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The AAPG/Datapages Combined Publications Database

AAPG Bulletin


Volume: 65 (1981)

Issue: 5. (May)

First Page: 1010

Last Page: 1010

Title: Formation and Evolution of Nonmarine Petroleum in Songliao Basin, China: ABSTRACT

Author(s): Wanli Yang, Li Yongkang, Gao Ruiqi

Article Type: Meeting abstract


We will discuss the geochemical characteristics of the formation of nonmarine petroleum and its evolution regularities in the Songliao Basin and put forward the most favorable conditions for the formation of petroleum of nonmarine origin. The nonmarine kerogen of China can be classified into three types with two subtypes by composition and three types with six subtypes by both origin and composition.

In large lake basins, source rocks containing combined sapropelic kerogen have a high transformation ratio and a high genetic potential for petroleum. They offer the material basis for the formation of a large nonmarine oil field. On the basis of geologic and geochemical data and the results of thermal simulation of kerogen, we confirm that the maturation sequence of kerogen is Type-1, Type-2, and Type-3. The petroleum formation from combined sapropelic kerogen has its own characteristics, and it is necessary to set up a new model.

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Copyright 1997 American Association of Petroleum Geologists