Study on the Migration of Crude Oil in Yan9 Subsection of the Yanan Formation, Maling Oilfield in Ordos Basin, China
- Received Date: 1900-01-01
- Rev Recd Date: 1900-01-01
- Publish Date: 2008-04-10
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Key words:
- Ordos Basin
Abstract: The charging and migration direction as well as migration time, pathway and power of crude oil in Yan9 subsection of the Yanan Formation of Maling oilfield in Ordos Basin have been studied for the first time. The migration fractionation of neutral nitrogen compounds in the crude oils indicate that the lateral charging direction of crude oil is from the southeast of the oilfield to the northwest and from the northwest of the oilfield to the southeast. It is also observed by means of the migration fractionation features of neutral nitrogen compounds in the oils that vertical migration direction of crude oil is upward. The homogenization temperature of fluid inclusions in the reservoir exhibits two peak temperatures, reflecting the two stages of migration and accumulation of oil. The migration pathway of oil is river sandstones. The migration power of oil is capillary strength and abnormally high pressure.
Citation: | DUAN Yi. Study on the Migration of Crude Oil in Yan9 Subsection of the Yanan Formation, Maling Oilfield in Ordos Basin, China[J]. Acta Sedimentologica Sinica, 2008, 26(2): 349-354. |