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The AAPG/Datapages Combined Publications Database

Journal of Petroleum Geology

Abstract

Journal of Petroleum Geology, Vol.5, No.4, pp 401-408, 1983

©Copyright 2000 Scientific Press, Ltd.

THE ANALYSIS OF C-H-O DATA IN KEROGEN
STUDIES USING A COEFFICIENT OF ELIMINATION

J. Ferguson*

* Department of Geology, Imperial College, Prince Consort Road, London, SW7 2BP.

Abstract

A coefficient of elimination derived from Information Theory is proposed. The coefficient expresses the mixing of the elements C, H and O in kerogen, based on chemical analyses. It is shown to have meaning in terms of the products of kerogen evolution, as well as the changes in the chemistry of the kerogen itself. It is suggested that this parameter, plotted against percentage hydrogen, is a useful addition to the conventional van Krevelen diagram. Points representing the accepted stages of kerogen evolution are indicated with reference to the chemistry of the processes involved and are shown to be similar to those determined from physical studies, in particular reflectivity.

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