Update of oil and gas potential of Permian deposits in the junction zone of Vilyui syneclise and the Aldan anteclise

Over the past two decades, significant geological exploration work, including seismic exploration, has been carried out within the junction zone of the Vilyui syneclise and the Aldan anteclise. In addition, oil and gas companies are also interested in this territory, acquiring licenses for the search and exploration for hydrocarbon deposits. The object of the study is the terrigenous deposits of the Permian system. The main oil and gas potential of this territory is associated with these Permian deposits. Within the Vilyui syneclise, there are gas fields in the Permian deposits, which provide gas to the central regions of Yakutia. Thus, it is necessary to update the oil and gas potential of the area. The study was based on seismic exploration data, deep well data, including well logging curves, core descriptions, and Permian sediment test results. Previously published literature on the geological structure of Permian rocks was also analyzed. Our seismic interpretation and analysis of well data resulted in structural surfaces. The structural surfaces characterize Permian, Triassic and Jurassic sediments. The thickness maps have been used to determine the distribution areas of Permian deposits, Triassic and Jurassic fluid-sealing rocks. Using structural maps, thickness maps, faults and well data, the most oil and gas promising zones and objects of Permian deposits were identified. The promising zones are associated with a reduction in the thickness of Permian deposits, and identified near the wedge line. The fault-limited positive structures are promising objects.