Method and apparatus for measuring kerogen content of oil shale

Details Method and apparatus for measuring kerogen content of oil shale Method and apparatus for measuring kerogen content of oil shale

1977-02-02

1979-04-17

Evans, F. L.

Optics: measuring and testing

By shade or color

With color transmitting filter

23230EP, G01J 350, G01N 2148

Patent

active

041498054

ABSTRACT:
The kerogen content of oil shale is measured by illuminating the surface of a solid piece of oil shale so that the amount of light not absorbed by the oil shale is reflected from the illuminated surface. A monochromatic portion of the reflected light is sensed, the wavelength of the sensed light being within the absorption band for kerogen in oil shale. The amount of light absorbed by the piece of oil shale is proportional to its kerogen content, and the amount of sensed reflected light, which is inversely proportional to kerogen content, is converted into a measurement of kerogen content. To avoid wide variations in measured kerogen content, caused by nonuniform kerogen distribution within the sample being analyzed, reflected light is integrated over an area of the sample likely to have numerous varves containing kerogen.

REFERENCES:
patent: 3232711 (1966-08-01), Senyk et al.
patent: 4009962 (1977-03-01), Lauer et al.
patent: 4030837 (1977-06-01), Kojima et al.

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