2012•Gaoxiao dizhi xuebaoRequires access

Source-Rock Characteristics and Oil-source Correlation in the Hongqiba Area,Northwestern Junggar Basin

Fengyan Liu

Abstract

Analyses of geochemical characteristics of oil fractions,C-isotope and biological markers of well cores and crude oil from the Hongqiba area in the northwestern margin of Junggar Basin reveal that the source rock has low abundance in organic matter and poor kerogen.Oils from Hongqiba and its adjacent areas show a certain degree of correlations with the source rocks of the Fengcheng Formation in the Mahu sag with regard to the distribution of C 20,C 21,C 23 tricyclic diterpanes,Pr/Ph,and carbon isotope.Therefore,we suggest that oils mainly originated from the Fengcheng Formation of the Mahu sag.

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Key concepts: Source rock, Geology, Kerogen, Structural basin, Geochemistry, Isotopes of carbon, Organic matter, Mineralogy