A Study on Maturity Indicatorssome of Some Aromatics in Low-Midmature Thermal Evolution Zones

Chen Zhilin; Li Sujuan; Wang Zhong

Abstract

This paper mainly discussed the effect of some maturity indicators of aromatics prior to and withinthe oil generation zone. By using GC-M S with a modified fused silica capillary column(BPXS) to analysethe extracts of the Yucan-2 well source rock section from the Linqing sag as well as, some source rockand crude oil samples with different maturity in the Shengli oilliekl. In present study, the distribution characteristics of aromatics in chromatograms, the ratio of perylene and benzoflouranthene vs. benzo(e)py rene, β Η deydroxyto一copherol ratio, 2, 6+ 2, 7/1,5 dimethylnaphthalene ratio and dehydroxyt copherol are some reliable markers of low maturity. A combination of maturity indicators from 2, 3, 6/2,3, 6+ 1, 2, 5 trimethyl-raphthalene ratio and 1, 3, 6, 7/1, 3, 6, 7+ 1, 2, 5, 6 tetramethylnaph thalene ratio i suseful for the assessmnt of crude oils and source rocks in the whop thermal evolution zone.

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References

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A Study on Maturity Indicatorssome of Some Aromatics in Low-Midmature Thermal Evolution Zones

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