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Characterizatin of crude oil by ultraviolet visible spectroscopy

A technology of spectroscopy and crude oil, which is applied in material analysis, color/spectral characteristic measurement, instruments, etc. through optical means, and can solve the problems of time-consuming, expensive crude oil analysis and processing, etc.

Inactive Publication Date: 2017-10-17
SAUDI ARABIAN OIL CO
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] Crude oil analysis processing is expensive and time-consuming due to the number of distillation fractions involved and the number of analyses.

Method used

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  • Characterizatin of crude oil by ultraviolet visible spectroscopy
  • Characterizatin of crude oil by ultraviolet visible spectroscopy
  • Characterizatin of crude oil by ultraviolet visible spectroscopy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0043] Table 3 is an example of a tabulation of values ​​for Arabian heavy crude oil samples in the wavelength range 220-400 nm. This data is depicted as figure 1 curve.

[0044] Table 3: Absorbance of Arabian Heavy Crude Oil at 2nm intervals in the wavelength range of 220–400nm

[0045]

[0046] Will have a density of 0.8828 kg / lt and 5W% = 94°C; 10W% = 138°C; 20W% = 204°C; 30W% = 267°C; 40W% = 326°C; 50W% = 384°C; 60W% = 446°C ; 70W% = 513°C; 80W% = 592°C The crude oil sample of the simulated distillation curve was run on a UV / Visible spectrophotometer, and at 220-500cm -1 Spectra were obtained in the wavenumber range. The cumulative UV / Vis absorbance of the samples was calculated from the UV / Vis spectral data and normalized; a summary of % absorbance to wavenumber was obtained using interpolation and / or numerical methods as follows:

[0047] 5W%=221nm; 10W%=225nm; 20W%=232nm; 30W%=240nm; 40W%=251nm; 50W%=263nm; 60W%=276; 70W%=294;

[0048] The following constant val...

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Abstract

A system and a method for determining one or more distillation temperatures for one or more given distillation weight percentages of a crude oil sample are provided, which can be used to produce a simulated distillation curve. Simulated distillation temperatures of crude oil samples are assigned as a function of density and data derived from UV / Visible spectroscopy measurement of the crude oil samples.

Description

[0001] related application [0002] This application claims the benefit of US Provisional Patent Application No. 62 / 099,669, filed January 5, 2015, the disclosure of which is hereby incorporated by reference. field of invention [0003] The present invention relates to methods and processes for evaluating samples of crude oil and fractions thereof by ultraviolet-visible spectroscopy. Background technique [0004] Crude oil originates from the decomposition and transformation of aquatic (mainly marine) organisms and / or terrestrial plants buried under a continuous layer of soil and silted up approximately 0.15-500 million years ago. They are essentially very complex mixtures of thousands of different hydrocarbons. Depending on the source, crude oil mainly contains various fractions of linear and branched paraffinic, naphthenic and naphthenic, aromatic and polynuclear aromatic hydrocarbons. These hydrocarbons can be gaseous, liquid or solid under normal temperature and pressu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/28G01N21/31G01N21/33
CPCG01N21/314G01N21/33G01N33/2823G01N2021/3155G01N2201/129G01N21/5907G01N33/28G01N21/3151G01N2201/12
Inventor O·R·克塞奥卢A·阿尔哈吉G·贾梅森
Owner SAUDI ARABIAN OIL CO
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