Xinjiang Petroleum Geology ›› 2006, Vol. 27 ›› Issue (3): 375-382.

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On Heavy Oils in Eurasia

E. G. Yashenko, U. M. Palishuk   

  1. Institute of Petrochemistry, Siberian Branch, Russian Academy of Sciences, Tomsk, Russia 630090
  • Received:2006-01-10 Online:2006-06-01 Published:2020-10-19

Abstract: The basic features of heavy oil in Eurasia are reviewed as major backup resources for oil production in recent years. The spatial distribution of heavy oil domain in Eurasia is studied. The most heavy oils are distributed in East Europe and the western China. The rule of change of crude oil viscosity with depth shows that the highest viscosity of crude oil ranges mainly from 1000 m to 2000 m in depth. The viscosity of crude oil is declined with decrease of the buried depth. Following the relationship between the viscosity and the geological period of oil-bearing strata, this paper suggests that the highest viscosity of crude oils is distributed in Mesozoic strata, while the lowest viscosity of crude oils is in Proterozoic strata. Generally speaking, it is concluded that heavy oils in Eurasia are heavy, sulfurbearing, highly colloidal and highly bituminous, with low paraffin content and initial boiling point of 20℃.

Key words: Eurasia, heavy oil, petrochemistry, buried depth, oil-bearing stratum, geological period, spatial distribution

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