JZUS - Journal of Zhejiang University SCIENCE

Journal of Zhejiang University SCIENCE A 2007 Vol.8 No.11 P.1864-1871

http://doi.org/10.1631/jzus.2007.A1864

Petroleum systems in the Damintun Depression, Liaohe Oilfield

Author(s): ZHENG Li-hui, XING Yu-zhong
Affiliation(s): School of Energy Resources, China University of Geosciences, Beijing 100083, China; more
Corresponding email(s): aazhlh@tom.com
Key Words: Petroleum system, Source rock, Geochemical characteristics, Hydrocarbon migration

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Abstract: There are two different types of oils—high-wax oil and normal oil—found in the Damintun Depression of Liaohe Oilfield after several years of exploration and development, but their distributions and origins had confused the explorers in the oilfield. The introduction of petroleum-system concept shifts the view of geoscientists from geology and geophysics to oil, gas and their related source rocks. After detailed study, two petroleum systems have been identified in the Damintun Depression: (1) the ES₄²-Ar buried hill petroleum system (called the high-wax oil petroleum system) and (2) the ES₄¹+ES₃⁴-ES₄ and ES₃ petroleum system (called the normal oil petroleum system). Based on the detailed analysis of the basic components, and all the geological processes required to create these elements of the two petroleum systems, it is put forward that targets for future exploration should include the area near Dongshenpu-Xinglongpu and the area near the Anfutun Sag. This provides scientific basis and has theoretical and practical meaning for the exploration and development.

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