H. Yang, E.V. Soboleva, Sh. Qiu
Permian deposits of the eastern part of the Fukang Sag (Junggar Basin): settings of hydrocarbon pool formation
Key words: Fukang Sag; Fudong slope; oil; reservoir; migration; factors of formation; oil and gas source rocks.
For citation: Yang H., Soboleva E.V., Qiu Sh. Permian deposits of the eastern part of the Fukang Sag (Junggar Basin): settings of hydrocarbon pool formation. Geologiya nefti i gaza. 2022;(1):85–94. DOI: 10.31087/0016-7894-2022-1-85-94. In Russ..
The Fukang Sag and surrounding uplifts in the east and south within the Junggar petroleum basin are the areas richest in hydrocarbon reserves. Since the rate of the expected oil and gas reserves growth in the entire petroleum basin began to slow down, the central part of the Fukang Sag and its slopes are becoming new key areas for exploration and prospecting for hydrocarbon fluid pools. The features of the Fudong slope geological structure, which connects the framing eastern uplifts and the Fukang Sag depocentre, are favourable for hydrocarbons migration from oil and gas source rocks into traps. In the Permian deposits of the Beisantai uplift, commercial oil reserves have already been discovered. In order to substantiate possible trends of geopetroleum studies for oil and/or gas accumulations discovery in the Fukang Sag, we have comprehensively studied the available geological and geophysical data, including: seismic sections, drilling data, logging diagrams and core, structural features of the Fudong slope, as well as sedimentogenesis, diagenesis and catagenesis settings in the Permian deposits to identify oil and gas source rocks, factors affecting hydrocarbon fluid accumulation and conservation of oil reservoirs.