Source rock-crude oil correlation by isotopic type-curves

Details Source rock-crude oil correlation by isotopic type-curves Source rock-crude oil correlation by isotopic type-curves

Oct 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978gecoa..42.1573s&link_type=abstract

Geochimica et Cosmochimica Acta, vol. 42, Issue 10, pp.1573-1577

Computer Science

2

Scientific paper

An isotopic type-curve has been defined based on the 13 C / 12 C ratios of the saturated, aromatic, heterocomponent (NOSs), and asphaltene fractions of crude oils. These fractions show 13 C enrichments with increasing polarity or polarizability. This systematic pattern can be used to estimate the 13 C / 12 C ratio of the kerogen from which the oil had been generated. Genetically associated source rock oil pairs have been used to show that the difference between the measured and the estimated -values of kerogen is about -0.5%., and between the -values of the kerogen and the asphaltene fraction is approximately +0.6%.

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