The Effects of Source Rock, Depositional Environment and Maturity on Distr ibution of Neutral Nitrogen Compounds

Abstract

Abstract: The distribution of neutral nitrogen compounds in oils from Erdos basin and Qaidam basin is investigated. The control effects of source rock, depositional environment and maturity on such compounds are further discussed. The results indicate that there are some distinct differences of relative abundance of pyrrolic nitrogen compounds in various crude oils; the source rock affects little on the distribution of pyrrolic nitrogen compounds; the depositional environment and maturity have important effects on the abundance of pyrrolic nitrogen compounds; m(1-MC)/m(4-MC), m(1,8-DMC)/m(2,7-DMC)and m(benzo[a]carbazole)/m(benzo[c]carbazole)can be used as maturity parameters. It is suggested that pyrrolic nitrogen compounds have potential significance both in oil-gas migration and in paleoenvironment and thermal maturity evaluation.

Key words: crude oil, depositional environment, maturity, pyrolle

CLC Number:

TE111.11

WANG Chuan-yuan, DUAN Yi, DU Jian-guo. The Effects of Source Rock, Depositional Environment and Maturity on Distr ibution of Neutral Nitrogen Compounds[J]. Xinjiang Petroleum Geology, 2008, 29(3): 299-302.

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