property to a fraction of an oil sample based upon high pressure liquid chromatography (HPLC) data, the method comprising:
- entering into the computer a density of the oil sample and HPLC data indicative of analyte retention time;
- calculating and assigning the saturates and aromatic composition of the gas oil fraction from the HPLC data;
- and
- calculating and assigning the indicative property as a function of the saturates and aromatic composition and a density of the oil sample.
A method for operating a computer to assign an indicative property to a fraction of an oil sample comprising:
- obtaining high pressure liquid chromatography (HPLC) data from a HPLC system, the HPLC data indicative of analyte retention time,
- obtaining a density of the oil sample;
- entering into the computer the density of the oil sample and the HPLC data;
- calculating and assigning the saturates and aromatic composition of the gas oil fraction from the HPLC data;
- and
- calculating and assigning the indicative property as a function of the saturates and aromatic composition and a density of the oil sample.
Dependencies are inferred from the claim text.