Zhenglu Xiao, Shijia Chen, Longxiang Tang, Guibin Wang, Meimei Han
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Source of the Jurassic Oil in the Western Mahu Sag of Junggar Basin, NW China
In recent years, important breakthroughs have been made in the exploration of the northwestern margin of Mahu sag in Junggar basin. The estimated amount of oil deposits in this region seems to be as large as 100-million-ton lithologic reservoir. A certain scale of oil reservoirs was found in the Jurassic Badaowan formation, which indicates that the Jurassic reservoir has promising prospects for exploration. The geochemical characteristics of Jurassic crude oil and Permian source rocks and oil accumulation factors are studied in this paper. The results show that carbon isotope values ( δ 13 C) and the biomarker parameters ( γ /C 30 H and C 24 Tet/C 26 TT) have a good application in oil source correlation. Crude oil in Jurassic reservoir was generated from Permian Fengcheng (P 1 f) source rock. The main hydrocarbon expulsion period of the P 1 f source rock was between late Permian and middle Cretaceous. The crude oil migrated upward into the Jurassic lithologic traps through faults or superimposed sand bodies.
期刊介绍：
“Journal of the Japan Petroleum Institute”publishes articles on petroleum exploration, petroleum
refining, petrochemicals and relevant subjects (such as natural gas, coal and so on). Papers published in this journal are
also put out as the electronic journal editions on the web.
Topics may range from fundamentals to applications. The latter may deal with a variety of subjects, such as: case studies in the development of oil fields, design and operational data of industrial processes, performances of commercial products and others
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