Method and apparatus for evaluating the composition of an oil sa

Details Method and apparatus for evaluating the composition of an oil sa Method and apparatus for evaluating the composition of an oil sa

1993-11-22

1997-08-12

Fields, Carolyn E.

Radiant energy

Methods of determining oil presence, contamination or...

250255, 2504611, G01N 2164

Patent

active

056568100

ABSTRACT:
A method and apparatus for evaluating the composition of an oil sample. The method and apparatus are premised on the discovery that spectral differences can be observed in the luminescence, excitation, light scattering and absorption spectra in the near UV, visible and near IR regions for various crude oil components, such as asphaltenes, deasphalted crude oil and organic solid residues. Accordingly, in one preferred embodiment the method comprises illuminating an oil sample with light of a suitable excitation wavelength, measuring the resultant fluorescence therefrom and comparing the resultant fluorescence to appropriate standards derived from known components of crude oil.

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Brownrigg et al, "Low Temperature Total Luminescence Contour Spectra of Six Topped Crude Oils and Their Vacuum Distrillate and Residuum Fractions", U.S. Dept. of Energy, BETC/R1-78/13, Aug. 1978.

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